Cyril Tovena
Senior Principal Software Engineer at Grafana Labs
Avignon, Provence-Alpes-Côte d'Azur, France
Summary
🤩
Rockstar🎓
Top SchoolCyril Tovena is a Senior Principal Software Engineer with 11 years of experience building scalable, distributed systems and observability tooling from Ubisoft to Grafana Labs. At Grafana he led development of AI-driven features like Grafana Assistant and core backend work across Loki, Cortex and Mimir, contributing to widely used open-source projects that power Prometheus long-term storage and profiling systems. He combines deep Go backend expertise with system architecture and DevOps experience—optimizing index schemas, query validation, and performance-sensitive ingest paths. Cyril has a track record of shipping infrastructure improvements (schema v11 for Mimir, profiling aggregation in Phlare) and practical tooling (parquet analysis, proto/build automation). Based in Avignon, he pairs hands-on coding with technical leadership, having introduced containerization, CI/CD and cloud patterns at scale. An often underappreciated strength is his blend of game-server/metrics know-how and AI-agent work, bridging realtime systems and emerging ML-driven developer tooling.
11 years of coding experience
15 years of employment as a software developer
Master's Degree in Computer Science (Master II) Specialty software engineering, Master's Degree in Computer Science (Master II) Specialty software engineering at CY TechHigh-school diploma in Science specialization in mathematics, High-school diploma in Science specialization in mathematics at Lycée St LouisAdvanced Technician Certificate in Computer Science and Networks for Industry and Technical Services, Advanced Technician Certificate in Computer Science and Networks for Industry and Technical Services at St Jean Baptiste de La Salle
French, English
Github Skills (46)
kubernetes10
back-end-development10
apidoc10
protocol-buffers10
databases10
gameserver10
data-storage10
go10
prometheus10
api10
kubernetes-pods10
golang10
backend10
server10
protobuffer10
Programming languages (15)
Github contributions (5)
grafana/phlare
May 2022 - Mar 2023
🔥 horizontally-scalable, highly-available, multi-tenant continuous profiling aggregation system
Role in this project:
Back-end Developer & System Architect
Back-end Developer & System ArchitectContributions:211 reviews, 594 commits, 242 PRs in 9 months
Contributions summary:Cyril's contributions primarily involved modifying core backend code, particularly within the `proto` directory. They were responsible for adding features related to profile handling. They appear to be working with gRPC and protobuf in the backend. Furthermore, the commits also indicate the user's work on system-level configurations and structures, touching aspects related to API design and integration within the service architecture.
scalableperformance-monitoringprofilingtenantaggregation
cortexproject/cortex
Apr 2019 - Sep 2021
A horizontally scalable, highly available, multi-tenant, long term Prometheus.
Role in this project:Back-end Developer
Back-end DeveloperContributions:13 reviews, 74 commits, 46 PRs in 2 years 5 months
Contributions summary:Cyril contributed significantly to the `cortexproject/cortex` repository, a long-term Prometheus storage solution. Their commits focused on enhancing the core functionality of the chunk store, including adding the ability to fetch label values and names. The user also implemented validation checks and optimization efforts, specifically splitting query validation and improving the index query signature. Moreover, the user worked on refining the query range functionalities.
golangscalabletenantprometheus-exporterlong-term
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