Java

I need a clean, well-documented REST API that lets third-party sellers submit, update, and delete physical product records in our catalogue. Each request must be secured with an API-key header; no other auth method is required... (Budget: £10 - £20 GBP, Jobs: API Development, FastAPI, Java, MySQL, Node.js, PHP, REST API, RESTful)

Saya membutuhkan seorang profesional untuk merancang dan membangun aplikasi edukasi berbasis Android. Fokusnya adalah menghadirkan konten pembelajaran interaktif yang mudah di­akses siswa melalui ponsel... (Budget: $15 - $25 USD, Jobs: Android, Android App Development, Graphic Design, Java, Kotlin, Logo Design, Mobile App Development, Mobile App Testing, Mobile Development, REST API)

My Android app was recently suspended in Google Play, and my entire developer account is now at risk. The notice states a Privacy Policy violation, but beyond that Google’s wording is vague. I need... (Budget: ₹1500 - ₹12500 INR, Jobs: Android, App Development, App Store Optimization, Compliance, iPhone, Java, Mobile App Development, Mobile App Testing)

Looking for the advanced catcher for mturk to catch hits aggressively. It should catch hits faster than any other catcher. (Budget: ₹3000 - ₹3500 INR, Jobs: Java, JavaScript, PHP)

I’m looking for a Java developer who can turn my existing MySQL schema for a Student Management System into a fully-functional REST service. The project must be built with Spring Boot, Hibernate/JPA, and... (Budget: ₹100 - ₹400 INR, Jobs: cURL, Documentation, J2EE, Java, MySQL, REST API, Software Architecture, Spring Boot)

I have a live mobile music app that needs a short round of improvements before the next release. The highest-priority item is to add Sign in with Apple alongside Facebook Login so users can authenticate seamlessly on both iOS and Android... (Budget: $30 - $250 USD, Jobs: Android, Android App Development, Android Studio, iPhone, Java, Kotlin, Mobile App Development, Mobile Development, User Interface / IA, XML)

I want a simple app with integration of chatgpt I will narrate the items quantity rate then chatgpt will create a invoice and print it (Budget: ₹600 - ₹1500 INR, Jobs: Android, API Integration, App Development, Chatbot, ChatGPT, iPhone, Java, Mobile App Development, Software Testing)

I need an Android application that will sit in Google Play and do one thing brilliantly: keep tennis and football fans updated through spoken score alerts. Here’s the core flow I am after: • A clean,... (Budget: $30 - $250 USD, Jobs: Android, Android App Development, API Integration, App Store Optimization, Java, JavaScript, Kotlin, Mobile App Development)

We're building AffirmoBot, a voice-automation product that helps Indian banks confirm suspicious transactions with customers via automated phone calls. The proof-of-concept is built and working (Python/FastAPI backend, tested API, live demo deployment)... (Budget: ₹750 - ₹1250 INR, Jobs: Android, API Development, API Integration, FastAPI, Java, Mobile App Development, PostgreSQL, Python)

I already sketched the workflow for a quotation tool in a quick HTML demo, but the prototype is glitch-ridden and too limited for daily studio use. I now want a production-ready Android application, built... (Budget: ₹600 - ₹1500 INR, Jobs: Android, Android App Development, Android Studio, HTML5, Java, Kotlin, Mobile App Development, Mobile Development)

Estoy en la fase inicial de una aplicación móvil para Android cuyo fin es controlar las actividades diarias en cuatro propiedades. El código base es mínimo, de modo que necesito a alguien que pueda arrancar el proyecto de forma estructurada y llevarlo hasta una versión funcional estable... (Budget: $10 - $30 USD, Jobs: Android, Android App Development, Android Studio, Java, Kotlin, Mobile App Development, Mobile Development)

I’m building a remote-access MQTT broker dedicated to industrial environments and I need an experienced developer to set it up, harden it, and prove it can reliably move three live data streams—temperature... (Budget: ₹37500 - ₹75000 INR, Jobs: API, Cloud, Data Analytics, Data Integration, Java, Linux, MQTT, Network Administration, System Administration, Ubuntu)

I have an entertainment Android app whose current APK forces disruptive ads and caps how long the user can enjoy its premium content. I already possess the latest APK; what I need now is a clean rebuild... (Budget: ₹600 - ₹1500 INR, Jobs: Android, Android App Development, Android Studio, Java, Mobile App Development, Mobile App Testing, PHP, Reverse Engineering)

AI Multi-Exchange Crypto Arbitrage Trading Bot I am looking for an experienced developer to build a professional AI-powered cryptocurrency arbitrage trading bot. Main Objective The goal of this bot... (Budget: $30 - $250 AUD, Jobs: AI Development, API Development, C Programming, Cryptocurrency, Data Analysis, Data Science, Java, Machine Learning (ML), PHP, Software Architecture)

The assignment is to build a production-ready Android DMT (Domestic Money Transfer) application that covers the full user flow—from sign-in to settlement—while remaining fast, lightweight and fully compliant with banking security standards... (Budget: ₹75000 - ₹150000 INR, Jobs: Android, Android App Development, API Integration, Java, Kotlin, Mobile App Development, Mobile Development, PHP)

I need an experienced trading-bot developer to plug a robust, state-machine-driven framework into both the Bybit and BingX APIs at the same time, not one after the other. Your existing, battle-tested architecture... (Budget: $750 - $1500 USD, Jobs: API, Bot Development, C Programming, Java, Metatrader, PHP, Python, Software Architecture, Telegram API)