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Sébastien KellerSK

Sébastien Keller

Fullstack Ruby On Rails Developer

€500/day
1 project
Lille, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sébastien

Fullstack Ruby On Rails Developer for over four years, I have specialized in developing APIs and complete enterprise projects.

My significant experience in digital agencies has allowed me to acquire great technical autonomy, as well as experience in project management, consulting, and client support.

I chose to work as a freelancer to expand my projects and tackle new challenges.

I am available to carry out the following types of projects:

- Complete web application
- API creation
- MVP creation
- Audit and performance optimization
- Ruby and Ruby On Rails version upgrade
- Writing integration and unit tests

Technologies:

- Ruby on Rails, Redis, PostgreSQL
- JavaScript, StimulusJS/Hotwire, Bootstrap, Tailwind
- Rspec, Minitest, TDD
- Docker, Github Actions, Gitlab Pipeline

Do not hesitate to contact me for more information or to discuss your project, I will be happy to help you create or meet your needs.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Freelance
    Ruby on Rails Developer
    SOFTWARE PUBLISHING
    September 2021 - Today (4 years and 9 months)
    Lille, France
    Ruby on Rails Ruby JavaScript API PostgreSQL Redis Git GitHub Gitlab
  • OVHcloud
    Ruby on Rails Developer - Vue.js
    TELECOMMUNICATIONS
    April 2022 - December 2023 (1 year and 8 months)
    Roubaix, France
    - Ruby On Rails back-end developer, VueJS front-end
    - Technical team supervision
    - Migration to Kubernetes
    - CI/CD and testing implementation
    - Docker/docker-compose setup
    - SSO integration
    Ruby on Rails ruby Vue.js Docker Kubernetes API Server Administration PostgreSQL Redis
  • Neoweb
    Ruby on Rails Developer
    SOFTWARE PUBLISHING
    April 2019 - August 2021 (2 years and 5 months)
    Lille, France
    Ruby On Rails Developer within a digital agency in an agile team (SCRUM) to build web applications. Design, development, and maintenance of B2B and B2C web applications. Client relationship management and project management.

    Tasks:
    - Maintenance of a contract management and SSO application for an insurance company.
    - Creation of a professional networking project in the security field.
    - Maintenance of the agency's internal tools (Redmine, Keepass, Sentry, etc.).
    - Team management.
    - Analyze client needs, propose technical solutions, and estimate the required workload.
    Ruby on Rails Ruby API PostgreSQL Redis JavaScript Git HTML5 CSS3 GitHub SSO

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Education

  • Master's degree in Computer Science
    Epitech IT Lille
    2021
    Architecte Logiciel – Développeur d’applications

Skill set (27)

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