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Quentin LeclerQL

Quentin Lecler

Architecte Systèmes SaaS | Intégration Sécurisée

€650/day
Bastogne, BE
8-15 years

Average response time: 1 hour

About Quentin

Architect & Tech Lead | Mission-Critical SaaS (Fintech & Healthcare)

With over 8 years of experience in Luxembourg's highly regulated sectors, I architect, build, and secure complex SaaS platforms from infrastructure to frontend. Acting as Tech Lead and sole architect on multiple projects, I specialize in delivering robust systems where security, compliance, and reliability are non-negotiable.

Expertise & Track Record:

  • Healthcare (MedTech): Full integration with Luxembourg's national health systems (CNS PID V2, CNS ECIT, LuxTrust) and ophthalmic medical devices (Node.js).
  • Finance (Fintech): Architecture of white-label SaaS platforms and API gateways for major Benelux banks (Belfius, BNP Paribas Fortis, Cofidis, Elantis).
  • Security & DevOps: Defensive pentesting (patching RCE, IDOR, XSS), CI/CD pipelines setup (GitHub Actions), and AI-assisted workflow integration (Claude Code).
Core Tech Stack:
PHP • Laravel • TypeScript • Node.js • React • Vue.js • MariaDB/PostgreSQL • REST APIs / OAuth2.

Availability:
Available for Hybrid or On-site missions in Luxembourg and Belgium.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Bastogne (up to 50km), Arlon (up to 50km)

Experience

  • Doctipro
    Full Stack Developer & Tech Lead - Healthcare SaaS
    MEDICAL
    July 2025 - Today (1 year)
    Clervaux, Luxembourg
    ‣ Architected and delivered a healthcare SaaS integrated with the Luxembourg national health system (CNS PID V2, CNS ECIT & LuxTrust).
    ‣ Led technical architecture, technology decisions, and introduced CI/CD via GitHub Actions.
    ‣ Identified and patched critical security vulnerabilities (RCE, IDOR, XSS) through defensive pentesting.
    ‣ Designed DevOps infrastructure (Nginx reverse proxy, Supervisord for Laravel Reverb).
    ‣ Integrated ophthalmic medical devices via Node.js.
    ‣ Integrated AI-assisted workflows (Claude Code) into the code review pipeline for automated security gating.
    PHP Laravel MariaDB Node.js Websocket
  • Référenceur
    Sole Architect & Full Stack Developer - Financial SaaS
    BANKING AND INSURANCE
    January 2024 - July 2025 (1 year and 6 months)
    Weiswampach, Luxembourg
    ‣ Sole architect and developer of a white-label financial SaaS for mortgage and credit management, taking full ownership from requirements analysis to production.
    ‣ Built a fully customizable no-code engine allowing brokers to configure landing pages, simulators, and domains instantly.
    ‣ Implemented full test coverage across the platform (Playwright E2E, feature, and unit tests) to ensure financial data integrity.
    ‣ Managed project delivery end-to-end solo, including client needs analysis and sprint planning.
    ‣ Integrated external billing and payment gateways (Zoho API, CLIP).
    PHP Laravel PostgreSQL React.js Vue.js
  • Anysoft Luxembourg
    Lead Full Stack Developer - Financial SaaS
    BANKING AND INSURANCE
    April 2019 - January 2024 (4 years and 9 months)
    Troisvierges, Luxembourg
    ‣ Led the full migration of a legacy Windows desktop application to a modern web-based SaaS platform (100% solo), now serving 200+ broker agencies across the Benelux.
    ‣ Architected and integrated C# / .NET Core API gateways for secure loan submissions to major banking partners (Belfius, Cofidis, BNP Paribas Fortis, Elantis).
    ‣ Implemented highly regulated identity verification systems using smart card readers.
    React.js Typescript Node.js Sybase REST APIs

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Education

  • Bachelor's in Computer Science & Management
    IPEPS Verviers
    2018
    Bachelor's in Computer Science & Management
  • CCNA — Cisco Certified Network Associate
    Cisco Networking Academy
    2017
    CCNA — Cisco Certified Network Associate

Certifications

  • CCNA — Cisco Certified Network Associate
    CCNA — Cisco Certified Network Associate
    2017
    Networking Network Security TCP/IP Routing Cisco IOS Switching

Skill set

Categories