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Mohammed H.MH

Mohammed H.

Principal Software Architect — TypeScript · DDD ·

€800/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Mohammed

Independent software architect with 13+ years of experience on large-scale distributed systems for major clients — Hermès, Orange, OVH, Adeo, Decathlon.


Specializing in Domain-Driven Design (DDD) and Hexagonal Architecture, I transform complex legacy systems into maintainable and sustainable Clean architectures.

What I deliver:
🔍 Architecture Audit — code review, technical debt, prioritized roadmap
🚀 Project Bootstrap (0→1) — architecture, monorepo, CI/CD, team standards
🔄 Legacy Migration — incremental modernization to Clean / Hexagonal
🎓 CTO as a Service — tech governance, recruitment, weekly code review

Main Stack:
TypeScript · Node.js · NestJS · Kafka · AWS · GCP · Docker · Kubernetes
DDD · Hexagonal Architecture · Clean Architecture · CQRS · Event-Driven

Available in Paris · Lille · Brussels · Remote
  • English

    Native or bilingual

Can work on-site
Paris (up to 50km), Lille (up to 50km)

Experience

  • Hermès International
    Senior Backend Developer
    LUXURY GOODS
    January 2026 - Today (5 months)
    Paris, France
    HDVS Project — Refactoring and securing the global customer identity ecosystem (CIAM) for Hermès International.

    - Design of CIAM authentication flows for all global customer touchpoints
    - Master Data Management (MDM) architecture for centralizing customer data into a single source of truth (SSOT)
    - Implementation of real-time streams via Kafka for inter-service synchronization
    - Deployment of microservices on AWS via ArgoCD (GitOps) with Jest testing strategy (unit + integration)
    Typescript Node.js MongoDB Apache Kafka AWS
  • Orange SA - Orange Digital Ventures
    Senior Node.js Developer
    BANKING AND INSURANCE
    June 2025 - December 2025 (6 months)
    Paris, France
    Architecture and bootstrap of the Node.js backend for a critical authentication platform (secure wrapper around Keycloak).

    - Design of a NestJS backend in Hexagonal Architecture (Ports & Adapters) — strict separation of concerns, guaranteed long-term maintainability
    - Owner of the complete Node.js lifecycle: project setup, architectural decisions, CI/CD pipeline (GitLab CI + Docker)
    - Management of a polyglot monorepo (pnpm workspaces + Turbo) integrating Node.js and Keycloak Java SPIs

    Stack: TypeScript · Node.js · NestJS · Keycloak · Docker · pnpm · Turbo · GitLab CI · PostgreSQL
    Node.js PostgreSQL Typescript NestJs Docker
  • offre esenca
    Software Architect
    DIGITAL AND IT
    January 2024 - Today (2 years and 5 months)
    Ronchin, France
    • Define software architectures
    • Choose technical stack
    • Conducting POCs
    • Define scale strategies
    • Prototype new libraries
    • Hands-on Front-end development (Vue.js & React.js)
    • Hands-on Back-end development (Node.js, NestJS, tRPC)
    • CI/CD (GitLab CI/GitHub Actions)
    • Cloud deployments (GKE, Cloud Run..)
    Node.js tRPC Vue.js TailwindCSS NestJs

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Education

  • Engineer's degree, Computer Software Engineering
    HIGH TECH - RABAT
    Engineer's degree, Computer Software Engineering

Skill set

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