Justin Karsopawiro
Lead Engineer - Full Stack Architect
10+ years architecting scalable web systems with expertise in modern frontend architecture, real-time data visualization, and performance-critical interfaces. From Leeuwarden, Friesland. Building infrastructure that scales to millions of users using React, TypeScript, Rust, and Node.js.
Hey there! 👋
I'm a Lead Engineer with over 10+ years of experience architecting scalable, high-performance web systems. Deep expertise in modern frontend architecture, real-time data visualization, and performance-critical user interfaces.
Currently designing mortgage platform systems at BLINQX while running my own consultancy Webvork. Proven track record designing and owning complex systems end-to-end from component design and state management to production optimization and developer-facing frameworks.
Proficient across the full stack with particular strength in React, TypeScript, Node.js, Rust, and Next.js — building infrastructure that scales to millions of users.
Experience Highlights
Software Engineer
Sept 2024 - PresentDe Nationale Hypotheekbond (BLINQX)
Senior Software Engineer
Dec 2023 - Aug 2024Tradecast
Software Engineer
Sept 2022 - Nov 2023Accell Group
Education
NHL Stenden University
Bachelor of Science (Computer Science)
Sept 2021 - Jan 2022
Friesland College (Firda)
Computer Software Engineering
Sept 2018 - Jan 2021
ROC Friese Poort (Firda)
IT Management
Aug 2013 - Jul 2014
Projects I've Worked On
10+
Years Experience
50+
Projects Delivered
30+
Technologies
20+
Happy Clients