REST API Jobs

Looking for an experienced freelance Full-Stack Developer for ongoing development of an existing software platform. This is a long-term freelance engagement, not a one-time project. Claude Code access will be provided to assist with understanding the project, development and debugging. The work will mainly involve understanding the existing application, fixing issues, implementing small to medium features, and supporting ongoing development. Main technologies: - Java / Spring Boot or Quarkus - Angular / TypeScript - PostgreSQL - REST APIs - Git - Microservices The developer should be comfortable working with an existing codebase and multiple repositories. You should be able to: - Understand existing code and functionality - Work on assigned development tasks and bug fixes - Make backe...

IoT / Mobile-Web Control Interface Engineer IoT / Mobile-Web Interface Engineer - Smart Hardware Prototype Project Description: HappyMat(TM) is developing a smart interactive physical product incorporating embedded electronics, sensors, LED lighting, a digital display, Wi-Fi/Bluetooth connectivity, and other interactive features. We are seeking an IoT / Mobile-Web Control Interface Engineer to develop a simple control interface for HappyMat Prototype #1 and collaborate closely with our embedded/firmware engineer. Primary Responsibilities: • Develop a simple mobile-friendly or web-based control interface. • Communicate with the HappyMat embedded controller over the selected Wi-Fi/Bluetooth architecture. • Provide basic controls for applicable prototype functions. • C...

# Simple Customer Management System I’m looking for a freelancer to help develop a simple **Customer Management System** for a project. The system will have three user roles—**Customer, Staff, and Admin**—and should provide a clean, responsive, and easy-to-use web interface. The project should use a lightweight and familiar technology stack: - **Frontend:** HTML, CSS, and Vanilla JavaScript - **Backend:** PHP - **Database:** MySQL - **Authentication:** PHP sessions with role-based access control - **Reports:** PDF and CSV export ## Main Features ### 1. Registration and Login - Public customer registration form - Secure login and logout system - Session-based authentication - Password hashing - Role-based access control - Users should only access pages and features a...

I’m assembling a cross-platform solution that links university students to corporate recruiters through three core experiences: • Student profiles that hold rich, searchable content—at launch this means text descriptions and images, with embedded project links and dynamic skill tags. • A job board where students slice results by role type, location, domain and salary. • A Kanban-style ATS for recruiters, mirrored by a real-time status dashboard on the student side. Authentication is social-only for now, using Google OAuth. Please structure the auth layer so additional providers or SSO can drop in later without a refactor. Tech stack expectations Web: React.js or Next.js. Mobile: Flutter or React Native—feature parity with the web version. Backe...

I want to launch a feature-rich social media application built natively for Android. Because the focus is Android only, the entire UX should follow Google’s latest Material Design guidance and take advantage of Kotlin (or Java if you have a strong case). Core scope • Account creation, secure login and profile editing • Dynamic feed with posts, images, likes and comments in real time • Push notifications for follows, messages and activity • Basic in-app messaging (text and images) • Admin dashboard or simple backend panel for moderating content I’ll provide branding assets and the initial wireframes; you’ll translate them into a polished UI, develop the app, connect it to a scalable backend (Firebase or a RESTful service—happy to ...

**PHP Developer Wanted | Websites & Business Software** We are building a range of websites and online applications that help businesses manage their daily operations. Our projects include custom websites, digital restaurant menus, invoicing software and business management tools. We are looking for a motivated PHP developer who enjoys turning ideas into practical, reliable applications and wants to contribute to a growing development team. **What you will work on** * Custom websites and content management systems * Online menus for restaurants and hospitality businesses * Invoicing software and customer management tools * Connected business modules and REST APIs * Third-party integrations and AI-powered features **Your skills** * Professional PHP development experience, up to a ...

