Théo Rey's CV

• Email: contact@reyth.dev
• Location: France
• Website: www.reyth.dev
• LinkedIn: reyth
• GitHub: Blamas

Summary

Senior SRE building and operating Kubernetes-native platforms across multi-cloud and on-prem environments. Focused on reliability engineering, internal tooling development, and security for high-stakes environments.

Skills

SRE: Kubernetes, IaC, GitOps (Flux, ArgoCD), Service Mesh (Istio, Cilium), Cloud security and hardening, Observability

Infrastructure: AWS, Azure, Scaleway, on-prem

Programming: Python, Go, TypeScript, Bash

Others: Linux systems and networking, Containerization, CI/CD, Load testing (k6), PostgreSQL

Languages: English, French

Experience

Senior Site Reliability Engineer, SWAN -- Remote, France

Feb 2024 – present

• Reduced 5xx error rate on payment-critical paths by tuning Istio circuit breaking, load balancing and retry policies

• Built internal load and reliability testing tooling with metrics and traces

• Rebuilt autoscaling on Karpenter (mixed fleet) and KEDA, cutting compute cost and scale-out latency

• Led zero-downtime PostgreSQL major upgrades on replicated production clusters under banking compliance constraints

• Operated multiple EKS clusters with 40+ services and complex network stack, including upgrades and hardening

• Designed SLO and alerting framework on Grafana, owned on-call rotation and incident response

DevOps Engineer, ZELROS -- Remote, France

Sept 2022 – Jan 2024

• Built a Java Kubernetes operator provisioning per-tenant Azure resource groups, storage and databases (80+ tenants)

• Implemented ISO 27001-aligned SecOps tooling with Falco, Kyverno, Trivy and Azure Workload Identity

• Deployed Prometheus + Thanos, Loki and Grafana across multi-tenant AKS clusters

• Owned GitOps pipelines with ArgoCD and disaster recovery with Velero

Cloud Engineer (Apprenticeship), SKYLOUD -- Lyon, France

Aug 2021 – Sept 2022

• Designed and delivered AWS/Scaleway Terraform architectures for ~10 client projects

• Administered RKE, EKS, and Kapsule Kubernetes clusters and led zero-downtime infrastructure migrations

• Deployed CI/CD pipelines, GitOps solutions, and Prometheus/Grafana/Loki monitoring stacks

IT Project Manager (Apprenticeship), ORANGE -- L'Isle d'Abeau, France

Sept 2020 – July 2021

• Wrote Python/Bash automation for data conversion and migration workflows

• Administered RHEL servers and deployed wiki infrastructure

Education

Claude Bernard University Lyon 1, Master in System, Networks and Infrastructures -- Lyon, France

Sept 2020 – June 2022

• Systems, networks, security, virtualization and orchestration

Claude Bernard University Lyon 1, Bachelor's degree in Computer Science -- Lyon, France

Sept 2017 – June 2020

• Algorithms, OOP, networking, databases

Certifications

CKS, Certified Kubernetes Security Specialist: 2022

CKA, Certified Kubernetes Administrator: 2021

TOEIC, English - 990: 2022