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Raul D.

Madrid, Spain

$17/hr
5.0
1 jobs

I turn ideas into real products โ€” whether that's a game, an app, or a website. I'm a developer with experience across three worlds: game development, mobile apps, and web. I pick the right tool for the job and get it done. What I work with: ๐ŸŽฎ Games โ†’ Unity ยท Unreal Engine ยท C# ยท C++ ๐Ÿ“ฑ Mobile โ†’ Android Studio ยท Kotlin/Java ยท iOS ๐ŸŒ Web โ†’ React ยท JavaScript ยท HTML/CSS I'm the kind of developer who actually uses the things he builds โ€” so I care about how it feels, not just how it runs. I'm early in my freelance journey, which means I'm hungry, focused, and I treat every project like it's going in my portfolio โ€” because it is. Fast communication, no-BS updates, and code you can actually build on. Got an idea? Let's make it real.

  • Game Development
  • Web Development
  • Mobile App Development
  • JavaScript
  • HTML
  • CSS
  • GitHub
  • React
  • Bootstrap
  • C#
  • Node.js
  • Python
  • Firebase
Lucas G.

Valencia, Spain

$35/hr
5.0
47 jobs

๐Ÿฑ+ ๐˜†๐—ฒ๐—ฎ๐—ฟ๐˜€ ๐—ผ๐—ณ ๐—ฐ๐—ฟ๐—ฒ๐—ฎ๐˜๐—ถ๐—ป๐—ด ๐˜€๐˜‚๐—ฐ๐—ฐ๐—ฒ๐˜€๐˜€๐—ณ๐˜‚๐—น ๐—ด๐—ฎ๐—บ๐—ฒ๐˜€ ๐—ณ๐—ผ๐—ฟ ๐—ฐ๐—น๐—ถ๐—ฒ๐—ป๐˜๐˜€ ๐—ฎ๐—ป๐—ฑ ๐—ฝ๐—น๐—ฎ๐˜†๐—ฒ๐—ฟ๐˜€๐Ÿš€ ๐—•.๐—ฆ. ๐—ถ๐—ป ๐—–๐—ผ๐—บ๐—ฝ๐˜‚๐˜๐—ฒ๐—ฟ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ ๐—ณ๐—ฟ๐—ผ๐—บ ๐—˜๐—จ๐Ÿ…๐—˜๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜๐—ถ๐˜€๐—ฒ: ๐—จ๐—ป๐—ถ๐˜๐˜†, ๐—ฃ๐—ต๐—ฎ๐˜€๐—ฒ๐—ฟ๐Ÿ•น๏ธ๐—–๐—ฟ๐—ฎ๐—ณ๐˜๐—ถ๐—ป๐—ด ๐—ถ๐—บ๐—บ๐—ฒ๐—ฟ๐˜€๐—ถ๐˜ƒ๐—ฒ ๐—ด๐—ฎ๐—บ๐—ฒ๐˜€ ๐—ณ๐—ผ๐—ฟ ๐—ฃ๐—–, ๐˜„๐—ฒ๐—ฏ ๐—ฎ๐—ป๐—ฑ ๐—บ๐—ผ๐—ฏ๐—ถ๐—น๐—ฒ ๐ŸŽฎ ๐—ง๐—ผ๐—ฝ ๐—ฅ๐—ฎ๐˜๐—ฒ๐—ฑโœจ I'm an expert Game Developer focused on helping clients bring their creative ideas to life through engaging, high-quality games. My goal is to understand your vision, translate it into compelling gameplay, and deliver a polished final product that meets your audienceโ€™s expectations. What I Offer: โœ“ Complete Game Development: From concept to launch, I handle design, coding, and optimization for both 2D and 3D games. โœ“ Cross-Platform Expertise: I develop for PC, Web, and Mobile, ensuring your game reaches players wherever they are. โœ“ Engaging Gameplay Systems: Whether you need real-time action, strategy mechanics, or multiplayer experiences, I can design systems that keep players hooked. โœ“ Multiplayer Game Development: Proven experience building real-time and turn-based multiplayer systems using both peer-to-peer (P2P) and server-authoritative models, with features like matchmaking, lobbies, chat, and leaderboards. โœ“ Multiplayer Frameworks: Skilled with Mirror, Photon, SocketIO, and Colyseus, delivering scalable, secure, and responsive online gameplay. โœ“ Game Engines: Deep expertise in Unity, Unreal, and Godot, choosing the best tool for each projectโ€™s needs. โœ“ HTML5 Playable Ads: Fast-loading, interactive ads built for Google, Meta, TikTok, and Unity Ads. โœ“ Web Game Frameworks: Specialized in Phaser, Babylon.js, Three.js, PixiJS, and CreateJS for modern, high-performance browser games and interactive web experiences. โœ“ Backend Solutions: I can integrate APIs, databases, and cloud services for online features and scalability. โœ“ Clean Code & Architecture: I follow SOLID principles, modular design, and maintainable architecture to ensure code thatโ€™s efficient, scalable, and easy to extend, saving you time and costs in the long run. โœ“ Art, Animation & Audio Integration: I collaborate with artists, animators, and sound designers to ensure every visual and sound enhances player immersion. โœ“ Testing & Optimization: I prioritize performance, stability, and smooth gameplay across all target devices. I deliver projects on time, within budget, and with clear communication throughout development. Every project is an opportunity to build something memorable together, something that players will love and youโ€™ll be proud to publish. ๐Ÿš€ Ready to bring your game to life? Letโ€™s talk about your project and how we can make it stand out.

