Porin Ćustić
Freelance Software Engineer at Toptal
Zagreb, Croatia
Summary
👤
Senior🎓
Top SchoolPorin Ćustić is a freelance software engineer from Zagreb with a decade of experience building backend systems and architecting scalable, distributed applications. He specializes in Python-based backends (Flask, Django, FastAPI) and has migrated monoliths to microservices, worked with high-throughput data platforms, and designed backend architectures for healthcare and media products. His work has processed millions of files and billions of records daily and includes a FastAPI project showcased to world leaders, as well as email recommender and AI tooling for a medical education platform. With a Master’s in Mathematics and Computer Science and a long-standing interest in algorithms and theoretical CS, he combines rigorous problem-solving with practical production engineering. He often contributes as a mentor on teams and enjoys exploring new languages and technologies beyond his Python comfort zone.
10 years of coding experience
5 years of employment as a software developer
Master’s Degree Mathematics and Computer Science, Master’s Degree Mathematics and Computer Science at University of Zagreb / Sveučilište u ZagrebuSummer school - Fractals (mathematics), Summer school - Fractals (mathematics) at LjetnaŠkolaPete 2011Competitive Programming (Natjecateljsko programiranje)Summer school - Mathematics and Statistics, Summer school - Mathematics and Statistics at LjetnaŠkolaPete 2012
Croatian, English
Github Skills (23)
backend10
python9
linter8
autocomplete7
django6
saml-service-provider5
static-typing5
saml-metadata4
frontend4
admin-interface4
testbed3
admin3
typescript3
typechecker2
authentication2
Programming languages (2)
Github contributions (5)
pcustic/boardshare
Sep 2020 - Mar 2023
Contributions:4 pushes, 1 branch in 2 years 5 months
pcustic/password-reset-example-app
Dec 2023 - Jun 2024
Contributions:13 pushes, 1 branch in 5 months
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