Freelancer profile translated to English.

Description

Freelance Fullstack Developer with over 8 years of experience, based between Paris and Lille.

Expert in React.js, Node.js, DevOps, and PostgreSQL, I support various projects — from multimedia analysis platforms to RAG solutions and AI chatbots — also relying on MongoDB, Python, Docker/Kubernetes, and the main cloud providers (GCP, AWS, Azure).

Fluent in French and English and curious about everything, I like to design scalable architectures, optimize performance, and create intuitive user interfaces.

Versatile and autonomous, I also put my UX/UI design sense and open-source culture at the service of demanding clients, guaranteeing reliability, security, and GDPR compliance.

Industry field of expertise

Languages

English
Fluent
French
Native or bilingual
German
Conversational

Workplace preferences

Remote only

Primarily works remotely

Song Dig
Fullstack Developer + AI
January 2025 - May 2025 (4 months)
Missions:
- Professional multimedia content analysis platform for DJs.
- Music analysis (BPM, Key, Bit Rate, Sample Rate)
- Interaction with YouTube, SoundCloud, Spotify, etc. APIs.
- Development of a Websocket server for real-time interactions.
- Synchronization of local client files with configured playlists.
- Workload distribution system between multiple workers.
- Keyboard shortcut system for professional interface.
- Progressive Web App (PWA) for mobile.
- Interaction with system APIs for multimedia content management.
- Electron interface to use the application from the Desktop.
- File management, including ID3 tags.
- Personalized music recommendation algorithm.

Stack:

Node.js
React.js
Electron
Docker
Websocket
Python
OAuth
OpenAPI
Let's Encrypt
ffmpeg
AI
CSS-in-JS
Recommendation Algorithm
systemd
nginx
Node.js React.js Electron Docker Websocket
Synthia
Prompt Engineer / LLM Expert
SOFTWARE PUBLISHING
April 2023 - February 2024 (9 months)
New York, United States
Missions:
- Enterprise document and third-party API documentation ingestion system.
- Chatbot with RAG and tools such as API calls, database queries, etc.
- Open Source LLM models (Llama, Mistral) and proprietary models (OpenAI).

Technical Stack:

RAG
Debian
OpenAI
GPT 4
Open Source Models
Mistral
Llama
React.js
Node.js
PostgreSQL
LLM
Python
TypeScript
Tailwind
Websocket
Let's Encrypt
AI
nginx
Prompt engineering Artificial intelligence NLP
Fleex
Technical Lead
LOGISTICS AND SUPPLY CHAIN
June 2020 - July 2022 (2 years and 1 month)
Lille, France
Missions:
- Advanced intranet for logistics flow management.
- Integration of partner logistics APIs.
- OAuth implementation.
- Back-end optimization to handle several thousand requests per second.
- Support for onboarding several thousand users in a single day.
- Secure, automated backup system with integrity verification.
- GDPR compliance.
- E-commerce client interface.
- Company's commercial website.

Technical stack:

Node.js
React.js
PostgreSQL
Docker
Google Cloud Platform (GCP)
GitHub
Kubernetes
nginx
Okta
OAuth
GitHub Actions
Fluxcd
Traefik
Let's Encrypt
Site Reliability Engineering Team management Product management Database administration

Check out Martin's experience

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Amed Hamou

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Audrey Champion

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Signup to reveal

Engineering degree, Computer Science and Industrial Engineering
Centrale Lille
2018
Diplôme d'ingénieur, Informatique et Industriel
MIT OpenCourseware, Algorithm Design & Programming
Massachusetts Institute of Technology
2017
MIT OpenCourseware, Algorithm Design & Programming

Data Scientist

Martin Joly

Fullstack Developer: Frontend, Backend, AI, LLM

About Martin

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