  • Game Development
  • Unity
  • C#
  • JavaScript
  • Phaser
  • HTML5
  • Mobile Game
  • Babylon.js
  • WebGL
  • TypeScript
  • Godot
  • Unreal Engine
  • Three.js
  • Multiplayer
  • PixiJS
Vadim P.

Barcelona, Spain

$45/hr
5.0
22 jobs

Need someone who can build, stabilize and scale your Android product? You just found him ๐Ÿค ๐Ÿ“Š 12+ years in mobile delivery ๐Ÿ“Š 20+ Android-focused projects ๐Ÿ“Š 10+ years supporting regulated and business-critical products ๐Ÿ“Š Experience with compliance-ready apps, secure payments, backend-heavy systems and Software Development I help companies create secure, maintainable, high-performance apps for Healthcare, FinTech and consumer products. Core Expertise ๐Ÿ”น Native Android engineering with modern architecture and Software Design ๐Ÿ”น Kotlin-first development with maintainability in mind ๐Ÿ”น Legacy modernization from Java to Kotlin ๐Ÿ”น Secure integrations, performance tuning, release stability ๐Ÿ”น Product delivery for Healthcare, FinTech, consumer platforms and Mobile App Development Iโ€™m an android developer focused on products where reliability and clean architecture matter. As a kotlin developer, I build scalable solutions with android kotlin best practices, Jetpack tooling and AOSP awareness. Clients come to me for android developer kotlin expertise when they need stability, lower technical debt and growth. I work as an android app developer on products that need more than interface implementation. I support teams with android app development for secure solutions where every android app stays maintainable after launch. My background: improving an android application used by thousands of users, integrating backend systems, payment flows, and healthcare-grade data handling. That is why companies hire me as an android mobile developer ( android mobile app developer ) when they need delivery. What I Do Best โœ… Android development using Kotlin and Java โœ… Architecture design with MVVM, Clean Architecture, modularization โœ… Backend communication, authentication and payment integrations โœ… Performance optimization, debugging, maintenance and release support โœ… Application Improvement for live mobile products โœ… Solo delivery or collaboration inside a larger team My strongest specialization is android developer kotlin work. I often join teams that need android developer kotlin java skills to modernize legacy code, migrate modules, and improve release quality without a full rewrite. That work benefits from practical experience as a java developer and from thinking like an android kotlin developer who can handle new features and stabilization. Relevant Experience Highlights ๐Ÿ”ธ Healthcare mobile applications with compliance-aware architecture ๐Ÿ”ธ Performance optimization and crash-rate reduction ๐Ÿ”ธ Secure data handling and app stability improvements ๐Ÿ”ธ Secure apps with payment integration and transaction-safe flows ๐Ÿ”ธ Backend integrations with PHP, Python, JavaScript, and REST APIs ๐Ÿ”ธ Collaboration with iOS, backend, QA, and web teams ๐Ÿ”ธ Ability to scale from one engineer to a delivery team I also have experience with android ble and android bluetooth features for pairing flows and reliable data exchange. Whether I contribute to an android mobile app or support an existing codebase as a mobile developer, I focus on release readiness. Tech Stack ๐Ÿ”ธ Android kotlin with Jetpack, Compose, Android SDK, AOSP ๐Ÿ”ธ Java, Firebase, secure cloud services, CI/CD ๐Ÿ”ธ REST APIs, secure auth, payment gateways ๐Ÿ”ธ Node.js, JavaScript, C#, SQL for backend alignment ๐Ÿ”ธ Git, Android Studio, release workflows, crash analysis ๐Ÿ”ธ MVVM, Clean Architecture, modular apps, scalability-first mindset My work is rooted in native Android, but I also understand broader product ecosystems. I collaborate effectively as an ios developer ( ios app developer ) when cross-platform alignment matters, including iOS Development discussions with teams using Swift. I have worked alongside teams using react native and reviewed delivery implications where flutter developer was involved, though I do not present those as my core specialization. That exposure helps me operate as an android developer and product-minded mobile app developer within cross-functional teams. Team & Product Collaboration ๐Ÿ”น Coordination with a rest api developer ๐Ÿ”น Alignment with web application development ๐Ÿ”น Communication with a web developer or front end developer ๐Ÿ”น Familiarity with database builder, django, and python automation Support I Can Provide โœ”๏ธ Build a mobile app from scratch โœ”๏ธ Join an existing product as an app developer android โœ”๏ธ Refactor legacy code and modernize architecture โœ”๏ธ fix android application bugs and improve release readiness I do not position myself as a wordpress, magento, game developer or unreal engine specialist and I do not use unrelated positioning such as android developer india. Even when someone types android develoer, they usually need a senior specialist who can take ownership. I built mobile applications for autism-related projects with intuitive user experience. ๐Ÿ“ฌ If you need an android developer who can improve an existing product, build a reliable solution from scratch or support growth with kotlin developer depth, send me a message.

