Javi Molina
Senior Software Engineer at Grafana Labs
Granada, Andalusia, Spain
Summary
🤩
Rockstar🎓
Top SchoolJavi Molina is a Senior Software Engineer with 11 years of experience building and operating high-scale distributed systems, currently helping scale Grafana Tempo to handle petabytes of tracing data daily. He combines backend engineering and DevOps instincts—designing ingestion pipelines, storage and query engines (TraceQL), and reliability improvements for multi-tenant, cost-sensitive environments. Previously he led architecture and re-architecture efforts for TB-per-day ingestion at Onna and built serverless data platforms and CI/CD pipelines as a principal contractor. An active open-source contributor, he’s improved Tempo’s debugging tooling, test coverage and build process, showing a pragmatic focus on observability and operability. Based in Granada, Spain, Javi blends hands-on implementation with operational excellence and a knack for turning complex distributed challenges into maintainable, testable solutions.
11 years of coding experience
14 years of employment as a software developer
Ingeniero Informática Ingenieria, Ingeniero Informática Ingenieria at Universidad de GranadaMaster degree Master's Programs, Master degree Master's Programs at University of Bergen (UiB)
English, French
Github Skills (8)
go10
go-testing10
testing10
distributed-tracing9
command-line-tool8
kafka7
dockers5
docker5
Programming languages (13)
Github contributions (5)
grafana/tempo
Jul 2024 - Jul 2026
Grafana Tempo is a high volume, minimal dependency distributed tracing backend.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:451 reviews, 283 PRs, 274 pushes in 2 years
Contributions summary:Javi implemented new helper functions for debugging end-to-end tests, adding features to improve the debugging experience within the Tempo backend. They added examples of the Tempo vulture command-line tool. They also refactored code related to Tempo Vulture, covering the logic with unit tests and fixed a bug to handle out-of-bounds span kinds. Furthermore, they contributed to the build process and general code structure.
backenddistributed-tracinggrafana-tempografana
javiermolinar/javiermolinar.github.io
Apr 2016 - Jan 2026
Personal blog
Contributions:19 PRs, 80 pushes, 10 branches in 9 years 10 months
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