API Development is an effective way for software to communicate and interact with each other over the internet. It’s a great way for developers to expand the capabilities of a program or systems by creating interfaces and allow data to be shared between different types of technology. With an API, existing systems can connect and more advanced solutions can be made. Hiring an API Developer can enable businesses to streamline processes and enable a much faster integration of existing software solutions.

API Developers are skilled engineers specialized in creating new APIs and maintaining existing ones. They are responsible for developing and troubleshooting current APIs, designing APIs from standards-based web services, maintaining inventory and implementing authorization mechanisms. Additionally, they incorporate different technologies together to create advanced software solutions that integrate cloud systems like Amazon Web Services or MongoDB and APIs with point-and-click platforms, like WordPress or HubSpot.

Here’s some projects that our expert API Developer made real:

  • Creating advanced databases on different cloud systems
  • Linking between two cameras from a microscope
  • Interfacing with customizing Wordpress themes, Woocommerce themes and SMS services
  • Building secure back end systems to analyze different public APIs
  • Applying sophisticated authorization mechanisms
  • Creating comprehensive ecommerce websites using MERN Stack
  • Developing node APIs for exchange markets using Node.js, Web3.js, Ether.js
  • Automatically out of stocking items from supplier’s stock through an API system.

It is no surprise that good API Development is the cornerstone of many successful software solutions. Our expert API Developers are well experienced in developing suitable solutions for projects ranging from app development to SaaS applications, game development to enterprise system integrations. WithFreelancer.com, businesses can easily hire one of these skilled professionals to build their own bespoke projects that are perfectly tailored for their needs. So why not post your own project on Freelancer today and hire an expert API Developer?

На підставі 98,883 відгуків клієнтів, рейтинг API Developers становить 4.9 із 5 зірочок.
Найняти API Developers

API Development is an effective way for software to communicate and interact with each other over the internet. It’s a great way for developers to expand the capabilities of a program or systems by creating interfaces and allow data to be shared between different types of technology. With an API, existing systems can connect and more advanced solutions can be made. Hiring an API Developer can enable businesses to streamline processes and enable a much faster integration of existing software solutions.

API Developers are skilled engineers specialized in creating new APIs and maintaining existing ones. They are responsible for developing and troubleshooting current APIs, designing APIs from standards-based web services, maintaining inventory and implementing authorization mechanisms. Additionally, they incorporate different technologies together to create advanced software solutions that integrate cloud systems like Amazon Web Services or MongoDB and APIs with point-and-click platforms, like WordPress or HubSpot.

Here’s some projects that our expert API Developer made real:

  • Creating advanced databases on different cloud systems
  • Linking between two cameras from a microscope
  • Interfacing with customizing Wordpress themes, Woocommerce themes and SMS services
  • Building secure back end systems to analyze different public APIs
  • Applying sophisticated authorization mechanisms
  • Creating comprehensive ecommerce websites using MERN Stack
  • Developing node APIs for exchange markets using Node.js, Web3.js, Ether.js
  • Automatically out of stocking items from supplier’s stock through an API system.

It is no surprise that good API Development is the cornerstone of many successful software solutions. Our expert API Developers are well experienced in developing suitable solutions for projects ranging from app development to SaaS applications, game development to enterprise system integrations. WithFreelancer.com, businesses can easily hire one of these skilled professionals to build their own bespoke projects that are perfectly tailored for their needs. So why not post your own project on Freelancer today and hire an expert API Developer?

На підставі 98,883 відгуків клієнтів, рейтинг API Developers становить 4.9 із 5 зірочок.
Найняти API Developers

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    Next.js and Core Php developer needed
    6 дні(-в) left
    Верифіковано

    Highly experienced NEXT JS and PHP developer needed. The role is to fix the existing bugs in the application and also update few modules. You must meet the following conditions: 1. must be an independent freelancer 2. Must be availble for meeting on a daily basis 3. Must have atleasrt 10 solid years in developing in PHP and 8 years into be fluent in English

    $94 Average bid
    $94 Сер. заявка
    138 заявки

    City Pro Fix – Professional Home Services Booking Website We are a new London property maintenance company looking for an experienced developer to build a modern, professional and mobile-friendly booking website. The website should include: Easy online booking for Plumbing, Gas, Heating/Boilers, Electrical, Handyman, Air Conditioning and other home services Customer registration/login Customers can upload photos/videos of the problem Online quotation/pricing and secure online payment Booking confirmation, invoices and job status Admin dashboard to manage bookings, customers, services, prices and payments “Become a City Pro Fix Tradesman/Engineer” registration section Tradesmen can upload CV, DBS, ID, qualifications, liability insurance and other documents VIP service opti...

