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Julien BessacJB

Julien Bessac

Web Back-end Developer

€630/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

  • French

    Native or bilingual

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

Experience

  • TotalEnergies
    Web Back-end Developer
    May 2025 - Today (1 year and 3 months)
    Design and develop back-end microservices in a distributed architecture Implement robust and secure REST APIs for high-traffic applications Participate in defining API contracts and structuring inter-service communication Manage data persistence and optimize access for good performance Implement validation, error handling, and logging mechanisms Ensure code quality through best practices (clean code, SOLID principles, modularity) Write and maintain unit and integration tests Participate in code reviews and continuous improvement of development standards Collaborate with DevOps teams for continuous integration and service deployment Contribute to service scalability and resilience (load management, timeouts, retries) Work in an Agile/Scrum framework (daily meetings, sprint planning, retrospectives)
  • RATP
    Fullstack Developer / Tech Lead
    May 2023 - May 2025 (2 years)
    Take charge of the technical lead for the product and define technical directions Coach and support a team of developers (code reviews, technical support, best practices) Supervise delivery and ensure commitments regarding quality, deadlines, and scope Back-end development of the application with Fastify Front-end development with Angular for HR team interfaces Design and implement data import batches Process, validate, and transform large CSV files Implement complex business calculations from imported data Ensure data flow reliability and manage error cases Contribute to architectural choices and code structuring Close collaboration with functional teams to ensure alignment between business needs and technical solutions Continuous improvement of code quality and application maintainability
  • FDJ
    Front-end Angular Developer
    May 2020 - April 2023 (2 years and 11 months)
    I joined La Française des Jeux as part of a project to modernize and industrialize digital content management tools. The mission was part of an environment with high stakes for performance, maintainability, and UI consistency, with significant needs for rapid deployment of marketing and editorial pages. I worked within a technical team focused on digital products, in close collaboration with UX/UI, marketing, and business teams. The main objective was to design a robust and flexible custom CMS, enabling non-technical teams to effectively manage content while ensuring a high level of front-end quality.

    Set up and configure Storybook to document, test, and standardize front-end components Structure the front-end to ensure maintainability, scalability, and code reusability Collaborate with designers to ensure UI/UX fidelity and graphic consistency Participate in front-end technical choices (component architecture, code organization) Optimize page performance (loading time, static rendering) Contribute to improving the developer experience through documentation and component sharing tools Work in a collaborative environment with continuous integration of functional evolutions

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Education

  • AWS Cloud Practitioner
    ENIT (National Engineering School of Tarbes)
    2022
    AWS Cloud Practitioner
  • Generalist Engineer Degree
    2016
    Diplôme d'ingénieur généraliste

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