Professional Summary
Senior Frontend Engineer with 12+ years building scalable, user-centric web applications for product teams at Netflix, Writer, HelloFresh, Zalando and Tourlane. I am primarily a frontend specialist; I can also build the basic Node.js, Express and PostgreSQL CRUD services and backend-for-frontend layers a feature needs, but I am not a distributed-systems backend engineer. I specialise in thoughtful user experience, robust frontend architecture and remote-first, transparent engineering — async workflows, sharp documentation, and no-ego code review.
Work Experience
Senior UI Engineer (Frontend), Netflix
Aug 2023 — Present · Warsaw, Poland (on-site)
- Redesigned and developed internal drive-based workflow tools, improving file upload/download efficiency for thousands of productions, reducing incidents and bugs by 20% and manual steps by 30% through automation.
- Re-architected the backend-for-frontend layer, migrating from Node.js/Express to a Netflix-internal BFF solution and doubling system observability and monitoring capability.
- Built and maintained Node.js services and GraphQL/REST endpoints over relational (PostgreSQL) and internal data stores, owning schema changes, migrations and query performance.
- Developed a video diffing tool that visually surfaces differences between video file versions in media players and timelines, streamlining quality assurance.
- Collaborated cross-functionally with Design, Product and Support to understand user needs and ship impactful improvements.
- Championed clear asynchronous communication, documentation, and no-ego code reviews focused on clarity and shared learning.
Technologies: React, TypeScript, GraphQL, Node.js, Express, PostgreSQL, Jest, Sentry, Jenkins, Git, SRE, AI-First Development
Senior Frontend Engineer, Writer
Dec 2021 — Jul 2022
- Engineered an AI-powered writing assistant for teams: terminology management, writing rules and dynamic style-guide enforcement.
- Designed and implemented a custom Quill-based AI-assisted editor highlighting grammar, clarity and compliance issues in real time.
- Built and maintained the CMS for user and team management, supporting scalable collaboration and admin workflows.
- Extended Node.js/Express API endpoints backing the editor and admin surfaces, including data modelling in PostgreSQL.
Technologies: React, React Hooks, TypeScript, Node.js, Express, PostgreSQL, Lerna, Jest, GitHub Actions
Senior Frontend Engineer, HelloFresh
Dec 2020 — Jan 2022
- Owned delivery of critical updates to the Delivery History feature serving millions of users.
- Consolidated three internal CMS systems, streamlining menu publishing, recipe editing and menu creation.
- Led requirements gathering, user stories, delivery coordination and documentation for multiple high-impact features as Delivery Lead.
- Interviewed frontend candidates and drove async transparency across stakeholders.
Technologies: React, Redux, React Query, TypeScript, Cypress, Testing Library
Senior Frontend Engineer, Tourlane
Jun 2019 — Nov 2020
- Delivered internal productivity tools that cut agent time per customer by 32% and raised customer satisfaction.
- Built MVP frontends for backend teams, accelerating new app launches and integration across Backend, Product and Design.
- Wrote Node.js/Express service and BFF endpoints with PostgreSQL-backed data to unblock frontend delivery.
- Applied TDD throughout and kept cross-functional communication open and explicit.
Technologies: React, JavaScript, Node.js, Express, PostgreSQL, Styled Components, Cypress, TDD, GitHub Actions
Frontend Engineer, Zalando SE
Mar 2016 — May 2019
- Developed an application that streamlined campaign setup for advertising managers, increasing team capacity and contributing to revenue growth.
- Migrated the legacy platform from Angular to React, improving performance and maintainability.
- Mentored junior developers and aligned OKRs with UX, Product Management and leadership.
Technologies: JavaScript, React, Angular, Redux, CSS, Jenkins, Protractor
Frontend Engineer (Remote), Freelance
Feb 2015 — Feb 2016
- Built client-facing web applications end to end, from requirements to delivery.
- Introduced component-driven architecture and end-to-end testing to small product teams.
Technologies: JavaScript, React, Angular, Redux, CSS, E2E Testing