I’m gearing up to launch a brand-new Android app that lets my hardware-shop customers browse products, add items to a cart, and place orders straight from their phones. The focus is strictly on online sales and ordering—no inventory management module for now—so every screen should guide shoppers smoothly from discovery to secure checkout. Core flow I need: • Product catalogue with categories, search, photos, prices and live stock count pulled from our existing SQL database (REST/JSON endpoint is ready). • Cart, quantity edits and promo-code field. • Checkout supporting cash-on-delivery plus at least one standard payment gateway (Stripe or Razorpay is fine). • Order confirmation, push notification updates and a simple order-history screen. &bul...

I am currently working on an existing CRM web application and need an experienced developer to help me fix a few issues in the project. The project is already developed, so I am NOT looking for someone to rebuild the CRM from scratch. I mainly need 1–2 hours of hands-on technical help from someone experienced with the existing stack. What I need help with: Identify and fix existing backend/API issues Debug code Resolve frontend-to-backend communication problems Fix request/response or JSON-related issues Check existing API logic and suggest corrections Explain the root cause of the issues so I can continue working on the project myself This is a short-term debugging/mentoring task, expected to take around 1–2 hours. I would prefer someone who has strong experience wit...

We are looking for a Python developer for a small data cleaning and processing project. The task involves working with a provided dataset, identifying data quality issues, and preparing the data in a clean and consistent format for further use. Scope of Work:- * Review and understand the provided dataset. * Identify and remove duplicate or irrelevant records. * Handle missing, incomplete, or inconsistent data. * Standardize text and data formats where required. * Clean and normalize user-generated/text-based data. * Apply basic Natural Language Processing techniques where needed. * Create a reusable Python script for the data cleaning process. * Integrate the processing logic with a basic Django backend/API. * Provide the cleaned dataset along with the source code. Requirements:- * Stro...

Senior Developer Wanted: CRM, Email Automation & Multi-Channel Communication App We're hiring an experienced senior full-stack engineer, or a small team of specialists, to design and build a modern, scalable, cloud-based internal sales and communication platform for our team of 10-100 sales colleagues. The platform brings CRM, client management, automated outreach, and several communication channels together in a single web application. Scope of Work :- Platform architecture, user accounts, and role-based access CRM with contact and lead management Email automation, campaigns, and follow-up sequences Unified inbox and cross-channel communication SMS and business messaging integrations Voice/VoIP and call handling Integrations with third-party APIs Analytics and reporting dashbo...

I run an active intraday desk on Upstox and want to take my fastest-moving scalping rules out of the spreadsheet and into a fully automated workflow. The goal is a bot (or tightly written API layer) that logs in to my Upstox account, listens to live market data, and fires orders within milliseconds once the scalping signals hit their thresholds—no manual clicks involved. Core scope • Market: strictly intraday equity and index instruments, required options logic for this build. • Strategy: I have my own stratagy to deploy for bot • Functionality: automatic trade execution with position sizing pulled from a config file so I can tweak quantities without touching the code. Tech expectations Python is preferred because I already host other scripts on a VPS, but I am...

We are looking for an experienced developer to build a modern, responsive full-stack web application using and Node.js. Requirements: frontend with responsive and clean UI Node.js/Express.js backend and REST APIs MongoDB database integration User authentication and role-based access Admin dashboard for managing users and content Form validation and error handling API integration and secure data handling Performance optimization and deployment support The ideal developer should have strong experience with , Node.js, MongoDB, and modern web development practices. Good communication and attention to detail are important. Please share relevant examples of your previous work when applying.

I’m looking to wire together a fully automated flow where TradingView fires the signal and Delta Exchange carries out the trade—no manual clicks in between. Here is the current framework I already follow: • Indicators: 200-EMA is the backbone, combined with one additional indicators (EMA based) that I’ll share once we start. • Signal logic: a trade is triggered whenever my chosen indicators cross the 200-EMA. • Trade type: Sell Options only—no futures or spot orders. What I need from you is a Pine Script strategy that produces the exact sell-option alerts and a middleware (webhook listener, small server script, or similar) that catches those TradingView alerts and pushes the corresponding order to Delta Exchange through their REST API. Po...

