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Fatou C.FC

Fatou C.

QA Engineer · AI Reliability · TypeScript

€400/day
Paris, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Fatou

The build is fast. Production, on the other hand, is unforgiving.
Lovable, Bolt, Cursor, Windsurf, Claude Code — these tools generate code in minutes. What they don't generate: tests, staging architecture, production error handling.
That's where I come in.
With experience in Quality Engineering at Believe, I am the AI-era QA Engineer: I audit, test, and secure the code generated by AI before it goes into production.
Whether you're a founder who built your MVP with Lovable, or a dev team shipping with Cursor — the problem is the same. Code ships fast. Reliability, however, is built.

My Method — AI Plumbing:
✅ Automatic smoke tests on your repo (Playwright / Cypress)
✅ Data validation with TypeScript + Zod — zero hallucinations in the database
✅ CI/CD + staging environment — your pushes tested before production
✅ Supabase security audit: RLS, secrets, multi-tenant isolation
✅ Quality Score /100 with detailed report on bugs, architecture, security

Services & Expertise:
🔹 QA & Automated Tests: Smoke tests, unit tests, non-regression tests on AI-generated code
🔹 AI Reliability: Complex JSON schema validation, hallucination filtering, LLM output security with Zod + TypeScript
🔹 CI/CD & Staging: GitHub Actions, staging/production environments, passing test badges
🔹 Supabase Backend Architecture: RLS, multi-tenancy, data isolation, security audit
🔹 Industrial n8n Automations: Advanced error handling, diagnostic logs, resilient workflows

Quality Commitment:
Coming from a QA culture, I deliver every project with non-regression tests.
"I build solid — or I prove that what exists won't hold."
  • English

    Fluent

  • Spanish

    Fluent

  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • AI Automation & Reliability Engineer
    SaaS Multi-Tenant Application - Statement Management
    SOFTWARE PUBLISHING
    November 2025 - January 2026 (2 months)
    Paris, France
    Development of a multi-tenant SaaS application for statement management with automated workflows.

    Features developed:
    - Multi-tenant architecture with data isolation per organization
    - Multi-role authentication (administrator, user, client)
    - Automated validation and notification workflows (n8n)
    - Real-time dashboard
    - Automatic emails
    - Secure REST APIs with RLS (Row Level Security)

    Application intended for interim agencies for managing timesheets.

    Stack: React, TypeScript, Tailwind CSS, Supabase (Auth + PostgreSQL + RLS), n8n, Vercel
    React Supabase TailwindCSS TypeScript n8n
  • Indépendant / R&D Personnelle
    Automation Architect: Intelligent & Reliable CV Sorting System
    HUMAN RESOURCES
    October 2025 - October 2025
    Paris, France
    Development of an end-to-end solution for multi-profile recruitment automation (Reception, General Services, Administrative).

    Technical challenges overcome:

    Data Reliability: Implementation of a validation layer via Zod & TypeScript to filter AI hallucinations. 100% of data injected into Airtable is guaranteed to be compliant (types, scores, enumerations).

    Multi-Scoring: Simultaneous evaluation of a candidate on 4 different job descriptions with intelligent skill weighting.

    OCR Pipeline: Integration of Mistral AI for text extraction from complex or scanned documents.

    Auto-Correction: Implementation of a JSON response cleaning system to ensure n8n workflow continuity.

    Result:
    Shift from manual processing (8h/day) to automated processing (30 min), a 93% productivity gain, without sacrificing analysis accuracy.

    Skills:

    n8n
    OpenAI (GPT-4)
    Zod
    TypeScript
    Airtable
    Data Validation
    OCR (Mistral AI)
    Prompt Engineering
    n8n Airtable Zod Data Validation TypeScript
  • Reliability Lab
    Creation of an LLM Reliability Framework (Open Source)
    February 2026 - February 2026
    Saint-Denis, France
    Development of a technical "Guardrail" to secure outputs from language models (LLMs).

    Implementation of strict validation schemas with Zod.

    Management of type coercion to stabilize exchanges between n8n and OpenAI.

    Reduction of workflow failure rate due to AI hallucinations from almost 100% to 0%.
    Stack: TypeScript, Zod, Vitest, OpenAI API.
    Zod Data Validation Unit Testing Software Architecture Jest

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Education

  • Web Application Designer and Developer - RNCP Level 6 Title
    Ada Tech School
    2025
    ***Savoir-faire*** Les notions techniques et les outils d’un·e concepteur·rice logiciel Systèmes & réseaux APIs & Structures d’exécution Langage de programmation Culture du test Algorithmie Architecture logiciel et bases de données Paradigmes de programmation ***Savoir-être*** Les bonnes pratiques pour écrire du code collectivement en entreprise, les réflexes et le comportement d'un·e développeur·se professionnel·le Collaboration & Rétrospective Veille technique & culture informatique Clean code & Transmissibilité Roadmap & Synchronisation Code review & pair programming
  • MBA International Business Trade Bac+5
    Institut Supérieur de Gestion - ISG
    2017
    1st term Applied computing B 2 B marketing Business Cases Business English Career management Export contracts Geopolitics and Emerging markets Energy and raw materials Incoterms Intelligence économique International business 2nd Term International business law International finance International project management International retail Jeu d’entreprise Macroéconomie Multicultural team management Negociation of contracts Risk management Stratégie douanière Supply chain management

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