Marcin Gantkowski
Backend & Mobile Developer Freelance R&D Projects at Self-employed · Remote
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolMarcin Gantkowski is a backend and mobile developer with a decade of experience building secure, scalable server-side systems in Java, Kotlin and .NET. He specializes in Spring Boot REST APIs, Kotlin Multiplatform mobile clients and data-backed services (PostgreSQL/SQL Server), and has a track record of improving performance and maintainability through clean migrations and architecture. As a freelance R&D engineer he’s leading Satori, a privacy- and accessibility-focused app for neuroatypical users that demonstrates his emphasis on offline-first design, security and real-world user needs. Past work includes migrating an autism-support web platform from Laravel to ASP.NET Core and building production APIs and auth systems consumed by mobile apps. His background in records management and NGO web projects gives him unusual strength in data governance, compliance and user-centered design. Based in Warsaw, he’s open to backend roles where pragmatic engineering meets social impact.
10 years of coding experience
1 year of employment as a software developer
Master's degree, Historia, Master's degree, Historia at University of Warsaw
English
Github Skills (2)
menu1
react1
Programming languages (3)
Github contributions (5)
mart-gant/Tolkien-Quiz-App
Feb 2022 - May 2022
Contributions:1 review, 36 commits, 14 PRs in 3 months
mart-gant/ProductAPI
Jun 2024 - Jun 2024
ProductApi in Spring
Contributions:13 PRs, 9 pushes, 8 branches in 12 days
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