Mariusz Wyrozebski
fCTO at OffersOn App Ltd
Based in Poland
Summary
CTO and tech leadership as a Service | Fertility expert on cykliczna.pl | Powerlifter | Ruby on Rails developer
About
AI won’t fix broken delivery pipelines. But the right tech leadership will.
I help SaaS founders who are stuck between growth and chaos.
When releases slow down, bugs multiply, and nobody knows what’s blocking progress, I step in as a Fractional CTO.
With 18+ years in software and over a decade in Ruby on Rails, I’ve built and led teams across Europe and the US.
I focus on fixing product delivery, implementing AI where it adds real value, and setting up engineering processes that scale.
I usually start with a 10-day technical audit: code, delivery, and AI readiness.
It ends with a clear 4-week roadmap and measurable wins – faster releases, cleaner handoffs, less chaos.
I’ve spent years in healthcare tech, building secure systems that handle sensitive data.
So compliance, risk, and trust are part of how I think.
If you’re building a SaaS and want your product and team to move faster and smarter with AI, let’s talk.
Skills
Software Architecture, Cloud & Infrastructure, Platform Modernisation, Engineering Leadership, DevOps, Data & AI
Regions covered
France, United Kingdom, United Arab Emirates, Netherlands, United States, Europe, North America, South America, Ireland, Germany, Canada
Industry experience
SaaS, Healthcare
At a glance
Mariusz brings hands-on experience across Software Architecture, Cloud & Infrastructure, Platform Modernisation, Engineering Leadership, DevOps, Data & AI. Available for engagements across France, United Kingdom, United Arab Emirates, Netherlands, United States, Europe, North America, South America, Ireland, Germany, Canada. Industry experience includes SaaS, Healthcare.
How fractional CTO engagements with Mariusz work
Mariusz works on a fractional basis — typically one to three days a week for an agreed engagement length — so you get senior technical leadership without the cost or commitment of a full-time hire. Engagements commonly include technical due diligence, board reporting, engineering team leadership, technology strategy, architecture reviews, hiring support, and stepping in as interim CTO during a transition.