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Valentin MascarenhasVM

Valentin Mascarenhas

Web Developer | Laravel | React | PHP

€690/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Valentin

Senior Web Developer | Build from scratch | Laravel / PHP

Launching a web product or a business tool and want to start with solid technical foundations, without accumulating debt from the very first versions?

I step in to design and develop web applications from scratch, with a clear architecture, maintainable code, and a foundation designed to evolve over time.

With over 13 years of experience, I have worked with both startups and SMEs, on projects with significant technical and business challenges.

This diversity allows me to quickly understand your constraints, make the right technical choices from the start, and deliver a reliable product aligned with your business objectives.

Projects I regularly work on:
- Web applications developed from scratch
- SaaS products (early-stage or structuring phase)
- Custom business tools for SMEs
- Dashboards and management tools
- Technical redesign and architectural overhaul

🧠 Approach
My approach is product-oriented: clear scoping, informed technical decisions, clean and documented code, for a stable, performant, and scalable product.

🛠️ Main Stack
Laravel, Symfony, Node.js, React, Vue.js
MySQL, PostgreSQL, MongoDB

I often get involved when a project owner wants to avoid having to redo their product after a few months.

Contact me for an initial discussion and to see how I can support you from idea to production.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km)

Experience

  • SAFRAN
    Tech Lead
    February 2026 - June 2026 (4 months)
    Development and evolution of an internal tool in an environment subject to security and confidentiality constraints.

    Implementation and evolution of a Hexagonal / DDD architecture

    Backend and frontend development on Laravel 12/13 and Vue 3

    Technical scoping for front and back teams

    Mentoring developers on code quality and best practices

    Implementation of backend and frontend tests

    Implementation of ADRs (Architecture Decision Records) to formalize technical choices

    Participation in recruitment and structuring of the technical team
    Laravel Vue.js DDD API
  • Le Point
    Fullstack Developer - Laravel / React.js
    PRESS AND MEDIA
    February 2025 - Today (1 year and 6 months)
    Paris, France
    Mission objective:

    Complete overhaul of the gaming section of the LePoint.fr portal and mobile application, improving technical robustness, maintainability, and scalability of the product, on both web and mobile.

    → Achievements:
    - Complete overhaul of the backend architecture with the implementation of a standardized API, facilitating evolutions and interoperability of web and mobile applications
    - Design of a domain-oriented architecture, ensuring better code readability and reducing technical debt
    - Implementation of code quality and reliability tools, securing developments and deployments
    - Development of a modern administration dashboard for managing gaming features
    - Upskilling teams on Clean Code and code review topics

    → Technical Stack:
    PHP (Laravel), JSON:API, DDD, Hexagonal Architecture, PHPUnit, Pest, PHPStan, Deptrac, Pint, React, Vite
    Laravel React.js
  • Groupe Actual
    Fullstack Developer - Laravel and React.js
    HUMAN RESOURCES
    October 2024 - February 2025 (4 months)
    Mission objective:

    Contribute to the development and maintenance of two business applications for the Actual group, intended for management centers and temporary workers, with challenges in reliability, compliance, and process fluidity.

    → Achievements:
    - Development and maintenance of an advance request tool for temporary workers, allowing management centers to manage and approve requests
    - Design and evolution of a timesheet tool, used by temporary workers and management centers for tracking and approving worked hours
    - Implementation of new backend and frontend features related to business needs
    - Participation in the continuous improvement of code quality, stability, and maintainability of applications
    - Close collaboration with internal teams on functional and technical topics

    → Technical Stack:
    PHP (Laravel), React.js
    Laravel React.js

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Education

  • BAC STI Electrical Engineering
    Lycée Louis Armand
  • BTS Computer Science and Networks for Technical Industries and Services
    Lycée Louis Armand

Certifications

Skill set

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