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Sofiane StamboulSS

Sofiane Stamboul

Lead Backend & DevOps AWS — GraphQL, Terraform

€800/day
6 projects
Paris, FR
8-15 years

Average response time: A few days

Freelancer profile translated to English.
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About Sofiane

Backend & Cloud/DevOps Engineer with 10+ years of experience, certified AWS Solutions Architect Associate. For the past 6 years, I've been at the heart of the Eurosport / Warner Bros. Discovery technical ecosystem, operating 16 production services serving millions of users in 50+ countries, including the APIs for the Paris 2024 and Milano-Cortina 2026 Olympic Games.
My expertise:
• High-availability APIs: GraphQL (Apollo Server), REST, high-traffic event-driven architectures
• AWS Cloud: ECS Fargate, Lambda, Aurora, Kubernetes, OpenSearch, ElastiCache — Infrastructure as Code via Terraform
• DevOps & CI/CD: GitHub Actions, CircleCI, atomic microservice deployments, dynamic QA environments per PR
• Complex migrations: complete inter-AWS account migration, AWS -> IBM cloud migration, ECS/Beanstalk migration, Redis -> Valkey migration
• Technical leadership: mentoring DevOps teams, mentorship, implementing best practices
I work on critical backend projects for startups, scale-ups, and large enterprises (BNP Paribas, Stellantis/Free2Move, Warner Bros. Discovery). I also lead several personal projects (Hotily PWA sold, Tennis-Minute media, AI/LLM-based SaaS Adjugo).
Available for demanding technical missions — let's discuss your project.
  • French

    Native or bilingual

  • Arabic

    Native or bilingual

  • English

    Fluent

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

Experience

  • BNP Paribas Personal Finance
    AWS DevOps Technical Lead
    BANKING AND INSURANCE
    June 2023 - June 2024 (1 year)
    Paris, France
    As Lead DevOps, I managed the DevOps team and improved CI/CD pipelines with unit deployments for each microservice. I also handled the migration of the project from AWS to IBM Cloud.

    Key achievements:

    • CI/CD Improvement: Refactored pipelines, reducing deployment times and increasing reliability.
    • Microservice Unit Deployment: Implemented unit deployments, minimizing errors and accelerating production releases.
    • Re-architecting Cloud Migration: Successful transition from AWS to IBM Cloud.
    • Training and Mentoring: Coached the team on DevOps best practices and automated testing.
    • Environment Monitoring and Maintenance: Successful transition from AWS to IBM Cloud.

    This mission allowed me to strengthen my skills in CI/CD pipeline management, microservice deployment, and cloud migration.
    Amazon Web Services CircleCI Bash Node.js
  • Eurosport
    Lead Software Engineer
    PRESS AND MEDIA
    November 2019 - Today (6 years and 7 months)
    Issy-les-Moulineaux, France
    Context:

    Development of a GraphQL API to serve content from Eurosport's sports-focused content management system.

    Responsibilities:
    - Development of a GRAPHQL API
    - Implementation of CI/CD
    - Development of unit and integration tests
    - Deployment of multiple APIs via various infrastructures (AWS ECS, Elastic Beanstalk)
    - Infrastructure deployment via Terraform
    - Implementation of load tests using K6
    - Technical interviews for developers
    - Implementation of architectures for various video encoding workflows
    - Implementation of caching and auto-scaling strategies for better management of high traffic
    Environment: NodeJs, Apollo Server, ReactJS, Jest, Cucumber, CircleCI, AWS, Docker
    Amazon Web Services Node.js DevOps GraphQL Redis Continuous Integration Continuous Improvement API circle-ci github Back-End Development
  • iAdvize
    DEVOPS AWS
    TECH
    January 2022 - February 2022 (1 month)
    Paris, France
    Implementation of Terraform at the client's site and a CI/CD process via GitHub Actions. Addition of a development environment.
    Terraform AWS Next.js Github Actions

Reviews

4.7

Out of 3 ratings

M

Mohammed

Crealo

Reviewed on 3/6/2023

A pleasure to work with Sofiane, who has perfect knowledge of AWS technologies. Sofiane proposed and implemented an architecture suited to our challenges and our internal skills.
C

Charles

MUSEEC / medici.tv

Reviewed on 10/5/2020

Very good experience with Sofiane: accessible and efficient!

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Education

  • Master's Degree in Software Engineering
    University of Avignon
    2014

Certifications

Skill set

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