I’m building a web-based product and need a seasoned Java developer to own the server side. The stack is straightforward: Spring Boot for the application layer, PostgreSQL for persistence. I already have the front-end team working on REST calls and a basic schema sketched out, so what I need now is a clean, well-structured backend that exposes the endpoints, handles business logic, and talks to Postgres efficiently. You’ll design and code the REST API, wire it to PostgreSQL with JPA/Hibernate, and set up sensible error handling, security (JWT is preferred), and unit tests. Maven or Gradle is fine—just keep the build simple and reproducible. A Dockerfile for local runs will help my QA team spin it up quickly. Deliverables • Full Spring Boot project with source cod...

I am ready to commission a complete, web-based management suite for a multi-store shopping mall. The project must cover two distinct areas: 1. A mall-level administration panel that tracks tenants, leases, foot-traffic analytics, promotions, and finance. 2. A store-level back office where each retailer can handle day-to-day tasks such as product catalogues, inventory, staff rosters, and sales reporting. Every screen has already been drafted; page 3 of the attachment contains the reference mock-ups that must be followed pixel-for-pixel while remaining fully responsive for desktop and large-tablet browsers. Key scope elements • Build a single-page web application that communicates with a secure REST (or GraphQL) API. • Design and implement the database schema, access l...

I’m building LoadLink, a system that pairs trucks with paid cargo for their empty-leg journeys. The first release must revolve around truck owners, giving them a fast way to secure profitable return loads while they are still on the road. Core experience • Web portal and companion iOS/Android app share one account. • Owners receive instant load-availability notifications, can filter by lane, weight, equipment type, pick-up window, and price, and then lock a load in real time. • Once a load is accepted, live GPS tracking updates both the owner and shipper until proof-of-delivery is uploaded. Tech expectations I’m open to React (or similar) for the web front-end, Flutter or React Native for mobile, and a REST/GraphQL API backed by a scalable database su...

I need an end-to-end AI-driven system that takes our current, largely manual order fulfillment flow and turns it into a seamless, touch-free process. The immediate focus is the fulfillment stage itself—everything that happens from the moment an order hits our ERP through confirmation that the shipment is on its way to the customer. Inventory management and broader transportation logistics automation may follow later, but for now I want to perfect fulfillment first. Here’s what I have in mind: • Ingest live order data from our existing platform (an SQL-backed ERP with open REST APIs). • Use rules-based logic and machine-learning models—Python, Node, or a comparable stack are all fine—to decide routing, allocate stock, and trigger pick/pack instructions ...

I have a small Node.js project that is already up and running; what’s missing is one last feature set that I haven’t had time to code myself. Everything else—routing, basic views, and the repo structure—is in place. Here’s what you’ll do for me: • Clone the private GitHub repository I’ll provide. • Implement the outstanding feature exactly as outlined in the existing TODO comments and the short README task list. • Push clean, well-commented code and open a pull request so I can review the diff easily. Acceptance criteria 1. npm install && npm test passes without modifications to the test suite. 2. eslint (already configured) returns zero errors. 3. The new feature is accessible through the existing REST endp...

I’m starting from a clean slate and need a fully working e-commerce site that marries a modern, responsive frontend with a Python-driven backend and integrated machine-learning intelligence. The heart of the platform will be three AI/ML capabilities: detailed data analysis of customer behaviour, on-the-fly sales prediction, and a personalised recommendation engine that learns from every interaction to boost conversions. On the web side, I expect a slick UI that renders flawlessly on mobile and desktop, secure user authentication, payment handling, and an admin dashboard that surfaces key metrics through interactive charts. The backend should expose well-documented REST or GraphQL APIs, connect to either SQL or MongoDB (your call), and remain easily deployable on a standard cloud...

I need a cross-platform mobile app (native or Flutter/React Native is fine) that becomes the digital “clubhouse” for my shooting association, available on both iOS and Android. Core idea Members, coaches, and administrators should each log in and see a tailored dashboard. For members, the focus is on personal metrics and statistics—think scores, weapon categories, training hours, accuracy charts, and similar data visualisations. Coaches must be able to review those same stats in aggregate, assign training programs, publish events, and record notes. Administrators handle everything: approving memberships, creating tournaments, updating rankings in real time, and monitoring documents that are about to expire (gun licences, insurance, medical certificates, etc.). Feature...

