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

Clément Baumann

CTO/Tech lead for growing startups

€555/day
2 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Clément

You're launching your company, your product is taking off, and you need someone to take charge of the tech. Not just another developer, not an agency. Someone who takes responsibility.

That's what I've been doing for almost 10 years. A graduate of Epitech, working as a freelancer and entrepreneur on the side. I've had my own companies (EdTech, B2B) and from that, I've drawn a simple conviction: good tech without a good product is useless.

Mobile apps, web apps, backend, cloud infrastructure, scaling, architecture choices. You entrust me with the technology, I'll take care of it, and when you hire internally, I'll know how to hand over properly.

The arrival of Claude Code changes the game: we're shipping products in a few weeks instead of months. But without expertise behind it, you accumulate technical debt at the same rate. My job is to leverage these tools without mortgaging the future.

I also have a solid network of freelancers I've worked with before (product, design, data, growth). When the need goes beyond tech, I can mobilize a team in a few days.

If you're looking for this profile, write to me. I reply quickly.
  • English

    Fluent

  • French

    Native or bilingual

  • German

    Basic

Can work on-site
Paris (up to 10km)

Experience

  • Andy Studio
    Lead Developer
    TECH
    June 2025 - Today (1 year)
    Full-stack engineer at Andy Studio, leading front-end, back-end, infrastructure, and cloud initiatives.

    My scope is broad, covering the entire chain:
    - Frontend (webapp): payment flows (A/B testing, PSP integration), booking and confirmation journeys, multi-brand support, concierge load balancing, taxi/mobility flows, Amplitude analytics infrastructure, and A/B testing.
    - Backend: order lifecycle, communication systems (refactoring to domain-oriented templates, email/SMS), SMS provider integrations, AWS infrastructure (Amplify, Location Service, CloudWatch monitoring, secrets management), lambda hardening.
    - Cross-functional: multi-region operations (FR + US/CA), feature flag and A/B rollout management, infrastructure-as-code, incident and QA fixes.

    I operate as a senior IC, delivering end-to-end features into production—from infrastructure and backend to frontend UX and experimentation—rather than a specialist confined to a single layer.
    Amazon Web Services (AWS) Fullstack DevOps infra-as-code Next.js
  • MaBible
    FullStack Developer
    March 2025 - June 2025 (3 months)
    As a FullStack developer at mabible, my mission was to strengthen the existing team and implement best practices to improve stability and development velocity.
    Upon joining, we introduced the use of Cursor and various MCPs and AI tools that were missing from the organization's workflows.
    Furthermore, I contributed my expertise in team organization and data model architecture.
  • Uway
    FullStack Developer
    January 2025 - March 2025 (2 months)
    I created an online professional testing platform for UWay using Next.js 15, deployed on AWS with Amplify.

Recommendations

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

  • Expert in Information Technology
    Epitech Paris
    2021
    Développement (C, C++, Haskell, Python, JavaScript, TypeScript, ...) DevOps (Gitlab, Kubernetes, Docker, ...)

Skill set

Categories