Olivier Lemasle
Senior Software & DevOps Engineer at I-TRACING
Angers, Pays de la Loire, France
Summary
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Rockstar🎓
Top SchoolOlivier Lemasle is a Senior Software & DevOps Engineer with 13 years of experience building reliable cloud, automation and security solutions from France. He blends backend engineering, DevOps and QA expertise—contributing to high-profile open-source projects like Detekt, kube-state-metrics, Open Policy Agent and Tauri—where his work ranges from bug fixes and packaging to CI/test infra and security hardening. At I-TRACING and previously at Apalia/Amysta he has driven private and public cloud projects, focusing on build reliability, dependency maintenance and measurable metrics. Comfortable across languages and platforms, he has a track record of fixing subtle test and build issues (including 32-bit and WebAssembly-related problems) that improve long-term stability. Trained as an engineer at École Centrale de Lyon with a background in human-centered work psychology, he brings both technical depth and attention to operational ergonomics. Colleagues rely on him for pragmatic, low-level fixes that prevent production surprises as much as for designing robust cloud tooling.
13 years of coding experience
12 years of employment as a software developer
Classes préparatoires MP*, Mathematics, Physics, Computer Science, Classes préparatoires MP*, Mathematics, Physics, Computer Science at Lycée Clemenceau, NantesMaster 2, Psychologie sociale du travail, Master 2, Psychologie sociale du travail at Université Lumière (Lyon II)Diplôme d'ingénieur, Systèmes d'Information, Conseil, Diplôme d'ingénieur, Systèmes d'Information, Conseil at École Centrale de Lyon
Stackoverflow
1,229reputation
134kreached
25answers
1question
Github Skills (65)
dependency-management10
e2e-testing10
testing10
windows10
instrumentation10
javas10
automation10
gradle-plugin10
k8s10
static-analysis10
linux10
dockers10
api10
kubernetes-pods10
rust10
Programming languages (24)
Github contributions (5)
kubernetes-sigs/custom-metrics-apiserver
Nov 2022 - Jan 2023
Framework for implementing custom metrics support for Kubernetes
Role in this project:
Back-end Developer
Back-end DeveloperContributions:26 reviews, 27 commits, 23 PRs in 1 month
Contributions summary:Olivier primarily contributed to the maintenance and improvement of the custom metrics API server. Their work involved removing obsolete code related to fake discovery, bumping dependencies to newer versions, and refactoring options handling. The user also added support for OpenAPI v3 and addressed issues related to internal metrics and code formatting.
custom-metricsk8s-sig-instrumentationkubernetesprometheusmetrics
kubernetes/kube-state-metrics
Feb 2020 - Oct 2021
Add-on agent to generate and expose cluster-level metrics.
Role in this project:DevOps Engineer & QA Engineer / Test Automation Engineer
DevOps Engineer & QA Engineer / Test Automation EngineerContributions:2 reviews, 17 commits, 11 PRs in 1 year 8 months
Contributions summary:Olivier contributed to improving the project's build and test infrastructure, as evidenced by changes to the `e2e.sh` script, including Minikube upgrades and test setup adjustments. They also focused on ensuring the reliability of the project's metrics by adding tests to validate the metrics and their documentation. Furthermore, they added tests to confirm the correct behavior of metrics related to kube-state-metrics.
prometheus-exporteragentkubernetes-exporterobservabilityexpose
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