Stephan Halarewicz
Software Development Engineer II at Amazon
Cambridge, Massachusetts, United States
Summary
👤
Senior🎓
Top SchoolStephan Halarewicz is a Software Development Engineer II with nine years of experience building reliable Node.js and TypeScript services, currently contributing to Amazon from Cambridge, MA. He champions Test Driven Development and has practical experience architecting scalable systems—most notably as co-creator of GraphQLGate, an open-source GraphQL rate-limiter and developer visualization tool. Stephan blends backend expertise (Express, Redis, NoSQL) with front-end SPA work (React, Material-UI) and CI/CD practices to keep services fast and maintainable. His background directing cross-functional teams and automating large data migrations saved hundreds of development hours during complex enterprise rollouts. Outside of work he shares knowledge publicly, having presented on effective testing with mocks and maintaining a hands-on GitHub portfolio.
9 years of coding experience
4 years of employment as a software developer
Bachelor's Degree, Chemistry, Mathematics, Bachelor's Degree, Chemistry, Mathematics at Boston CollegeHigh School, High School at Saint Ignatius High School
English, Ukrainian, French
Github Skills (19)
limiting10
expressjs10
data-science9
middleware9
pandas9
manipulation9
python9
nodejs9
complexity9
data-analysis9
frame9
data-structures9
graphql8
dataframes8
data-manipulation8
Programming languages (5)
Github contributions (5)
CGRS-labs/donation-tracker
Mar 2022 - Aug 2022
Contributions:21 reviews, 22 PRs, 25 pushes in 4 months
shalarewicz/CS102
Nov 2016 - Nov 2021
Contributions:28 pushes, 3 branches, 1 issue in 5 years 1 month
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