    $570 Average bid
    $570 Сер. заявка
    178 заявки
    AI Codex E-commerce Admin
    6 дні(-в) left
    Верифіковано

    Codex operator -- > Chat/gpt work ai operator -- > Website posting/web admin using Codex to develop/manage and populate the website, fix bugs and do template all in Codex - daily site admin

    $28 Average bid
    $28 Сер. заявка
    83 заявки

    Necesito un sistema web, accesible desde cualquier navegador, que centralice toda la operación de compra y recolección de recursos marinos que realizo directamente en playa. Módulos clave que espero: • Registro detallado de cada lote de pesca: fecha, especie, peso, precio y embarcación asociada. • Control de apertura y cierre de faena, con sello de hora y usuario para un historial confiable. • Gestión de embarcaciones por región y comuna mediante un formulario manual; debe permitir alta, baja y edición rápida. • Generación de reportes en PDF listos para imprimir o enviar, filtrables por fecha, región, embarcación o especie. • Dashboard con estadísticas en tiempo real: canti...

    $419 Average bid
    $419 Сер. заявка
    173 заявки

    Project Overview I am seeking an experienced full-stack developer or small team to audit, improve, secure, and modernize an existing production website and infrastructure. This is **not a greenfield project**. An existing frontend, backend/API, PostgreSQL database, content, media, forms, administrative functionality, Docker deployment, and VPS environment are already in place. The current website has experienced intermittent outages and loading failures. Based on prior troubleshooting, the likely problem area is a combination of deployment/runtime stability and security rather than a simple frontend bug. Known symptoms/issues include: Website sometimes hangs or times out while Docker containers still appear to be running. Nginx and Docker are functional, but the deployment is not yet ...

    $467 Average bid
    $467 Сер. заявка
    256 заявки
    Real-Time AD Sync in Laravel
    6 дні(-в) left
    Верифіковано

    I have a PHP / Laravel web application that must stay perfectly in step with our on-premise Microsoft Active Directory. The only focus is data synchronization—specifically, keeping user profile details (display name, email, phone, title, etc.) in real time. No authentication or group management work is required; sign-in is already handled elsewhere. Here is how I picture the job: • Establish a secure LDAP/LDAPS connection to our on-prem AD from the Laravel app (the server is behind a VPN; I can expose the required ports). • Map the AD user attributes I will provide to the corresponding columns in my users table, then create or update those records automatically. • Implement an event-driven or near real-time strategy—DirSync/Change Notifications, queued j...

    $436 Average bid
    $436 Сер. заявка
    181 заявки

    Hello, I’m looking for a developer to work on an existing cybersecurity project and convert it from a desktop application into a full Web App. Current project: CyberShield-Pro GitHub: The current project is built with Python and includes system monitoring and security-related functionality. The required work includes: Converting the existing desktop application into a Web App. Preserving and improving the existing functionality where appropriate. Developing a modern Web interface. Admin dashboard. Advanced security reports. Database integration. External database/API integrations where applicable. Adding appropriate new features based on the existing system. Testing and fixing bugs before final delivery. Current technologies include: Python, PySide6, CustomTkinter, and...

    $85 Average bid
    $85 Сер. заявка
    63 заявки
    Programador Remoto TechTool OBDII
    6 дні(-в) left
    Верифіковано

    Busco colaborar con alguien que ya maneje a nivel avanzado la arquitectura de TechTool Online y Offline para realizar programación OBDII remota en camiones. Mi objetivo inmediato es llevar a cabo actualizaciones de software: descargar los paquetes correctos desde TechTool Online y transferirlos con éxito a una instalación de TechTool Offline para aplicarlos en la ECU del vehículo. Qué necesito de ti • Verificar la versión y compatibilidad de TechTool Online, preparar la descarga remota del archivo requerido y documentar cada paso. • Migrar el archivo a TechTool Offline, asegurarte de que se reconozca sin errores y ejecutar la actualización de software sobre OBDII. • Desarrollar o ajustar los scripts/procesos necesarios ...

    $531 Average bid
    $531 Сер. заявка
    52 заявки

    want to build our own platform where users can: Register/Login on our platform Connect their Facebook Page and Instagram account Select/connect their Facebook or Instagram posts Add a unique link against each individual post Set a keyword such as “LINK” When someone comments “LINK” on that specific post, the system should detect the comment Identify the exact Post ID / Instagram Media ID Fetch the corresponding link from our database Automatically send the relevant link to the user's DM/Messenger Track all comments, messages and activities through our dashboard Example Facebook Post A → Link A Facebook Post B → Link B Instagram Post C → Link C If someone comments “LINK” on Post B: Comment → Meta Webhook → Identify Post B &ra...

