You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Olivier GirodinOG

Olivier Girodin

[CII Approved] - TypeScript/Python - RAG/LLM

€600/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Olivier

Are you leading a small or medium-sized business and have a tech project that cannot afford to fail?
I work with SMEs (10–250 employees) executives and CTOs who need to modernize their stack or integrate AI – without sacrificing their budget or time-to-market.
What I do specifically:
🔹 Legacy Modernization — migration and decoupling of monoliths to a microservices architecture (Node.js / NestJS / Angular). Reference: 864,000 Ingenico payment terminals made reliable.
🔹 AI & LLM Integration — complete RAG pipeline with fine-tuning of embedding models and LLMs on your business data (Python, QLoRA, Qdrant, vLLM). 100% on-premise if your data is sensitive. Measured result: +40% accuracy compared to a generalist model.
🔹 Fullstack Development — Angular, TypeScript, Node.js, NestJS, Docker. Hexagonal architecture, DDD, CI/CD. Typed, tested, documented code.
💡 Exclusive financial advantage — CII Mesh Box Approval n°29987181
My services are eligible for the Innovation Tax Credit (Article 244 quater B of the CGI): 20% of your expenses recovered, up to €80,000/year.
To be eligible, your project must meet the 4 ministerial criteria:
✅ Novelty — the product or feature does not exist in this form on the market
✅ Performance Improvement — measurable gain compared to the existing (accuracy, speed, reliability)
✅ Ergonomics Improvement — substantially improved user experience
✅ Technological Advancement — use of recent technologies or novel combinations
Mesh Box prepares the technical justification file and coordinates everything with your accounting firm. A €40k mission costs you €32k net. Retroactivity possible over 3 years.
📅 cal.mesh-box.fr/ogirodin/30min — Response within 24h
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km), Châteauroux (up to 50km), Toulouse (up to 50km), Bordeaux (up to 50km), Lyon (up to 50km)

Experience

  • Mesh Box
    CEO & Fullstack Lead Architect (Angular / Node.js)
    BANKING AND INSURANCE
    September 2023 - Today (2 years and 11 months)
    Paris, France
    As the founder and Lead Architect of Mesh Box, I transform legacy and complex applications into competitive assets for businesses (banking, automotive, telecommunications).

    Common problem: Aging systems hinder growth, generate costly bugs, or block AI integration.

    Solution: I intervene in 'rescue' or modernization mode, alone or with my network of experts: rapid audits, scalable overhauls, AI integrations without downtime.

    🚀 Examples of concrete impacts:

    Legacy Modernization: Migrations from AngularJS to modern Angular → maintainable code, +50% average performance, zero production interruptions.

    Node.js/NestJS SLA Rescue: Fix critical bugs, optimize scalability → reduced downtimes and smooth maintenance on high-availability systems.

    AI/RAG Integration: Intelligent search engines connected to business data (ElasticSearch, etc.) → process automation, accelerated decisions, and rapid ROI.

    ROI-First Approach: Priority on sustainable, tested code (CI/CD), aligned with business value – no over-engineering.

    Discover detailed case studies at https://www.mesh-box.fr
    Available as an independent contractor or through a staffing structure for large accounts. Contact me to unblock your project!
    Software Architecture Node.js Angular TypeScript Expert NestJs
  • Ingenico
    Senior Fullstack Developer (Angular / Node.js) - Critical Environment
    BANKING AND INSURANCE
    April 2018 - Today (8 years and 4 months)
    Paris, France
    At Ingenico (a global leader in payment solutions), I worked as a Senior Fullstack Developer in an ultra-demanding environment:

    high availability, maximum banking security, millions of transactions/day.

    Main challenge: Managing critical transactional flows with zero tolerance for error, while maintaining responsive interfaces for internal teams and partners.

    Solution implemented:
    Angular/TypeScript + RxJS frontends for highly responsive transactional monitoring dashboards and terminal fleet management.

    Robust Node.js backends + secure API integrations compliant with PCI-DSS and banking standards.

    Implementation of CI/CD pipelines, unit/integration tests, systematic code reviews.

    Concrete results:

    Significant reduction in downtimes and critical incidents.
    Improved application scalability and maintainability.
    Smoother interfaces for operators → increased team productivity.

    This nearly 8-year mission allowed me to master secure and high-performance web architectures in a large enterprise context – skills directly transferable to your critical projects (security, scalability, zero downtime).
    Node.js Angular TypeScript Expert RxJS NestJs
  • Digital No Limit
    Symfony Developer
    February 2018 - April 2018 (2 months)
    Persan, France
    At Digital No Limit, within a team of 12, I contributed to the redesign of a web application for a mutual insurance company and the development of the company's skeleton bundle.

    Main challenge: Need for secure integrations and reusable features to accelerate future developments.

    Solutions provided:

    Implementation of secure authentication via SAML between the application and the client server.
    Creation of a reusable Symfony bundle for multiple file and image uploads across projects.
    Use of GitLab + GitLab CI for versioning, ticketing, and automated testing.

    Results:

    Secure communication compliant with client requirements.
    Scalable and ready-to-use upload component for the team.
    Smoother and more reliable development process.

    Technologies: Symfony 3/4, PHP, MySQL, JavaScript/jQuery, SAML, GitLab, Docker.
    This short assignment strengthened my backend PHP and secure integration skills – a solid foundation for my subsequent Node.js/Angular projects.

Recommendations

Be the first to recommend Olivier

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • RILA - Software Engineering Manager by Apprenticeship
    CCI - Indre
    2008
  • Hexagonal Architecture
    Udemy
    2024
    https://www.udemy.com/certificate/UC-062f2796-eff6-4296-bb93-8fa0e8edcf77/

Certifications

Skill set

Categories