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Sébastien DoubeySD

Sébastien Doubey

Fullstack Developer - Java / Spring / Angular

€500/day
Angers, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sébastien

Fullstack Developer with expertise in Spring Boot, Angular 2+, and several Android applications developed in the past.

I have worked in many startups, starting with J2ME/Blackberry development, then I moved into Android mobile and backend Java development, first with Tomcat, Jersey, jOOQ, then I specialized in web development with Angular 2+ and backend with Spring Boot + GraphQL to develop APIs.

For infrastructure, I started with OVH and for over 5 years I have been using Amazon Web Services tools (ElasticBeanstalk, EC2, API Gateway, Lambda, RDS, SQS, SNS, S3, Cloudfront, Timestream, Athena) to set up a microservices architecture.

To make applications reliable, I implement integration tests using Cucumber for the backend and Cypress for the frontend.

To facilitate application deployment, I used Bitbucket's Pipeline service, then moved to Jetbrains Space Jobs.

For project management, I used Jira and Confluence, then moved to Jetbrains Space. I use Bitbucket, Github, Jetbrains Space for GIT repositories.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Streeme.io
    Lead Tech
    EDUCATION AND E-LEARNING
    October 2019 - Today (6 years and 8 months)
    Paris, France
    Streeme.io is a platform that allows job seekers to complete questionnaires and track their appointments through networking modules. They are also followed by a coach who himself feeds the platform through personalized questionnaires and discussions around the provided answers.

    - Development of several Lambdas, one for CV generation (using JsonResume standard), one for PDF generation from questionnaire responses.

    - Development of two interfaces with Angular 9, one for coaches and coachees, and one for clients (schools, alumni) and administrators, all powered by a GraphQL API.

    - Development of a backend in microservices (Spring Boot, SNS, SQS), presenting a GraphQL API, there are 3 microservices, one for user management (coachee, coach, organization, admin), one for questionnaire management (forms, charts, responses), one for message management (notifications, emails, SMS, websocket pushes).
    Spring Boot Hibernate Amazon Web Services Angular Microservices Amazon SQS DevOps Amazon RDS TailwindCSS RxJS DDD Hexagonal Architecture CQRS PostgreSQL Maven
  • Renovation Man
    Lead Tech
    CIVIL ENGINEERING
    March 2017 - September 2019 (2 years and 7 months)
    Paris, France
    RenovationMan is a platform that helps individuals with their renovation projects by allowing them to get quotes, make online payments even for large sums, sign documents electronically, and track the project using digital tools.

    - Development of a microservices backend (Spring Boot, SNS, SQS), including a user management service (Client, Artisan, Admin, Partner), a messaging service (SMS, Emails, Notifications), a construction site management service, a quote management service (version generation, multi-room, invoices, etc.).

    - Development of several interfaces with Angular 2+, client (for tracking and entering renovation information via a dynamic questionnaire), artisan (tracking construction sites, proposing new construction sites, tracking payments), admin (managing invoices and pending payments, entering partner data).

    - Implementation of continuous integration tools (Bitbucket pipeline), implementation of DevOps methodologies (Reading "Implementing DevOps - 2nd ed: How to Evolve to an Agile IT Department").
    Spring Boot Hibernate Amazon Web Services Angular Microservices Amazon SQS DevOps Amazon RDS
  • calenDoc
    Lead Tech
    MEDICAL
    January 2016 - Today (10 years and 5 months)
    Saumur, France
    Development of a Backbone.js calendar to manage appointments for medical staff (Doctor, Nurse, EHPAD, Medical Secretary) with VoIP call management (Asterisk). In 2018, the interfaces were migrated to Angular 6 and are regularly maintained to implement new features and integrate new clients (Real estate agencies, opticians, etc.).

    - Development from scratch of a calendar on Angular 2+ that relies on PrimeNG, Akita store, RxJS, Luxon, Tailwind CSS libraries.

    - Development of a questionnaire engine to route patients to the right practitioner (Angular + Spring Boot + GraphQL).

    - Implementation of video conferencing with OpenVidu (AWS CloudFormation for the backend).
    Amazon Web Services Angular Maven Cypress CSS3 Domain Driven Design Git GraphQL HTML5 Java Kotlin Microservices RxJS SASS Spring Boot TailwindCSS

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Education

  • Computer and Network Engineer
    ISEP
    2007
    Ingénieur spécialisé informatique, réseaux, télécoms, diplômé à l'ISEP en 2007, école située à Paris 06 reconnue par l'état et la CTI.

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