REST API Jobs

About the project We are building, a legal practice management platform designed specifically for small UK law firms. The product has been founder-built and has now developed into a substantial application. It is already well beyond prototype stage, but it has reached the point where I want an experienced senior engineer to review the architecture, challenge previous decisions, identify technical risks and help establish a maintainable engineering direction. This is not a greenfield project and I am not looking for someone to rewrite the application from scratch. I am looking for someone who is particularly good at inheriting existing systems, understanding them quickly and deciding what should be kept, simplified, improved, removed or deferred. Current technology The application is ...

Hi, I’m looking for an experienced FlutterFlow / Flutter developer to build a mobile app MVP. At this stage, I’m keeping the product concept and business details confidential. I can share the detailed requirements with shortlisted developers. Initial requirements * FlutterFlow / Flutter expertise * Firebase or Supabase experience * REST API integration * Third-party API integration * Secure backend architecture * User authentication * Database integration * Subscription/payment integration * Push notifications * Android app deployment * Experience building MVPs from scratch Preferred experience Experience with: * AI/API-based applications * Voice/audio APIs * Speech-to-text and text-to-speech * Secure API integration * Usage limits/subscription systems Please share 1. ...

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...

Instead of manually digging through dozens of scattered government portals, users either chat naturally ("I'm a 24-year-old farmer from Maharashtra earning ₹80k/year") or fill a quick profile form (age, income, caste, gender, profession, state), and the app returns matched schemes — PM Kisan, Ladki Bahin Yojana, Ayushman Bharat, PMAY, scholarships, pensions, etc. — with an AI-generated, plain-language explanation of why each one applies to them. Architecture React 19 + TS Frontend (Hugging Face Spaces / Render, Nginx+Docker) ↓ HTTPS Cloudflare Worker (edge gateway) ↓ ASP.NET Core 8 Web API (Railway/Render, Docker) ↓ PostgreSQL (Neon) — 4,600+ schemes aggregated from 5 govt data sources Key features - Conversational...

I want to bring a new social‐networking idea to life on Android. The project starts with a clean slate, so you will be responsible for transforming my concept into a fully functioning app—from setting up the project structure through to a polished release build ready for Google Play. Core expectations • Design and develop the entire Android application in Kotlin or Java, following modern Material 3 guidelines. • Implement the essential social features we will finalise together (user sign-up/login, profile pages, posting, commenting, liking, real-time updates, and push notifications). • Connect the app to a secure, scalable backend of your choice (Firebase, AWS Amplify, custom REST, etc.) and document the API endpoints clearly for future maintenance. • Ens...

Flutter Mobile Developer — Long-Term Equity-Based Opportunity at Chef AI About Chef AI Chef AI is an AI-powered cooking and food assistant currently being developed under CYCORP. The product is already well underway. The backend infrastructure and APIs have been developed, and the Flutter mobile application is substantially built. We are now looking for a Flutter Mobile Developer to join the team for the long term, complete the remaining development and integration work, and continue developing the product as Chef AI grows. This is not a traditional freelance project. We are looking for someone who wants to become part of the journey and grow with the company. Compensation — READ BEFORE APPLYING THIS IS AN EQUITY-BASED POSITION. There is NO fixed salary, hourly rate, mon...

The project is a cross-platform mobile application built in Flutter and Dart, designed to run smoothly on both Android and iOS. I need clean, scalable architecture, Riverpod or Provider for state management, and a pixel-perfect, responsive UI that follows current Material/Cupertino guidelines. You will be integrating with two kinds of backend resources: a custom REST server that my team exposes, and selected third-party services such as Firebase for push notifications and analytics. For user login, stick to classic email-and-password authentication with solid form validation and clear error handling. Security, stability, and readable code are top priorities, so please factor unit, widget, and integration tests into your workflow. Because I’m aiming to launch as soon as possible, I ...

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...

