Description

16+ years as a software engineer, grown from frontend dev to full-stack product builder with a strong product mindset and technical leadership experience. I've led teams, mentored developers, and delivered complex projects end-to-end. I work best in environments where the problems are hard, the engineering culture is serious, and there's room to lead as much as to build.

Languages

English
Fluent
Polish
Native or bilingual
German
Conversational

Workplace preferences

Can work on-site

Berlin (up to 10km)

Tectonic Labs
Founding Product Engineer
October 2025 - March 2026 (5 months)
Led end-to-end development of a production-ready, post-quantum ERC-4337 smart contract wallet as both product manager and core engineer, delivering a browser extension for end users and an SDK and CLI for developers.
Typescript React.js Ethereum Product management Tech Lead
ChainSafe Systems
Senior Software Engineer → Technical Team Lead
October 2024 - March 2025 (5 months)
- Open-source maintainer for Web3.js, responsible for expanding the ecosystem, managing the repository, and actively supporting the developer community.
- Developed a Wallet RPC plugin for Web3.js, enabling seamless wallet integration.
- Promoted to Technical Team Lead within two months, where I led the development of React components and developer tooling to improve the developer experience for Circle’s Wallet-as-a-Service product (the issuer of USDC).
Typescript React.js Tech Lead
Avara
Staff Engineer
November 2022 - May 2024 (1 year and 6 months)
Designed and maintained React and Node.js SDKs for Lens Protocol (~4K weekly npm downloads); owned API surface, releases, migration paths across the ecosystem. Ran first-line developer support on Discord and Telegram (500+ questions); routed pain points into API and documentation improvements. Wrote docs and migration guides; built React/React Native prototypes for product exploration.