    $102 Average bid
    $102 Сер. заявка
    34 заявки
    Construction ERP System Development
    6 дні(-в) left
    Верифіковано

    We are looking for an experienced Full-Stack Developer or development team to build a custom web-based Construction ERP system for a contracting company. The ERP will include Project Management, Tender & BOQ Management, Procurement, RFQ, Supplier Quotations, Purchase Orders, GRN, Inventory, Project Cost Control, Approval Workflows, Document Management, Dashboards, Reports, Multi-Company, Multi-Branch, Roles & Permissions, Arabic/English support, and responsive web access. The system must be production-ready, modular, scalable, secure, API-ready, and fully integrated between modules. We already have a detailed Scope of Work covering technical requirements, milestones, acceptance criteria, source-code ownership, deployment, warranty, and maintenance. Budget: USD 1,500 base develo...

    $1253 Average bid
    $1253 Сер. заявка
    177 заявки
    Enhance Laravel App: OpenAI & Gemini
    6 дні(-в) left
    Верифіковано

    My current Laravel application is stable, but it has reached the point where genuine AI-powered features and better runtime performance are essential. I want three things achieved in one focused sprint: 1. New functionality with the OpenAI API • Content generation endpoints that accept a prompt and return well-formatted copy in JSON. • A language-translation service that can be called from anywhere in the codebase (middleware-friendly), returning translated strings while respecting existing localisation files. 2. Faster, leaner execution through the Gemini API Gemini will handle selected heavy computations now performed server-side. I need thoughtful caching, graceful fall-backs, and measurable response-time improvements without breaking existing routes or queu...

    $66 Average bid
    $66 Сер. заявка
    39 заявки

    NECRYPTOVIE (NCV) — Complete 4-Phase Blockchain, AI, Marketplace and IoT Ecosystem NEVIE-GLOBAL is seeking a senior blockchain agency or an experienced multidisciplinary technology team to design, develop, deploy and deliver the complete four-phase MVP of the NECRYPTOVIE (NCV) ecosystem as a turnkey project. We want to be fully transparent from the beginning: this is not simply an ERC-20 token development project. NCV is a complete ecosystem combining blockchain, artificial intelligence, automation, SaaS services, digital and physical products, connected devices, IoT, robotics, B2B services and international expansion. Budget Target fixed budget: USD 2,800 for the complete four-phase MVP. The proposal must cover all four phases and include: one total fixed price for the complet...

    $2138 Average bid
    $2138 Сер. заявка
    31 заявки

    I need a cloud-based platform that handles every aspect of job scheduling and dispatch for plumbing companies. The application must run smoothly in modern desktop browsers first; mobile or tablet support can come later, so please optimise the user experience, layout, and performance with that priority in mind. At its heart the system should take incoming work orders, match them to available technicians, and generate the most efficient daily plan automatically. To make that happen I want three AI-driven capabilities baked in from day one: • Automated job allocation • Predictive maintenance alerts • Route optimisation The system will need a clean admin dashboard where staff can create, view, and edit jobs, plus a dispatcher view that shows live technician status on a ...

    $59 Average bid
    $59 Сер. заявка
    17 заявки

    I need a full-fledged invoicing solution that works in the browser and is paired with a dedicated Android app. Think of the overall polish and flow found in SleekBill or myBillBook, then add stronger data security and cloud-based sync so my team can work from anywhere without fear of losing records. Core modules • Invoice generation with GST discounts, and branded PDF export • Expense tracking that ties directly into profit & loss views • Client management with searchable contacts, notes, and activity timelines • Cloud storage so every invoice, receipt, and client detail is backed up automatically and stays in sync between web and Android Key requirements • Single sign-on between web portal and Android app • Role-based access and encryption a...

    $238 Average bid
    $238 Сер. заявка
    51 заявки
    Multi-Service On-Demand Marketplace App
    6 дні(-в) left
    Верифіковано

    I’m ready to turn a concept inspired by Airtasker and Uber into a production-ready marketplace where users can book home, transport, and delivery services from their phone or browser. The project covers three experience layers—Customer, Service Provider, and Admin—and must run smoothly on iOS, Android, and the web with a single, shared back end. You will own the full product cycle: UX/UI design, scalable back-end architecture, real-time matching and tracking, in-app chat, ratings, secure payments, and an analytics-friendly admin console. Stripe (or a comparable gateway) and location services need to be wired in from day one, and the codebase should be clean enough for future micro-service expansion. Deliverables • Interactive wireframes and final UI assets for all ...

