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Félix BayartFB

Félix Bayart

Full Stack Developer – CTO – Claude Code Expert

€800/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Félix

CTO as a Service— for startups and small businesses that need a senior profile at a controlled cost: tech strategy, architecture, product scoping, recruitment. A shared CTO, on-demand.

Lead Fullstack— for existing teams that want a senior developer to lead complex projects, structure practices, and unblock a struggling product.

⚡ My Difference: Production-Quality AI Code, Not Prototypes
Everyone knows how to prompt an LLM. The trap is that an agent always takes the shortest path: it skips scoping, testing, and review – the exact steps that make software reliable.

🤖 How I Work with AI?
  • Spec before code: we define the 'what' before the 'how'.
  • Tests = Proof: TDD, not 'it seems to work'.
  • Systematic Review: every diff passes the 'would a staff engineer approve this?' filter.
  • Future-Proof Architecture: choices we can stand by in six months, not just at commit.
🏆 Result: AI Velocity, Without the Usual Debt.

📈 My Background:12+ years supporting startups, SMEs, and large corporations with their digital products. The technical partner who understands business stakes and challenges choices before they become costly.

🌱 Project with Social or Environmental Impact? Dedicated Rate — Let's talk.
  • Italian

    Native or bilingual

  • English

    Fluent

  • French

    Native or bilingual

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

Experience

  • Wexeor
    CTO as a service
    October 2025 - Today (8 months)
    Design and development of an innovative real estate asset management tool.
    Next.js, PostgreSQL, Vercel
    Next.js PostgreSQL AWS Cloud Authentication CI/CD
  • Sline
    Lead Front Developer
    SOFTWARE PUBLISHING
    February 2024 - March 2025 (1 year and 1 month)
    Design and development of three responsive applications for a rental with option-to-buy solution.
    - Acquisition funnel
    - Administration dashboard
    - User account
    Node.js React.js Authentication DevOps Retool
  • Artefact
    Lead Fullstack Developer
    May 2022 - November 2023 (1 year and 6 months)
    Development of custom applications for the marketing department of a large international group, enabling the visualization and creation of audience segments for retargeting purposes.
    Recruitment of front-end reinforcements for the team.
    In parallel, design of custom widgets integrated into Looker.
    Looker Studio Data Visualization React.js Python UI/UX Design

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Education

  • Master of Science – Internet Engineering
    UCL
    2015
  • Generalist Engineer Diploma in Telecommunications
    IMT Atlantique (Ex Telecom Bretagne)
    2014

Skill set

Categories