I’m a senior software engineer with 15+ years delivering production software across games, web, mobile, desktop, and interactive 3D/VR. I’m Unity certified, but I’m not limited to Unity. I’ve worked with both startups and established studios (Trailmix Games, Gram Games, Jam City, The Other Guys, Widow Games, Wannabe, The Whitebox), and I also take on freelance projects where I own the delivery end-to-end.
Clients bring me in when they need someone who can take a vague brief and turn it into a working, maintainable product: scoping, architecture, implementation, testing, build and release, and production support. I’m comfortable jumping into an existing codebase, fixing what’s slowing it down, and leaving it in a better state than I found it.
What I can help with:
- Building new features or whole apps from scratch
- Fixing bugs, performance issues, stability problems, and messy architectures
- Integrations: third-party SDKs, payments, backend services, analytics
- Automation and tooling to speed up delivery and reduce manual work
- Game and interactive work (Unity/Unreal/WebGL) when that’s the right fit
Tech and platforms I commonly work with:
- Languages: C#, C++, C, Java, Scala, JavaScript/TypeScript, Python, PHP, HTML/CSS
- Platforms: Android, iOS, Windows, macOS, console, AR/VR, plus hardware projects (Arduino, Raspberry Pi)
How I work: I start by confirming goals and constraints, then propose a plan with clear milestones. I communicate early about risks and trade-offs, and I document key decisions so you can maintain the project after handover.
If you share a brief, I’ll reply with a practical approach, a milestone breakdown, and an estimate.
Unity
C#
Game Design
Game Development
Phaser
JavaScript
Android
iOS
Personal Computer
Mobile Game
In-App Purchases
Prototyping
Mobile App Development
Muhammad M.
London, United Kingdom
$35/hr
4.5
20 jobs
I’m a Senior Unity Developer with 10+ years of experience building scalable mobile, multiplayer,AR, and VR applications.
I specialize in:
• Multiplayer systems (matchmaking, real-time gameplay, backend integration)
• Performance optimization for mobile & WebGL
• Rapid prototyping and production ready builds
• Steam, iOS & Google Play deployment
I’ve delivered 300+ Unity projects ranging from competitive online strategy games to complex simulation systems. My focus is clean architecture, long-term scalability, and high user retention.
Recently, I developed a full 3D multiplayer strategy game (Chess Cubed) in 6 weeks, launching across Steam, Android, and iOS.
If you need a senior Unity engineer who can own systems end to end from architecture to release
I’m ready to help.
Unity
C#
Game Development
Metaverse
AR & VR Applications
Blockchain, NFT & Cryptocurrency
Online Multiplayer
3D Modeling
Animation
Mobile Game Development
Game Art
Online Game Website
WebGL
PC Game
PlayStation VR
Muhammad Hamza R.
London, United Kingdom
$20/hr
4.0
3 jobs
I’m a Senior Unity Game Developer with 10+ years of professional experience, specializing in scalable gameplay systems, Unity tools & SDK development, and deep performance optimization for mobile and cross-platform games.
I’ve worked on globally shipped titles and live products, where reliability, performance, and clean architecture are non-negotiable. My focus is not just “making things work,” but building systems that scale, perform, and are easy to maintain.
🔧 What I help clients with
• Unity Game Development (2D & 3D) – production-ready code, not prototypes
• Custom Unity Tools & SDKs – editor tooling, pipelines, automation
• Performance Optimization – fixing ANRs, crashes, memory & CPU bottlenecks
• Mobile Expertise – Android & iOS compliance, store readiness
• Live Project Support – debugging, refactoring, and stabilizing shipped games
• CI/CD & Workflow Improvements – Jenkins, build automation, team efficiency
🧠 Technical Strengths
• Unity (Advanced C# architecture, SOLID principles)
• Modular systems & reusable frameworks
• Profiling & optimization (mobile-first mindset)
• CI/CD pipelines & development workflows
• Mentoring engineers & technical decision-making
🎮 Selected Work
I’ve contributed to top-chart and high-traffic games, including:
• Hungry Shark World
• Animal Rescue
• Real Drive 3D
These projects required high performance, platform stability, and long-term maintainability, not quick hacks.
🤝 How I work
• Clear, honest communication
• Strong ownership of tasks
• Focus on long-term technical health
• Comfortable collaborating with designers, producers, and engineers
If you’re looking for a senior Unity developer who can handle complex systems, improve performance, and strengthen your codebase, I’d be happy to discuss your project.
Let’s build something solid.
Unity
C#
Game Development
Android
iOS
Video Game
Casual Game
Prototyping
Android Studio
Apple Xcode
GitHub
GitLab
Perforce
Publishing
Jenkins
Santino J.