    $4829 Average bid
    $4829 Сер. заявка
    137 заявки

    I'm seeking a developer to create a Minimum Viable Product (MVP) for a Travel Booking and Invoicing system. This platform will primarily manage car rental bookings and generate PDF invoices. Essential Features: - Booking Management: Users should be able to manage their car rental bookings efficiently. - Invoice Generation: The system must generate PDF invoices for all transactions. Ideal Skills & Experience: - Experience in developing booking management systems. - Proficiency in PDF generation for invoices. - Familiarity with car rental booking systems is a plus. - Strong backend development skills. Please provide examples of previous similar work. I have attached the PRD

    $74 Average bid
    $74 Сер. заявка
    28 заявки

    My Baileys-based WhatsApp integration is working, but it is starting to lag under heavier traffic. I need an experienced developer who knows the Baileys library inside out to: • Profile the current code, identify the CPU, memory and I/O bottlenecks, and refactor or re-architect where necessary to improve throughput and lower latency. • Verify that every optimised change remains fully compatible with the Web version of WhatsApp, including session handling, QR login, message sending/receiving, media uploads and reconnection logic. • Provide a concise report of the issues discovered, the steps taken to fix them and before-and-after performance metrics (e.g. average response time, messages per second, memory footprint). Acceptance criteria – Messages and media must...

    $202 Average bid
    $202 Сер. заявка
    28 заявки

    MVP Build — Quote Request We're looking for a freelance developer or small team to quote an initial MVP build. This is a rough-scope request to get a ballpark quote — not a full technical spec. Additional phases/tiers will be scoped separately once we're underway. What we're building (high level) A web platform that connects to third-party business software a client already uses (accounting/ERP-type systems, CRM/marketing platforms, etc.), pulls their data into a secure cloud environment, and gives the client a simple portal to log in and view/query that data — including an AI-assisted question-answering feature over their own data. Core skills required Backend development (Node.js/Express or equivalent) — building and hardening API routes, workin...

    $469 Average bid
    $469 Сер. заявка
    150 заявки
    AI SaaS Developer / Team for Health & Social Care Platform
    5 дні(-в) left
    Верифіковано

    We are looking for an experienced AI/SaaS developer or development team to help develop a new UK health and social care technology platform. The initial project involves developing a secure, modern care management and resident intelligence platform that transforms day-to-day care records into useful dashboards, trends, alerts, summaries and management insights. Initial functionality includes: • Resident/service-user profiles • Daily care records and notes • Incident and safeguarding recording • Health and wellbeing observations • Behaviour, mood, sleep and nutrition tracking • Outcome and activity tracking • Staff/key-worker records and interactions • Management dashboards and analytics • AI-generated summaries of resident records • AI i...

    $44029 Average bid
    $44029 Сер. заявка
    148 заявки

    I want to build a full-featured online learning platform that can host more than one teacher and cover three distinct tracks: مواد أكاديمية، مهارات تقنية، وتنمية ذاتية. Learners must be able to follow lessons in the way that suits them best, so the system has to support فيديوهات مسجلة, حصص مباشرة عبر بث تفاعلي، وملفات نصية قابلة للتحميل. Here is what I expect to receive from you: • A scalable web application (web-first, mobile-responsive) with separate instructor dashboards, student dashboards, and an admin panel. • Smooth upload and streaming for pre-recorded videos, plus an integrated live-class module (you may rely on WebRTC, Zoom, or a similar SDK). • A tidy repository for PDFs, slides, and other text-based files with permission control. • Course creation wo...

    $7 / hr Average bid
    $7 / hr Сер. заявка
    70 заявки
    Trophy icon Stegstr App Development Contest
    19 дні(-в) left

    Contest: Build the Best Version of Stegstr () We are running a development contest to produce the best working version of Stegstr, the FOSS steganography application (reference site: ). We will open and test submissions ourselves, and award the prize to the single best-performing version. Stegstr is a nostr app. What we want built: - AI Agent Operability - Networking operations and functionality — a solid, reliable networking layer for sending, receiving, and syncing steganographically-encoded content between users. - Steganographic invisibility — the hidden data must be undetectable through normal viewing or casual inspection of the carrier file (image, audio, or other media). - Robustness to real-world processing — the hidden data must survive being sent through com...

    $500 Average bid
    Гарантований Прихований Топ-конкурс
    $500
    46 робіт

    PROJECT OVERVIEW I am building Pipe-r, an AI-powered field-service management platform designed specifically for plumbing companies. The goal is to create a polished, scalable SaaS product that can compete with platforms such as Jobber and ServiceTitan while providing deeper plumbing-specific workflows, better automation, a faster user experience, and practical AI tools. A prototype/application shell currently exists at and was created using Base44. It establishes the product direction, interface, navigation, and portions of the intended workflow. The selected developer or agency must first audit the existing application and determine what can safely be retained, improved, migrated, or rebuilt. This is not a simple website or basic scheduling application. I need a production-ready, mu...

