Paweł Banaszewski
Software Developer at CodiLime
Warsaw, Masovian Voivodeship, Poland
Summary
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RockstarPaweł Banaszewski is a software developer based in Warsaw with 4 years of hands-on experience building backend systems and observability improvements for cloud-native infrastructure. At CodiLime he focuses on API server internals, metrics and tracing, bringing practical experience from contributing to flagship open-source projects like Kubernetes and its apiserver libraries. His contributions include implementing request-latency metrics, refining histogram buckets, and adding verb/resource tracing attributes—work that improves production visibility for large distributed systems. Pragmatic and detail-oriented, he combines engineering rigor with a focus on measurable reliability improvements that benefit operators and platform teams.
4 years of coding experience
Github Skills (9)
kubernetes10
go10
api10
trace10
tracer10
apidoc10
kubernetes-pods10
metric10
testing9
Programming languages (2)
Github contributions (5)
kubernetes/kubernetes
Oct 2021 - Nov 2022
Production-Grade Container Scheduling and Management
Role in this project:
Backend Developer
Backend DeveloperContributions:44 reviews, 5 commits, 12 PRs in 1 year
Contributions summary:Paweł primarily contributed to the backend of the Kubernetes project, focusing on metrics and API server enhancements. They modified the metrics gathering for API request durations, including adjustments to the buckets used for latency measurements. The user also added new metrics to track request latencies for webhooks, and included changes in tests that validate webhook durations. Furthermore, the user updated code to incorporate scope and verb tracing attributes.
containersschedulingdockergradeproduction-grade
kubernetes/apiserver
Oct 2021 - Nov 2022
Library for writing a Kubernetes-style API server.
Role in this project:Backend Engineer
Backend EngineerContributions:5 commits in 1 year
Contributions summary:Paweł contributed to the Kubernetes API server, primarily focusing on metrics and tracing. They implemented a new metric for request latencies and modified existing metric buckets. Furthermore, the user added verb and resource information to request trace attributes. These changes involved modifying core API server code related to request handling and metrics collection.
apikubernetesk8s-stagingapi-server
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