London, United Kingdom
$20/hr
5.0
5 jobs
🎮 𝑼𝒏𝒊𝒕𝒚 𝑮𝒂𝒎𝒆 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒆𝒓 | 8+ 𝒀𝒆𝒂𝒓𝒔 𝑬𝒙𝒑𝒆𝒓𝒊𝒆𝒏𝒄𝒆
⭐𝑺𝒑𝒆𝒄𝒊𝒂𝒍𝒊𝒛𝒊𝒏𝒈 𝒊𝒏 𝑰𝒎𝒎𝒆𝒓𝒔𝒊𝒗𝒆 𝑮𝒂𝒎𝒆𝒑𝒍𝒂𝒚, 𝑪𝒓𝒐𝒔𝒔-𝑷𝒍𝒂𝒕𝒇𝒐𝒓𝒎 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 & 𝑯𝒊𝒈𝒉-𝑷𝒆𝒓𝒇𝒐𝒓𝒎𝒂𝒏𝒄𝒆 𝑪𝒐𝒅𝒆⭐
🔰I am 𝑺𝒂𝒏𝒕𝒊𝒏𝒐 𝑱𝒊𝒎𝒆𝒏𝒆𝒛 a senior Unity developer with 6+ years of hands-on experience crafting games that are engaging, polished, and performance-optimized from mobile and PC to XR/AR/VR.
Whether you're a startup, studio, or solo creator, I bring technical precision, creative insight, and industry best practices to every project. Let's bring your game idea to life, or scale your current project to the next level.
🔥 𝑾𝒉𝒚 𝒘𝒐𝒓𝒌 𝒘𝒊𝒕𝒉 𝒎𝒆?
✔️ Expert in Unity C# Development
✔️ Cross-platform builds (iOS, Android, WebGL, PC, Console)
✔️ Clean, scalable, and maintainable code
✔️ Rapid prototyping & MVP development
✔️ Smooth and responsive gameplay mechanics
✔️ Team player – Agile/scrum friendly
✔️ Pixel-perfect UI implementation
✔️ Available for long-term or short-term projects
✔️ Same-day communication & quick turnaround
🛠 𝑴𝒚 𝑬𝒙𝒑𝒆𝒓𝒕𝒊𝒔𝒆 𝑰𝒏𝒄𝒍𝒖𝒅𝒆𝒔:
• Unity 2D & 3D Game Development
• AR/VR Apps (Oculus, ARKit, ARCore)
• Game Physics & Animations
• Mobile Optimization & Performance Tuning
• UI/UX Integration (Figma → Unity)
• Multiplayer & Networking (Photon, Mirror)
• Scriptable Objects & Custom Tools
• Backend Integration (Firebase, PlayFab, REST APIs)
• Shader Graph & VFX
• In-App Purchases, Ads, and Analytics
• Level Design Tools & Scene Management
• Game Publishing & Store Deployment
🧰 𝑻𝒆𝒄𝒉 & 𝑻𝒐𝒐𝒍𝒔 𝑰 𝑼𝒔𝒆:
• Unity, C#
• Visual Studio, Rider
• Git, GitHub, GitLab
• Firebase, PlayFab
• Blender, Photoshop (for assets integration)
• Jira, Trello, Slack (team collaboration)
📨 𝑳𝒆𝒕’𝒔 𝑩𝒖𝒊𝒍𝒅 𝑺𝒐𝒎𝒆𝒕𝒉𝒊𝒏𝒈 𝑨𝒘𝒆𝒔𝒐𝒎𝒆
Click the “Invite to Job” button at the top of my profile I’m ready to jump in and get started!
Unity
Game
Mobile Game
Desktop Application
App Development
AR & VR
AR & VR Applications
AR & VR Development
WebGL
UX & UI
Web Development
Product Design
Game Customization
Mobile Game Development
Andrew K.
London, United Kingdom
$65/hr
5.0
7 jobs
Hello!
About me:
- British education and career. (University of Westminster)
- Game developer with 10+ years of experience in the professional industry.
- Have published / live games.
- Passionate for challenging projects and professional at the same time.
- Unity3d is my platform of choice and I have all the skills surrounding it! (full gamedev stack)
Looking forward working together!
Andrew
Unity
Augmented Reality
C#
Mobile Game Development
WebGL
Prototyping
Game Consultation
Game Design Document
Animation
Telegram API
AR & VR
Firebase
Analytics
SDK
Mohammed A.
London, United Kingdom
$15/hr
5.0
2 jobs
𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗪𝗲𝗯 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗖𝗿𝗼𝘀𝘀-𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 | 𝗔𝗜/𝗠𝗟 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘀𝘁
Full stack mobile app developer with 7+ years of experience in Mobile App Development, specializing in iOS, Swift, Android, Kotlin, KMM, Kotlin Mutliplatform / KMP, React Native, and Flutter. I have successfully delivered 120+ mobile applications in different roles as mobile app developer, flutter app developer, flutter full stack developer, flutter flow, mobile app design, mobile ui ux designer, swift ios developer, android developer, kotlin developer, react native developer, mobile game developer achieving a 5-star rating on Upwork and helping clients scale their businesses with high-performance solutions.
