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Leo GoubardLG

Leo Goubard

Fullstack Developer Django React SaaS AI

€550/day
2 projects
Tours, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Leo

Is your application or internal tool becoming difficult to scale?

I develop custom web applications and SaaS platforms, with a specialty in complex business logic (booking, workflows, invoicing, document generation, dashboards).

As a fullstack developer, I work across the entire stack to transform your business needs into reliable, maintainable, and scalable solutions.

◉ What I regularly develop

➡️ Business SaaS Applications
Internal platforms, business tools, dashboards, and back-offices.

➡️ Booking and Planning Systems
Slot management, recurrence, conflicts, and advanced business rules.

➡️ Workflows and Process Automation
Case processing, validation, and automatic document generation.

➡️ Automated Document Generation
PDF, DOCX, contracts, and administrative documents.

➡️ API Integrations and External Services
Payment, authentication, third-party services.

➡️ Automation and AI Applied to Processes
Information extraction, content generation, document classification.

◉ Achievements

• SaaS platform for managing administrative procedures
• Industrial SaaS application with complex product configuration and quote generation
• International event platform with real-time chat and virtual rooms
• Immersive collaborative application with WebSocket communication
• AI travel planning application

◉ Technical Stack

Backend
Python · Django · REST · GraphQL · PostgreSQL · Redis

Frontend
React · TypeScript · Next.js · Vite · MUI

Architecture
SaaS Platforms · Workflow Engines · Booking Systems

DevOps
Docker · CI/CD · Cloud

◉ What my clients appreciate

✓ Quick understanding of business challenges
✓ Maintainable architecture
✓ Clear communication and reliable deliveries

📩 Available for freelance missions (remote or hybrid).
  • English

    Native or bilingual

  • French

    Native or bilingual

  • Spanish

    Basic

Remote only
Primarily works remotely

Experience

  • Antoine Rougeaux
    Malt logoOn Malt
    Diagnosis and correction of a bug on Django / DRF API
    CULTURE
    March 2026 - March 2026
    Valence, Spain
    Description:
    One-time intervention on a Django Rest Framework API used by a React application, to identify and correct a HTTP 500 server error on a critical route.

    Main tasks:
    ✭ reproducing the bug and analyzing the endpoint's behavior
    ✭ investigating logs and traceback on the Django side
    ✭ verifying the DRF view, serializer, and validation logic
    ✭ correcting the handling of invalid cases on the API side
    ✭ securing the server response to prevent unhandled errors
    ✭ validating correct functioning with the React frontend

    Result: quick resolution of the server error, restoration of normal API route operation, and securing of validation logic.

    Technologies
    Django · Django Rest Framework · Python · React.js · REST API · Debugging · Backend
    Django Python React.js Django Rest Framework Python/Django
  • Surviving Data
    Fullstack Django / React Developer
    SOFTWARE PUBLISHING
    January 2026 - Today (7 months)
    Tours, France
    Description:
    Intervention within a digital team on a SaaS platform for managing administrative procedures, used to pilot complex business processes: cases, statuses, bookings, invoicing, documents, and user spaces.

    Main tasks:
    ✭ design and evolution of backend modules in Django 5 and django-ninja
    ✭ development of business features around case processing and validation workflows
    ✭ improvement of the API structure used by the React frontend
    ✭ complex data modeling with PostgreSQL
    ✭ securing business processes and improving application robustness
    ✭ contribution to architectural choices to maintain a maintainable and scalable codebase

    Result: active participation in the evolution of a business SaaS platform in production, with a strong focus on reliability, maintainability, and clarity of business logic.

    Technologies
    Django · Python · Django Ninja · PostgreSQL · React.js · TypeScript · Docker · Redis · REST API
    Python/Django PostgreSQL React.js Docker Redis
  • Surviving Data
    Fullstack Python / Django React Developer
    SOFTWARE PUBLISHING
    November 2025 - February 2026 (3 months)
    Tours, France
    Design and implementation of a dynamic document generation system to automate the production of business documents from templates, variables, and data from the SaaS platform.

    Main tasks:
    ✭ design of a dynamic document generation pipeline
    ✭ management of template variables of type @{...}
    ✭ transformation of templates into HTML then PDF generation
    ✭ support for DOCX documents for certain business use cases
    ✭ integration of document generation into existing workflows
    ✭ securing data injected into documents
    ✭ improving the maintainability of the template system
    ✭ consideration of business constraints: administrative documents, contracts, exports, and justifications

    Result: automation of document production, reduction of manual handling, and reliable generation of documents from application data.

    Technologies
    Python · Django · WeasyPrint · DOCX · HTML · CSS · PostgreSQL · Django Ninja · React.js · Docker
    WeasyPrint Python/Django PostgreSQL React.js Docker

Reviews

5.0

Out of 2 ratings

AntoineA

Antoine

Entrepreneur - Antoine Rougeaux

Reviewed on 3/12/2026

Stuck on a project, I received help from Léo, smooth communication and an effective and quick solution, I recommend, thank you!
L

Léo

Directeur Général - Floral Records

Reviewed on 3/11/2026

Website update for Floral Records, everything went very well with Léo. Smooth communication, proactivity, and impeccable delivery. I recommend.

Recommendations

MM
Dylan BelouisDB
Mathéo Marnac and 1 other person have recommended Leo

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Education

  • React Front-End Web Developer
    Ecole O'clock
    2020
    Developpeur Web Front-End React
  • CINEMA STUDIES
    CINEMA STUDIES
    2017
    Université de Lorraine

Skill set

Categories