# Grzegorz Łotysz

> Senior Frontend and UI/UX Engineer and Team Leader with 20+ years of experience architecting scalable, enterprise-grade applications and leading frontend, design and performance optimization efforts. Skilled across the React & TypeScript ecosystem, focused on delivering high-quality, maintainable and future-proof solutions.

Experienced in improving developer experience through custom tooling and thorough documentation, while upholding strong code quality and accessibility. Proven track record in building component libraries, optimizing performance and leading migrations.

Rooted in a design background, combining technical expertise with a keen eye for visual detail.

## Selected work

### Boldare — Full Stack Engineer
Period: now — Q4 2025
Enterprise-grade product offering real-time collaboration with video conferencing, multi-channel chat and file sharing.
Stack: next, nx mono-repo, rsc, vitest, tailwind, java spring, microservices, graphql, apollo, keycloak, i18n, a11y, github actions

### Boldare — Frontend Lead and Engineer
Period: Q4 2025 — Q3 2024
Government platform for companies operating in the labor market, with a focus on performance, scalability and security.
Stack: react, tanstack routing, tanstack query, rest, SSO, feature flags, vite, vitest, msw server, msw worker, custom ui library, gitlab ci

### Boldare — Frontend Lead and Engineer
Period: Q3 2024 — Q3 2023
Library of React components. Stateless UI primitives and complex, backend-driven organisms. Used by several teams and published as an npm package on a private registry.
Stack: react, storybook, rollup, tanstack query, custom 2FA, rest, vite, vitest, msw server, msw worker, material-ui, gitlab ci

### Boldare — Frontend Engineer
Period: Q2 2023 — Q1 2023
Government platform migration from Vue to React on the frontend and from PHP to Java Spring on the backend.
Stack: vue, react, rest, i18n, rtl, custom ui library, gitlab ci

### Boldare — Product Designer and Frontend Engineer
Period: Q4 2022 — Q1 2022
Global platform for companies providing installation and maintenance operations in the solar energy market.
Stack: react, node, graphql, i18n, figma, design system, github ci

### Boldare — Product Designer and Frontend Engineer
Period: Q1 2022 — Q2 2021
Global platform for measurement, planning and transportation management in the mineral resources market.
Stack: react, styled components, storybook, hateoas, i18n, balsamiq, design system, gitlab ci

### Boldare — Product Designer and Frontend Engineer
Period: Q2 2021 — Q1 2021
MVP-grade platform for data visualization and analysis.
Stack: react, material-ui, design system, figma, github ci

### Boldare — Product Designer and Frontend Engineer
Period: Q1 2021 — Q1 2021
MVP-grade platform for an innovative business model in the real estate market.
Stack: react, material-ui, design system, figma, github ci

### Boldare — Product Designer and Frontend Engineer
Period: Q4 2020 — Q2 2019
Platform for managing mass communication through SMS, email and voice campaigns.
Stack: angular, rest, docker, rtl, sketch, design system, gitlab ci

### Softwaremill — Product Designer
Period: Q2 2019 — Q1 2019
Corporate website for one of the largest software houses in Poland.
Stack: adobe xd, design system

### Juice — Product Designer
Period: Q2 2019 — Q1 2019
Corporate website for one of the most awarded post-production companies in Europe.
Stack: sketch, design system

## Past experience

### The Codeine — Co-Founder and Creative Director
Period: Q2 2019 — Q1 2013
Founding and running a design and creative coding company.

### iizt — Polish Division Manager and Art Director
Period: Q1 2013 — Q1 2010
Running the Polish division of iizt, a creative company based in the Netherlands.

### Freelance — Product Designer and Frontend Engineer
Period: Q1 2010 — Q3 2002
Delivering design and frontend work for national and global companies and institutions, including KLM, G-STAR, DEPT, Playboy, NiNA and Adidas.

## Links
- [Home](https://lotysz.com): interactive Three.js landing page
- [Resume](https://lotysz.com/bio): the same work history as HTML
- [LinkedIn](https://www.linkedin.com/in/%C5%82otysz/)