    $13433 Average bid
    $13433 Сер. заявка
    156 заявки

    Senior AI/ML + Distributed Systems Engineer Required (Backend Enterprise Build – £10,000 Fixed Price) Project: AI Financial Intelligence & Risk Monitoring Platform (Backend) We are hiring a highly experienced engineer or engineering team to architect, build, deploy, and operationalize the production-grade backend for an AI Financial Intelligence & Risk Monitoring Platform. This is not a prototype. This is not a simulation. This must be a fully scalable, real-time, enterprise-grade backend system capable of operating under production conditions. ⸻ Project Overview The backend platform must: * Process high-volume financial data streams in real time * Detect anomalies using AI-driven models (not rule-based systems) * Generate actionable risk intelligence via API * ...

    $11038 Average bid
    $11038 Сер. заявка
    85 заявки

    I am building a modern, cloud-based accounting and financial management solution and need someone who has already walked this road with double-entry engines, multi-tenant security, and mobile-ready architecture. Scope of the first milestone The very first release must run smoothly on Android. Web and iOS will follow, so every design decision—database schema, API layer, authentication—has to be service-oriented and easily portable. Core features to implement in that milestone • Double-entry bookkeeping with a configurable Chart of Accounts • General Ledger, Journal Entries, Accounts Receivable, Accounts Payable, Cashbook, Bank Reconciliation • Accountant role (with the ability to extend later to Admin and Viewer) • Real-time Income Statement and C...

    $9 / hr Average bid
    $9 / hr Сер. заявка
    32 заявки
    Agri-Drone Spraying Web & App Developement
    5 дні(-в) left
    Верифіковано

    A modern and clean website is required to showcase an agricultural drone spraying service. The site will include public pages describing the service, a gallery with photos and videos of projects, and a form for farmers to request quotes or book jobs directly. Additionally, the project includes a custom web application, accessible after logging in, for internal use by the team and clients. The first version (MVP) of this application must allow for the creation of plots, the uploading of prescription maps, the generation of spraying jobs, and the tracking of their execution. The code architecture must be scalable to integrate future functionalities such as automated route planning, real-time monitoring, and data analysis and reporting. Non-negotiable requirements include high security, res...

    $472 Average bid
    $472 Сер. заявка
    185 заявки
    Agri-Drone Spraying Web & App Developement
    5 дні(-в) left
    Верифіковано

    A modern and clean website is required to showcase an agricultural drone spraying service. The site will include public pages describing the service, a gallery with photos and videos of projects, and a form for farmers to request quotes or book jobs directly. Additionally, the project includes a custom web application, accessible after logging in, for internal use by the team and clients. The first version (MVP) of this application must allow for the creation of plots, the uploading of prescription maps, the generation of spraying jobs, and the tracking of their execution. The code architecture must be scalable to integrate future functionalities such as automated route planning, real-time monitoring, and data analysis and reporting. Non-negotiable requirements include high security, res...

    $443 Average bid
    $443 Сер. заявка
    263 заявки

    My priority is to build and refine Microsoft Dynamics 365 Business Central through new AL objects, with the spotlight on custom tables and pages. These pages must support clean data entry, run their own validation, trigger custom workflows, and surface key metrics in dashboard-style reports. Beyond the UI layer, I need business logic that enforces bespoke validation rules and handles data integration processes so information moves reliably between internal modules and any external systems we connect later. Additional work will include, when required, adjusting RDLC or Word layouts for reports, extending posting and approval workflows, exposing data through APIs or web services, and tuning SQL for performance. Deliverables • AL code for tables, pages, and supporting codeunit...

    $268 Average bid
    $268 Сер. заявка
    28 заявки

    I need an intuitive coaching app that allows users to discover courses, connect with instructors, and pay for sessions or learning materials directly inside the app while also showcasing relevant products. The experience should feel seamless from browsing through to checkout, with a clean interface that makes it easy for learners to stick with their goals. Core deliverables • Connecting people to courses – searchable catalogue, coach profiles, enrolment flow • Handling transactions – secure in-app payments, receipts, basic order history • Advertising products – space for banners or promoted items that can be managed from an admin view Code must be production-ready, well-documented, and structured so new modules (extra courses or ads) can be added...

