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Kévin SénéchalKS

Kévin Sénéchal

Senior Web Developer – NestJS Node.js Next.js

€500/day
1 project
Lille, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Kévin

Senior Web Developer with over 13 years of experience, I design and evolve web applications, specializing in API development in NestJS / Node.js and implementing automation (scraping, email processing, etc.).

I work on projects of all sizes, from product launch to evolving existing applications, always aiming to deliver concrete value: clear code, solutions adapted to needs, and reliable deployment.

I can also work on the front-end (React / Next.js) when necessary, particularly to effectively connect the API to the product.

I can also manage the deployment/infrastructure part if needed.

Key skills: web development, NestJS, Node.js, TypeScript, API, back-end, React, Next.js, AWS, Docker, Kubernetes, CI/CD.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Ecris-moi
    Senior NestJS Developer / Technical Lead
    TELECOMMUNICATIONS
    November 2024 - December 2025 (1 year and 1 month)
    Seclin, France
    Écris-moi is a dating platform that offers an alternative to traditional applications, focusing on written correspondence (online and by postal mail) to foster more authentic and thoughtful exchanges between users.

    In this context, I am involved in the design, development, and operation of the platform's back-end.

    Main contributions:
    - Implementation of the back-end technical stack (Nx monorepo)
    - Development of APIs and workers in NestJS
    - Implementation of a message-oriented architecture (RabbitMQ)
    - Design and maintenance of AWS infrastructure (EKS, Terraform)
    - Implementation of CI/CD (GitHub Actions, ArgoCD)
    - Docker image optimization
    - Coordination of external developers (frontend and DevOps)
    - Maintenance and occasional evolutions of the Next.js front-end

    Keywords: NestJS, Node.js, TypeScript, Nx, RabbitMQ, AWS, EKS, Terraform, Docker, Kubernetes, CI/CD, Next.js, React
    NestJs Next.js Kubernetes Typescript
  • Manda
    Senior NestJS / Node.js Developer / Technical Lead
    REAL ESTATE
    November 2021 - November 2024 (3 years)
    Paris, France
    Manda is a French digital real estate agency offering comprehensive services in rentals, property management, co-ownership management, real estate sales, and renovation, with a strong product and digital focus (online tools, applications, dematerialized processes).

    I assisted the company in structuring and evolving its technical platform, with an objective of reliability, maintainability, and preparation for growth.

    Main contributions:
    - Taking over existing systems and reducing technical debt
    - Securing the codebase and development practices
    - Defining and implementing the back-end architecture
    - Refactoring internal applications: Node.js → NestJS and React Admin → Next.js
    - Developing new business features
    - Setting up and supporting the technical team (recruitment, training, mentoring)

    Keywords: NestJS, Node.js, TypeScript, React, Next.js, React Admin, back-end, software architecture, technical debt, SaaS platform
    Node.js React.js React Admin NestJs IT Strategy
  • BAW
    CTO and NodeJs Developer
    E-COMMERCE
    January 2021 - November 2024 (3 years and 10 months)
    Villeneuve-d'Ascq, France
    Hotmer is a long-standing player in gliding and water sports, combining a national e-commerce platform and a network of physical stores in France (Lille, Calais, Rennes, Dinard, Almanarre, etc.).

    I assisted the company in refactoring its information system, with a strong focus on automating and synchronizing supplier data.

    Main contributions:
    - Consulting and support on IS architecture
    - Implementation of automated processes for retrieving supplier stocks (web scraping, email scraping, Excel scraping, CSV, FTP...)
    - Development in Node.js / MongoDB
    - Nightly processing via AWS Lambda
    - Generation of EDI files and automated FTP upload
    - Serverless deployment
    - Implementation of Infrastructure as Code with Terraform

    Keywords: Node.js, AWS Lambda, MongoDB, Serverless, Terraform, automation, back-end, e-commerce
    Node.js Web Scraping Terraform AWS Lambda Data Scraping

Reviews

5.0

Out of 1 rating

L

Laurent

BAW

Reviewed on 2/9/2024

We work regularly with Kevin. I recommend him. He takes the necessary perspective to understand your needs and meet them.

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Education

  • Master 2 "Software Engineering and Architecture"
    University of Lille 1
    2012

Skill set

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