Peter Štibraný
Software Engineer at grafana
Denmark, United States
Summary
🤩
RockstarPeter Štibraný is a seasoned backend software engineer with 14 years of experience, currently contributing at Grafana Labs from Denmark. He specializes in scalable, multi-tenant monitoring systems—especially Prometheus ecosystem projects like Cortex, Thanos, Mimir, Loki and Grafana—focusing on distributed systems, storage, and performance optimizations. His contributions show deep expertise in query performance, memory optimizations, API design, and reliability features such as unique token management and Consul key watching. Peter moves between engineering and DevOps concerns, handling dependency compatibility, build tooling, and Kubernetes service config refinements. He has a track record of pragmatic refactors and measurable improvements (e.g., chunk caching, postings fetching, and regex-set/query optimizations) that reduce memory use and speed up queries. Colleagues would note his steady focus on backend stability and observability tooling at production scale.
14 years of coding experience
Stackoverflow
32,673reputation
6.7mreached
241answers
33questions
eclipse-plugin
top-1%
java
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aes
top-5%
concurrency
top-5%
Github Skills (80)
timeseries-database10
cortex10
cortex-a10
testing10
databases10
consul10
eclipse10
monitoring10
api10
sql10
jsonnet10
kubernetes-pods10
idioms10
grpc10
database10
Programming languages (13)
Github contributions (5)
cortexproject/cortex
Sep 2019 - Apr 2022
A horizontally scalable, highly available, multi-tenant, long term Prometheus.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 releases, 1432 reviews, 294 commits in 2 years 7 months
Contributions summary:Peter contributed to the core functionality of the Cortex project, with a focus on distributed system components, data storage, and database interactions. Their work includes implementing unique token generation and management, and also, they developed new features related to Hashicorp's Consul key watching. Moreover, the user was involved in code improvements through the adoption of Go time/rate libraries and the refactoring and the optimizations of metrics.
golangscalabletenantprometheus-exporterlong-term
grafana/mimir
Mar 2020 - Jan 2023
Grafana Mimir provides horizontally scalable, highly available, multi-tenant, long-term storage for Prometheus.
Role in this project:Back-end Developer
Back-end DeveloperContributions:3 releases, 2396 reviews, 535 commits in 2 years 11 months
Contributions summary:Peter's commits primarily revolve around the development of backend features, focusing on enhancing the functionality and management of a monitoring system. Specifically, they implemented features to allow the deletion of Alertmanager configurations via a new API endpoint, alongside modifications to the query processing, including the addition of logging for query execution. These changes indicate a focus on API development and improving the efficiency and stability of the system's internal processes. The user also contributed to code for implementing instance limits in the distributor, and improving error reporting and control.
tenantobservabilitygrafanaprometheusstorage
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