# Théo Rey's CV

- Email: [contact@reyth.dev](mailto:contact@reyth.dev)
- Location: France
- Website: [www.reyth.dev](https://www.reyth.dev/)
- LinkedIn: [reyth](https://linkedin.com/in/reyth)
- GitHub: [Blamas](https://github.com/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