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Hello, I’m Sergei Sizkov, a Senior Game UI/UX Artist & Illustrator and Technical Game Designer based in Braga, Portugal. I bring 12+ years of experience in full-cycle game development, from Flash to HTML5/Unity, and I specialize in bridging art and code by delivering engine-ready assets and optimized UI systems. I’m proficient in AI-native workflows (GenAI + LLM-assisted coding), which helped deliver 80+ commercial game sets and multiple solo titles. I also maintain a portfolio of 10,000+ vector assets and thrive on large-scale delivery while keeping visuals high-quality.…Hello, I’m Sergei Sizkov, a Senior Game UI/UX Artist & Illustrator and Technical Game Designer based in Braga, Portugal. I bring 12+ years of experience in full-cycle game development, from Flash to HTML5/Unity, and I specialize in bridging art and code by delivering engine-ready assets and optimized UI systems. I’m proficient in AI-native workflows (GenAI + LLM-assisted coding), which helped deliver 80+ commercial game sets and multiple solo titles. I also maintain a portfolio of 10,000+ vector assets and thrive on large-scale delivery while keeping visuals high-quality.

Sergei Sizkov

Game Designer, UI Designer, UX Designer, +3

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Hello, I’m Sergei Sizkov, a Senior Game UI/UX Artist & Illustrator and Technical Game Designer based in Braga, Portugal. I bring 12+ years of experience in full-cycle game development, from Flash to HTML5/Unity, and I specialize in bridging art and code by delivering engine-ready assets and optimized UI systems. I’m proficient in AI-native workflows (GenAI + LLM-assisted coding), which helped deliver 80+ commercial game sets and multiple solo titles. I also maintain a portfolio of 10,000+ vector assets and thrive on large-scale delivery while keeping visuals high-quality.…Hello, I’m Sergei Sizkov, a Senior Game UI/UX Artist & Illustrator and Technical Game Designer based in Braga, Portugal. I bring 12+ years of experience in full-cycle game development, from Flash to HTML5/Unity, and I specialize in bridging art and code by delivering engine-ready assets and optimized UI systems. I’m proficient in AI-native workflows (GenAI + LLM-assisted coding), which helped deliver 80+ commercial game sets and multiple solo titles. I also maintain a portfolio of 10,000+ vector assets and thrive on large-scale delivery while keeping visuals high-quality.

Available to hire

Hello, I’m Sergei Sizkov, a Senior Game UI/UX Artist & Illustrator and Technical Game Designer based in Braga, Portugal. I bring 12+ years of experience in full-cycle game development, from Flash to HTML5/Unity, and I specialize in bridging art and code by delivering engine-ready assets and optimized UI systems.

I’m proficient in AI-native workflows (GenAI + LLM-assisted coding), which helped deliver 80+ commercial game sets and multiple solo titles. I also maintain a portfolio of 10,000+ vector assets and thrive on large-scale delivery while keeping visuals high-quality.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Russian

Fluent

Work Experience

Senior Game UI/UX Artist & Illustrator (Freelance / Self-Employed) at Remote / Freelance

September 1, 2013 - Present

Evolution from top-selling stock illustrator to Game UI Expert. Merged projects for clients like Zygomatic, TradingView (eSignal), and others. Focus areas include Game Art Production (55+ complete graphic sets for casual HTML/Mobile games), Complex UI/UX for fintech apps (data-dense dashboards), and an AI-integrated workflow to speed up concept prototyping.

Indie Game Developer (Flash/ActionScript) at Remote

October 1, 2009 - September 1, 2013

Full-cycle game development during the Flash era. Developed casual web games from scratch, handling Art (Vector graphics, Animation) and Code (ActionScript 3.0). Produced 52 Flash games, managing the entire pipeline from concept to distribution. Gained fundamental experience in game logic, state management, and OOP, informing work with modern game engines.

Senior UI/Web Designer at UpScale Soft

May 1, 2002 - September 1, 2009

Key designer in a software development company. Designed user interfaces for desktop software and corporate websites. Responsible for branding, digital design, and visual identity for various clients. Collaborated closely with developers to ensure accurate implementation of designs.

Senior Game UI/UX Artist & Illustrator at Zygomatic

January 1, 2022 - Present

Leading developer of casual HTML5 and mobile games played by millions worldwide. Delivered 80+ complete engine-ready graphic sets for casual HTML/Mobile games, including UI layouts, characters, environments, and icons. Reduced time-to-market for new game concepts by implementing AI-integrated workflows (Midjourney, generative AI) for rapid prototyping and asset generation. Optimized UI assets for various screen resolutions and devices, ensuring 100% compatibility with mobile and web engines with no sacrifice of visual quality.

Senior UI/UX Designer at TradingView / eSignal

January 1, 2020 - December 31, 2022

Global fintech platform providing advanced charting and trading tools for financial markets. Designed high-fidelity user interfaces for sophisticated fintech applications, balancing high data density with intuitive usability for professional traders. Collaborated with product managers and developers to transform complex data requirements into clear, responsive wireframes and prototypes. Conducted iterative design improvements based on stakeholder feedback, ensuring the final product met rigorous industry standards for clarity and speed.

Senior Stock Illustrator & Digital Artist at Self-Employed

January 1, 2013 - Present

Production of high-quality vector assets for global marketplaces. Created and managed a massive commercial portfolio of 10,000+ vector illustrations, consistently ranking as a top-selling contributor on global stock agencies. Mastered high-speed vector production in CorelDRAW and Adobe Illustrator, enabling rapid scaling of asset libraries without quality loss. Analyzed market trends to produce content for gaming, publishing, and advertising, generating sustained passive revenue.

Indie Game Developer (Full Cycle) at Freelance

January 1, 2009 - January 1, 2013

Developed and shipped 52 Flash games from concept to distribution, handling the entire pipeline: Game Design, Art, Animation, Sound and Code (ActionScript 3.0). Gained fundamental expertise in Game Logic and OOP, enabling effective communication with engineering teams and technical implementation of UI assets.