I need a redeem (rewardd) system similar as so will all same features on both web and mobile. Check lmctplus before you bid please Please plan for these concrete deliverables: • Responsive web app with full voucher redemption flow • Companion iOS and Android builds from the same code base • Admin dashboard to upload new voucher batches, set point costs, and review redemption logs • REST or GraphQL API documentation Acceptance criteria will be a live staging site and testflight / apk builds where I can create a user, earn points through mocked purchase, referral, and engagement events, and successfully redeem and view a voucher.

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...

I’m putting together a Wi-Fi light switch around the ESP32 and I need complete firmware plus a small, self-hosted web interface so the unit can sit on my network and drive a dimmable light circuit. From the browser I should be able to turn the light on/off, set brightness, schedule automatic events, and reach the page securely while away from home. Key functions • Web interface (no mobile app requirement) served directly from the ESP32 • Features enabled: Scheduling, Dimming control, Remote access over the internet/LAN • Clean, responsive HTML + CSS + JavaScript (vanilla or lightweight framework) • MQTT support or lightweight REST endpoints are welcome if it simplifies remote control, but not mandatory Deliverables 1. Well-commented ESP32 source code r...

HR Onboarding & Employee Task Management System Project Description I am looking to develop a modern HR Onboarding & Employee Task Management System that streamlines employee onboarding, approval workflows, task assignment, and workforce management through a secure and user-friendly web application. The goal is to build an intuitive platform that helps organizations automate HR operations, reduce manual processes, and improve employee productivity with real-time dashboards and analytics. Core Features Employee Registration & Secure Authentication Role-Based Access (Admin, HR Manager, Employee) Employee Approval Workflow Task Assignment & Progress Tracking Activity & Performance Monitoring HR Analytics Dashboard Employee Profile Management Responsive Design for Deskto...

I need a solid automation suite for my REST-based service and want it written in TypeScript with Cucumber. The API is already live; what’s missing is a reliable, repeatable way to validate each endpoint whenever we push new code. The job centres on building (or extending) a Cucumber + TypeScript framework that can: • hit every current REST endpoint, • assert responses and status codes, • pull test data from configurable files or environment variables, and • output readable reports (HTML or JSON) after each run. Once the core framework is in place, a handful of sample scenarios should demonstrate the pattern so my in-house team can keep adding tests. Clear setup instructions (npm scripts, ts-config, step definitions, feature files) and a brief README are es...

I need a web-based marketplace where campaign creators can publish live campaigns and participants can join, submit their entries, and track their standing on a real-time leaderboard. The scope is mid-level: robust enough to handle multiple concurrent campaigns but still lean so we can launch quickly and iterate. Core flow • Campaign creators: register, build campaign pages, set rules/criteria, monitor submissions, and close or extend campaigns. • Participants: register, browse active campaigns, submit work (file upload or link), and see their rank on the leaderboard. • Leaderboard: auto-updates based on campaign-specific scoring logic I will provide. • Admin console: light moderation (approve/flag campaigns or submissions) and basic analytics. Tech expectatio...

N8n + AI Automation Specialist — Email Support System (Long-term collaboration) We're looking for an automation and AI specialist to build an intelligent email support system for a psychology center that specializes in addiction treatment. The goal isn't a commercial autoresponder. It's to give natural, human, empathetic replies to people and families reaching out at a difficult moment — and to guide them toward booking a first appointment when the time is right. What the system should do Automatically detect new incoming emails Analyze each message with AI Identify whether the sender is a patient, a family member, or a general inquiry Write natural, empathetic replies Keep context coherent across several back-and-forth emails Answer common questions Hand off...

I need an experienced React + TypeScript + Supabase developer to help improve and stabilize my existing Hotel PMS SaaS called “Hotel Mantri”. The application is already built. I do NOT want a rebuild. Main work required: - Fix very slow loading and performance issues - Fix non-working sidebar buttons and navigation - Optimize Supabase/PostgreSQL queries - Fix React rendering / duplicate API request issues - Improve mobile responsiveness - Stabilize reservations, room chart, check-in/check-out, reports and housekeeping - Help integrate API for Channel Manager - Implement room category mapping, rate plan mapping, inventory/rate sync, OTA reservation import, webhooks and sync logs Tech stack: React TypeScript Supabase PostgreSQL REST API Webhooks IMPORTANT: Do not redesign o...

