Mateusz Nieckarz

Product designer working from early ideas to shipped products. Based in Poland, working remotely. Proud dad to a little girl and an enthusiastic participant in far too many sports.

About

I’ve spent the past 12+ years designing digital products across startups, scale-ups and large organizations.

My work sits at the intersection of product thinking, interaction design and visual craft. I like difficult products — complex workflows, ambiguous ideas and systems with lots of moving parts that need to feel obvious to the person using them.

More recently, I’ve focused on AI-native products alongside SaaS, marketplaces and large-scale commerce. I increasingly use tools like Cursor to turn ideas into working product experiences, explore them directly in the interface and stay closer to implementation.

I work best with teams that want a designer who can own a problem end-to-end and care equally about what gets built, how it works and how it feels.

Experience

2025 – Present

Founding Product Designer at Swizzel AI

Shaping the product with the founding team, from early concepts and core workflows through to shipped experiences.

2024 – Present

Senior Product Designer at Sharetribe

Designing core marketplace experiences and evolving the design system across Sharetribe’s platform, working closely with product and engineering.

2024 – Present

Senior Product Designer at Giant Eagle

Designing and improving digital grocery experiences across Giant Eagle’s mobile apps and web, from product exploration through shipped features.

2020 – 2024

Senior Product Designer at Hatched Labs

Designed digital products across iOS, Android and web for clients, spanning research, UX, interaction and visual design.

2018 – 2020

Product Designer at Netguru

Designed digital products for international clients, working across UX, UI, prototyping and product discovery with multidisciplinary teams.

2017 – 2018

Brand Designer at SBCO

Created brand identities and marketing materials across print and digital for a range of clients.

2016 – 2017

Brand Designer at Adino

Designed visual identities, campaigns and marketing materials across print and digital.

Selected work

View more on X

Let’s connect

I’m always happy to talk about interesting products, ambitious ideas or potential collaborations. Reach me at mateusz@studiomatt.co or Telegram, or find me on LinkedIn and X (Twitter).