Maciej Grabowski is an experienced software engineer with 11 years building front-end and full-stack web products, currently based in Krakow. He has led engineering teams at Automattic and shipped user-facing features for WordPress.com and Jetpack—contributions that include newsletter tooling, subscription UX, and full-stack newsletter analytics. Comfortable across stacks and companies from Revolut to Workday and Ericsson, he combines deep frontend craft with pragmatic backend work and a software-agnostic mindset. He graduated from Trinity College Dublin and has a track record of improving developer workflows, including shipping GitHub SSO and Free Development Hosting for agency users. An active open-source contributor, his work on high-profile repos like Automattic/jetpack and wp-calypso shows attention to UX details (e.g., reusable blocks, padding/margin controls) and API-level integrations. Colleagues describe him as a hands-on technical lead who balances product impact with maintainable engineering.
11 years of coding experience
9 years of employment as a software developer
Bachelor's degree Computer Science, Bachelor's degree Computer Science at Trinity College Dublin
Contributions:322 reviews, 48 commits, 234 PRs in 9 months
Contributions summary:Maciej primarily contributed to the front-end of the WordPress.com project, focusing on enhancements and new features within the Calypso interface. They fixed bugs related to the "Manage Reusable blocks" component, modifying the `iframe-bridge-server.js` file. Furthermore, the user implemented the "Goals Capture Step" screen, integrating functionalities and UI elements related to setting site goals, with modifications made to files in `client/landing/stepper`. These contributions included adding and modifying components, enhancing the user experience, and integrating data-store.
Security, performance, marketing, and design tools — Jetpack is made by WordPress experts to make WP sites safer and faster, and help you grow your traffic.
Role in this project:
Full-stack Developer
Contributions:100 reviews, 48 commits, 50 PRs in 11 months
Contributions summary:Maciej primarily contributed to the Jetpack plugin by modifying and enhancing block functionalities within the WordPress environment. Their work included adding margin and padding tools to Markdown and Contact Info blocks, and correcting style defaults in the Subscribe block. Additionally, the user modified several post-publish panels to be initially closed. Furthermore, the user made multiple changes that involved API endpoints and settings relating to site options and features.
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Maciej Grabowski - Senior Software Engineer at People.ai