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Joy Kirii

@joykirii

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Frontend developer specializing in responsive web and game UIs using React, Next.js, Phaser.js.

United Kingdom

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What I'm looking for

I seek frontend or game development roles where I can build responsive UIs, contribute to product quality, work cross-functionally, and grow with a collaborative, user-focused team.

I am a frontend developer with 2+ years' experience building responsive web and browser-based game interfaces, complemented by QA and AI model training work. I focus on creating engaging user experiences using Next.js, React, Angular, TypeScript and Phaser.js.

At Usiku Games I built and maintained the frontend for a rhythm game, implemented gameplay levels and a custom audio visualizer, and accelerated UI delivery to shorten release cycles. My work received positive player feedback for improved engagement.

As a freelance AI coding trainer I refined prompts, evaluated model responses, and simulated developer workflows for generative models working with JavaScript, TypeScript, React and Next.js, consistently earning a 4.5/5 quality rating. Previously I served as Electronic Arts’ first Swahili localization tester, producing detailed bug reports and test coverage.

I hold an MSc in Software Development and have a background in full-stack training and collaborative frontend projects. I bring strong problem-solving, attention to detail, and cross-functional communication skills to deliver reliable, user-focused products.