Andrej Ocenas
Senior Software Engineer at Grafana Labs
Slovakia
Summary
🤩
Rockstar🎓
Top SchoolAndrej Ocenas is a Senior Software Engineer with 11 years of experience building full-stack, observability-focused systems from Slovakia. At Grafana Labs since 2019 he has contributed across frontend and backend domains, shaping UX and data-query paths for high-profile projects like Grafana, Pyroscope, and the scalable profiling aggregator Phlare. He combines pragmatic engineering with systems thinking—shipping Monaco editor integrations, custom query APIs, and data frame format changes that improve developer workflows and profiling exploration. Prior roles range from leading engineering teams and introducing GraphQL at Operam to modernizing web platforms and Docker-based infrastructure at VECTARY and Modrý koník. Comfortable in polyglot environments (JS, Java, PL/SQL) and large codebases, he pairs hands-on implementation with mentoring and infrastructure ownership. A detail-minded contributor, he often works on the connective tissue between UI polish and backend performance that makes observability tools product-ready.
11 years of coding experience
9 years of employment as a software developer
Informatics, Informatics at Slovak University of Technology in Bratislava
English, Slovak
Github Skills (34)
javascript10
flamegraph10
tracer10
back-end-development10
api-design10
typescript10
user-interface10
monaco-editor10
go10
front-end-development10
typescript-types10
typescripts10
trace10
react10
restful-api9
Programming languages (12)
Github contributions (5)
grafana/grafana
Jan 2019 - Jan 2023
The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:3 releases, 1462 reviews, 547 commits in 4 years
Contributions summary:Andrej primarily contributed to the Grafana project's front-end, back-end, and potentially UI components. Their commits demonstrate expertise in the front-end by developing user interfaces, specifically for features such as color picker components and the ability to filter values and to create internal links. They also demonstrate back-end skills, with the code changes related to data source configurations. In addition, they modified both the front end and back end to integrate the Xray backend with the existing architecture, implying full-stack contributions.
visualizeobservabilitybusiness-intelligencegrafanaprometheus
grafana/phlare
Jul 2022 - Dec 2022
🔥 horizontally-scalable, highly-available, multi-tenant continuous profiling aggregation system
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:2 reviews, 75 commits, 1 PR in 4 months
Contributions summary:Andrej contributed significantly to the development of the fire-datasource, focusing on both frontend and backend aspects. Their work included implementing the query API and adding a Monaco editor with basic language configuration for the label selector, which involved frontend code modifications. Furthermore, the user also contributed to the backend side by implementing the query path and modifying the data frame format. The user's contributions touch multiple parts of the project, implying a full-stack involvement.
scalableperformance-monitoringprofilingtenantaggregation
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