Addis Semagn
Senior Software Engineer at Cash App
Old Toronto, Ontario, Canada
Summary
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Senior🎓
Top SchoolAddis Semagn is a Senior Software Engineer with eight years of experience building backend systems for payment platforms, currently driving Cash App Pay and payments infrastructure at Block. Rooted in a Computer Engineering background from the University of Toronto, he blends full-stack curiosity with production-grade cloud and reliability practices learned across internships at Microsoft, Shopify, and startups. He has a track record of pragmatic impact—shipping merchant APIs, cost-saving AWS deployments, and ELK-based observability that reduced incident solve time. Comfortable across languages and stacks, he repeatedly moves projects from prototype to production while standardizing tooling and developer experience. Known for pairing product-focused problem solving with systems-level rigor, he still enjoys imagining better futures and translating them into clean, scalable code. Outside core work, he’s contributed to campus-scale web services managing thousands of users, showing an early knack for reliable operations at scale.
8 years of coding experience
3 years of employment as a software developer
High School Diploma, High School Diploma at Father Michael Goetz Secondary SchoolBachelor of Applied Science - BASc Computer Engineering, Bachelor of Applied Science - BASc Computer Engineering at University of Toronto
Amharic, English
Github Skills (17)
google-drive-api10
fastify7
google-cloud7
tailwind7
preact-router7
aws6
nextjs6
preact5
postgresql5
react4
prisma4
python3
blockchain3
microservices3
javascript3
Programming languages (4)
Github contributions (5)
addissemagn/dotfiles
Jun 2020 - Sep 2025
Contributions:16 pushes, 1 branch in 5 years 3 months
addissemagn/ECE344-OS
Sep 2019 - Mar 2020
Contributions:29 commits, 2 pushes, 1 branch in 6 months
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