I'm a Staff Product Designer specializing in B2B SaaS. I lead strategic product initiatives from discovery to delivery - aligning user needs with business goals and turning complex problems into measurable outcomes.
My sweet spot is designing systems and workflows that scale (growth, engagement, retention), partnering closely with product and engineering to ship high-quality work fast.
I design end-to-end journeys for complex products - from activation to everyday workflows - with a focus on clarity, usability, and business impact.
I build and scale design systems that reduce design debt, speed up delivery, and keep UI quality consistent across teams and platforms.
I prototype quickly to de-risk decisions - validating concepts with users early, then iterating toward shippable, engineer-friendly solutions.
I use low-code tools (like Webflow/Framer) to ship real prototypes, test assumptions, and accelerate go-to-market for new ideas.
I combine qualitative insights with product data (funnels, cohorts, experiments) to prioritize work and measure whether it actually moved the needle.
I align product, engineering, and go-to-market around crisp problem framing, decision-making, and execution - especially in fast-moving teams.
Marcin is a fantastic product designer to work with! We worked together on building a new initiative at Codility, and his contributions were absolutely essential. He can think strategically about the big picture while also diving deep into craft with exceptional attention to detail.
Marcin's impact on our product was immense. Despite growing complexity, he kept the interface simple and maintained an intuitive user experience. He's patient with design feedback and consistently brings strong user insights into his decisions.
Marcin is an asset to any design team, easy going but firm, his work is very well considered and thorough. It's been great to work with Marcin developing our Learning Management System, his strengths are both User Experience focused and in the detail of User Interface.
Marcin is an incredibly meticulous and talented Senior Product Designer. His attention to detail coupled with his ability to transform user feedback into customer-centric UX/UI designs elevated our product to a high standard. He's also a great collaborator and a wonderful person to work with.
His professional mindset in combination with his exceptional skills, attention to details and uncompromising quality proved to be key asset on important projects. Marcin is very focused individual who definitely gets the job done and often with exceeding expectations.
He has that drive and passion that I've rarely seen. He's always going in the extra 10 miles and every details is always important to him. He used to go out of his way to collaborate with other team members (including me) to fix things that would have otherwise gone under the radar. His specs were always detailed and precise.
Marcin is a highly skilled product designer with a strong focus on the end user and a great eye for detail. His passion for UI and UX made him the best product designer we had at Perdoo.
I worked closely with Marcin for over a year at Perdoo, where he consistently demonstrated exceptional product design skills. He always takes an iterative, customer-centric approach to his designs. Gathering user feedback, conducting usability tests, and continuously refining designs to ensure a delightful User Experience.
I use design systems, research, analytics, and delivery tools to move from insight to impact. Each group supports a specific part of the workflow - from early exploration to measurable outcomes.
Figma
Framer
I use design systems and interactive prototypes to explore, validate, and communicate complex ideas quickly.
Maze
Pendo
I validate usability and intent early, then observe real behavior in production to guide iteration.
Mixpanel
PostHog
I rely on product data to measure impact, identify friction, and support design decisions with evidence.
Linear
FigJam
Cursor
I work inside product delivery workflows and use AI-assisted tools to accelerate prototyping, reduce handoff friction, and shorten feedback loops.
