Darren Janeczek
Staff Software Engineer at Grafana Labs
Ontario, Canada
Summary
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Rockstar🎓
Top SchoolDarren Janeczek is a Staff Software Engineer with 15 years of experience building scalable front-end and full-stack solutions, currently leading the Adaptive Telemetry Front End squad at Grafana Labs. He combines hands-on UI work—contributing to high-profile open-source projects like Grafana and Pyroscope—with pragmatic systems thinking to improve observability, dashboards, and query tooling. Known as a "Software Whisperer," Darren mentors engineers, drives cross-team collaboration, and translates product needs into tangible technical outcomes that keep product managers happy. His background in computational science and long history of applied research and capital markets software gives him a rare blend of analytical rigor and production-focused delivery.
15 years of coding experience
16 years of employment as a software developer
Master of Science - MS Computational Science, Master of Science - MS Computational Science at Laurentian University/Université Laurentienne
Stackoverflow
21reputation
6kreached
1answer
0questions
Github Skills (42)
develop10
dashboard10
observability10
typescript10
grafana10
ui-design10
uid10
go10
prometheus10
front-end-development10
jsonnet10
typescript-types10
typescripts10
backend10
react10
Programming languages (6)
Github contributions (5)
grafana/mimir
May 2021 - Oct 2022
Grafana Mimir provides horizontally scalable, highly available, multi-tenant, long-term storage for Prometheus.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:2 reviews, 48 commits, 4 PRs in 1 year 4 months
Contributions summary:Darren primarily focused on enhancing the Grafana Mimir project's dashboards and related configurations. Their contributions included refactoring dashboard utility functions to reduce code duplication and improve overrideability. They added new panels and descriptions, particularly within the reads and writes dashboards, enhancing the user experience and providing more informative visualizations. Furthermore, they introduced new configurations for job aggregation strings and made adjustments to the compactor and resource dashboards.
tenantobservabilitygrafanaprometheusstorage
grafana/grafana
Sep 2021 - Jul 2022
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:167 reviews, 4 commits, 192 PRs in 10 months
Contributions summary:Darren made several significant contributions to the Grafana project, primarily focusing on the Prometheus data source. They worked on improving the query inspector by suppressing errors from unsuccessful API checks, enhancing the dashboard functionality related to template variables by incorporating UID, and integrating Pyroscope query editor with link extensions. Additionally, they made changes to handle empty filters in Prometheus datasource variable queries. The user's commits reveal a deep understanding of Grafana's architecture, data source integrations, and UI components.
visualizeobservabilitybusiness-intelligencegrafanaprometheus
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