I need a straightforward Android application that lets diners open our restaurant’s menu instantly after scanning a table-side QR code. At this stage the app is purely for menu browsing—no ordering cart, no payment gateway—so the build can stay lean and focused on fast loading, clear category navigation, and an easy way for staff to keep dish names, photos, prices, and descriptions up to date. Here is what I’m expecting: • A clean Android APK (plus full source) that launches directly into a QR scanner and then displays the corresponding menu screen. • Menu data can live in any lightweight back-end you are comfortable with (Firebase, simple REST JSON or similar is fine) as long as content updates show in the app without having to publish a new build. ...

We are looking for an experienced Senior Full-Stack Developer to build a browser-based 3D modeling and AI-powered creation platform inspired by Womp.com. This is not a standard website. The platform will include an interactive 3D workspace, real-time browser rendering, AI or GPU-powered processing, project management, and 3D file import and export. The frontend will be developed using React and TypeScript. The backend will use Node.js, with separate GPU-powered services running on NVIDIA RTX hardware. The initial goal is to build a stable and scalable MVP. We are not looking to copy Womp’s branding, source code, proprietary assets, or exact user interface. ## Location and Communication Requirements Due to our collaboration schedule, communication requirements, and working-hour a...

Project Title Full-Stack Web Platform for Hotel Management and Reservation System Project Description I am looking for an experienced full-stack developer or development team to build a scalable web platform for the hospitality industry. The project involves developing a modern, secure, and high-performance system that includes: * Multi-vendor architecture. * Hotel management dashboard. * Room management. * Reservation management. * Customer accounts. * Admin dashboard. * Advanced search and filtering. * Online booking workflow. * Payment gateway integration. * Review and rating system. * Notifications (Email/SMS). * Multi-language support (Arabic & English initially). * Responsive design. * REST API for future mobile applications. * High security and scalable architecture. Techn...

The goal is to create a clean, modern cross-platform mobile app using Flutter and Dart. Requirements: - Build responsive mobile UI for Android and iOS - Implement login/register screens with validation - Create dashboard screen with reusable UI components - Integrate REST API and handle JSON data - Display lists and detail pages - Add search/filter functionality - Implement local session storage - Add profile/settings page - Follow Flutter best practices and clean code structure Preferred technologies: - Flutter - Dart - Provider / Riverpod / Bloc / GetX - REST API - Firebase (optional) - Git/GitHub Deliverables: - Complete Flutter source code - Android APK build - Clean project structure - README with setup instructions Please include: - Examples of previous Flutter applications - You...

I’m adding a “one-click” PDF-to-Excel feature to my website and need an executable that can take any uploaded bank statement in PDF form and return a clean, well-structured XLSX file for the user to download. At this stage I’m not tied to specific bank templates—the tool should handle common layouts gracefully and be easy to extend later if we decide to fine-tune it for particular institutions. Because the service will be open to everyone who lands on the page, stability, speed, and simple error handling are crucial. Visitors will not log in; they will just drop a file, hit convert, and immediately receive the spreadsheet, so there’s no room for lengthy queues or time-outs. Here’s how I picture the workflow: 1. User uploads PDF via the web inte...

We are an AI automation agency helping appointment-based service businesses—including HVAC, plumbing, electrical, medspas, dental practices, and healthcare clinics—streamline operations and recover lost revenue through AI-powered automation. We're looking for a talented n8n Automation Developer to build scalable automation systems, integrate AI tools, and create reliable workflows that improve our clients' businesses. Responsibilities Design, build, and maintain automation workflows using n8n Integrate third-party applications using REST APIs, webhooks, and OAuth Connect CRMs, calendars, email platforms, and AI services into seamless workflows Build AI-powered automations using OpenAI, Claude, or similar LLM APIs Configure and optimize GoHighLevel CRM automations an...

