Joan De La Franca Beltran
Senior Software Engineer at Grafana Labs
Oregon, Spain
Summary
🤩
Rockstar🎓
Top SchoolJoan De La Franca Beltran is a Senior Software Engineer with 11 years of experience building backend systems and improving platform stability, currently contributing to Grafana Labs from Oregon. He has strong Go and backend expertise demonstrated by meaningful contributions to high-profile open-source projects like Grafana and k6, focusing on error handling, user management, SQL store improvements, and performance hardening. His background spans technical leadership and hands-on development across startups and research institutions, from leading Nepcom’s backend to developing workflow managers at the Barcelona Supercomputing Center. Comfortable across languages and stacks (PHP, Erlang, Go, React/TypeScript), he applies DDD, SOLID, and testing discipline to deliver reliable services. An economist by formal study alongside an informatics engineering degree, he brings a pragmatic, data-minded perspective to system design and operational tooling. Notably, his work on observability and load-testing tools shows a consistent focus on making complex systems more debuggable and performant.
11 years of coding experience
7 years of employment as a software developer
UPC Universitat Politècnica de CatalunyaUOC (Universitat Oberta de Catalunya)
Catalan, Spanish, English
Stackoverflow
579reputation
96kreached
1answer
23questions
Github Skills (38)
performance-monitor10
database-api10
apidoc10
loadtest10
databases10
user-authentication10
authentication10
performance-testing10
go10
api10
performance-analysis10
sql10
golang10
error-handling10
load-testing10
Programming languages (18)
Github contributions (5)
grafana/k6
Oct 2023 - Apr 2025
A modern load testing tool, using Go and JavaScript - https://k6.io
Role in this project:
Back-end Developer & Performance Engineer
Back-end Developer & Performance EngineerContributions:545 reviews, 107 PRs, 199 pushes in 1 year 6 months
Contributions summary:Joan primarily contributed to improving the k6 load testing tool by addressing several back-end-related issues. These changes include printing stack traces for exceptions within the summary handling function, preventing the use of deprecated networking features and implementing various performance optimizations. The contributions also show expertise in error handling and debugging within the Go language. The user's focus appears to be on enhancing the tool's stability and performance.
golangload-testingjavascripttestinges6
grafana/grafana
Aug 2020 - 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:Backend Developer
Backend DeveloperContributions:351 reviews, 178 commits, 251 PRs in 2 years 5 months
Contributions summary:Joan focused on improving error handling and implementing new user-related features within the Grafana platform. Their commits involve changes to the API, specifically the creation and management of users, including handling scenarios where users already exist. The user also implemented improvements to the SQL store and user tests, indicating a focus on the backend, likely involving database interactions and validation of user data. The code changes span across multiple files, including API endpoints and services related to user management, organization invites and user signups.
visualizeobservabilitybusiness-intelligencegrafanaprometheus
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