Marcin Krolik
Senior Software Engineer at Wikimedia Foundation
Haarlem, North Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolMarcin Krolik is a Lead Software Engineer with 13 years of experience designing and delivering cloud-native platforms, distributed systems, and scalable microservices across finance, telecommunications, and OSINT domains. He is fluent in Go and Python and has architected resilient systems using Kubernetes, gRPC, Kafka, NATS and event-driven patterns while driving observability and telemetry best practices. At Datenna he leads SaaS architecture for large-scale data ingestion and analytics, and previously built a cloud-native securities lending platform at Provable Labs under strict SLAs. His open-source contributions include stabilizing Intel’s Snap telemetry framework, highlighting a long-standing focus on reliable backend infrastructure and instrumentation. Colleagues rely on him for technical leadership, mentoring, and turning complex data and performance requirements into maintainable production systems. Based in Haarlem, Marcin combines deep systems engineering with a practical bias for delivery and continuous improvement.
13 years of coding experience
18 years of employment as a software developer
Diploma Computational Physics 2004, Diploma Computational Physics 2004 at Technical University of GdanskHigh school diploma Electronics, High school diploma Electronics at Technical College of Telecomunication of Gdansk
English, Polish
Github Skills (7)
error-handling10
go10
api8
apidoc8
system-design7
architectures6
architecture6
Programming languages (5)
Github contributions (5)
intelsdi-x/snap
Dec 2015 - Nov 2016
The open telemetry framework
Role in this project:
Back-end Developer
Back-end DeveloperContributions:26 commits, 18 PRs, 5 pushes in 11 months
Contributions summary:Marcin primarily contributed to the back-end functionality of the project. Their work included addressing issues related to content type handling and error reporting in the scheduler, specifically within the `scheduler/job.go` file. Further contributions involved modifying core functionalities like changing the signature of `core.NewNamespace` and introducing a function for adding static elements and also fixed issues related to pool eligibility in `control/strategy/pool.go`. These modifications suggest a focus on improving the stability, and capabilities of the underlying framework.
opentelemetry
intelsdi-x/snap-plugin-collector-interface
Dec 2015 - Nov 2016
Collects network interface metrics from /proc/interface
Contributions:14 commits, 9 PRs, 6 pushes in 11 months
network-interfaceproc
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