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Luis MendesLM

Luis Mendes

Full Stack Engineer

€350/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Luis

Full-stack engineer — I transform a business need into a production-ready product.

Formerly a market finance analyst (BNP Paribas, Itaú), I switched to the other side: today I design and code the applications I wish I had.
This dual background — business and technical — means I don't just deliver code, but a solution that truly addresses the problem.

What I do specifically:
• Custom business applications: CRM, inventory management, back-offices, process automation.
• SaaS products from A to Z: from design to production (payments, authentication, client area).
• Applied AI: LLM integration, content generation, speech synthesis, automated curation — not hype, but time-saving use cases.
• APIs & integrations to connect your tools.
My stack: FastAPI · Next.js/React · PostgreSQL · Docker · Celery, and OpenAI/Stripe/Cloudinary APIs daily.

I work directly with decision-makers, I move fast, and I prioritize quality (tests, docs, maintainable code). Trilingual French / Portuguese / English.

Have a project in mind? Let's talk.
  • French

    Native or bilingual

  • English

    Fluent

  • Portuguese

    Native or bilingual

  • Spanish

    Conversational

Can work on-site
Paris (up to 30km)

Experience

  • Clair antislash
    Full Stack Engineer
    October 2025 - Today (10 months)
    Paris, France
    Co-founder and product engineer of Clair, a media outlet on the practical uses of AI in marketing and communication.
    I designed and developed the entire platform, from back-end to front-end, up to production deployment:
    • Complete SaaS product: Stripe subscriptions (payments, portal, webhooks), paywall, member area, magic-link authentication.
    • Custom editorial CMS: block-based writing, AI-assisted content and summary generation, versioning.
    • Applied AI: speech synthesis (automatic podcast of articles), content curation and enrichment, SEO.
    • Stack: FastAPI, Next.js/React, PostgreSQL, Celery, Docker, Cloudinary, continuous deployment on Railway.
    • Quality culture: 300+ automated tests, CI, downtime-free database migrations.
    Python AI Integration Fast API Typescript
  • Freelance
    Software Engineer
    TECH
    August 2024 - Today (2 years)
    • Design and delivery of custom business applications (CRM, stock management) for SMEs.
    • Fullstack development (FastAPI, React, PostgreSQL, Docker), API integration, and DevOps practices.
    • Built an automated newsletter platform with AI-powered content curation, web scraping, and email marketing integration.
    • Led digital transformation and collaborated closely with business stakeholders.
    Python SQL React.js Docker API
  • ITAU
    RPA ANALYST
    BANKING AND INSURANCE
    January 2022 - January 2024 (2 years)
    Lisbonne, Portugal
    Orchestrated end-to-end automation of key processes leveraging SQL, Power Automate, Python, significantly enhancing workflow efficiencies across various organizational domains resulting in substantial savings equivalent to several Full-Time Employees.
    Developed and implemented Power BI dashboards for activity monitoring, providing real-time insights and enhancing decision-making processes across various teams.
    Python Typescript SQL Power Automate Microsoft Power BI

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Education

  • Bachelor in Economics
    Universite Catholique de Louvain
    2019
  • Bachelor in Computer Science
    University of London
    2022

Skill set

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