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Quentin ThomasQT

Quentin Thomas

Node.js | Nestjs Backend Developer

€600/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Quentin

Looking for a Node.js / NestJs developer?
Want to lay a solid technical foundation to scale your product with confidence?
You've come to the right place.

I am a software engineer with over 8 years of experience and a specialist in Node.js development.
I have worked in demanding regulated sectors — healthcare, asset management (Amundi), industry.
I have collaborated with companies such as Orisha Healthcare, Amundi, and Manitou.

I am capable of:
- Designing, developing, and maintaining features aligned with business needs
- Participating in the writing of detailed technical specifications
- Analyzing the impact of product design on IT technical architecture
- Developing the backend in Node.js
- Implementing relational databases like PostgreSQL
- Implementing NoSQL databases like MongoDB
- Implementing CI/CD
- Implementing software architecture like Clean Architecture, DDD
- Writing technical documentation
- Performing unit and integration tests to ensure code quality
- Participating in refactoring, continuous improvement, and code review contributions

Shall we discuss your project?
Contact me, I respond in under 1 hour.

--
nest, nest.js, nest js, nestjs react, nestjs backend, nestjs graphql, node js, nodejs, full stack node.js javascript, full-stack node.js, node.js fullstack, nodejs graphql, backend node, back end Node.js
  • French

    Native or bilingual

  • English

    Conversational

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

Experience

  • Sogeti, Parts of Capgemini
    Software Engineering Consultant
    DIGITAL AND IT
    January 2022 - September 2025 (3 years and 8 months)
    Nancy, France
    Sogeti is a digital services company, a brand of the Capgemini Group.

    I joined the company as a Software Engineering Consultant.

    Public sector - Docaposte Applicam
    I acted as Lead Developer to oversee the implementation of a SaaS platform for the regional services and devices of the Auvergne-Rhône-Alpes region.

    My responsibilities / tasks performed:
    - Code reviews
    - Technical supervision
    - Effort estimations
    - Writing technical specifications

    Skills: SQL Server, C#, ASP.NET, Jira, Scrum Method

    Asset Management - Amundi
    I participated in the creation of a B2B journey that allows for customized quotes while respecting current legislation.

    My responsibilities / tasks performed:
    - Participation in technical choices and directions
    - Effort estimations (planning and team sizing)
    - Feature development
    - Technical supervision
    - Code review

    Skills: React, Node.js, Golang, MongoDB, Docker, Microservices Architecture, GraphQL

    Industrial Handling Equipment - Manitou Group
    I participated in the evolution of a proprietary ERP for compliance with global and American markets.

    My responsibilities / tasks performed:
    - Feature development
    - Technical supervision (developer mentoring)
    - Code review

    Skills: .NET, Angular, Oracle, C#, Azure, Azure DevOps, SCRUM Method
    Industrial Metallurgy - Saint Gobain PAM
    I helped create a commercial solution to track a product from its delivery to its installation.

    My responsibilities / tasks performed:
    - Architectural and technical design
    - Feature development
    - Technical supervision (developer mentoring)
    - Code review
    - User training

    Skills: React, Node.js, Postgresql, PWA
    React.js Node.js MongoDB JavaScript Golang Developer
  • Orisha Healthcare
    Fullstack Web Developer
    HEALTH AND WELLNESS
    August 2020 - December 2021 (1 year and 4 months)
    Villers-lès-Nancy, France
    Orisha Healthcare is a software publisher for healthcare professionals. The company has about 50 employees nationwide.

    I joined the billing engine team to participate in its evolution according to current regulations.
    The team consisted of 5 people:
    - a manager,
    - a business analyst, and
    - two developers.

    My responsibilities were:
    - Development of desktop modules to ensure communication between the health insurance card reader / healthcare professional card and the application.
    - Frontend and backend interface development
    - Continuous integration of regulatory changes related to care pricing and reimbursement conditions.

    I contributed to:
    Technical and functional integration of the Shared Medical Record
    Financial compensation due to the departure of the largest client (~20% Annual Revenue)

    Technical context: ASP.NET, C#, Regulated SaaS, .NET, Agile Methods, Javascript, HTML, CSS, PostgreSQL, Oracle
    HTML/CSS PostgreSQL ASP.NET Regulated SaaS C#
  • Moobee Global Solution
    Web & Mobile Developer
    INTERNET OF THINGS (IOT)
    September 2019 - March 2020 (6 months)
    Pompey, France
    Moobee Global Solution is a service company specializing in the design of digital solutions.
    The structure has 4 employees.

    I joined their team to participate in the development of a home automation alert management application.
    The team consisted of 4 people:
    - the CEO, acting as project manager,
    - two developers, and
    - a sales representative.

    My responsibilities were:
    - Development of a React Native mobile application for real-time monitoring of sensor data (leak detection, fire, anomalies), integrating an intelligent alert system capable of automatically triggering a call to emergency services or a technician, or allowing the user to manage the incident manually via a list of defined service providers.
    - Creation of a web back-office for the administration and visualization of collected IoT metrics.
    - Development of a PHP/MySQL backend API for processing, analyzing, and storing sensor data.
    - Implementation of an architecture ensuring system availability and responsiveness to critical events.

    I contributed to:
    - The preparation and presentation of the product to investors as part of a fundraising round.

    Technical context: PHP, MySQL, JavaScript, HTML, CSS, React Native
    React Native PHP MySQL JavaScript REST APIs

Recommendations

Lilian AlvarezLA
Chloé SoquetCS
BT
+1
Lilian Alvarez and 3 other people have recommended Quentin

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Education

  • Professional Bachelor's Degree in Software Engineering (RIL)
    CESI Alternance
    2019
    Licence professionnelle Responsable en ingénierie logicielle (RIL)
  • Higher National Diploma in Digital Sciences, Computer Science and Networks Option (SNIR)
    Lycée Henri Loritz
    2016
    Brevet de technicien supérieur Sciences du N Numériques options Informatiques et Réseaux (SNIR)

Skill set

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