**Job Title:** Senior ERP Product Architect & Business Systems Auditor **Experience Level:** 10+ Years (Enterprise Resource Planning) **Engagement:** Part-Time / Fractional / Strategic Advisory (10–15 hours/week) **Location:** Remote --- About the Role We are building a next-generation, high-density Enterprise Resource Planning (ERP) platform. The application combines universal ERP core modules (Accounting, HRMS & Payroll, Sales/CRM, Production, and Logistics/Route Planning) with highly flexible, industry-specific custom logic (such as dimensional pricing, yield/breakage tracking, and specialized field dispatch). We are seeking a **Senior ERP Product Architect / Systems Auditor** with **over 10 years of deep domain experience** in enterprise software (e.g., SAP, Oracl...

Project Title Full-Stack Web Platform for Hotel Management and Reservation System Project Description I am looking for an experienced full-stack developer or development team to build a scalable web platform for the hospitality industry. The project involves developing a modern, secure, and high-performance system that includes: * Multi-vendor architecture. * Hotel management dashboard. * Room management. * Reservation management. * Customer accounts. * Admin dashboard. * Advanced search and filtering. * Online booking workflow. * Payment gateway integration. * Review and rating system. * Notifications (Email/SMS). * Multi-language support (Arabic & English initially). * Responsive design. * REST API for future mobile applications. * High security and scalable architecture. Techn...

I’m looking to have an internal mobile app built that lets our staff collect information quickly and reliably, and I need it to work on both iOS and Android from day one. The whole focus is data collection, so the heart of the product will be clean, intuitive forms and text-field inputs with the usual validation, auto-save, and offline buffering so nothing is lost if a connection drops. I will supply the field list, business rules, and any existing REST endpoints you can hook into; if building a small backend is faster, I’m open to that as well. Either a well-structured native codebase or a modern cross-platform stack is fine—just keep performance snappy and make future maintenance straightforward. Deliverables • Fully functional iOS and Android builds ready ...

I want an intuitive mobile application dedicated to property listings. Buyers should be able to open the app, create a simple account, then immediately dive into a catalogue that they can refine with robust search and filter tools. Once a set of results appears, an in-app map must plot every matching property, with live pins updating as filters change. Tapping a pin (or an item in the list) should open a clean details screen that pulls photos, price, address, and key specs from the feed I will provide. Scope at this stage • Listings feed integration (REST/JSON supplied). • Search & filter (price, location, bedrooms, etc.) with instant updates. • Native map view that syncs with the results list. • Buyer accounts only—sign-up, log-in, password reset,...

Hello, I reviewed your requirements and can build the Student Information System, Attendance Management, and Gradebook modules while integrating them with your existing database. My approach: Backend: Laravel (PHP), REST APIs Database: MySQL (integrating with your existing schema) Frontend: Bootstrap 5 or Tailwind CSS with a responsive UI Authentication: Secure role-based access (Super Admin, School Management, Teachers) Student Module: Complete CRUD, instant search, filters, DataTables, PDF/Excel export, and responsive student profiles. Attendance Module: Teachers select Class, Division, and Date. The student list loads automatically, allowing attendance to be marked quickly. Attendance can be updated later, with daily, monthly, class-wise, and student-wise reports. Gradebook: Teach...

I need an Android application that lets on-site guards log their patrol routes and confirm every checkpoint by scanning a QR code. Each scan, together with a timestamp and GPS position, should sync instantly to a web-based admin panel that supports true multi-tenant use—every client company must only see its own guards, sites, and data. Inside the mobile app guards must also be able to file any security-related incident on the spot, attaching photos, short videos, voice notes, or text. At a minimum the system has to cover breaches and suspicious activities, but I am happy for the incident module to be flexible enough to add further categories later. The admin panel will let supervisors create companies, upload site maps, generate QR codes for checkpoints, schedule patrols, and watc...

