Freelancer profile translated to English.

Description

Business Apps Dev | Symfony | Analysis & Scoping

You have a business need, a process to structure, or an internal tool to create?

I step in to transform a field reality into a concrete, reliable, and truly usable application.

Full-stack developer with a dual background in development and project management, I design tailor-made tools based on real-world usage. My experience in popular education allows me to quickly understand a profession, analyze a work environment, and identify the real needs behind an initial request.

I work across the entire chain:

Scoping and clarifying needs
Functional and technical design
Development of web applications and APIs
Structuring business logic and data
Deployment and team support

Recent projects:

Schneider Electric – redesign of an e-commerce and product return management system
Horsplace – R&D and development of a connected solution combining software and e-ink display
Kosa – mobile-first field data collection application with secure API, geolocation data, and validation workflow
Doc2Sail – business tool for document management and organization for the nautical industry

My approach:

Business & Field: understanding real usage, operational constraints, and users
Backend & API: Symfony, API Platform, PHP, PostgreSQL, MySQL
Deployment: Docker, CI/CD, documentation, clean production deployment

Services

Business application scoping | Custom MVP | Business API | Legacy system takeover | Internal tools

Why work with me?

✓ Quick understanding of business needs

✓ Pragmatic approach focused on real-world usage

✓ Maintainable, scalable, and documented solutions

→ My goal: to design tools that are actually used, aligned with your business reality.

→ Contact me to discuss your needs.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Caen (up to 50km), Paris (up to 50km), Rennes (up to 50km), Rouen (up to 50km), Le Havre (up to 50km)

Optimum Circle
Freelance Symfony Project
DIGITAL AND IT
February 2026 - Today (4 months)
Caen, France
→ Objective: design a business application for collecting field observations as part of a citizen science project, conceived for mobile use and limited connectivity contexts.

→ Challenges: structure the collection of naturalist data, ensure validation workflows are reliable, manage geolocation data, and establish a robust technical foundation for future offline functionality.

→ Technical Stack
Symfony 7.4 · API Platform · PHP · JWT · PostgreSQL · PostGIS · Docker · CI/CD

→ My missions
Project scoping and technical architecture definition
Design of a secure business API for collecting field observations
Structuring of geolocation data and business repositories
Implementation of validation and moderation workflows
Development of a back-office for business teams
Preparation of a reliable and scalable technical foundation
Integration of mobile-first and low-connectivity constraints
Contribution to a product roadmap oriented towards offline use and deferred synchronization

→ Result: a solid application foundation, designed for real-world field constraints and capable of supporting the development of a citizen science tool truly usable by teams.
Git Symfony PostgreSQL EasyAdmin API Platform
Sparrow Développement
Web Developer
DIGITAL AND IT
October 2022 - July 2025 (2 years and 10 months)
Caen, France
→ Objective: assist clients in the design and development of tailor-made digital solutions, ensuring a direct link between business needs, functional scoping, and technical implementation.

→ Challenges: translate sometimes heterogeneous needs into reliable and adapted tools, maintain fluid communication with clients, and secure the various phases of design, development, and deployment.

→ Technical Stack
Symfony · API Platform · Next.js · PHP · JavaScript · Docker · CI/CD

→ My missions
Analysis and scoping of business needs with clients
Design of adapted functional and technical solutions
Development of custom web applications
Participation in testing, acceptance, and deployment phases
User support and training
Direct interface with clients throughout projects
Contribution to the improvement of technical environments and delivery workflows
→ Notable Projects

Schneider Electric: redesign of an e-commerce and product return management system as part of the Circular Certified program
Horsplace: R&D and development of a connected e-ink display solution, including the design of a proxy API and coordination with an international technical team

→ Result: comprehensive experience of projects conducted in real conditions, at the intersection of client relations, business scoping, and custom development.
Symfony Web Project Management API Platform Research and Development Needs Analysis
Eclaireuses Eclaireurs de France (EEDF)
Project Animator
ENTERTAINMENT AND LEISURE
June 2020 - September 2021 (1 year and 3 months)
Caen, France
→ Objective: design and manage adapted stays for children and adults with disabilities, ensuring a safe, structured environment tailored to the needs of the accompanied individuals.

→ Challenges: organize demanding human and logistical operations, coordinate teams, guarantee the quality of support, and adapt resources to field situations.

→ My missions:
Design and operational organization of stays
Recruitment, training, and team coordination
Logistical management and securing of field operations
Support for individuals and consideration of their specific needs
Structuring of the work framework and responsibilities within teams
→ Result: development of a strong ability to understand complex human contexts, structure work organizations, and coordinate teams in demanding environments. A formative experience in managing complex contexts, which I now use to understand usage, scope needs, and design tools truly adapted to the field.
Team Coordination Project Management Team Management Recruitment Educational Project Management

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Master in Digital Web Project Management
My digital school Caen
2025
- Définition de stratégies digitales orientées impact et durabilité - Analyse des besoins clients et diagnostic stratégique - Pilotage de projet en mode Product Owner (de l’idée au déploiement) - Rédaction et supervision de cahiers des charges fonctionnels et techniques - Coordination d’équipes pluridisciplinaires (dev, design, marketing) - Gestion de projet : budget, planning, qualité - Déploiement de solutions web et suivi des performances - Mise en place de veille technique et réglementaire
Professional Title: Application Designer Developer
My digital School caen
2023
- Développement d’applications web sécurisées (frontend + backend) - Conception d’architectures logicielles modulaires et maintenables - Modélisation et gestion de bases de données (SQL / NoSQL) - Développement de logique métier et d’API - Analyse des besoins et conception de solutions techniques - Mise en place de tests, documentation et déploiement - Contribution à des projets en environnement DevOps

Check out Marin's education

Marin Davies De Gélis

Web Developer | Symfony | Analysis & Scoping

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