    $1414 Average bid
    $1414 Сер. заявка
    236 заявки

    I have an existing live project and I need help in setting up the WhatsApp Business API keys. Since long time my account is stuck in the "Review in Progress" status (almost 30 days) you dont have to do any integration with backend or anything. on screenshare just need to discuss how to resolve this issue which i am facing with the WhatsApp Business API

    $65 Average bid
    $65 Сер. заявка
    62 заявки

    We are looking for an experienced Full-Stack Developer/Team to build a scalable CMS-based Voter & Field Organization Management Platform with Android Mobile App, Web Application, Central Admin CMS, Analytics, Election Day Live Monitoring and permission-controlled AI tools. The mobile application will primarily serve users from 100 Voter Incharge up to Mandal Incharge, while the web application will serve Constituency Incharge up to State Incharge. A centralized CMS/Super Admin panel will control organization branding, colors, hierarchy, roles, permissions, master data, modules, dashboards, reports, training content, Election Day controls and AI access. The platform must be configuration-driven rather than hard-coded, allowing the same software to be adapted to different organizations...

    $87 Average bid
    $87 Сер. заявка
    39 заявки
    Full stack end to end
    5 дні(-в) left

    # eChampz — Senior Full-Stack Developer (Fiverr brief, v2) > Paste each block into the matching Fiverr field. Notes to Ahmed are in `>` blocks and must be deleted before posting. --- ## ABOUT THE CLIENT The client operates a gaming and esports marketplace serving Saudi Arabia and the wider GCC. The platform connects gamers, talent scouts, studios, teams, and brands. The founder is hiring a senior developer to take technical ownership of the codebase while the founder leads the business. --- ## THE ROLE We need a Senior Full-Stack Developer to take technical ownership of an established React and PostgreSQL platform currently in closed beta and moving toward public launch. This is a six-month engagement structured in three stages: a paid scoped trial, a defined first mile...

    $31 / hr Average bid
    $31 / hr Сер. заявка
    173 заявки
    PHP API Development Expert
    5 дні(-в) left

    I need a seasoned PHP developer to design and build a clean, well-documented API from the ground up. The project centres entirely on backend logic—there is no front-end work—so your focus will be creating efficient endpoints, solid authentication, and clear JSON output. Here’s what I have in mind: • Code in modern PHP (8.x preferred) and follow PSR standards. • Use a framework or micro-framework you’re comfortable with—Laravel, Lumen, Slim, or even plain Composer packages are fine—as long as it stays lean and easy to maintain. • Include token-based authentication, structured error handling, and basic rate limiting. • Provide concise documentation (endpoints, parameters, responses) plus a Postman or Insomnia collection so I can...

    $226 Average bid
    $226 Сер. заявка
    91 заявки

    I need an end-to-end iGaming solution aimed at the Chinese-speaking market. The job covers both the customer-facing front end and the operational back-office. I can provide URLs and credentials to our current sites so you can mirror the best features that already exist in the industry. Front-end scope • Build three responsive templates: Sports Betting, Casino Games, and Poker Room. • Each template must support live streaming, user profile pages, and full multi-language toggling (with Chinese as the default locale). • Templates should share a component library so future skins can be added quickly. Back-office scope • User management (KYC workflow, role/permission matrix, player segmentation tools). • Payment processing that accommodates common Asian gateways...

    $4343 Average bid
    $4343 Сер. заявка
    62 заявки
    Android Media Player
    5 дні(-в) left

    1. Project Overview Develop an Android application that displays advertising images and videos received from a backend platform. The application will run on Android tablets or Android media devices and communicate with a REST API provided by the backend team. 2. Scope The application should: • Login using Username, Password and Screen Number. • Store an authentication token securely. • Display images and videos in full-screen landscape mode. • Periodically check for content updates. • Download or cache media as appropriate. • Continue playback while updates are prepared. • Send heartbeat information. • Report playback events. • Report operational events. • Support offline operation by storing pending events. • Upload pending events whe...

    $463 Average bid
    $463 Сер. заявка
    175 заявки

    I need a solid PostgreSQL-backed RESTful API to drive the Solar TwinPro web application. Your task is to design the database schema and expose clean, versioned endpoints that cover full CRUD functionality for each core resource in the system. The web front-end will consume JSON, so consistent status codes and clear error handling are important. Please structure the project so it can be deployed easily (Docker preferred, but I am open to other simple approaches) and include concise documentation; an OpenAPI/Swagger spec is ideal so the front-end team can plug in without guesswork. Deliverables • PostgreSQL schema (DDL) and seed data • REST endpoints covering create, read, update, delete for all defined entities • Environment and run instructions (e.g., Dockerfile or...

    $223 Average bid
    $223 Сер. заявка
    76 заявки

    We are looking for an experienced developer or agency to build — or integrate an existing solution for — multi-platform job publishing directly from our platform, with seamless inbound candidate flow back. WHAT WE NEED 1. JOB PUBLISHING ENGINE • When a recruiter creates a job on our platform, they should be able to select and publish it to multiple job boards in one click. • Must include global boards: Indeed, Monster, LinkedIn, Glassdoor, ZipRecruiter • Must include Philippines-specific boards: JobStreet, Kalibrr, , JobsDB, PhilJobNet • India boards (bonus): Naukri, Shine, Foundit (Monster India) • Should support both API-based posting (preferred) and XML/RSS feed-based distribution where APIs are unavailable 2. CANDIDATE SYNC • All candidates ...

