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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

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!

Hello, nice to meet you! My name is Jan, and I am a professional, skilled, and detail-oriented backend and fullstack developer. I am a very pragmatic, talented, and quick-to-learn developer and partner. I am quick to understand the needs of your business and your technical requirements, and my pride in my work ensures that I always deliver a fantastic product that meets or surpasses your expectations, and that I do it on time. I have both formal experience/education: - MSc in Software Design from the IT University of Copenhagen And practical experience: - Lead backend developer and fullstack developer at Flimmer, a startup in Copenhagen developing a video streaming app for children. (Expo/RN, Convex, 3rd party APIs & integrations) - Web projects: e-commerce, browser game, etc. - Expert Convex developer (and contributor) 🟢 What can I do for you? I can help you build, improve, or launch your mobile or web app wherever it is in process - from early design and architecture through development to deployment and hosting. I work fullstack, backend, and mobile, and can integrate with any third party services and APIs that you are interested in or would suit your project. - MVP development: Having worked in a startup, I am particularly skilled at moving fast to prototype and build MVPs - Changes or amendments to existing systems: I can work alone or with your team of developers to build new features, fix bugs, and take your product further - Performance optimizations and troubleshooting: Through my formal academic background and my experience as a backend engineer I have built strong skills in optimization and performance troubleshooting 🟢 Tools and frameworks Frontend Development - Next.js, React, Expo/React Native - Responsive design that works on all devices Backend & Database Systems - SQL Databases (PostgreSQL etc.) - NoSQL (Convex, MongoDB, Firebase, etc.) - Node.js - High-performance server applications Programming Languages - TypeScript - Frontend and backend, multiple paradigms - Go (Golang) - Backend development - Java Mobile Development - Cross-platform mobile apps with Expo - App Store/Google Play Store deployment and management - Continuous development and integration DevOps & Deployment - Docker containerization - Automated deployment pipelines - Continuous integration and maintenance - Production monitoring and optimization 🟢 Working with me When working with you as my client, I put a great effort into communicating clearly with you to understand your requirements, desires, and wishes. I never enter into an agreement with someone if I don't believe that I can provide a quality solution to their problem. In me, you will find an extremely conscientious and dedicated person who values good communication very highly. At the same time, I am also a very very relaxed, funny, and easy-going person who never gets frustrated or angry :) Thank you very much for reading, I look forward to hearing from you!

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.

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.

I'm a senior software developer with 5+ years of experience, offering premium software services to my clients. I am hyper-responsive, punctual, and available all week during regular business hours. My unique combination of skills facilitates me in suggesting the best solutions for your project that are easy to scale and inexpensive to maintain. My broad frontend expertise blended with cloud computing experience helps me get a comprehensive picture of your project: starting from prototyping your idea to transforming it into a sleek website your users will love. You have the idea; I have the skills to make it happen! Let's get in touch and talk more about it!