About

Adam Rudnicki

Lead Frontend EngineerGdańsk, Poland

I've spent a lot of years inside other people's products. A design tool where thousands of people drag layers around. An accounting product halfway from Ember to React. A portal for people filing disability claims.

What they share is not a stack. It's that a lot of teams, and a lot of users, depend on the interface holding up. If the person on the other side might be on a screen reader, accessibility is not a later pass. If three products need the same flow, someone has to own the shared version.

When I'm not doing that, I'm fishing, cooking, or playing guitar.

Career Timeline

Trajector
Disability Benefits
1. Lead Frontend EngineerFeb 2025 - Present
  - Shared module architecture where the same business flows are built once and shipped across multiple products, keeping teams autonomous
  - Secure multi-step form patterns designed for handling sensitive user data at scale
  - Visual regression testing across the shared architecture, so a spacing drift shows up as a screenshot diff instead of a debate
  - Frontend Working Groups as a regular forum for architecture, tooling, and shared conventions across distributed teams
  - Moved the design system from sole ownership to team-contributed: reviewing API designs, coaching contributors, and staying in sync with design so the standard holds without a single owner building every component
2. Senior Frontend EngineerMar 2023 - Feb 2025
  - Co-led a greenfield customer-facing app with complex data views, WCAG accessibility, and mobile-first design
  - Primary maintainer of the design system across multiple products, including the adoption work that is most of the job
  - Led Design System Working Groups bridging engineering and design, turning visual requirements into technical specs
  - Legacy app modernization with automated testing and full refactoring of critical modules
Billy
Accounting Fintech
1. Senior Frontend DeveloperJun 2022 - Apr 2023
  - Enhanced the React-Ember interoperability layer with new features, enabling smoother incremental migration without halting product development
  - Expanded the design system with core reusable components for consistent UI across new React views
  - Mentored a mid-level and junior developer through code reviews, mostly on React architecture
2. Frontend DeveloperFeb 2021 - Jun 2022
  - High-performance Table component with server-side and client-side pagination for large datasets
  - Migrated critical dashboards from legacy views to React, improving responsiveness while keeping business running
UXPin
Design Tooling
1. Frontend DeveloperMar 2016 - Nov 2020
  - 30-40% Layers Panel performance boost through DOM minimization during drag-and-drop and scrolling
  - User-facing UXPin Docs from scratch with Gatsby, including a custom search engine built on Fuse.js
  - Core design system library with 10+ components serving several products and a large engineering team

See my case studies