Rafał Leszczyński
Engineering Manager at Buffer
Greater Poland Voivodeship
Summary
🤩
Rockstar🎓
Top SchoolRafał Leszczyński is an Engineering Manager with 10 years of experience building and leading remote-first teams for SaaS products, currently at Buffer and formerly at Sourcegraph and Auth0. He has bootstrapped and scaled multiple engineering teams—from Cloud and DevOps to Growth and Admin Experience—driving product delivery and operational improvements (including a 3x increase in cloud instances and a 5x reduction in cloud costs). Rafał blends hands-on frontend craftsmanship, including notable open-source contributions to the popular eslint-plugin-ember, with product-focused engineering leadership. He excels at remote, cross-cultural hiring and coaching, maturing agile processes, and aligning roadmaps with executive stakeholders. Unusually for an engineering leader, he holds a Master in Law and co-founded an e-commerce boutique, giving him practical experience in compliance, operations and customer-facing business decisions. Based in Greater Poland, he’s a gamer and outdoor enthusiast who prefers pragmatic, measurable improvements and thrives in distributed teams.
11 years of coding experience
11 years of employment as a software developer
Master, Law, Master, Law at University of WroclawBachelor, Digital Media and Electronic Communication, Bachelor, Digital Media and Electronic Communication at University of Lower Silesia
English, Polish
Github Skills (7)
linting10
guidelines10
javascript10
eslint10
javascripts10
ember-js10
eslint-plugin10
Programming languages (8)
Github contributions (5)
ember-cli/eslint-plugin-ember
Jun 2016 - Sep 2016
An ESLint plugin that provides set of rules for Ember applications based on commonly known good practices.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:33 commits in 3 months
Contributions summary:Rafał primarily contributed to the `eslint-plugin-ember` repository by implementing and extending various ESLint rules for Ember.js applications. Their work involved writing new rules, modifying existing ones, and expanding test suites to cover a wider range of Ember component and controller patterns, including those involving mixins and services. They also refactored helper methods and tests to improve the functionality and maintainability of the codebase.
eslintcommonlygood-practiceslintingjavascript
RafLeszczynski/agencja-tlumaczen
Sep 2015 - Nov 2020
Website for a translation agency build with Express, React and Webpack
Contributions:102 PRs, 114 pushes, 106 branches in 5 years 3 months
reactagencytranslationexpresswebpack
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.