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Sébastien BergerSB

Sébastien Berger

IoT & Cloud Solutions Architect

€550/day
Nantes, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sébastien

I assist companies in the design, evolution, and production deployment of IoT platforms on the cloud.

My work covers data flow architecture, API design, platform reliability and scalability, in industrial and field contexts.

I work on existing projects or from scratch, with a pragmatic approach focused on real-world usage and long-term operation.
  • French

    Native or bilingual

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

Experience

  • Aradel
    IoT & Cloud Solutions Architect – Freelance
    INTERNET OF THINGS (IOT)
    May 2024 - Today (2 years and 2 months)
    Nantes, France
    I assist companies in the design, structuring, and evolution of cloud-based IoT platforms, in direct relation to field constraints and business needs.

    My work primarily focuses on:
    • Data flow architecture, from the collection of connected equipment to its exploitation
    • Design and evolution of robust APIs for data ingestion and exposure
    • Structuring reliable, maintainable, and scalable platforms
    • Securing developments through CI/CD and automated testing
    • Development and take-over of existing platforms in production

    I work on both greenfield projects and deployed platforms, with a pragmatic approach focused on long-term operation.
    IoT Web API API Platform Microservices Architecture Lean
  • R3
    Lead Dev
    TECH
    September 2022 - May 2024 (1 year and 8 months)
    Nantes, France
    Responsible for the evolution and maintenance of a web application developed with Python (Flask) and PostgreSQL.
    Led the migration of the application from a traditional server to Clever Cloud, optimizing resource management and scalability.
    Implemented user authentication via Keycloak, replacing the internal management system with a more robust and secure solution.
    Participated in the architecture design for several new projects, ensuring the scalability, performance, and security of proposed solutions.
    Python Flask Keycloak CleverCloud Web Architecture CI/CD
  • Comap
    Platform Architect
    TECH
    October 2018 - September 2022 (3 years and 11 months)
    Nantes, France
    Complete redesign of the thermostat IoT platform (developed at Qivivo), using a serverless architecture with AWS services to improve scalability and resilience.

    Implementation of various AWS technologies, including:
    - Lambda for serverless function execution,
    - API Gateway for API call management,
    - DynamoDB for NoSQL storage,
    - Kinesis for real-time data stream management,
    - SQS for asynchronous message queuing.
    - Integration of other technologies on EC2 instances, including:
    * InfluxDB, a time-series database for managing IoT data,
    * Keycloak for centralized user management and authentication.
    - Design and development of robust APIs with OpenAPI and authentication management via JWT (JSON Web Tokens).
    Cloud Architect Amazon Web Services Serverless Keycloak OpenAPI

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Education

  • DESS Computer Engineering, Computer Science
    University of Nantes, Faculty of Science
    2003
    DESS Génie Informatique, Informatique

Skill set

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