Stéphane Monfort, CTO & Senior Cloud Architect

18 years of complex systems architecture and technical team leadership. I structure information systems, lead cloud migrations and grow teams.

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Blog

Latest articles

My micro-SaaS blueprint for 2026

A technical and pragmatic guide to the technology choices for building and deploying a micro-SaaS in 2026.

SaaSArchitectureNuxtBlueprintCloud

Introduction to Durable Execution with Temporal

Durable execution promises reliable, fault-tolerant execution. Temporal is the reference implementation, illustrated with a real-world prototype.

Team Topologies: designing your organization like you design an architecture

Team Topologies offers a simple, actionable framework for structuring software teams around Conway's Law.

See all articles →

About

End-to-end tech expertise, from IT strategy to product delivery

I built my expertise over the past 18 years, from software architect at IBM to executive committee member at CACD2, the digital factory of Crédit Agricole Group, where I served as CTO for 7 years.

What sets me apart: a broad scope of action. Hands-on when needed, I can define and implement complex architectures, challenge technical choices and co-design solutions with teams. I also bring a strong strategic vision, ensuring technology is aligned with business goals.

Stéphane Monfort
18+
years of experience
45+
FTEs managed in total
8+
years of AWS experience
3
certifications
50+
projects delivered
100%
impact-driven

Experience

Professional experience

  1. 2018 – 2026

    Chief Technical Officer

    Crédit Agricole Conseil et Développement Digital

    • Founding member of the executive committee of Crédit Agricole Group's digital factory.
    • Led the Technology department: 40 FTE (architects, front/back/mobile developers, QA, DevOps, cybersecurity).
    • Defined and implemented the public cloud AWS/Azure strategy: private landing zone, at-scale infrastructure-as-code in Terraform.
    • Designed cloud-native architectures for Sofinco, LCL, CAA, CASA, CA-Titres, CA-PS, CAL&F, and CATE.
    • Business development: pre-sales, scoping, due diligences — +€11M revenue.
    Tech managementArchitectureAWSKubernetesCloud NativeDevSecOps

  2. 2014 – 2018

    Solutions Architect — Manager

    Sopra-Stéria

    • Manager within the Public Sector Business Unit.
    • Lead Sopra-Stéria architect for the French General Directorate of Public Finance.
    • Built from scratch the Pay-As-You-Earn tax withholding system and the Nominative Social Declaration.
    • Continuous improvement of the online income tax filing system, responsible for the performance stream.
    Enterprise ArchitecturePublic SectorPerformanceOpen Source

  3. 2008 – 2014

    Solutions Architect

    IBM Global Business Services

    • Fullstack developer then software architect within IBM GBS France's Application Innovation Services division.
    • International build projects in energy, media, and defense.
    • Expertise in SOA architecture security and IBM DataPower appliance.
    • EMEA Graduate Program — international training over 12 months.
    SOAIBM DataPowerSoftware ArchitectureFull-stack Dev

  4. 2005 – 2008

    General Engineer

    École Centrale de Lyon

    • General engineering degree with a specialization in information systems.
    EngineeringComputer ScienceInformation Systems

Expertise

My main areas of expertise

Full toolbox(72)
Cloud
AWS · Docker · Kubernetes · Terraform · Pulumi · Lambda · EKS · EC2 · ECS · Step Functions · RDS · S3 · SQS · Landing Zone · FinOps
CI/CD
GitOps · GitLab CI · Argo CD · Helm · SonarQube · Harbor · Renovate · n8n · Semantic Release
Security
DevSecOps · Zero Trust · OWASP · Vault · Dependency-Track · Trivy · AWS IAM · OIDC · WAF · Wazuh · SAST · DAST
Frontend
React · Next.js · Vue.js · Nuxt · Astro · Tailwind CSS
Backend
Spring Boot · Node.js · NestJS · GraphQL · REST API · tRPC · Go · Keycloak
Data & AI
PostgreSQL · MongoDB · Kafka · ElasticSearch · Redis · DynamoDB · DatoCMS · Athena · Bedrock · GitHub Copilot · Claude Code
Tooling
Git · Lazygit · GitHub · GitLab · Jira · Confluence · Notion · Neovim · Tmux · k9s · Bruno

Certifications

Professional certifications

AWS Certified Solutions Architect – Associate

TOGAF 9.1 Expert

Claude Code in Action

Contact

Get in touch

Feel free to reach out — I'm always happy to connect.

Contact me by emailContact me on LinkedIn

Or directly:stephane@monfort.pro