Marcin Mrotek
Principal Software Engineer at Marcin Mrotek
Komarów, Lubelskie, Poland
Summary
👤
Senior🎓
Top SchoolMarcin Mrotek is a founder and Principal Software Engineer with 11 years of experience building scalable web and mobile products, specializing in JavaScript/TypeScript, Next.js, Node.js and GraphQL. He has led engineering teams through complex architecture transformations—most notably replatforming hiPets from a monolith to Next.js microfrontends and microservices on AWS—and successfully exited a complementary CRM startup, Petsly, into that product. Comfortable both in startups and larger tech environments, he blends hands-on implementation with stakeholder-driven architecture and product design. He’s launched customer-focused features across mobile and web, integrating services like Twilio and PostgreSQL for real-world pet-care workflows. Beyond leadership, he contributes to QA and test automation in open-source projects, improving reliability across client and server test suites. Based in Poland, he’s on a mission to improve pet wellbeing through performant, maintainable systems.
11 years of coding experience
10 years of employment as a software developer
Engineer's Degree Information Technology, Engineer's Degree Information Technology at Polish-Japanese Academy of Information TechnologyHigh School Information Technology, High School Information Technology at Technikum Elektroniczne im. Wojska Polskiego w BydgoszczyEngineer's Degree Computer Programming, Engineer's Degree Computer Programming at Wyższa Szkoła Gospodarki w Bydgoszczy
English, Polish
Github Skills (14)
testing10
test-automation10
generator10
angular10
javascript9
nodejs8
nodes8
typescript-types7
typescript7
typescripts7
gulp6
webpack5
webpacker5
full-stack5
Programming languages (5)
Github contributions (5)
ericmdantas/generator-ng-fullstack
Jun 2016 - Jun 2016
Client, server or fullstack - it's up to you. ng-fullstack gives you the best of the latest.
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:11 commits, 12 PRs, 34 comments in 7 days
Contributions summary:Marcin primarily focused on fixing and improving test suites for the ng-fullstack generator. Their contributions involved updating acceptance tests across various components like endpoints, directives, factories, and modules. They modified test configurations and adjusted test prompts, ensuring correct behavior across different client frameworks. Their work also addressed issues related to test execution in the server-side components, ensuring all tests run correctly.
serviceworkergulpclient-serverbest-ofvue
Abdizriel/nodejs-microservice-starter
Jul 2016 - Jul 2016
Contributions:2 releases, 47 commits, 26 PRs in 17 days
apiseedlingrestfuldockernodejs
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