Hire the Best Firebase Developers
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Struggling with unstable gameplay, poor performance, or developers who can’t deliver a polished, production-ready game? I help studios, startups, and founders build high-performance Unity games with clean architecture, smooth gameplay, and scalable systems that actually ship. I’m a Senior Unity Game Developer and 2D/3D Game Artist with 15+ years of experience in Unity game development, mobile game development, and real-time interactive applications. I’ve worked across mobile, PC, WebGL, VR, and AR projects, delivering stable, optimized, and engaging game experiences. Game Development (Unity 2D/3D): Full-cycle Unity game development from concept to deployment Mobile game development (Android, iOS) with performance optimization PC game development (Windows, Mac, Steam-ready builds) WebGL game development for browser-based experiences AR/VR development using OpenXR, Meta Quest, ARCore, ARKit Clean C# architecture with scalable and maintainable systems Game prototyping for fast idea validation Core Systems & Technical Expertise: Gameplay systems: character controllers, AI systems, state machines Multiplayer game development (Photon, Netcode, Mirror) Backend integration (Firebase, PlayFab, REST APIs) Monetization systems (AdMob, Unity Ads, in-app purchases) Analytics integration (Firebase Analytics, GameAnalytics) Performance optimization using Unity Profiler, memory management, draw call reduction 2D/3D Game Art & Design: 2D/3D asset creation, modeling, texturing, and optimization Game UI/UX design with player-focused interaction flow Animations and real-time VFX for gameplay polish Environment design, level design, and visual storytelling Game Design & Planning: Game Design Documents (GDD) and technical documentation Wireframing, core loop design, and player experience planning Game balancing for engagement and retention Market-focused design for better user acquisition and monetization Why clients choose me: 10+ years of Unity game development experience Strong focus on performance, scalability, and clean code Fast communication and clear project updates Reliable delivery — no overpromising, only results Ability to jump into existing projects, fix issues, and move forward Tech Stack & Tools: Unity 2D/3D, C#, URP/HDRP, Shader Graph Photon, Netcode, Mirror Firebase, PlayFab, REST APIs ARCore, ARKit, OpenXR, Meta Quest Blender, Maya, 3ds Max Git, Agile workflows If you need a Unity developer who understands both the technical and creative side of game development and can turn your idea into a stable, engaging product. let’s connect! Keywords: Unity Game Developer, Unity 3D Developer, Unity 2D Developer, Game Development, Mobile Game Development, iOS Game Developer, Android Game Developer, PC Game Development, WebGL Developer, VR Developer, AR Developer, Multiplayer Game Development, C# Developer, Game Designer, Game UI UX, Real-Time VFX, Unity Optimization, Firebase Integration, PlayFab Developer, Game Prototyping, Indie Game Developer

Portfolio: ali.champtech.dk/ I've been the technical co-founder behind four startups — Emploai, Clozio, StageHub, and DRIVN. That means I've built the full product each time: architecture, frontend, backend, billing, deployment, and everything in between. Most of my work is SaaS platforms and business tools, but I've shipped everything from mobile apps to enterprise systems with multi-tenant setups. 49+ projects delivered through my company ChampTech, most of them still running in production. I work in Next.js, React Native, TypeScript, Python, FastAPI, and PostgreSQL. I use OpenAI and AI integrations when they actually solve a problem, not just to add a buzzword to a landing page. If you need someone who can take your idea and turn it into a real product that works — not a prototype that falls apart when users show up — that's what I do.

10+ years experience in mobile and web full-stack development, I am the Swiss Army Knife of software development. I have expert knowledge in: - React / React-Native / Expo - NextJS / NodeJS - JavaScript / TypeScript - Google Firebase / Google Cloud Platform - MongoDB / PostgreSQL I regularly use the above stack in my day-to-day work, but I am also comfortable adapting to different tools that may be more suitable for a specific task. I am passionate about translating beautiful designs into efficient code to create exceptional user experiences. I am proficient in working across the entire web and mobile stack, focusing on writing testable code that follows the "Don't Repeat Yourself" principle. I also prioritize setting up automated pipelines for repetitive tasks. My approach is pragmatic, and I prefer integrating proven third-party software rather than reinventing solutions. I aim to release quickly and frequently, iterating until the customer is satisfied. I have experience working in diverse teams across various time zones, ranging from startups to large enterprises. I am solution-oriented and known to be the man for the hard and rough jobs. I work efficiently and take pride in delivering high-quality work on time.

