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Jonathan RauzadaJR

Jonathan Rauzada

Senior Backend Developer PHP / Symfony Expert

€550/day
Paris, FR
8-15 years
Symfony
PHP
Doctrine
PostgreSQL
API Platform

Average response time: 12 hours

Freelancer profile translated to English.
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About Jonathan

Your Symfony application is slowing down. The code has become difficult to evolve. Each new feature takes twice as long as before.

This is exactly where I come in.
I take over existing Symfony projects: refactoring, optimization, feature evolution, without breaking what's running. No complete rewrites. No lengthy onboarding.

Senior backend developer, I work 100% remotely. With 9 years of expertise in the PHP and Symfony ecosystem, I am productive on your codebase in a few days, not weeks.

📈 What this looks like in practice:
→ Architecture and development of B2B SaaS platforms from scratch with current standards (Symfony 8, PHP 8.4, API Platform)
→ -80% reduction in processing time for an import pipeline (batch processing + SQL tuning)
→ Asynchronous architecture with RabbitMQ to handle load spikes
→ Post-audit security: RBAC, secure uploads, access hardening
→ Creation of real-time APIs with API Platform and Mercure

⚙️ Stack
Symfony • PHP 8.x • API Platform • Doctrine • PostgreSQL • Redis • RabbitMQ • Docker • CI/CD • Git

✅ For whom?
Tech teams or project owners with a production application (or a complex platform project) who need an autonomous developer, capable of securing the codebase and making solid architectural decisions.

📩 Ready to streamline your development?
Send me a short message describing your project or your current roadblocks, and we'll arrange an initial discussion.
Software Publishing
IoT (Internet of Things)
Digital and IT Services
Telecommunications
Pharmaceuticals

  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km), Bordeaux (up to 50km), Paris (up to 50km), Lyon (up to 50km), Marseille (up to 50km)

Experience

  • Cultivatrace
    Traceability and Regulatory Compliance SaaS
    SOFTWARE PUBLISHING
    February 2026 - Today (6 months)
    Toulouse, France
    🎯 Solo design and development of a multi-tenant traceability and regulatory compliance SaaS, built on Symfony 7, for audited sectors.

    ✔ DDD Architecture on Symfony: Domain modeling in strict layers, aggregate roots, value objects, and domain events — implemented with native Symfony components.
    ✔ Audit & Compliance: Append-only audit log to ensure data integrity and regulatory traceability.
    ✔ API & Real-time: Hypermedia REST API with API Platform 3, real-time notifications via Mercure.
    ✔ Security & Multi-tenancy: Granular RBAC, strict data isolation per tenant, JWT authentication.
    ✔ Payment & Subscriptions: Stripe integration with server-side webhook verification and plan management.
    ⚙️ Stack: Symfony 7 · API Platform 3 · PostgreSQL 16 · TimescaleDB · Vue 3 · Docker · Mercure · Redis · Stripe
    Symfony ApiPlatform PostgreSQL TimescaleDB Vue.js
  • Gladiatek
    Architect & Developer
    SOFTWARE PUBLISHING
    November 2025 - February 2026 (3 months)
    Toulouse, France
    ​🎯 Design and development from scratch of a white-label SaaS MVP enabling the installation of cloud applications (monetizable interface masking the underlying Cloudron engine).
    ​✔ Global Architecture: Design of the complete product architecture, from business modeling to service orchestration (beyond simple implementation).
    ✔ Identity & Access: Implementation of a complete and secure authentication system.
    ✔ Monetization: Integration and configuration of payment flows via the Stripe API.
    ✔ Automated Provisioning: Infrastructure control and on-the-fly application deployment through Cloudron API integration.
    ✔ Workflows & Automation: End-to-end user journey orchestration (registration → payment → activation) via automated workflows in n8n.
    ​⚙️ Stack & Tools: SaaS Architecture · REST API · Stripe · Cloudron API · n8n
    Python Bash n8n Cloudron
  • iSYBUY
    Backend Developer PHP / Symfony
    SOFTWARE PUBLISHING
    August 2024 - July 2025 (11 months)
    Toulouse, France
    🎯 Symfony Expert, I recently optimized a data import pipeline at iSYBUY, reducing processing time by 84% through SQL tuning and Batch processing.

    ✔ Performance Optimization: Redesign of a data import pipeline (Batch processing, SQL tuning) resulting in an 84% gain in processing time.
    ✔ Asynchronous Architecture: Implementation of RabbitMQ to offload heavy processing from the application.
    ✔ Real-Time: Integration of the Mercure protocol (SSE) for live status monitoring.
    ✔ DevOps & Quality: Maintenance of CI/CD pipelines under Docker and deployment reliability.

    ⚙️ Technical Stack: Symfony, PHP, RabbitMQ, Redis, Mercure (SSE), PostgreSQL, Docker, CI/CD.
    Symfony PostgreSQL RabbitMQ Redis SQL
Check out Jonathan's experience

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Education

  • Web Developer
    Web@cademie
    2012
    🎯 Formation généraliste en développement web, avec maîtrise de PHP, JavaScript, MySQL, HTML/CSS et autres technologies. ✔ Autonomie, rigueur et curiosité pour explorer de nouvelles technologies ✔ Capacité à s’adapter rapidement à des projets variés et complexes ⚙️ Stack : PHP, JavaScript, MySQL, HTML/CSS, Git, et exploration continue de nouvelles techs

Skill set

Docker
RabbitMQ
Redis
API
CI/CD
Vue.js
TimescaleDB
Mercure
Domain Driven Design
TDD

Categories