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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 a solid technical foundation, 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 high technical and business stakes.

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 steering tools
- Technical refactoring and architecture overhaul

🧠 Approach
My approach is product-oriented: clear framing, confident 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

  • Le Point
    Fullstack Developer - Laravel / React.js
    PRESS AND MEDIA
    February 2025 - Today (1 year and 4 months)
    Paris, France
    Mission Objective:

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

    → Achievements:
    - Complete backend architecture overhaul 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 reduction of technical debt
    - Implementation of code quality and reliability tools, securing developments and deployments
    - Development of a modern administration dashboard for managing gaming features
    - Skill development of 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 a focus on reliability, compliance, and process fluidity.

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

    → Technical Stack:
    PHP (Laravel), React.js
    Laravel React.js
  • Solid'AIR
    Lead Fullstack Developer (Laravel and Vue.js)
    CIVIL ENGINEERING
    October 2023 - September 2024 (11 months)
    Évry, France
    Mission Objective:

    Design and develop a custom CRM to centralize business operations, automate internal processes, and improve the management of teams, appointments, and customer relations.

    → Achievements:
    - Development of a CRM from scratch, tailored to the client's specific business needs
    - Implementation of data migration scripts for a smooth transition from the existing system
    - Design and development of several functional modules: scheduling, quotes, teams, appointments, diagnostics
    - Creation of an interactive scheduler (drag & drop) for managing resources by day, week, and month
    - Implementation of an automatic appointment scheduling system, based on geographic distance, aiming to reduce travel costs, save time, and optimize the number of appointments per employee
    - Implementation of a secure authentication system (username/password)
    - Integration of external APIs to enhance business functionalities
    - Automated generation of PDF documents (quotes, invoices, appointment sheets)

    → Technical Stack:
    PHP (Laravel), Vue.js 3, REST API, ADR Architecture (Action Domain Responder), MySQL, external API integrations, PDF generation
    Laravel Vue.js

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Education

  • BAC STI Electrotechnical Engineering
    Lycée Louis Armand
  • BTS in Computer Science and Networks for Industrial and Technical Services
    Lycée Louis Armand

Certifications

Skill set

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