    $1076 Average bid
    $1076 Сер. заявка
    79 заявки

    I’m preparing a bespoke digital project (internally referenced as “zek23145f78”) and I need an experienced developer who can guide the build from concept to launch. The core idea is defined, but I’m still refining key details such as whether we’ll deliver it as a web app, mobile solution, or cross-platform desktop tool. Because of that, I’m looking for someone comfortable discussing options, recommending the best tech stack, and then executing the agreed-upon plan. Here’s what I need from you: • An initial consultation where we walk through my objectives, target users, and any constraints I might not have surfaced yet. • A concise technical proposal that outlines architecture, timeline, and milestones. • Development, testing, a...

    $20 / hr Average bid
    $20 / hr Сер. заявка
    159 заявки

    I need an AI-powered SaaS solution tailored for plumbers. Essential Features: - Job Management: Track and manage all jobs efficiently. - Scheduling: Automated scheduling to optimize workflow. - GPS Routing: Smart routing for job sites. - Inventory Tracking: Monitor stock levels and manage supplies. - Customer Success and Support: Ensure customer satisfaction. - Time Keeping: Accurate tracking of work hours. - Employee Management: Oversee staff and assignments. - Job Site Management: Organize and manage job sites. Ideal Skills & Experience: - Experience in developing SaaS platforms. - Proficiency in AI integration. - Strong background in project management tools. - Expertise in UX/UI design for ease of use. - Knowledge of the plumbing industry is a plus. Looking for a comprehensive,...

    $2119 Average bid
    $2119 Сер. заявка
    155 заявки
    Unified Game Aggregator API Integration -- 2
    4 дні(-в) left
    Верифіковано

    Need a single game aggregator API for an existing PHP/MySQL platform. Need hosted games, game-launch API, seamless-wallet integration, bet/win/refund callbacks, sandbox access and a large catalog including crash, mines, plinko, instant games and slots. Please quote setup fee, minimum monthly commitment and GGR revenue share.

    $232 Average bid
    $232 Сер. заявка
    24 заявки
    AI Integration: ERP & Manufacturing Systems
    4 дні(-в) left
    Верифіковано

    Industrial AI Integration Platform – ERP & Manufacturing Systems Connectivity If your work rate is not 2-3$ per hour, please don’t apply!!!! Project Overview We are developing an advanced industrial software platform focused on improving operational efficiency within manufacturing environments. We are looking for an experienced developer/architect who can help us build the integration layer between our platform and existing enterprise manufacturing systems. The project involves connecting our solution with widely used industrial software ecosystems, enabling secure data exchange, real-time communication, and scalable integration with different production environments. This is a long-term and strategically important project for us, and we are looking for someone who und...

    $7 / hr Average bid
    $7 / hr Сер. заявка
    110 заявки

    I need a senior full-stack engineer to join an intensive 10-day sprint to finish and launch Rally, a web-based operating system for college events and nightlife. This is a contractual engagement for 10 days, focused on delivering the MVP. The product and codebase already exist. This is NOT a build from scratch. You will receive the existing repository, detailed product scope, workflows, UI mockups, and launch priorities. The work includes completing and connecting the frontend and backend, authentication and user roles, event creation and management, organization dashboards, ticketing and QR check-in, payments, admin functionality, notifications, database integration, mobile responsiveness, bug fixing, testing, and production deployment. The web platform includes interconnected experien...

    $39 / hr Average bid
    $39 / hr Сер. заявка
    262 заявки

    I need a senior full-stack engineer to join an intensive 10-day sprint to finish and launch Rally, a web-based operating system for college events and nightlife. The product and codebase already exist. This is NOT a build from scratch. You will receive the existing repository, detailed product scope, workflows, UI mockups, and launch priorities. The work includes completing and connecting the frontend and backend, authentication and user roles, event creation and management, organization dashboards, ticketing and QR check-in, payments, admin functionality, notifications, database integration, mobile responsiveness, bug fixing, and production deployment. I need someone who is extremely fast, experienced working inside existing codebases, and comfortable taking ownership without constant ...

