Work
Professional portfolio showcasing backend engineering projects, system architecture, and technical leadership in building scalable web applications.
Mozilla Corporation
VisitSpent a decade building tools for Firefox developers, focusing on browser development infrastructure, debugging tools, and systems that empower the Firefox engineering team to create better browser experiences.
JSFiddle
VisitCo-founder of the world-changing online IDE that revolutionized how developers share and test code. JSFiddle became the second most popular online IDE globally, serving millions of users and transforming collaborative web development.

Fam-Roots
VisitCo-founder of innovative tools for psychotherapists, focusing on creating personal healing tales that help clients explore and process their experiences through narrative therapy techniques.

nod.consulting
VisitMy independent consulting practice helping organizations with collaborative software development, modern engineering practices, and technical transformation. Specializing in mob programming, testing methodologies, and team dynamics.
Simplito - DeepFellow
VisitContributing to DeepFellow, a private AI framework that enables organizations to deploy AI solutions within their own infrastructure. Focused on maintaining data sovereignty while providing powerful AI capabilities.
Peach Payments
VisitWorked with South African fintech leader building payment infrastructure and financial services. Contributed to systems handling high-volume transactions and payment processing across African markets.

dożynki.pl
VisitFounder of a local village festival portal connecting communities across Poland. A digital platform celebrating traditional harvest festivals and helping preserve rural cultural heritage through technology.
Let's Work Together
Interested in collaborating on backend systems, system architecture, or technical leadership? I'm always open to discussing interesting projects and opportunities.