My current WordPress install needs a security-first overhaul that authenticates every user through Microsoft Entra ID (Azure AD) Single Sign-On. I want the login flow to be completely hands-off once configured: new users provisioned automatically, existing roles mapped correctly, multi-factor respected, and all traffic forced through HTTPS/OAuth 2.0 / OIDC endpoints. Beyond hardening access, I also have an editorial roadmap that relies on several custom Gutenberg blocks—think dynamic, reusable components that pull data from external services and match our brand styling perfectly. These blocks must be coded the WordPress-native way (no heavy page-builder hacks) so they remain fast, accessible, and fully compatible with future core updates. A set of scheduled API integrations rou...

I’m ready to move from spreadsheets to a unified fleet management system and have already chosen Traccar for GPS data and Odoo as the business backbone. I need someone who can tie these two platforms together and deliver a working solution that covers the core needs of my operation. Scope of work • Configure and deploy a Traccar server that reliably captures real-time GPS data from all vehicles. • Create or adapt Odoo modules to store that data and expose it to three distinct roles—Admin, Fleet Manager, and Driver—each with the right permissions and views. • Integrate vehicle tracking, maintenance scheduling, fuel management, and payment processing for platform usage so everything sits in one dashboard. • Build real-time analytics for daily oper...

I am looking for an experienced full-stack PHP developer or development team to build a modern, secure, and scalable web platform similar to VoteNaija, but with significantly more features. The platform will allow organizers to create voting contests, sell event tickets, reserve VIP tables, sell music, and manage everything from a single dashboard. The system must be professionally developed, responsive, SEO-friendly, secure, and optimized for high traffic. # Preferred Technology * Core PHP 8.x (or Laravel if justified) * MySQL / MariaDB * HTML5 * CSS3 * JavaScript * Bootstrap or Tailwind CSS * jQuery/AJAX * REST API * Paystack Integration * Flutterwave Integration * QR Code Generation * GitHub Repository * cPanel Deployment Main Features 1. User Management * User Registration * Lo...

I need a straightforward grocery-delivery app built for both iOS and Android. The first release should let shoppers add items to a cart, place an order, then follow its progress right up to their doorstep. At hand-off, the driver simply marks the order as paid because every transaction will be Cash on Delivery; no in-app payment gateway is required for now. Clean navigation, snappy search, and a real-time order-status screen are the heart of the build. I already have product data and pricing ready to feed in via a basic REST endpoint, so the mobile side only needs to consume those APIs and present them neatly. Push notifications for each status change (confirmed, out for delivery, delivered) round out the user experience. Please develop the project in a maintainable codebase, supply full...

We are looking for an experienced developer or team to create mobile apps (Android/iOS) and a WordPress-based web application featuring a comprehensive map of deposit machines throughout the country. The project requires: - native mobile apps (iOS/Android). - a WordPress-based web application. - a backend system with a reliable API. Key functions: Native apps: iOS (version 14+) and Android (version 10+) compatibility. Integration requirements: automated deposit machines addresses synchronization via RESTful API (e.g., scheduled nightly updates). Web administration: manage addresses / cities / operators of deposit machines. Graphic design: UI that mirrors the website’s look and feel. Main application features: - list of all cities - list of addresses for all deposit machines...

I’m ready to bring my e-commerce concept to life with a dedicated Android app. The core idea is simple: a smooth, intuitive shopping experience that lets customers browse, buy, and track orders without friction. I already have the product catalogue and brand assets prepared; what I need is an experienced Android developer who can translate that vision int

Project OverviewWe are seeking an experienced developer/team to build a complete B2B ordering and management system. The project requires Native Mobile Apps (iOS/Android), a Web Application, a Web Administration panel, and a Backend system with a RESTful API. Key FeaturesNative Apps: iOS (version 14+) and Android (version 10+) compatibility. Offline Mode: Uninterrupted mobile order-taking without internet, syncing automatically when online. User Access: SMS-based invitation and login system using unique codes. B2B Functions: Specialized reports (financial ledgers, pending orders), autocomplete search, and push notifications. Web Administration: Manage users, products, and orders. Includes advanced commercial policies (combined discount criteria) and approval workflows (Requesters vs. ...

