I help brands and agencies create HTML5 banner ads that pass Google Ads, Amazon DSP, and other ad platform requirements without issues. 15+ years of experience in animation and banner development. I deliver clean, optimized, and production-ready files — no rejections, no surprises. Platforms I’ve worked with: ✔ Google Ads (HTML5) ✔ Amazon DSP ✔ IAB standards ✔ Adform, Sizmek, DoubleClick (GWD) ✔ Custom ad networks and rich media platforms What I can do: ✔ HTML5 banner ads (all standard sizes) ✔ Interactive creatives (clickable elements, mini-games) ✔ Adobe Animate (CreateJS) and GSAP animations ✔ Flash/SWF to HTML5 conversion ✔ Fixing, optimizing, or rebuilding existing banners Why clients choose me: • I understand platform limitations, specs, and approval rules • Smooth, lightweight animations with size limits in mind • Fast turnaround and clear communication • Reliable results — ready to upload and launch If you need banners that actually work across different ad platforms — I can help.

I'm one of the top social multiplayer game developers on Upwork. I only work with serious employers who are looking to make professional grade projects. If this is you, please get in touch with me and I'll provide you a list of my full portfolio for your review.

Passionate about coding and problem solving, possessing over 10 years of experience & proven success in Technical Support and Customer Service, with a strong ability to deliver efficient user focused solutions. Alongside extensive experience in AIR/Flex apps development and its different frameworks which allow me to produce cross platforms applications. I also have worked with several APIs & ANEs. I also have a good experience in FFmpeg which is the magic to edit and manipulate media files. I have a good experience and practices with timeline animation and tweens with Adobe Animate / Flash also some good practices with frame by frame animation and export it as swf or HTML5 canvas. I have gained this experience during the past 9 years since I had made and participated in several Adobe Air projects mostly were games, puzzles, educational, images & video processing and some utilities apps.

As a software developer since 2005, I've worked across various professional fields, including: • E-commerce and AI API integrations • Multimedia, rich user interfaces and game development • Web development: frontend, backend and middleware • Databases and CRM solutions • Accounting and real estate industry solutions • Interactive mapping, navigation and weather services

Online game developer with over 15 years of experience. I specialize in HTML5/JavaScript/Phaser Games. I've developed around 60 games over my career and worked for clients such as Paramount Pictures and Dreamworks. I also created many educational games, ranging from word games, typing games, geography games, maths games. My latest games are hosted on my website, Eidosk.com.

Enthusiastic software developer. I have started programming since 2003 while I had been studying at school. Since that time programming become my lovely work. My Skills: – Swift, Objective-C, JavaScript, C/C++, Ruby, Java, Python, PHP, ActionScript – iOS, visionOS, watchOS, tvOS, macOS, Android, Node.js, Ruby on Rails – SwiftUI, UIKit, Storyboards, Xib, SnapKit, AVFoundation – Game Development: Unity (Unity3d), Cocos2d, SpriteKit, Metal – AR - Augmented Reality: ARKit, ARCore, RoomPlan, SceneKit – Xcode, AppCode, IntelliJ IDEA, Android Studio – AI tools / agents: Claude Code, Codex, Cursor – Git, Mercurial, SVN – Github, Bitbucket, Gitlab – CocoaPods, Carthage, Swift Package Manager – Fastlane, SwiftLint – TDD/BDD: XCTest, Quick, Nimble, Unit tests, UI tests – SwiftData, CoreData, Realm, SQLite, MySQL – Swift Concurrency (Async/Await, Tasks, Actors), Combine – Clean Architecture, MVVM, FRP, RxSwift – Firebase (Firestore, Realtime Database, Authentication, Functions, Storage, Remote Config, Analytics), Supabase, AWS – API integration: Facebook, Twitter, Instagram, Venmo, Coinbase, Google Maps and many other

I am a freelance game programmer specializing in multiplayer integration and online systems for games and interactive applications using Unity and Unreal Engine. I help studios and indie teams design, implement, and ship reliable multiplayer features — including real-time networking, backend integration, and third-party SDKs — so their games are production-ready and scalable. My background includes both client-side and server-side development, and I am comfortable working across gameplay systems, networking layers, and backend services. CORE SPECIALIZATION • Multiplayer and online feature integration (real-time and session-based) • Client / server architecture for games • Backend and service integration • Third-party SDK integration (platforms, analytics, services, multiplayer frameworks) • Networked gameplay systems • Front-end and back-end development for games and interactive applications TOOLS & TECHNOLOGIES • Unity (C#) • Unreal Engine (C++) • JavaScript, Python, Java • Web APIs and backend services I have professional experience working with remote teams and clients, maintaining clear communication, managing milestones, and delivering features on schedule. I am comfortable joining existing projects, working with established codebases, and integrating into active production pipelines. EXPERIENCE 10+ years of professional and independent game programming experience I have been programming and developing games since my early teens, starting with ActionScript and Flash and later working with multiple engines and toolchains before focusing on modern game engines and online systems. Over the years, I have worked on gameplay systems, UI and tools, asset pipelines, networked gameplay features, and backend/service integrations. 10+ years of Unity and C# development I have extensive experience building and maintaining Unity projects for both client and independent work, including gameplay architecture, UI and animation systems, asset and package workflows, multiplayer feature integration, and performance/debugging across platforms. Unreal Engine and C++ development In addition to Unity, I have professional experience working in Unreal Engine using C++, including gameplay systems, multiplayer and networking features, and third-party SDK integration. Indie studio founder – Meier House Software (formerly Groovy Video Games) In 2014, I founded my own independent game studio and have released six completed games for web and mobile platforms. In 2024, I rebranded the studio as Meier House Software to better reflect my professional freelance work and recent projects. Running my own studio has given me hands-on experience shipping complete products, managing production schedules, maintaining live projects, and collaborating with remote developers and partners.

