RESTful Jobs

I’m finalising the design of an NFT marketplace front-end in and now need a seasoned blockchain developer to carry it the rest of the way. The job centres on two areas: • Smart contract development – write, test and, after review, deploy ERC-721/1155 contracts on Polygon. Royalty logic, minting limits, and a simple marketplace module for fixed-price sales must be baked in and gas-optimised. • Seamless blockchain-frontend integration – connect those contracts to my existing codebase. That includes wallet connection (MetaMask & WalletConnect), signature flows, token metadata handling on IPFS/Pinata, and live sale status updates pulled via web3 hooks. I have wireframes, UI components, and a clean repo ready. You would fork, add contracts (Hardhat/Foundry p...

Here's a resume-ready project description: --- **NFC MedScan — Full-Stack Healthcare System** *Java, Spring Boot, React, PostgreSQL, JWT, REST API* Built a full-stack NFC-based patient data management system enabling hospital staff to instantly access patient medical profiles by scanning NFC cards. The system consists of a Spring Boot 3 REST backend deployed on Render, a patient-facing portal, and a hospital staff portal — both deployed on Vercel. **Key technical highlights:** - Designed and implemented a secure REST API in Spring Boot 3 with role-based access control (RBAC) supporting five roles: PATIENT, DOCTOR, NURSE, RECEPTIONIST, and ADMIN - Integrated JWT authentication and Google OAuth 2.0 (Google Identity Services) for dual sign-in support - Built data consent...

You’ll be taking charge of the server-side work for my application, and the core focus is clear: build a set of robust, well-documented RESTful APIs in Java. All persistence logic, request/response handling, and authentication layers will live in this codebase, so clean architecture and disciplined error handling matter a lot. Here’s what I expect to come out of this collaboration: • A modular Java codebase (Spring Boot or similar is fine) that exposes the required REST endpoints. • Well-structured data models mapped to the underlying database of your choice, with migrations/versioning in place. • Postman (or equivalent) collection and Swagger/OpenAPI documentation that let any front-end or third-party consumer hit the routes without guessing. • Unit...

Hi everyone, Let’s skip the fluff. I am not looking for a frontend or UI developer. I am running a digital products store, and I need a strong backend automation scripter (preferably Python) to build the data flow pipeline between my existing infrastructure. We process around 50 orders a day and are scaling up, so I need an automated engine that can handle this volume without bottlenecking. The Infrastructure (What we already have): Account Creation Tool: A dedicated internal system that generates raw web accounts. Unique-API Generator: A customized fork of sub2api running on our VPS. This handles the conversion of web accounts into usable API keys. We already have the core functionalities built into this fork. The Storefront: The platform that processes incoming customer order...

This project involves building the full GBS website from the ground up using Laravel on the back end and React on the front end. All persistent data will live in PostgreSQL, while real-time interactions will run through WebSockets so the interface can push live updates without page refreshes. Core features that must ship: • Secure user authentication (registration, login, password reset) • Real-time updates via WebSockets (chat-like notifications and live dashboard figures) • Interactive data-visualization components that pull from our API and auto-refresh when new data arrives The codebase should follow a clean MVC structure in Laravel, expose RESTful (or GraphQL if you prefer) endpoints for React, and keep WebSocket events neatly namespaced. Please include a concis...

I want to launch an Android-only rewards platform where users can make money by interacting with advertisers’ content. The primary earning action will be, in your own words, “that meets your character requiremen.” To make that meaningful for users and advertisers alike, I need three core earn-out mechanics built in: • Watching short video ads • Installing promoted apps • Using those apps for a set time A rock-solid, tamper-proof tracking layer is essential. I have to verify screen-on time, foreground usage, installs, and session length so our payout logic cannot be gamed. Please outline the SDKs, APIs, or custom services you will employ (e.g., Google Play Install Referrer, UsageStatsManager, Firebase, Adjust, or your preferred mix) and explain how y...

Preciso de um desenvolvedor com experiência comprovada na API oficial do iFood. Já possuo um ERP próprio em PHP + MySQL. Preciso de acesso/configuração da API para integrar meu ERP ao iFood. Objetivos: - Enviar produtos do meu ERP para o cardápio do iFood - Atualizar preços dos produtos no iFood pelo ERP - Controlar disponibilidade/estoque dos produtos no iFood - Receber pedidos automaticamente no ERP - Obter detalhes dos itens vendidos - Atualizar status dos pedidos Importante: não preciso que desenvolva meu ERP. Preciso de alguém com experiência real na API do iFood para viabilizar acesso, credenciais, webhooks e orientação técnica.

PROJECT: Complete Gym Management SaaS (Laravel) We are looking for an experienced Laravel/PHP developer to complete and optimize our Gym Management SaaS platform. Current Status: * Laravel-based system already developed * Membership management working * Renew membership module working * Payment tracking available * Email notifications available * WhatsApp integration pending * Dashboard partially redesigned Required Tasks: 1. Membership & Subscription * Fix renewal workflow * Support upgrade, renew, PT packages, classes, and additional services * Maintain full membership history * Prevent old memberships from disappearing * Ensure only one active membership at a time 2. Payment & Transactions * Complete transaction history * Pending balance tracking * Partial payment suppor...

I’m kicking off a full-stack project and need an experienced developer who can attack both the front-end and back-end at the same time. The stack is already defined: Node.js (my preferred choice even on the front end), React.js with Redux, and a microservice layer in Java Spring Boot. RESTful APIs, PostgreSQL or MySQL on the relational side, and MongoDB for document storage are all part of the architecture. Speed matters—I’m looking to see working code as soon as possible, so we’ll iterate quickly and ship incremental features rather than wait for a big-bang release. Modern JavaScript (ES6+), async/await patterns, and clean module structure are must-haves; so is writing well-tested, production-ready Java Spring Boot microservices. High-level deliverables: • R...

Senior Flutter + Stripe Connect Developer Needed Transform Existing Stripe Onboarding Into Airbnb/Turo Style Marketplace Experience About Jebby Jebby is a two-sided rental marketplace that allows users to rent everyday items from other people in their community. Think: * Airbnb for everyday items * Turo for tools, equipment, electronics, outdoor gear, etc. We currently have: * Flutter mobile application (iOS & Android) * Node.js backend * Stripe Connect Express integration already working * Existing provider onboarding flow implemented * Existing renter and provider marketplace functionality Current Situation Our current provider onboarding uses Stripe Connect Express onboarding. The onboarding has already been redesigned and currently follows: 1. Start Earning 2. Introducti...

My inventory management SaaS already works well once a user is inside, but everything around it still relies on manual steps. I need a developer who can remove every bit of human intervention from the subscription flow and add a few accounting-focused upgrades at the same time. User onboarding automation • The system must let new customers create an account, choose a subscription, set their username and password, pay, and land inside their dashboard automatically. • No staff touch-points: after payment, access should be provisioned instantly, including any trial logic or plan limits. • Please include email verification, forgotten-password flow, and basic subscription management (upgrade, downgrade, cancel). Inventory add-on priority The immediate module I want wove...

I’m enhancing an existing PHP application and now need an experienced developer to wire in several third-party services. The core of the job is to analyse each provider’s endpoint requirements, extend or refactor the current codebase where necessary, and make sure the new integrations run smoothly alongside what is already in production. You will be working with modern PHP (object-oriented, namespaced) on a LAMP stack, so familiarity with RESTful requests, webhooks, JSON handling, and robust error logging is essential. Security is a must—token management, input sanitisation, and graceful failure states all have to be considered from the outset. I’ll give you access to the repository, environment details and any documentation the vendors supply. Your work should pl...