Freelancer profile translated to English.

Description

Cloud & DevSecOps Expert / Cyber Architect with 20 years of experience in critical environments, from traditional datacenters to cloud-native architectures.

I work on both operational missions and senior consulting to design, secure, and industrialize modern infrastructures.

Key Skills:

Kubernetes (build, run, security, troubleshooting)
Cloud: AWS, GCP, OVH, Scaleway
Terraform / Ansible / GitLab CI/CD / Docker
Security: IAM, Zero Trust, Vault, OPA, audit, hardening
Observability: Prometheus, Grafana, centralized logs
Applied AI: RAG, LLM, Python / FastAPI automation

Mission Examples:

Multi-cloud Kubernetes cluster implementation
Migration of legacy infrastructures to modern cloud
CI/CD overhaul and deployment automation
Security audit and attack surface reduction
DRP / BCP / business continuity
Cloud cost & performance optimization

What I bring:

Architecture vision + field execution
High autonomy
Clear communication with technical teams and management
Rapid resolution of complex issues

Formats:

One-off mission, senior support, audit, long-term accompaniment, remote or hybrid.

Indicative daily rate: €800 depending on scope and level of involvement.

Languages

English
Fluent
French
Native or bilingual

Workplace preferences

Can work on-site

Lyon (up to 10km)

EuroSX
CISO / Cloud Architect / DevSecOps
BANKING AND INSURANCE
May 2024 - November 2025 (1 year and 6 months)
Lyon, France
Designed and deployed a multi-cloud Kubernetes architecture on Google Cloud (GKE) and Amazon Web Services (EKS), interconnected by site-to-site VPN to improve workload resilience and portability.
Industrialized infrastructures via Terraform and GitLab CI/CD pipelines, reducing deployment times and human error risks.
Created a multi-source centralized SIEM for security alert correlation and cross-functional monitoring.
Deployed an internal LLM assistant with RAG for real-time alert analysis and team support.
Managed documentation compliance: PSSI / BCP / DRP / security awareness.
Terraform Kubernetes DevOps Cybersecurity Gitlab
ONOPS
Cloud Architect | DevSecOps
CONSULTING AND AUDITS
April 2024 - Today (2 years and 2 months)
Lyon, France
At ONOPs, I assist several clients with architecture, infrastructure modernization, performance, and security challenges.

Situations / Challenges: aging infrastructures, scalability needs, cloud cost control, deployment industrialization, reduction of security risks.

Actions taken:
• Migration and version upgrade of a MongoDB Sharded cluster from 3.6 to 8.2 with migration plan security
• Implementation of Kubernetes clusters on GCP and AWS
• Design of CI/CD pipelines and deployment automation
• Surface security audits and corrective recommendations
• Technical architecture, performance, and FinOps consulting

Results:
• Modernized and more resilient infrastructures
• Faster and more reliable deployments
• Reduced security risks
• Better control of cloud costs
• Environments ready to scale with business growth
MongoDB Consulting Kubernetes DevSecOps DevOps
Diagoriente
Expert Technical Architect / DevSecOps / CISO
PUBLIC SECTOR
October 2021 - Today (4 years and 8 months)
Lyon, France
Diagoriente (public digital program / beta.gouv.fr)
Designed and deployed Kubernetes clusters to ensure hosting reliability and improve service scalability.
**Managed infrastructure security**: network segmentation, firewalls, environment hardening, and access security.
Coordinated security audits and penetration testing campaigns, with remediation tracking and reduction of exposure surfaces.
Structured business continuity measures through formalization of BCP / DRP and resilience best practices.
Deployed collaborative protection solutions (anti-phishing, email security, user awareness).
Supported internal teams on cybersecurity issues, data leak prevention, and DevSecOps best practices adoption.
Kubernetes DevOps Audit Cybersecurity

Check out Marc's experience

Yoan

PRESTINE

Reviewed on 12/3/2024

We completed our first mission together with Marc, and he performed his duties very professionally. Marc is technically very competent in his field. My CTO and I recommend Marc; you can go with him with your eyes closed.

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