Project Title: EfficientIP SOLIDserver DDI Consultant (DNS, DHCP, IPAM): Senior Freelancer Project Description: We are looking for a senior freelance consultant to support enterprise DDI (DNS, DHCP, IPAM) projects built on EfficientIP SOLIDserver. You will work as a technical lead on client engagements covering architecture, deployment, migration and automation. What you will do: - Design resilient, secure DDI architectures across on-prem, hybrid and multi-cloud environments - Plan and execute migrations from Infoblox, VitalQIP or Microsoft DNS/DHCP to SOLIDserver - Automate provisioning using REST APIs, Terraform, Ansible and Python - Configure DNS security features and integrate with SIEM and ITSM tools such as ServiceNow - Produce design documents, run-books and handover training - M...

We are looking for an AI-assisted Full Stack Developer to support an ongoing Logistics, Transport and Fleet Management System project.   Current project includes:   • AutoCount Integration • Order Management • AI Dispatch Planning • Route Optimization • Vehicle Management • Driver Management • Maintenance Management • Fleet Operation Dashboard • Reporting & Analytics   The system is already built and currently entering UAT and enhancement stage.   This is NOT a traditional programming project.   We are specifically looking for developers who actively use:   • ChatGPT • Claude • Claude Code • Cursor • GitHub Copilot • Gemini   The project follows a Vibe Coding approach where bus...

Project Title: Scalable Food & Beverage Management Platform – Flutter & Firebase Project Overview I’m looking for an experienced Flutter developer to build and enhance a modern, scalable Food & Beverage Management Platform with a premium UI, smooth user experience, and clean architecture. The current MVP is focused on a coffee shop ordering application, but the platform should be designed from the beginning to support different types of businesses in the future, including coffee shops, cafés, restaurants, bakeries, dessert shops, food & beverage businesses, inventory management, and multi-branch businesses. The goal is to build a real-world, production-ready platform that can grow beyond a single coffee shop without requiring a complete rebuild of the...

Hi, I'm building Insigra Reports, a reporting platform for businesses. Customers pay on our Shopify site, log in to our platform, pick a ready-made report, connect their tools (Google Ads, Meta, GA4, etc.) and get branded PDF reports by email every week or month. I need a developer to build the platform in WeWeb + Supabase. Some groundwork is already done. Main parts: - Report gallery with templates - Connect customer tools through our connector API - Daily data sync - PDF reports sent by email - Shopify payment linked to access - Admin panel Full details will be shared with shortlisted developers. Please start your bid with "REPORT HOUSE" and share: 1. WeWeb apps you have built 2. Your timeline Long-term work possible for the right person.

Title: WordPress Developer (Astrology API Integration) Responsibilities: Develop a WordPress website integrating astrology APIs (Navamsha & Vedika). Implement features like Kundali generation, Panchang, Dasha predictions, matchmaking, and horoscopes. Create user‑friendly front‑end with charts, reports, and interactive elements. Optimize performance with caching and efficient API call handling. Ensure mobile responsiveness and SEO‑friendly structure. Provide documentation for API integration and site maintenance. Requirements: Strong experience with WordPress (themes, plugins, custom development). Proficiency in PHP, JavaScript, and REST API integration. Familiarity with astrology APIs (Navamsha, Vedika, or similar). Knowl...

I’m building a small-scale payment gateway that lets shoppers on my e-commerce site pay with TRX, Ethereum, BTC, XMR, and LTC. The focus is on a clean, dependable setup rather than heavy, enterprise-level security; standard encryption, confirmation checks, and basic anti-fraud routines will be enough for this first release. The gateway must handle both one-time and recurring payments. I’ll need simple merchant controls—think invoice generation, transaction status, and refund trigger—plus a lightweight REST or GraphQL API so my front-end can display QR codes, wallet addresses, and live confirmation counts without page reloads. Because I’m turning this into a standalone service for my own products, the codebase should be modular: a core processing service (No...

