Java

Tenho alguns aplicativos Android em produção e preciso de suporte pontual para analisá-los, corrigir eventuais problemas e conduzir todo o processo de atualização na Google Play. O que procuro • Alguém que trabalhe rotineiramente com Android Studio, Kotlin e Java... (Budget: $250 - $750 USD, Jobs: Android, Android App Development, Android Studio, App Publication, HTML5, Java, Kotlin, Mobile App Development, Mobile Development, Software Testing)

I’m building a secure, cloud-hosted web application and need a senior full-stack partner who can take it from architecture to production. The user-facing layer must be written in React and the back end in Node.js; beyond that I’m open to the exact supporting libraries you find most productive... (Budget: £20 - £250 GBP, Jobs: CI/CD, Cloud Computing, Express JS, Full Stack Development, Java, Node.js, NoSQL Couch & Mongo, PostgreSQL)

SA-MP Mobile Multiplayer Roleplay Game Developer Required I am looking for an experienced developer/team to build and fully set up a SA-MP based mobile multiplayer roleplay game similar in concept to mobile SA-MP games such as Grand Mobile / Black Russia... (Budget: ₹500000 - ₹1000000 INR, Jobs: Android, C++ Programming, Game Design, Game Development, Java, Linux, Mobile App Development, MySQL, Node.js, PHP)

I need testers to opt in to the closed testing track for 2 Android apps on Google Play, so I can meet Google's requirement of 12 opted-in testers per app before applying for production access. What I... (Budget: $10 - $30 USD, Jobs: Android, Android App Development, Java, Mobile App Development, Mobile App Testing, Mobile Development, Software Testing, Test Automation, Testing / QA, User Experience Research)

German / EU based Ich suche Unterstützung, um ab Oktober innerhalb von sechs Monaten eine individuelle Plattform für eine Bank aufzubauen. Geliefert wird mit AI Agenten (Claude Code und Co.) , um moderne... (Budget: min €36 EUR, Jobs: API, API Development, Automation, Cloud Computing, HTML, Java, JavaScript, Microservices, Next.js, Node.js)

I need an experienced Android developer who can help me root my Android device safely. Requirements: * Identify the correct rooting method for my exact device/model * Bootloader unlocking guidance *... (Budget: ₹600 - ₹1500 INR, Jobs: Android, Android App Development, Android SDK, C Programming, Java, Mobile App Development, Mobile Development, Mobile Repair)

I am looking for a Senior Backend Software Engineer to help design and build a scalable, production-grade Agentic Data Platform. The project focuses on building backend infrastructure for LLM-enabled data ingestion, enrichment, processing, and discovery across large and complex datasets... (Budget: $25 - $50 USD, Jobs: API Development, Backend Development, Database Design, Docker, Golang, Java, Microservices, Node.js, NoSQL Couch & Mongo, Python)

I’m looking for a complete marketplace listing solution built with PHP (latest stable version) and MySQL on the back-end, paired with a native Android app. The web portal should let me manage three distinct roles—Admin, Seller, and Buyer—each with the appropriate dashboards and permissions... (Budget: $250 - $750 USD, Jobs: Android, API Development, Database Design, Database Management, Java, Kotlin, Mobile App Development, MySQL, PHP, Web Development)

We run a workflow-automation SaaS that lets customers build event-driven processes, route approvals, and call external services. The stack is Java 17, Spring Boot, PostgreSQL, Celery, Redis, Docker and AWS, all delivered in a fully multi-tenant environment... (Budget: $1500 - $3000 USD, Jobs: Amazon Web Services, AngularJS, API Development, Celery, Docker, Java, Node.js, PostgreSQL, Redis, Spring Boot)

Yomama Investments YOMAMA Investments is an existing single-player web prototype: a Bloomberg-style retail "terminal" wrapped around a playful economy game (buildings, production, marketplace) and a paper-trading engine... (Budget: $1500 - $3000 USD, Jobs: Backend Development, Database Management, Game Development, Java, JavaScript, Mathematics, PHP, Web Development)

### Project: Android App Closed Testing – 12 Testers for 14 Days I have developed an Android board game called **“Bagh Chal – Tigers & Goats”**, which is currently in Google Play Console Closed Testing... (Budget: ₹600 - ₹1500 INR, Jobs: Android, Android App Development, Game Development, Game Testing, Java, Mobile App Development, Software Testing, Testing / QA)

Dear Partner, We have active requirements for production-grade software codebases for acquisition/licensing. :small_blue_diamond: Required Technology Stacks • COBOL, Fortran, RPG. • .NET Framework / Legacy C#... (Budget: $5000 - $10000 USD, Jobs: .NET, C# Programming, C++ Programming, COBOL, Fortran, Java, Ruby, Rust)

I’m ready to turn my wire-frames and feature list into a real, installable mobile app that runs on both iOS and Android from a single codebase. Because my main goal is personal learning, I want every part of the project to be structured so I can study and extend it later... (Budget: $15 - $25 USD, Jobs: Android, Documentation, Flutter, iOS Development, iPhone, Java, Mobile App Development, React Native)

I have a small in-house codebase that already runs a few large-language-model helpers, but I now need to expand it with three new agents: a Sales Assistant, an Email Agent, and a Document Management Agent... (Budget: $250 - $750 USD, Jobs: AI Agent Swarms, AI Chatbot Development, Java, JSON, LangChain, OpenAI, PostgreSQL, Python)

I need a straightforward Android-only application that lets me record the daily status of each customer order while I’m on the go. The core flow is simple: open the app, pick or type an Order ID, choose... (Budget: ₹750 - ₹1250 INR, Jobs: Android App Development, Android Studio, Java, Mobile App Development, PHP, SQLite, User Interface / IA)

I need a production-ready Android finance application that will easily clear a formal security review. I will hand over the compliance matrix, API partner documentation, and branding assets; your job is... (Budget: $25 - $50 USD, Jobs: Android, API Integration, CI/CD, Copy Typing, Copywriting, Java, Kotlin, Mobile App Development, Mobile App Testing, Security)

I’m building an Android-only app that lets customers browse our services, lock in an available time slot, and leave a deposit before the appointment is confirmed. I will supply the full set of business... (Budget: ₹12500 - ₹37500 INR, Jobs: Android, Android App Development, App Design, App Development, Java, Kotlin, Mobile App Development, PHP)

I’m building an Android-only e-commerce application and want to nail the browsing experience first. The core task is to create a smooth, responsive product-listing and search module. Shoppers must be able... (Budget: $30 - $250 USD, Jobs: Android, Android App Development, Android Studio, API Integration, C# Programming, Java, Kotlin, Mobile App Development)

Context: This is running lighting for a fraternity house party and future house events, not a professional install. Priority is that it works reliably and is quick to set up, not that it's built a specific way... (Budget: $250 - $750 USD, Jobs: Audio Editing, Audio Engineering, Audio Processing, C# Programming, C++ Programming, Java, JavaScript, Lighting Design, Node.js, Software Development)

I need a focused, field-ready Android application that lets our security personnel capture incidents the instant they occur. The flow is straightforward: officers open the app, complete a structured incident... (Budget: $15 - $25 USD, Jobs: Android, Android App Development, Java, Kotlin, Mobile App Development, Mobile Development, PHP, User Interface / IA)