Mateusz Szostok
Staff Engineer at Cast AI
Poland
Summary
🤩
Rockstar🎓
Top SchoolMateusz Szostok is a Staff Engineer with a decade of experience building cloud-native systems, specializing in Go and Kubernetes. He combines hands-on back-end development with DevOps expertise, having contributed to prominent open-source projects like Botkube and Kyma where he improved CI/CD, cluster provisioning, and operator workflows. Mateusz has led teams at Kubeshop and advanced platform reliability at Cast AI, frequently owning the full SDLC from design to production. His work spans controller development, Helm/operator integrations, and automation that streamlines testing and release pipelines. Notably, he implemented automated image builds for Botkube PRs and created GKE provisioning scripts and Job Guard tooling for Kyma’s test infra—practical improvements that materially sped up development cycles. Based in Poland, he blends technical leadership with deep contributor experience across well-known cloud-native communities.
10 years of coding experience
9 years of employment as a software developer
Master's degree, Computer Science, Master's degree, Computer Science at The Silesian University of Technology
Polish, English
Stackoverflow
11reputation
37reached
0answers
1question
Github Skills (22)
kubernetes10
docker10
configuration-management10
bash10
dockers10
cicd10
gcp10
go10
helm10
kubernetes-pods10
jenkins10
g10
service-catalog10
testing9
go-modules9
Programming languages (14)
Github contributions (5)
kubeshop/botkube
May 2022 - Jan 2023
An app that helps you monitor your Kubernetes cluster, debug critical deployments & gives recommendations for standard practices
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:5 releases, 519 reviews, 79 commits in 7 months
Contributions summary:Mateusz contributed to the development of Botkube by implementing features related to configuration management via environment variables and external volumes. This included changes to the codebase, adding support for Helm chart configurations, and updating the go.mod dependencies. Furthermore, the user added an automated build and push image process for pull requests, optimizing the development workflow with the help of the bash scripts to build, tag, and push Docker images to ghcr.io.
chatopsmonitorbotmonitoringcritical
kyma-project/kyma
Jul 2018 - Jul 2020
Kyma is an opinionated set of Kubernetes-based modular building blocks, including all necessary capabilities to develop and run enterprise-grade cloud-native applications.
Role in this project:Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:147 commits, 293 PRs, 146 pushes in 2 years
Contributions summary:Mateusz's commits primarily focus on enhancing the installation process and configuration of components within the Kyma project. The user added support for parameters needed to install the etc-operator, modifying configuration files and installation scripts. They also introduced the etcd-backup tool, including component integration in the codebase, alongside implementing related tests and adding integration steps within the CI/CD pipeline. Additionally, the user addressed formatting and naming convention issues.
flexibledevopscloud-foundryopenui5sap-hana
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