I’m planning a brand-new social media experience built exclusively for Android and need a developer who can carry it from first wireframe all the way to a polished Play Store release. The goal is a familiar yet fresh environment where users create profiles, share photos or short videos, follow one another, chat in real time and receive push notifications. I’d like clean, well-documented Kotlin or Java code, a modern Material-You interface and a lightweight, scalable backend—Firebase or a custom REST API, whichever you can justify best. Core features include secure sign-in (email, phone and Google), content upload with basic moderation tools, and analytics hooks so I can track engagement. Deliverables • Production-ready Android app (.apk and full source) • ...

I’m looking for someone who can split their time between two intertwined needs. First, I need a supervised-learning model built from the ground up that can handle time-series prediction. I already have historical data; what I’m missing is the full model-development workflow—feature engineering, training, validation, and iteration—implemented in clean, well-documented Python (TensorFlow, PyTorch, or similar). Accuracy, reproducibility, and the ability to improve the model later are essential. Second, my web platform (Node.js + React on a Postgres backend) needs ongoing full-stack enhancements so the forecasting engine can be surfaced through a secure API and intuitive dashboard. You’ll take model outputs, expose them through endpoints, and build the front-e...

I’m expanding our product team in Trivandrum kerala and need three full-time specialists who can sit side-by-side with our existing engineers and designers. Front-End Developer Your main mission is to turn our product requirements into polished, React-based user interfaces. You’ll own new user-facing features from wireframe to production, keep component libraries tidy, and push regular commits into our CI pipeline. A solid command of modern React (hooks, context, functional components) is non-negotiable, and you should be comfortable pairing with our UI/UX designer to bring every pixel to life. Back-End Developer You’ll focus on stitching together our micro-services through clean, well-documented API integration. Expect to write and consume REST/GraphQL endpoi...

We are seeking a highly skilled Data Engineer to join our onsite team. In this role, you will design, build, and optimize complex, highly scalable big data pipelines and infrastructure on AWS to support advanced regulatory analytics, surveillance systems, and market research. Key Responsibilities Pipeline Development: Design, develop, and maintain high-performance ETL/ELT data pipelines capable of ingesting and transforming massive volumes of structured and unstructured financial data. Big Data Processing: Utilize PySpark, Apache Spark, and AWS EMR to process billions of records efficiently, ensuring low latency and high reliability. Cloud Architecture: Architect and optimize solutions within FINRA’s AWS data lake and data warehousing environment (S3, Athena, Glue, Snowflake, Prest...

Sto sviluppando un’applicazione che deve dialogare direttamente con il cloud TTLock tramite le loro REST API. Mi occorre un’integrazione pulita e ben documentata che mi permetta di controllare da remoto le serrature (apertura, chiusura, creazione/cancellazione e gestione di e-keys e codici temporanei). Scenario – Dispongo già di un account developer TTLock e di tutte le credenziali (clientId, clientSecret, redirect URI). – Il mio software gira su un server Linux; sono flessibile sul linguaggio purché l’SDK o il codice sia open-source e facilmente manutenibile (Node.js, Python o PHP vanno benissimo). – L’integrazione verrà poi richiamata da un gestionale interno; non servono CMS, CRM o ERP preconfezionati. Di cosa ho bis...

Integración de Zoho Creator con API de Tupana – Deluge + Webhook Busco un desarrollador con experiencia comprobable en Zoho Creator, Deluge e integraciones mediante APIs REST para completar una integración entre una aplicación existente en Zoho Creator y la plataforma de facturación electrónica Tupana. La aplicación y el formulario de emisión ya existen. El objetivo no es desarrollar el sistema desde cero, sino conectar correctamente el formulario actual con Tupana para que los datos de una boleta/factura puedan enviarse, procesarse y posteriormente actualizar el mismo registro de Zoho Creator con la información devuelta por Tupana. Flujo que debe implementarse 1. Envío desde Zoho Creator hacia Tupana Desde el formul...