  • Android
  • AOSP
  • Kotlin
  • Mobile App Development
  • Flutter
  • Node.js
  • Android App Development
  • Swift
  • Firebase
  • iOS Development
  • PHP
  • Java
  • JavaScript
  • React Native
  • C#
  • SQL
  • Software Design
  • Application Improvement
  • Software Development
  • Software Debugging
Glenn B.

Durango, Spain

$50/hr
5.0
138 jobs

๐ŸŽฎ 20+ years of delivering engaging, interactive digital experiences โ€” on time and on point. I help brands, educators, and innovators turn ideas into polished games, animations, and videos that actually work โ€” whether youโ€™re looking to train, teach, or just entertain. โœ… What I deliver: โ€ข Animation: 2D/3D character animation, motion graphics, explainer videos, visual effects โ€ข Generative AI for image, video, animation and audio โ€ข Video Production: Promotional videos, long-form content, documentary-style edits โ€ข Game Development: Casual games, mobile/desktop games, prototypes, educational & serious games using Unity โ€ข Gamified Learning: Interactive content for training, education, health & safety, proof of concept. โ€ข VR / 360ยฐ Media: Immersive simulations and virtual experiences โ€ข Full Production Support: From concept & scripting to final delivery ๐ŸŽฏ I specialize in combining storytelling, interactivity, and visual flair โ€” with technical know-how to match. Whether itโ€™s an explainer with charm, a game with purpose, or an experience that sticks, I help you make it happen. ๐Ÿ›  Tools I Use: โ€ข Unity, Moho Pro, Lightwave 3D, Final Cut Pro X, Motion, and AI-assisted workflows (image/video) for top-tier efficiency and originality. ๐Ÿ’ฌ Why clients hire (and rehire) me: โ€ข Clear, friendly communication โ€ข Rock-solid reliability and delivery โ€ข Creativity and solutions

  • Game Development
  • Unity
  • Gamification
  • Final Cut Pro
  • 2D Animation
  • 3D Animation
  • Illustration
  • Moho
  • Motion Graphics
  • Vector Art
  • Animated Cartoon
  • Game Trailer
  • Animation for Kids
  • Video Production
  • Trailer
Javier S.

Madrid, Spain

$100/hr
5.0
19 jobs

I am a Software Engineer with a MS in Computer Science and 20 years of expertise as a programmer and exclusively dedicated to Unreal Engine since 2015. I have perfect understanding of Unreal Engine's core, creating Plugins, modifying the engine, translating blueprints into C++, converting projects from Unity (or any other engine) to Unreal and vice-versa and creating tailored base projects as well as providing my services thorough the full development cycle. I specialize in C++, Blueprints, Online Gaming, Editor Plugins, AI, Physics, Mechanics, Rendering, Materials, Level Design, ArchViz, Film, Television, Broadcast, Live Events, VR, AR, and any tailored product that can be done with Unreal. Everything while using the best Software Engineer methodologies, Game Design Patterns and Practices. Architect of Multiple Metaverses and MMOs. SERVICES: Game Programming Game Design Game Mechanics Full Games Base Projects Online Multiplayer Dedicated Servers MMO and MOBA Metaverse Engine Migration Physics Custom Rendering Performance 3D modeling and animation Training Whether you are starting with a rough concept, already have extensive specifications or a finished project, I will work with you to turn your needs into a reality. I can learn your codebase quickly, fix bugs, refactor messy code, and add new features as needed to, providing maintenance or upgrades on your existing project. I work promptly, designing strong solutions and writing clean and professional code. I can also learn and adapt efficiently to new challenges. Bilingual fluency in both English and Spanish. I am a fast, responsive, honest, fully dedicated, self-motivated, self-taught and reliable person. Your satisfaction is my number one priority. All Services Delivered with: - Game Design and mechanics with the best practices - Development of clean, efficient and customized code - Consult of goals and/or strategy - Customer service and full support; handle customer bug reports or complaints and feedback with the most positive attitude I am looking forward to hearing from you!

  • Game Development
  • Unity
  • C++
  • Mixed Reality
  • NFT
  • Augmented Reality
  • Godot
  • Amazon Web Services
  • Unreal Engine
  • Virtual Reality
  • Metaverse
  • Personal Computer
  • Gaming Console
Jose Miguel G.

Madrid, Spain

$30/hr
4.9
21 jobs

Shipped multiple web games, solo, from concept to production. Built with TypeScript/JavaScript and PixiJS/Phaser.js lean by design, fast to load, zero-lag input. Full cross-device support: keyboard, mouse, and touch, with smart layout adaptation for any screen size or aspect ratio. I own the whole process: mechanics, graphics, animation, effects, deployment.

  • Game Development
  • Game Design
  • TypeScript
  • HTML5
  • JavaScript
  • Mobile UI Design
  • Node.js
  • PixiJS
  • HTML5 Canvas

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