You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Luis S.LS

Luis S.

Ingénieur senior · Legacy · IA · Data SaaS

€800/day
Toulouse, FR
8-15 years

Average response time: 1 hour

About Luis

Ingénieur backend Laravel senior, j'interviens sur trois sujets que les équipes SaaS finissent souvent par mettre de côté faute de temps ou de compétences spécifiques en interne :

Modernisation de codebases legacy. Migrations Lumen, vieux Symfony ou Laravel 5.x vers Laravel moderne, sans geler la roadmap ni casser la production.

Intégration de fonctionnalités IA en production. RAG, recherche sémantique, agents LLM branchés sur vos applications Laravel existantes, avec coût et latence maîtrisés.

Infrastructure data pour SaaS.Pipelines AWS (S3, Lambda, Glue, DuckDB-WASM) conçus pour rester maintenables par votre équipe interne.

Quelques réalisations :
• Migration complète d'un SaaS multi-tenant vers Laravel — plateforme utilisée par plusieurs grandes fondations européennes.
• Migration d'une API REST de Lumen vers Laravel.
• Mise en place de l'analyse statique (PHPStan) sur backend + API ; parallélisation du pipeline CI/CD.
• Chatbot RAG en production : chat.luismgspro.com.
• Pipeline AWS de données (S3 → Glue → parquet → DuckDB-WASM côté navigateur) pour SaaS multi-tenant.

Méthode : je démarre par un diagnostic court de 3 à 5 jours pour cadrer la mission sur des faits, pas sur des suppositions. J'écris ensuite le plan d'action, je l'exécute en autonomie, et je livre un code propre que votre équipe peut reprendre sans dépendance cachée. Vos développeurs internes restent concentrés sur la roadmap produit pendant que j'avance sur le sujet en parallèle.

Pour qui : éditeurs SaaS, scale-ups et équipes produit établies. Missions de quelques jours à plusieurs mois, en remote depuis Toulouse, avec des clients français, belges, UK et plus largement EU.

Si vous avez un sujet qui traîne dans le backlog ou un projet bloqué, écrivez-moi en quelques mots ce que vous avez essayé et ce qui coince — je reviens vers vous avec une première analyse.
  • Portuguese

    Native or bilingual

  • English

    Native or bilingual

  • French

    Fluent

  • Spanish

    Fluent

Remote only
Primarily works remotely

Experience

  • Self employed
    Senior Back End Software Engineer (Freelance)
    CONSULTING AND AUDITS
    July 2025 - Today (1 year)
    Toulouse, France
    Current and recent work includes:
    • - Large-scale framework migrations (Silex to Laravel, Lumen to Laravel)
    • - CI/CD pipeline optimization and test automation (parallel test execution)
    • - Data engineering with AWS (S3, Lambda, Glue) - ETL pipelines for near realtime analytics
    • - Static analysis tooling implementation (PHPStan) across multiple codebases
    • - Code quality mentoring and technical leadership in small teams
    Tech stack: PHP 7.4/8+, Laravel, Symfony, Doctrine, AWS, MySQL, Vue.js, Docker
    Amazon Web Services Software Architecture Data Engineering Laravel Docker
  • TLScontact
    Fullstack Developer
    TRAVEL AND TOURISM
    October 2022 - June 2025 (2 years and 8 months)
    Lisbon, Portugal
    • - Created and executed PHP unit tests to ensure reliable software and high quality code
    • - Improved scalability and maintainability by breaking down a large system into smaller, more manageable parts
    • - Implemented DDD and CQRS in order to improve the organization and effectiveness of a new project
    • - Used Problem-solving techniques to overcome technological difficulties and resolve issues within the framework of the current design
    • - Worked together with cross-functional teams to integrate various system components
    • - Created scalable Resful APIs for a microservices ecosystem were designed and deployed
    • - Actively participated in code reviews, offering insightful criticism and advocating best practices
    • - Mentored junior developers, passing on expertise and advising them on best practices in software development
    CI/CD REST APIs Amazon Web Services Software Architecture Domain Driven Design
  • emagine - Portugal
    Software Development Consultant
    DIGITAL AND IT
    October 2022 - June 2025 (2 years and 8 months)
    Lisbon, Portugal
    Consultant for TLScontact.

    • - Created and executed PHP unit tests to ensure reliable software and high quality code
    • - Improved scalability and maintainability by breaking down a large system into smaller, more manageable parts
    • - Implemented DDD and CQRS in order to improve the organization and effectiveness of a new project
    • - Used Problem-solving techniques to overcome technological difficulties and resolve issues within the framework of the current design
    • - Worked together with cross-functional teams to integrate various system components
    • - Created scalable Resful APIs for a microservices ecosystem were designed and deployed
    • - Actively participated in code reviews, offering insightful criticism and advocating best practices
    • - Mentored junior developers, passing on expertise and advising them on best practices in software development
    Domain Driven Design CI/CD REST APIs Amazon Web Services Laravel

Recommendations

Be the first to recommend Luis

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Build a Backend REST API
    Build a Backend REST API
  • TypeScript) How To Become An Outstanding Solution Architect Using MySQL Databases With Python
    TypeScript) How To Become An Outstanding Solution Architect Using MySQL Databases With Python

Skill set

Categories