Keywords:
“Full stack developer,” “Full stack web developer,” “Full stack engineer,” “Full stack development,” “Full stack programmer,” “Full stack software developer,” “Full stack JavaScript developer,” “MERN stack developer,” “MEAN stack developer,” “LAMP stack developer,” “JAMstack developer,” “Senior full stack developer,” “Remote full stack developer,” “Freelance full stack developer,” “Backend and frontend developer,” “Web application developer,” “SaaS developer,” “API developer,” “Cloud developer,” “Enterprise application developer,”
“Frontend developer,” “Frontend engineer,” “React.js developer,” “React expert,” “React Native developer,” “Angular developer,” “AngularJS expert,” “Vue.js developer,” “Next.js expert,” “Nuxt.js developer,” “Svelte developer,” “JavaScript developer,” “TypeScript developer,” “jQuery developer,” “Bootstrap expert,” “Tailwind CSS developer,” “HTML5 developer,” “CSS3 developer,” “UI developer,” “UX developer,”
“Backend developer,” “Node.js developer,” “Express.js expert,” “Python developer,” “Django developer,” “Flask expert,” “FastAPI developer,” “PHP developer,” “Laravel developer,” “Symfony developer,” “CodeIgniter expert,” “Ruby developer,” “Ruby on Rails developer,” “Java developer,” “Spring Boot expert,” “Kotlin developer,” “C# developer,” “ASP.NET developer,” “.NET Core developer,” “Golang developer,”
“Database developer,” “SQL developer,” “MySQL expert,” “PostgreSQL developer,” “MongoDB developer,” “NoSQL expert,” “Firebase developer,” “DynamoDB expert,” “Oracle database developer,” “Redis developer,” “GraphQL developer,” “Database administrator,” “Data modeling expert,” “Database optimization,” “ETL developer,” “BigQuery expert,” “Snowflake developer,” “Supabase developer,” “CouchDB expert,” “MariaDB developer,”
“Mobile app developer,” “iOS developer,” “Android developer,” “Flutter developer,” “React Native expert,” “Xamarin developer,” “Swift developer,” “Kotlin mobile developer,” “Objective-C developer,” “Cross platform developer,” “Progressive web app developer,” “Hybrid app developer,” “Mobile UI developer,” “Mobile UX expert,” “Mobile backend developer,” “API integration developer,” “Firebase mobile developer,” “App Store deployment,” “Play Store deployment,” “iOS/Android full stack developer,”
“DevOps engineer,” “Cloud engineer,” “AWS developer,” “AWS Lambda expert,” “Azure developer,” “Google Cloud developer,” “Kubernetes expert,” “Docker developer,” “CI/CD expert,” “Jenkins developer,” “Terraform expert,” “Ansible developer,” “Serverless developer,” “Cloud native developer,” “Infrastructure as code,” “Cloud security expert,” “Microservices developer,” “Cloud API developer,” “Amazon EC2 expert,” “AWS RDS developer,”
“E-commerce developer,” “Shopify developer,” “WooCommerce expert,” “Magento developer,” “BigCommerce developer,” “OpenCart expert,” “Prestashop developer,” “Wix developer,” “Squarespace developer,” “WordPress full stack developer,” “Drupal developer,” “Joomla developer,” “CMS developer,” “Custom plugin developer,” “Theme customization expert,” “Headless CMS developer,” “Sanity expert,” “Contentful developer,” “Ghost CMS expert,”
“REST API developer,” “GraphQL API expert,” “API integration developer,” “Payment gateway integration,” “Stripe integration expert,” “PayPal integration developer,” “Braintree integration,” “Twilio developer,” “Zapier expert,” “Webhooks integration,” “Social media API developer,” “Google Maps API developer,” “Firebase integration,” “Third party API developer,” “API automation expert,” “SOAP API developer,” “Custom API developer,” “API security expert,” “Microservices API developer,” “API testing developer,”
“Blockchain developer,” “Web3 developer,” “dApp developer,” “Smart contract developer,” “NFT expert,” “AI developer,” “Machine learning developer,” “Data science expert,” “TensorFlow developer,” “PyTorch developer,” “Chatbot developer,” “OpenAI developer,” “LangChain expert,” “RPA developer,” “IoT developer,” “AR/VR developer,” “Game developer,” “Unity developer,” “Unreal Engine developer,” “Three.js developer,”
⚡️ AVAILABLE FOR NEW PROJECTS
⚠️ Press Invite Button on my page and let's talk
React
MERN Stack
API Development
Full-Stack Development
API Integration
Next.js
Web Application
Web Development
Web API
Back-End Development
Front-End Development
Amazon Web Services
JavaScript
CSS
HTML
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