Twenty years building products at scale — from a Hong Kong gaming studio with 10M+ players to open-source AI developer tools. Now building MCP tooling at Sylphx.
Two UK-based ventures: open-source developer tools, and a software consultancy.
Building open source developer tools, primarily MCP servers and TypeScript libraries.
UK-based web development and software consultancy.
Founded and led all technical development for mobile gaming company achieving 10M+ global downloads.
Developer tools and high-performance libraries I design, ship, and maintain solo — from MCP servers to tiny, benchmarked state libraries, each one fully tested.
Model Context Protocol server for PDF processing with parallel processing support.
Five companies across four eras — from a Hong Kong gaming forum to social and mobile platforms with 10M+ users, now open-source AI tooling.
Founded and led all technical development for mobile gaming company achieving 10M+ global downloads.
Co-Founder & CEO · Hong Kong / Taiwan / China
Co-founded social gaming company that reached 10M+ monthly active users on Facebook.
Two decades of shipped products — mobile games with millions of players, web platforms, developer tools, and open-source libraries. Pick a lane, or browse it all.
54 projects
Multiplayer competitive card game with character progression and arena tournaments
Engaging poker game with multiple game modes and social features
Popular Taiwanese Mahjong game with over 1 million downloads featuring a unique offline gameplay experience with 16-tile Mahjong rules
Modern portfolio website built with Next.js, TypeScript, and Tailwind CSS
The first MMO Mahjong RPG featuring story-driven gameplay and business simulation
Taiwanese Mahjong game with character progression, pets, and multiple game modes
Unique 3D Mahjong world with multiple game modes and character progression
Enhanced Big 2 card game with character skills and multiple game modes
Taiwanese-style Big 2 card game with offline play and achievement system
142 technologies from two decades of shipping — grouped into the domains I actually build in, not a flat list.
Signature stack
The languages I reach for, from typed frontends to systems work.
Interfaces, design systems and the modern rendering layer.
APIs, data, real-time and the cloud they run on.
LLM tooling, the Model Context Protocol, embeddings and applied ML.
Engines, multiplayer and mobile — from a 10M-player studio.
Crypto and DeFi, trading systems, growth and two decades of long tail.
Five principles I keep coming back to — the quiet constraints behind every interface and line of code I ship.
reduce, not restrict
Every element should serve a purpose. If it doesn't contribute to functionality or understanding, it doesn't belong — in interfaces or code.
eliminate confusion
Write code and design interfaces that express their purpose without ambiguity. Comments explain why, not what.
share what you build
Write clean, documented code that others can understand and contribute to. Open source by default where possible.
respect resources
Write performant code that respects both machine and human resources. Use automation and tooling to move faster without cutting corners.
patterns over instances
Look for underlying patterns and build scalable solutions rather than one-off fixes. Good systems evolve with the product.
Hiring, a project for Epiow, an open-source idea, or just a hello — pick the lane that fits and I'll get back to you within a day or two.
I read everything that lands in my inbox. The fastest way to reach me is the lane below — each opens an email with the right context already filled in.
hi@kylet.seTeams and recruiters looking for a hands-on technical founder.
Product and consultancy projects through my studio, Epiow.
Contributing to or building on my MCP and OSS tooling.
Questions, ideas, or a friendly hello from a fellow builder.