Experienced Full-Stack Web Developer | Open to Collaboration As a freelance developer since 2018, I bring expertise across the full software development lifecycle, from initial design to production deployment. Core Competencies: Full-Stack Frameworks Proficient in scalable frameworks for modern web development: Frontend-First Frameworks: - Next.js - NestJS - Nuxt.js - SvelteKit - SolidStart Backend-First Frameworks: - Laravel - Symfony Back-End Development Skilled in building robust and efficient server-side solutions using Python, Go, PHP, and JavaScript. Specialized frameworks include: - Flask - FastAPI - Express.js, Node.js Front-End Development Adaptable to the dynamic JavaScript landscape and experienced with: React, Solid, Svelte, Vue HTMX, jQuery Databases: Deep experience with relational and NoSQL databases: Relational: PostgreSQL, MySQL, MariaDB, SQLite NoSQL: MongoDB, Firestore, DynamoDB While I favor writing raw SQL queries with database drivers, I collaborate effectively in team settings using ORMs like: Drizzle, SQLAlchemy, Prisma, Django ORM Backend-as-a-Service (BaaS) Proficient in implementing BaaS solutions for streamlined deployment: Supabase, PocketBase, Vercel (DB), AWS Amplify, Firebase Development Philosophy Problem Solving: While testing is a personal growth area, I embrace Test-Driven Development (TDD) to ensure high-quality, bug-free code. Adaptability: Continuously upskill in emerging technologies and frameworks. Collaboration Guidelines Upwork Policy Adherence: Communication and payment must remain on Upwork until a contract is established. External communication tools or profile sharing outside Upwork’s platform are not permitted. Platform Exclusivity: I do not work outside the Upwork platform to ensure security and compliance. Let me know if there’s a project we can work on together!

Hi, I’m Christine 👋 I specialize in building AI-powered platforms that combine mobile apps, backend APIs, and marketing websites into one seamless experience. My background bridges technical development with project management, so I don’t just write code – I take projects from idea to launch, ensuring every detail is delivered. ✨ Recent project highlights: ScenePartner App – A full-stack AI rehearsal platform for actors. Built in Flutter (iOS & Android) with Firebase, FastAPI backend, GPT-4/Claude script parsing, ElevenLabs voice generation, and RevenueCat subscription system. SelfTapePartner Website – A responsive marketing site built in Next.js/React with Tailwind, Framer Motion animations, Firebase waitlist integration, and Netlify/Vercel deployment. 💡 What makes me different: I can handle end-to-end development: mobile apps, backend, cloud, and web. Strong AI & automation expertise (GPT-4, Claude, ElevenLabs, Firebase Functions). Experience with subscription apps, multi-language support, and in-app purchases. Clear, proactive communication and structured project management. If you’re looking for someone who can lead, build, and deliver modern digital products with AI and subscription models at the core – let’s talk.

Zain here! I'm a seasoned Full Stack developer with a keen eye for detail and great coding skills. With the use of the most effective Front end tools and approaches, Front End Expertise: ✅ HTML5, CSS3, JavaScript, TypeScript ✅ React, Redux Backend Expertise: ✅ Java, Servlets, JDBC, Hibernate, ✅ Spring Boot, Spring Cloud, Spring JPA ✅ Oracle, MySql, Informix, PostgreSQL, Firebase ✅ GCP (BigQuery, CloudFunctions etc) ✅ SAP commerce cloud(Hybris) certified ✅ Salesforce Datorama(Marketing cloud intelligence) 𝙈𝙮 𝘾𝙤𝙧𝙚 𝙅𝙖𝙫𝙖/𝙎𝙥𝙧𝙞𝙣𝙜 𝘽𝙤𝙤𝙩 𝙀𝙭𝙥𝙚𝙧𝙩𝙞𝙨𝙚: 💥 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: Spring boot, Hibernate, Web Services, Spring MVC, Spring Rest, Spring Gateway, SAP Commerce Cloud etc 💥 𝐃𝐞𝐯𝐎𝐩𝐬: Azure DevOps, CI-CD 💥 𝐃𝐚𝐭𝐚𝐁𝐚𝐬𝐞: SQL Server 2008, MySQL, Oracle 💥 𝐎𝐭𝐡𝐞𝐫 𝐓𝐨𝐨𝐥𝐬 & 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬: SVN, GIT, PostMan 💥 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐌𝐨𝐝𝐮𝐥𝐞𝐬: Spring Security 💥 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: JUnit, Mockito 💥 Maps Integration: Google Map 💥 Third-party Integrations: SendGrid API, Salesforce Marketing Cloud API. 💥 Remarkable working experience with Fintechs 💥 Worked with one of the Europe's biggest clients on Salesforce Datorama. 📞 Let's get connected via a call/chat and discuss your project. Have a project? 𝗧𝗲𝗹𝗹 𝗺𝗲 𝗮𝗯𝗼𝘂𝘁 𝗶𝘁 Upwork Invites are working properly, so I'm eager to get them from you! Cheers, Zain