Kacper Daniel

About me

Senior full-stack engineer with 5 years of production experience building everything from polished marketing and e-commerce websites to complex web applications, desktop software and distributed systems.

My core stack includes TypeScript, React, Node.js and Rust, with experience across frontend architecture, backend systems, infrastructure and performance optimisation. I’ve worked on projects ranging from VR-to-Web conversions requiring heavy JavaScript performance work, to algorithm-heavy fintech platforms and real-time applications with offline support.

I currently lead engineering work at a US startup, working with Rust-based technologies and Cosmos SDK infrastructure. My work includes operating validator nodes and investigating complex blockchain failures such as IBC callback vulnerabilities and double-mint scenarios.

Previously, I spent three years at Rocketmakers, a Queen’s Award-winning UK software agency, delivering products for startups and established organisations.