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Stephane NachezSN

Stephane Nachez

Freelance CTO · Agency Systems Architect

€630/day
19 projects
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Stephane

Are you developing an ambitious SaaS, but technology is slowing down your growth?

Is your stack getting complicated,technical debt slowing down your teams, or are you preparing for a funding round, scaling up, or a sale?

That's precisely where I come in.


Fractional CTO, software architect, and full-stack lead developer, I support startups, scale-ups, and SMEs that needa profile capable of taking technical directionwhile remaining hands-on with the product.

For over 20 years, I've been involved inproduct scoping, architecture, scalability, technical debt, team management, and generative AI integration.

Key Achievement

I designed and managed a high-traffic B2B2C platform (peaking at several million messages per hour) for major French brands, which was later sold for 12 million euros to an international group.

Situations where I am most useful

• Product Launch or Redesign
I establish a solid and scalable architecture from the outset.

• Technical Debt Hindering Growth
I identify critical bottlenecks and regain traction.

• Need for a Part-Time CTO
I take technical lead (1 to 3 days/week).

• Integrating AI into Your Product
AI Agents, multi-agent systems, RAG, OpenAI, Claude, multimodal AI.

Stack

Laravel · PHP · Python · React · Vue.js · TypeScript · PostgreSQL · MySQL · Neo4j · Docker · Linux

Approach

Direct, pragmatic, and results-oriented.
Working independently or integrated into an existing team.

Describe your situation in a few lines — I'll respond quickly with a clear understanding of how I can help.

Initial discussions are non-binding.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Centrale autocar
    Technical Manager ERP / Lead Dev
    TRANSPORTATION
    January 2024 - March 2026 (2 years and 2 months)
    Paris, France
    Right-hand man to the CEO, supporting the evolution of thebusiness ERP,automation, andbusiness intelligence(stats, reporting, optimization).
    IT Project Management ERP System Customization AI Automation Business Intelligence
  • ActuIA
    Founder
    November 2019 - Today (6 years and 9 months)
    AI Watch, 20,000+ B2B newsletter subscribers,leading French source for professional information on artificial intelligence.
    Artificial Intelligence Business Intelligence
  • ABA Online
    Malt logoOn Malt
    CTO
    February 2020 - February 2026 (6 years)
    CTO, supervising developers and managing the evolution of an online training platform/CEO's right-hand man.
    CTO as a Service

Reviews

5.0

Out of 17 ratings

R

Ralph

RWINGS SAS

Reviewed on 1/25/2023

Very good service.
Y

Yannick

naviwatt

Reviewed on 12/15/2022

Stéphane was very responsive, very serious in his work. I recommend him without hesitation!

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Education

  • Master in Software and Data Engineering
    Aix-Marseille University
    2003

Certifications

Skill set

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