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Richard GuerrierRG

Richard Guerrier

Full-Stack Developer Vue React Symfony, SaaS MVP

€400/day
Lyon, FR
8-15 years

Average response time: A few days

Freelancer profile translated to English.
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About Richard

🚀 I help startups and SMEs launch and scale their SaaS products without technical debt or risk.

🧩 My interventions:
• Design of scalable MVPs and SaaS to quickly validate your market
• UX redesign and creation of Design Systems for coherent and scalable interfaces
• API architecture and advanced integrations (SSO, Okta, Azure AD, OIDC, OAuth2, third-party APIs, GenAI, RAG, embedding, llm)
• Technical audit and reduction of technical debt for reliable products
• Modernization, optimization of applications for more performance and reliability
• Support for teams to accelerate delivery

⚙️ Main Stack: React, Vue.js, Nuxt, Node.js, PHP, Symfony, PostgreSQL, GraphQL
🤖 Specialties: complex integrations, SSO, Okta, Azure AD, OIDC, OAuth2, complex product, UX redesign, technical audit, automations, GenAI

🤝 My approach: product partner, pragmatic technical decisions, clear communication, and reliable code.

📩 Let's discuss your project and deliver faster!
  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Conversational

Can work on-site
Lyon (up to 20km), Lille (up to 20km), Paris (up to 20km), Valence (up to 20km)

Experience

  • Client confidentiel
    Front-end Developer Vue.js / Nuxt • B2B SaaS • UX, DataViz & Auth (SSO)
    SOFTWARE PUBLISHING
    May 2025 - March 2026 (10 months)
    Lyon, France
    Development and evolution of a B2B SaaS platform (Vue.js 3 / Nuxt.js 3 / Node.js)
    Project carried out in collaboration with a web agency, with strong autonomy on front-end and back-end topics.

    🔹 SPA UX Redesign
    • Complete redesign of the mobile experience of an application using Vue.js 3 / Nuxt.js 3
    • Pixel-perfect integration of Figma mockups (Atomic Design, Tailwind CSS)
    • Navigation and performance improvements

    🔹 Data Visualization Module
    • Design and development of a data visualization module
    • Integration via GraphQL (Hasura)
    • Stack: Vue.js 3, Nuxt.js 3, Vuetify, Pinia, TypeScript

    🔹 SSO Implementation (Okta / Azure AD)
    • Implementation of a flexible authentication system (SSO, multi-SSO, hybrid, OIDC)
    • Complete management of user journeys
    • Backend development in Node.js (Fastify)

    🤝 Collaboration with Lead Dev, DevOps, and CTO
    🚀 Involvement in critical topics: performance, UX, and authentication
    Nuxt 3 Vue.js Node.js SSO Okta
  • Formasup Mediterranée
    Full Stack Developer PHP / Symfony • EdTech Platform
    SOFTWARE PUBLISHING
    April 2025 - Today (1 year and 4 months)
    Marseille, France
    Development of a multi-university student management tool (Symfony / AWS)
    Participation in the evolution of a platform used by several institutions, with an active role in performance, architecture, and admin experience.

    🔹 Synchronization Engine with Scheduling Systems
    • Design and development of a synchronization system via external APIs
    • Implementation of a modular architecture allowing rapid addition of new connectors
    • Improvement of data processing reliability and performance
    • Autonomous estimation and management of technical tasks

    🔹 Redesign of Admin Dashboards
    • UX redesign of interfaces with Symfony UX and Stimulus
    • Optimization of data processing for faster and smoother interfaces
    • Migration of indicators to a new data structure

    🔹 Technical Environment
    Symfony 6 • PHP 8.1 • Symfony UX • Stimulus • JavaScript • EasyAdmin
    PostgreSQL • AWS (SQS, Lambda, RDS, CloudWatch) • Docker

    🤝 Teamwork of 4 developers in Agile methodology (Scrum)
    🚀 Involvement in key topics: performance, architecture, API integration
    PHP Symfony UX Stimulus EasyAdmin JavaScript
  • Kairios
    Symfony / Vue.js Developer • Telemedicine SaaS • Performance & UX
    HEALTH AND WELLNESS
    July 2024 - January 2025 (6 months)
    Lyon, France
    Development of a telemedicine platform (Symfony / Vue.js)
    Participation in the evolution of a SaaS tool used by healthcare facilities and practitioners, with a focus on reliability, performance, and user experience.

    🔹 Platform Maintenance and Evolution
    • Handling tickets (TMA / TME): bug fixes, improvements, and new features
    • Front-end and back-end refactoring to improve quality and maintainability
    • Autonomous design and estimation of evolutions

    🔹 UX Redesign of Practitioner Calendar
    • Complete redesign of a key module for availability management (day / week / month)
    • Development in Vue.js with modular components (Atomic Design)
    • Implementation of dynamic filters (specialty, availability, facility) to improve search

    🔹 Performance and Scalability
    • Improvement of server-side and SPA performance
    • Implementation of tests (unit and acceptance) to ensure delivery reliability
    • Optimization of architecture to support scaling

    🔹 Technical Environment
    Symfony 5 → 6 • PHP • Vue.js • TypeScript • MongoDB • Redis • RabbitMQ • Docker

    🤝 Collaboration within a team of 8 developers
    🚀 Involvement in critical topics: performance, UX, and application stability
    PHP Symfony Vue.js Docker Atomic Design PHPUnit

Recommendations

Romain B.RB
CS
Romain B. and 1 other person have recommended Richard

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Education

  • Master - IT Project Management
    IT-AKADEMY
    2020
    Level I EU Qualification. 🎓 Compétences en ingénierie logicielle, gestion de projets IT, conception et administration de bases de données, audit et évaluation des systèmes d’information, conduite du changement et démarche qualité.
  • Bachelor's Degree - IT Designer, Developer
    AFIP
    2015
    Level II EU Qualification 🎓 Formation en conception et développement logiciel, architecture applicative et programmation full stack.

Skill set

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