    $29 / hr Average bid
    $29 / hr Сер. заявка
    250 заявки
    Build a Lightweight Pinterest Competitor Research Web App
    4 дні(-в) left
    Верифіковано

    I'm looking for an experienced Python/Full Stack developer to build a lightweight web application for internal use. Project Overview The application should allow me to enter a competitor's domain and automatically crawl the entire website to discover all content URLs. It should then analyze each URL and generate a Pinterest-focused competitor research report. Features Enter a competitor domain. Crawl the website and discover all article/content URLs. Analyze every discovered URL. Integrate with one or more APIs (API keys will be provided). Display Pinterest-related metrics for each URL (where available). Rank pages by Pinterest performance. Generate an easy-to-read report. Export results to Excel/CSV. Save reports for future reference. Technical Requirements Python preferred (...

    $156 Average bid
    $156 Сер. заявка
    117 заявки

    I represent a marine-sector company that now needs a full digital presence—far more than a brochure site. The goal is to deliver a polished corporate website supported by an online booking engine, a content-management system our staff can run without developers, and a secure client portal that streamlines every post-booking interaction. Scope of work • Design and build a modern, mobile-first corporate website that conveys our authority in the maritime industry and is easy to navigate. • Create an end-to-end booking platform where customers can view availability in real time, select services, complete payment, and instantly receive confirmation. • Provide a CMS with role-based access so marketing and operations teams can update pages, rates, and schedules on thei...

    $545 Average bid
    $545 Сер. заявка
    348 заявки
    Loan Disbursement Site & Admin
    4 дні(-в) left
    Верифіковано

    The project centres on a streamlined, secure web platform that lets individual borrowers handle every step of a small-ticket loan online, while giving my internal team full oversight from the admin side. The front-end must be responsive so applicants can comfortably use desktop or mobile, and the back-office should feel equally intuitive for staff processing dozens of files a day. Borrower portal – required modules • Loan application form with basic KYC upload • Real-time loan status tracking once a request is submitted • Clear repayment schedule that updates automatically after disbursement Admin panel – required modules • User management (create / edit / suspend borrower accounts) • Loan approval workflow with status gates (review →...

    $100 Average bid
    $100 Сер. заявка
    35 заявки

    I need a purpose-built B2B e-commerce portal that allows corporate clients and our field sales representatives to interact inside a single, secure environment. Unlike a standard storefront, the site should emphasise relationship management: every user signs up, lands on the appropriate dashboard, and can start a private conversation thread with the rep assigned to them before any order is placed. Core workflow I have in mind: • User registration & profile creation for two roles—client and sales rep. • Internal messaging so both sides can discuss pricing, availability and order details in real time. (We already manage product data in-house, so a full catalogue can be added later; the immediate focus is on the people connection.) The underlying platform simply needs...

    $179 Average bid
    $179 Сер. заявка
    266 заявки

    I need a seasoned .NET backend developer to build a suite of RESTful APIs that will power our next release. The core of the job is pure API development—no UI work—so you should feel completely at home writing clean, well-structured C# code in .NET (preferably .NET 6 or later), wiring it up with Entity Framework or Dapper for data access, and documenting everything with Swagger / OpenAPI. Here’s what the APIs must handle: • User authentication (token-based, ideally JWT) • Full CRUD operations for our primary data models • Smooth third-party integrations, starting with two vendors that expose JSON endpoints I’ll provide the database schema, access credentials, and a concise list of integration endpoints on kickoff. You’ll return: 1. So...

    $242 Average bid
    $242 Сер. заявка
    62 заявки

    My production C# application currently targets .NET Framework 4.8 and has started to show its age. I need it migrated to a supported, more secure runtime (ideally the latest LTS release of .NET), with every dependency updated and any obsolete APIs refactored. The primary driver is security: I want all outstanding vulnerabilities removed, HTTPS enforcement tightened, and modern authentication/cryptography practices adopted throughout the codebase. During the upgrade I also want to introduce a clean integration layer so the app can talk to external systems (REST and, if feasible, simple message-queue endpoints). This should be implemented in a way that keeps the core logic decoupled and unit-testable. Finally, a handful of persistent UI glitches—visual misalignments and sporadic cont...

    $586 Average bid
    $586 Сер. заявка
    72 заявки
    Smart PG(Paying Guest / Hostel) Management System Development
    4 дні(-в) left
    Верифіковано

    I’m ready to move my Paying-Guest/hostel operations off spreadsheets and into a single, web-based platform built with .NET (C#), SQL Server or MySQL, HTML, CSS and JavaScript. The application will sit on a hybrid setup—part cloud, part on-prem—so clean separation of concerns and a painless deploy script are important. Core scope • Secure, role-based authentication for Owners, Students and Administrators, each landing on a tailored dashboard. • Property and room management with live availability, quick search and filters. • Student self-registration followed by a guided room-booking flow that updates availability in real time. • Integrated rent ledger: capture payments, show history, flag overdue amounts and let me export or print offline recei...

    $11 / hr Average bid
    $11 / hr Сер. заявка
    115 заявки

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