🎮 Senior Game Developer | 10+ years in 2D/3D HTML5 games (Phaser, Three.js, Node.js) I develop browser games of any scale and style — from polished casual titles to real-time PvP and blockchain-based games. Do you need a good quality game? I can make it. 🧩 My specialties include: ✓ Browser games (HTML5 Canvas/WebGL — 2D & 3D) ✓ Telegram Mini App games ✓ Multiplayer PvP games with client-server architecture (Node.js + WebSocket) ✓ Game porting: Flash/Unity to HTML5 ✓ Performance optimization for web and mobile ✓ Game design: I can independently design gameplay systems and balance mechanics I can make games of various genres: action, physics puzzles, runners, skill-based games, match-3, educational games for kids. 🛠️ Core Skills: ✓ Platforms: Web (HTML5 2D/3D), Android, iOS, PC ✓ Game engines: Phaser (2D), Three.js (3D), Unity 3D ✓ Languages: TypeScript, JavaScript, C#, AS3 (Flash) ✓ Backend: Node.js (for PvP and multiplayer game logic) ✓ Tools & Tech: WebSocket, WebGL, Vue.js, Vite, Git, Spine, Adobe Animate Game development is my passion — let's build something great together! 📩 Let’s talk! I’m open to long-term partnerships and interesting game projects.

Having a game idea is the easier part, but being able to turn that idea into a game is the tougher challenge. You have the idea and design for your game ready, as well as your graphics and sounds effects, but the final missing piece of your game is to bring all of these together with coding. Hello, I'm a freelance game programmer with 10+ years of game programming experience, specializing in development of 2D, single-player, web browser games. I can help you build your game, starting from its inception, through the development cycles including an minimum viable product (MVP) or prototype, and finally to deploying a finished, polished product on your website. ** How I can Help You ** That missing piece is my specialty. With your design details and media, I write the code to combine it all into a fully-functioning game. ** Game genres ** I code 2D single-player, HTML5 game genres including, but not limited to: ⭐ Platformers ⭐ Side / Top-down scrollers ⭐ Action / Arcade / Shooters / Adventure / Maze ⭐ Puzzles / Blocks / Music / Educational ⭐ Cards ** Tech stack ** ⭐ Phaser 3 ⭐ Typescript / JavaScript ⭐ Node + npm ⭐ Vite / Webpack ⭐ Adobe Animate / CreateJS ** Other services: ** ⭐ Converting an existing 2D single-player Flash game to HTML5 Canvas, using Adobe Animate ⭐ Native Android app creation supported using Capacitor by Ionic, and Android Studio. ** Also, I should point out services I don't offer: ** * Game design * Graphics / art * Website design / development * Blockchain / Metaverse / NFT / Crypto * Gamification / Apps that are not games ** Why Hire Me? ** For starters, a game programmer/coder can be invaluable to you if: * Coding has always felt like rocket science to you; or * You can code, but don't have the time, due to addressing larger-scale challenges in your business Coders take on the burden of figuring out how your game should work under the hood. So you can focus on the bigger picture – delivering quality, engaging experiences to your players. ** If we were to work together, here's what we'd do: ** With your design details, graphics, and other assets, I work with you to help you build your game. The more details you can provide, the better, but I can help flesh out missing pieces from what elements your game may need, best practices, and the final deployment onto your website. 1. Press the invite button to invite me to your job. 2. We can use Upwork chat or a phone / video call to communicate further what you're looking for to determine if we're a good fit. 3. We'll discuss all the details, including how the game should function, what assets we'd need, and hosting the game on your website. Perhaps you have (or maybe are!) the designer, you have an artist, and you're looking for a programmer. If so, I'd be interested in learning more about the web game you are building. If this sounds good, press the invite button, and let's find out if we're a good fit for working together to help you create your game. See you on the other side. - Cartrell.

For over 14 years I've worked on a variety of projects, ranging from micro-sites, games, web applications, raising a successful video platform from scratch, to founding my own creative studio. Founder and Director of REESTACK Agency, freelance company, developing games, creatives and apps. COO at TRIA, specilizing in creative development for mobile games market. Including Playable and Video Ads. Discovering new technologies, experimentation and prototyping is my passion.