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Mickael MaffiaMM

Mickael Maffia

✅ Lead Fullstack Symfony / React • SaaS & AI

€450/day
2 projects
Paris, FR
8-15 years

Average response time: 24 hours

Freelancer profile translated to English.
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About Mickael

Lead Fullstack who delivers end-to-end SaaS products

Have a product idea, an MVP to launch, or an existing SaaS to take to the next level? I step in as senior technical support capable of handling a product from A to Z: design, development, deployment, and AI integration when it brings real value.

8 years of fullstack experience, 2 years as a freelancer after a Lead Tech position on an e-commerce redesign. I design and deliver alone, or I manage a small team. No unnecessary technical debt, no empty talk.

My specialties:
- Backend: Symfony, API Platform, PHP 8, clean architecture, GraphQL,
micro-services, Behat tests
- Frontend: React, React Native, Next.js, TypeScript, micro-frontend,
SEO (3rd Google position in 3 months on a project)
- AI: LLM integration (Claude, OpenAI), conversational agents,
real-time transcription, workflow automation
- DevOps: Docker, Dokploy, Grafana, monitoring, GitLab CI/CD

I am currently building Revelyum, a technical interview platform powered by LLM (Claude, Deepgram, LiveKit). MVP in production, I know API costs, real-time transcription pitfalls, and how to keep an AI product in production without breaking the budget.

Previously, I launched PatataFamily (React Native meal planning app + Symfony API + automated landing page) independently, and managed e-commerce redesigns with Sylius (up to 3 developers under my responsibility).

I work fully remote from the Ain region. My clients contact me for 3 reasons:
1. Launch an MVP SaaS from scratch with a modern stack and well-thought-out AI
2. Take over an existing product and redesign it without disrupting the business
3. Integrate AI into a product that doesn't have it yet

If one of these 3 cases resonates with you, let's talk.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Revelyum
    Lead Fullstack: AI-powered Technical Interview SaaS
    SOFTWARE PUBLISHING
    March 2026 - Today (5 months)
    Paris, France
    → Mission Objective:
    Design and develop Revelyum, an AI-powered SaaS technical interview platform for tech recruitment agencies, with full autonomy from architecture to deployment.

    → Achievements:
    Fullstack SaaS product architecture and development completed solo in 2 months (PHP backend, Hotwire frontend, Python worker, Docker infra), including JWT authentication, Stripe billing (one-time, subscriptions, Customer Portal, signed webhooks), and a differentiating dual reporting model (client technical and recruiter soft skills). Technical MVP delivered with 351 commits, 62 test files, and 31 migrations.

    Design of a multi-provider LLM abstraction layer (Anthropic Claude Haiku 4.5 and Sonnet 4.5, OpenAI, Ollama) with context-based configurable routing via a custom LlmProviderManager service, ensuring flexibility, cost control, and product resilience.

    Real-time pipeline orchestrated combining LiveKit (WebRTC rooms and livekit-agents 1.5 Python agent), Deepgram Nova-3 (streaming transcription), Anthropic (adaptive question generation), and Mercure SSE (real-time broadcast to the browser).

    Symfony 7.3 / API Platform 4.1 backend on FrankenPHP in worker mode, PostgreSQL 16 / Doctrine ORM 3, Symfony Messenger via Doctrine transport, business service-oriented architecture with Factory and Strategy patterns (4 report generators: technical, recruiter, training, coaching simulation).

    Hotwire frontend (Twig, Stimulus, Turbo, AssetMapper) coupled with standalone Tailwind CSS v4, without Node or npm, for a lightweight bundle and simple workflow.

    → Technical Stack:
    Symfony 7.3, API Platform, PHP 8.3, FrankenPHP, Symfony AI Bundle, Anthropic (Claude Haiku/Sonnet 4.5), Deepgram Nova-3, LiveKit, Mercure, PostgreSQL 16, Doctrine, Twig, Stimulus, Turbo, Tailwind v4, Stripe, AWS S3, Docker, PHPUnit, PHPStan, Panther
    Symfony Artificial Intelligence AI Agent SaaS Claude Code
  • PatataFamily
    Founder | Symfony & React Native Developer
    ENTERTAINMENT AND LEISURE
    November 2025 - Today (9 months)
    Paris, France
    → Mission Objective:
    Develop and deploy PatataFamily end-to-end (**API**,React Nativeapp, and landing page), with a scalable architecture, effective marketing automation, and DevOps monitoring focused on performance and AI.

    → Achievements:
    Developed a high-performanceSymfonylanding page coupled with an automated email sequence (Resend API, Symfony **Scheduler**), **increasing visibility**, **user engagement**, and **conversion rates**.

    Developed theSymfony REST APIwith feature-based architecture (**clean architecture**), integrating AI features, improving maintainability, perceived quality, and product evolution speed.

    Simultaneously created theReact Nativeweb and mobile application, organized by modules, deployed viaDocker& Dokploy withGrafana&Umamimonitoring, ensuring **performance, reliability, and operational time savings**.

    → Technical Stack:
    Symfony, React Native, REST API, Docker, Dokploy, Grafana, Umami, Resend API, AI
    PHP Symfony Developer Symfony Backend Developer Docker DevOps React Native
  • Feedback now
    Fullstack Developer | React | NestJs
    SOFTWARE PUBLISHING
    June 2025 - October 2025 (4 months)
    New York, United States
    → Mission Objective:
    Strengthen an ongoing redesign team and ensure coherent, clean development aligned with best practices in React and NestJs.

    → Achievements:
    Rapid integration into an already launched project, strictly adhering toReact/NestJsbest practices, ensuring **consistency**, **quality**, and **performance maintenance**.

    CompleteDockerizationof the application to improveproductivity**, provide a unified development environment, and ensure technical stability across the **React+NestJsecosystem.

    Rigorous ticket tracking and adaptation to project standards, enhancing team fluidity, code continuity, and delivery **reliability**.

    → Technical Stack:
    React, NestJs, Docker, TypeScript, Git
    NestJs Docker React.js TypeScript Git

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Education

  • Master's Degree in Computer Science
    University of Burgundy
    2017

Certifications

Skill set

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