I need a working prototype that lets me monitor a single-car residential parking spot without running any wiring. The concept is simple: • Hardware: a custom ESP32 board that combines LoRa radio, BLE, and a low-power magnetic (Hall-effect) sensor. It will spend almost all of its life in deep-sleep on two AA batteries and wake only when a car enters, exits, or moves. On every wake-up it must stamp the event with time, append the car’s BLE ID, and shoot that packet over LoRa. • Gateway: a battery-operated LoRa gateway that forwards incoming packets to my home Wi-Fi and then to a mobile or web endpoint of my choice (MQTT, REST, or similar). The key technical goals are extreme power efficiency, reliable car-only detection, and end-to-end message delivery you can demonstrate ...

I run a loan recovery agency and need a purpose-built application whose core job is to generate actionable recovery reports. Day to day we track thousands of delinquent accounts, so I want the data we already hold in spreadsheets and our core lending system to flow into one interface where I can pull up a report, filter by agent, date range or product, and instantly see: • Client payment history • Current outstanding loan amounts • Recovery success rates (overall and per agent) The app has to feel native on iOS and Android while also being usable from any modern browser for managers working from their desktops. I am open to React Native, Flutter or another robust cross-platform framework as long as performance is smooth and the codebase is maintainable. Key points you...

We do not currently have any Turnitin or iThenticate API credentials. We need an existing API service provider to supply the API endpoint and credentials for integration into our commercial website. Our own technical team will handle the integration. This is not an API development or website development project. Required: * Similarity and AI Writing results * Official Viewer and downloadable PDF reports * File submission and result retrieval via API * Webhook or callback support * API documentation and test access * Clear usage and concurrency limits * Stable commercial API access Only bid if you already provide this API service. Please include documentation, test access, usage limits, and pricing in your proposal. Testing is required before the long-term purchase.

What you'll work on A React-based security dashboard: asset inventory, vulnerability triage, compliance mapping, executive reporting Data-dense UI: tables, filters, charts (think analyst workflows, not marketing pages) Consuming a FastAPI backend via REST, handling real-time-ish states (scan status, alerts) Auth flows integrated with Clerk Working closely with the founder to fix UX debt and ship a consistently designed, non-templated product What we're looking for 2+ years professional experience with React (hooks-based, functional components) Strong CSS/Tailwind skills — you should be able to build a clean, professional dashboard without a designer holding your hand Comfortable with REST API integration, handling loading/error states properly (this is a security product &...

Project OverviewWe are seeking an experienced developer/team to build a complete B2B ordering and management system. The project requires Native Mobile Apps (iOS/Android), a Web Application, a Web Administration panel, and a Backend system with a RESTful API. Key FeaturesNative Apps: iOS (version 14+) and Android (version 10+) compatibility. Offline Mode: Uninterrupted mobile order-taking without internet, syncing automatically when online. User Access: SMS-based invitation and login system using unique codes. B2B Functions: Specialized reports (financial ledgers, pending orders), autocomplete search, and push notifications. Web Administration: Manage users, products, and orders. Includes advanced commercial policies (combined discount criteria) and approval workflows (Requesters vs. ...

We are seeking an experienced Full Stack Developer to support the development and enhancement of modern web applications. The ideal candidate will have strong experience building scalable front-end and back-end solutions, developing APIs, working with databases, and collaborating with engineering teams to deliver high-quality software. The role involves developing and maintaining user-facing applications using technologies such as React, Angular, Node.js, .NET, or Java. Responsibilities include building and integrating REST APIs, working with SQL and NoSQL databases, troubleshooting application issues, improving existing features, participating in code reviews, and supporting continuous improvement of development practices. Experience with Git workflows and cloud deployment environments...