Maciej Bratek
Senior Golang Engineer at Intellias
Krakow, Lesser Poland Voivodeship
Summary
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Rockstar🎓
Top SchoolMaciej Bratek is a Senior Golang Engineer based in Krakow with 11 years of experience building backend and event-driven systems for startups and product teams. He has strong open-source credentials from significant contributions to ThreeDotsLabs' Watermill library—adding middleware, cloud integrations, and refactors that improve message routing and maintainability. Maciej's career spans practical domain-driven design, CI automation, and stream-processing architectures at firms like Karhoo, GetHarley, and Intellias, demonstrating a consistent focus on resilient distributed systems. With a background in biophysics and PhD-level research automation, he blends scientific rigor and scripting automation with production-grade Go engineering. Colleagues rely on him for pragmatic refactors and dependable integrations that bridge cloud services and messaging infrastructure.
11 years of coding experience
11 years of employment as a software developer
Magister (Mgr) Biofizyka, Magister (Mgr) Biofizyka at Jagiellonian University
Polish, English, French, Spanish, Ukrainian
Github Skills (19)
middleware10
message-queue10
google-cloud-pubsub10
go10
pubsub10
testing9
event-driven-architecture9
go-modules8
nat7
cqrs7
golang7
natsio7
kafka7
event-emitter7
event-sourcing7
Programming languages (4)
Github contributions (5)
ThreeDotsLabs/watermill
Nov 2018 - Oct 2021
Building event-driven applications the easy way in Go.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:15 reviews, 41 commits, 38 PRs in 2 years 11 months
Contributions summary:Maciej primarily contributed to the development of the `watermill` library, focusing on features related to message routing, middleware, and integration with cloud services. Their work includes adding a throttle middleware, implementing a Google Cloud Pub/Sub subscriber, and refactoring existing code. The user also addressed dependency management and performed code cleanup tasks to improve the library's overall quality and maintainability.
golangstream-processingeventsnatsevent-sourcing
maclav3/airstation
Jan 2025 - Mar 2025
A micropython project for a homemade air quality control station using ESP32
Contributions:2 PRs, 56 pushes, 2 branches in 1 month
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