# Mariusz Cieśla

> Product Designer & Design Engineer based in Berlin. Designs sharp interfaces, validates them in code, and ships measurable product improvements.

- [Home](https://mariusz.cc/): Portfolio overview and introduction
- [Resume](https://mariusz.cc/resume): Full professional background, skills, and experience

## Case Studies

- [LILT Design System — Scaling product velocity](https://mariusz.cc/work/lilt-design-system): Turned a scattered UI into a shared product engine; near-zero regressions, 50% faster onboarding, 3× feature velocity through design-system governance.
- [LILT Assist — Simplifying AI localization for non-experts](https://mariusz.cc/work/lilt-agent): Designed and prototyped an agent interface that makes enterprise translation usable for people who do not speak localization. Password-protected — contact for access.
- [Lifetramp — Scaling a mission-driven platform](https://mariusz.cc/work/lifetramp): Co-founded a career-test-drive marketplace; owned strategy, UX, brand, growth, and partnerships through to Forbes and Fast Company coverage and a 2-season TV documentary.
- [LILT Context Database — Context layer for AI and human localization](https://mariusz.cc/work/lilt-context-database): Designed a graph-based context layer that gave translators and automated workflows cleaner brand knowledge without manual TMX maintenance. Password-protected — contact for access.
- [Insurance Agent Dashboard — Enabling agents with market data](https://mariusz.cc/work/insurance-agent-dashboard): Designed a dashboard helping freelance insurance agents find their best customers, test sales plays, and read the market faster.

## Optional

- [Friends](https://mariusz.cc/friends): Designers and engineers Mariusz recommends when unavailable.
- [Inspiration](https://mariusz.cc/inspiration): Visual references saved from Cosmos, Pinterest, and Tumblr.

## Contact

- Email: work@mariusz.cc
- GitHub: https://github.com/mariusz
- Twitter/X: https://x.com/dotmariusz