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Past Lives

Today I build for sport. Before that I built for music labels, travel startups and online shops. Four industries, one way of thinking. Each one taught me something I still use.
  1. 2023 to now

    Sport tech

    Founder of Vimo Swim · Total Immersion coach

    My current life. A programmable swim metronome, apps for swimmers and coaches, and AI agents that run the back office.

    See what I build now
  2. 2023 to 2026

    Music tech

    Founder of MusicTech Lab · Co-founder of MusicTech Poland · CTO at Ambistream

    A software company for the music industry. We built royalty analytics, AI content platforms and tools for labels and distributors, and published open source tools for music metadata.

    • Software for labels such as Cherry Red Records, delivered on budget
    • DDEX and C2PA tools that catch metadata errors before a release goes out
    • MCP servers for audio metadata, Bandcamp reports and content provenance
    • SmartFeed Media, AI-curated newsletters that read the music trade press for rights organisations
    • Co-founded MusicTech Poland, a community for music and tech people, and handed it over to the team that runs it today

    What I took with me Data standards are where products break. And MCP servers, which I first built for music data, are now how I connect AI to everything.

    PythonDjangoNuxtClaudeMCPDDEXC2PAAbleton Live
  3. 2015 to 2022

    Product agency

    Founder and CEO of Bravelab

    A software company that built web platforms and MVPs for clients in travel, education, e-commerce and media. Many of them were non-tech founders with a big idea and a small budget.

    • MVPs for startups such as Wundr (travel) and Walkative (education)
    • B2B and B2C e-commerce platforms
    • A transparent company: open finances, profit sharing and 4DX goals

    What I took with me How to turn an idea into a plan and a budget a founder can check, and how to run a team that people want to stay in.

    PythonDjangoVue.jsPostgreSQLReact Native
  4. 2010 to 2015

    Custom software

    Founder of Sizeof

    My first company. Custom IT projects for many clients: admin panels, loyalty systems and online shops.

    • Loyalty systems and admin panels for long-term clients
    • E-commerce built on Python and Django

    What I took with me How to sell, estimate and deliver on my own, and keep clients for years.

    PythonDjangoPostgreSQLLinuxJavaScript
  5. 2006 to 2010

    Loyalty and marketing tech

    Full stack engineer, then team leader at hyperCREW

    Loyalty programmes and online campaigns for big brands, built in Wrocław.

    • Campaigns and loyalty systems for Citroën, Avon, Deutsche Bank and Play
    • Loyalty programmes for Olympus, Danfoss, Lafarge and Osram
    • Led the IT team, hired developers and improved how we delivered

    What I took with me How to ship for big brands on fixed launch dates, when the campaign starts whether the code is ready or not.

    PHPMySQLJavaScriptAJAX

Ask a question

Twenty years, one question away.

Four industries taught me where products break and what to build first. I'm not taking new projects, but I'm open for consultations. Email me one clear question. I reply within two working days.