Freelancer profile translated to English.
Back to original languageAbout Guillaume
CTO, SRE, DevOps, DevSecOps, AIOps, MLOps, Cloud Architect and Cloud-Native Developer, Cloud Economist
Doctor Engineer for over 10 years, I provide my expertise as a DevOps, DevSecOps, MLOps, FinOps architect within a CSR strategy, here's why 👇
Over the last 10 years, I have been a developer, lead, and co-founder CTO for about twenty companies.
➡️ Technologies:
- Cloud Provider: Amazon Web Services (AWS), Google Cloud Platform (GCP), Azure, Digital Ocean, Scaleway, OVH, Huawei Cloud, Hetzner, Alibaba Cloud
- Containerization + Orchestration: Docker, Containerd, Kubernetes
- Serverless: Knative, AWS Lambda, Serverless framework and serverless databases
- Languages: Go, Rust, Node.JS, Python, Ruby, PHP, Shell
- Infrastructure as Code (IaC): Terraform, Ansible, Packer, Puppet
- Continuous Integration / Continuous Delivery (CI/CD): GitLab, GitHub, BitBucket, Jenkins
- Observability (Monitoring): Prometheus, Grafana, Thanos, Minio, Loki, AlertManager, DataDog, PagerDuty, PingDom, OPSGenie, ElasticSearch, Kibana (ELK), Tempo
- Queue: Kafka, NATS, SQS
- GitOps: Flux, ArgoCD
- Security: Audit, Trust, Compliance, Scan, 0 CVE, Signature, Chainguard, SOC2, ISO 27001, ISO 27002
- Secret Manager: Vault
- Network: Tailscale, Wireguard, VPCs, Istio, Cilium, Service Mesh, RDMA (RoCE/Infiniband), SR-IOV, eBPF, DPDK, iWARP
- Storage: Block Storage, CEPH, S3, iSCSI, NVMeOF
- Productivity: Skaffold, Tilt, GitPod
- Database: PostgreSQL, MySQL, MariaDB, MongoDB, ScyllaDB, Redis (ValKey)
- Policies: OPA, Kyverno, Keto
- Authentication & Authorization, including SSO solutions: Keycloak, ORY Kratos, ORY Hydra, Authentik
- AI: Kubeflow, LangChain, LLM, MLOps, LocalAI, GPU / vGPU
- API: gRPC, REST, graphQL
On-Call / 24/7 Managed Services
French
Native or bilingual
English
Fluent
Can work on-site
Bordeaux (up to 50km), Paris (up to 20km), Toulouse (up to 20km), Nantes (up to 20km)
Experience
- Confidentiel - Finance - CryptoPlatform Engineering ManagerBANKING AND INSURANCEJanuary 2025 - December 2025 (11 months)Lead Platform / Cloud & SRE Engineer with extensive experience in AWS architecture, platform reliability, and technical team management (Platform & SecOps).I have led the design, evolution, and operation of critical cloud platforms, ensuring scalability, high availability, performance, and security.Accustomed to defining and managing SLOs/SLIs, I place resilience and automation at the heart of practices.I also have solid experience in cybersecurity and DevSecOps, integrating security requirements, IAM, and compliance from the design phase, in close collaboration with security teams.Finally, I act as a technical referent and escalation point for development teams, while driving cloud cost optimization without compromising reliability.
- HiventiveCEO/CTOSOFTWARE PUBLISHINGSeptember 2018 - Today (7 years and 9 months)CEO/CTO at Hiventive, where I play a key role in the design, security, and industrialization of complex cloud infrastructures, with a strong focus on automation, reliability, and compliance.My work includes:• Designing scalable and resilient cloud architectures,• Industrializing deployments through GitOps and Infrastructure as Code practices,• Defining and maintaining infrastructure standards that meet high requirements for security, traceability, and compliance (SOC2),• Supporting application teams on cloud and DevOps best practices.Beyond the technical aspect, I act as a transverse support point between the infra, product, and security teams, with a pragmatic approach focused on production reliability, operational simplicity, and team autonomy.
Reviews
P
Pierre-Alexandre
Hexaglobe
Reviewed on 6/10/2024
Guillaume accompanied us for 2 days to help us define our needs for implementing a Kubernetes architecture for a specific use case. He listened to us and questioned our needs to guide us towards solutions that fit our use case. We finished the session with a very clear idea of the project's progress. Thank you.
James
Co-founder - Yield Studio
Several days project
-
Reviewed on 5/11/2026
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Education
- Doctor / PhDUniversity of Bordeaux2017Advances in SystemC/TLM Virtual Platforms: Configuration, Communication and Parallelism. Electronic Simulation. Hardware Design. Embedded Systems. Methodologies. Instruction-set and pipeline simulation, memory hierarchy modeling. Experience with ARM-based SoC. SystemC Kernel editor. Simulation for parallel and heterogeneous architectures.
- Master SISEAUniversity of Rennes2014Systèmes Embarqués