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Sebastien Da CostaSD

Sebastien Da Costa

FULL STACK WEB DEVELOPER

€550/day
Vitrolles, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sebastien

Hello! My name is Sébastien, a passionate Full Stack developer and founder of S Digital Web Provence 13.

Graduated from the University of Strasbourg with a Bachelor's degree in Computer Science (specializing in Web and Application Development), I combine academic rigor with field experience to bring your digital projects to life. My goal: to create web solutions that are not only beautiful but above all performant and generate results for your business.

My Technical Expertise
I master the entire web project production chain, from the server to the user interface:

Frontend: HTML5, CSS3, JavaScript (ES6+), React.js.

Backend: PHP, Node.js, C#.

Databases: MySQL, SQL Server.

Design: Creation of modern and intuitive UI/UX mockups.

A "Turnkey" & Agile Approach
Working with me means benefiting from complete and transparent support:

Design & Mockup: We define the ergonomics and design together before coding.

Custom Development: No generic solutions, I code tools adapted to your specific needs (booking calendars, sales catalogs, business applications).

Agile Methodology: Continuous project monitoring with regular check-ins to adjust the product based on your feedback.
  • French

    Native or bilingual

  • Portuguese

    Conversational

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

Experience

  • S digital Provence 13
    FULL STACK WEB
    TECH
    January 2024 - Today (2 years and 5 months)
    Berre-l'Étang, France
    My Flagship Achievements
    1. Booking Platform for Sports Coaches (Sport Training)

    Automate appointment booking to free up the coach's time.
    Creation of a dynamic website with an interactive calendar allowing clients to view real-time availability and book their sessions.

    Technologies: PHP, SQL (Database), HTML5/CSS3.

    Impact: Complete digitalization of the activity and simplified schedule management.

    2. Digital Showcase: S Digital Provence 13

    The challenge: Create a strong identity and online presence for my own web services company.

    My solution: A modern, fast, and fully Responsive (mobile-friendly) website, highlighting technical expertise and design.

    Technologies: JavaScript (ES6+), HTML5, CSS3 (Animations).

    3. Sales Catalog for Car Dealership

    The challenge: Allow the car dealer to showcase their vehicle stock clearly and professionally.

    My solution: Development of a structured product catalog with detailed technical sheets for each vehicle to facilitate remote sales.

    Technologies: HTML5, CSS3, JavaScript.

    4. Modern Web Application (React Project)

    The challenge: Develop a fast and responsive user interface (UI) for a company in the Web sector.

    My solution: Use of a component-based architecture for easier maintenance and optimal navigation fluidity.

    Technologies: React.js, Node.js, REST API.

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Education

  • Professional training in Web Development.
    Professionnelle en Développement Web.
  • L1 LIFE SCIENCE
    UNIVERSITY OF STRASBOURG
    2018
    L1 SCIENCE DU VIVANT

Skill set

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