Freelancer profile translated to English.
Back to original languageAbout Mehdi
🚀 Senior Fullstack Developer | TypeScript · React · Node
Hello, I'm Mehdi.
Looking for a dev who delivers quickly, writes clean code, and understands your business challenges?
🏆 Supermalter ll · 17 projects on Malt · 4.9/5 · 10 recommendations · Available in Paris/remote
🎯 WHAT I DO FOR YOU
→ Development ofB2B SaaSfrom A to Z (front, back, infra, payments)
→Redesign and optimization of existingReact/Next.js applications
→Integration of AIinto your products: ChatGPT, Whisper, autonomous agents
→ **Scalable architecture**: monorepo, Clean Architecture, microservices
📈 CONCRETE EXAMPLES OF MY LATEST MISSIONS
- PropTech SaaS (property management): Turborepo architecture + critical business modules
- AdTech SaaS: performance ×3, +40% user retention
- Sovereign AI Platform: real-time transcription < 3s, 100% local
🛠️ MY MAIN STACK
React · Next.js · TypeScript · Node.js · NestJS · Fastify · PostgreSQL · Prisma · Docker · OpenAI · WebRTC
💼 MY AREAS OF EXPERTISE
- Startup MVP creation
- Technical team augmentation for long-term missions
- Application audit & redesign
- AI integration into an existing product
💎 WHY CHOOSE ME
✓ Epitech education (Master's degree in Software Engineering)
✓ 4 years of product experience, from MVP to high-traffic apps
✓ Agile methodology, iterative deliveries, code reviews
✓ Clear communication with non-technical stakeholders
📩 Describe your project in 2-3 lines, and I'll get back to you within 1 hour.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Lyon (up to 50km), Lille (up to 50km), Toulouse (up to 50km), Marseille (up to 50km)
Experience
- Amoa
On Malt
Fullstack Development — Amoa PRO Platform (amoapro)REAL ESTATEMarch 2026 - April 2026 (1 month)Paris, FranceAs part of the Amoa team, I participated in the development of a complex B2B SaaS for property managers and building administrators. My work focused on structuring a modern monorepo architecture to share business logic across different applications, while developing critical modules for the daily management of thousands of residents.Monorepo & Frontend Architecture:- Turborepo Structuring: Setting up and maintaining a monorepo for efficient sharing of component libraries and utilities between packages.
- React TypeScript Development: Designing modular and reusable interfaces within a high-velocity development ecosystem.
- DX Optimization: Improving build and code-sharing pipelines to streamline the technical team's workflow.
Backend & Business Logic (PropTech):- High-Performance Fastify API: Developing robust APIs in TypeScript with Fastify, prioritizing response speed and data security.
- Business Module Implementation: Creating complex features for lot management, automatic charge calculation, and general meeting organization.
Quality & Collaboration:Active participation in code reviews and Agile rituals to ensure continuous delivery of high-value features.Skills Developed:- Mastery of large-scale Monorepo architectures with Turborepo.
- High-performance backend development with Fastify and TypeScript.
- Expertise in the PropTech sector (real estate and property management).
This mission allowed me to demonstrate my ability to thrive in demanding technical environments where code scalability and modularity are absolute priorities. - BGST Invest 2(Renewal) Frontend / Backend Web Development - Node, Reactjs, Nestjs, NextjsDIGITAL AND ITMarch 2026 - April 2026 (2 months)Paris, FranceFollowing an initial mission focused on developing the analytical core of the Google Ads SaaS, I continued the collaboration on a second phase dedicated to improving the solution, with a focus on performance, reliability of predictive analysis, and product enrichment.Platform Optimization & Product Evolution:
- Improvement of predictive analysis modules to refine anomaly detection and identify growth opportunities in Google Ads campaigns.
- Evolution of decision-making dashboards (ROAS, CPA, budget pacing, conversion tracking) with new indicators and advanced visualizations.
- Optimization of real-time data processing to reduce latency and improve SaaS responsiveness.
Scalability & Technical Performance:- Refactoring and optimization of the Next.js / NestJS / PostgreSQL architecture to handle larger volumes of advertising data.
- Improvement of back-end performance (queries, calculations, KPI aggregations).
- Strengthening reliability and scalability through Docker and optimization of deployment workflows.
Functional Improvements & Data Reliability:- Enrichment of Google Ads API integrations and improvement of the quality/consistency of data used.
- Consolidation of alerting and monitoring engines for more precise campaign management.
- Contribution to product evolution with a focus on business performance and decision support.
Strengthened Skills:- Optimization of data-intensive SaaS architectures
- Application scalability and performance
- Predictive analysis applied to AdTech
- Advanced TypeScript / Next.js / NestJS / PostgreSQL / Docker expertise
This second phase allowed me to contribute to the product's maturity, evolving from an initial analytical core to a more performant, scalable, and business-optimization-oriented solution. - LST99Software Engineer | Full-Stack & AI – Sovereign Transcription SolutionsSOFTWARE PUBLISHINGAugust 2025 - March 2026 (6 months)Paris, FranceAs a Full-Stack & AI developer, I designed and deployed two critical audio transcription solutions operating 100% locally, without any cloud dependency. This project addressed needs for maximum sovereignty and security, requiring extreme optimization of Whisper and Kyutai models to ensure real-time performance in a restricted environment.Live & Real-Time Transcription (WebRTC):
- Real-time Tool Design: Development of a transcription engine for conferences with ultra-low latency (under 3 seconds).
- Local Audio Processing: Implementation of Whisper and Kyutai models without internet connection, ensuring complete confidentiality of exchanges.
- Data Streaming: Management of audio streaming via WebRTC and optimization of the Node.js stack to support continuous processing load.
Media Analysis & Diarization:- Speaker Identification: Integration and optimization of diarization to distinguish different speakers in long recordings.
- Automatic Summarization: Development of a concise summary module for audio/video content using advanced Prompt Engineering on local models.
- Agile Collaboration: Teamwork with rigorous code reviews and iterative deliveries to ensure software robustness.
Skills Developed:- Mastery of "On-premise" AI (Whisper, Kyutai) and complex audio processing.
- Expertise in real-time technologies (WebRTC) and secure environments.
- High-performance Full-Stack development (Python, TypeScript, Node.js).
This mission allowed me to tackle major technical challenges related to latency and confidentiality, proving that cutting-edge AI can be deployed in a completely autonomous and sovereign manner.
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Recommendations
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+7
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Education
- Bachelor in Information Technology (Bac +3)Epitech Paris2024Développement C - Développement C++ - Développement JS (React, Next, Nest, Node) et Typescript - Développement Python
- Expert in Software EngineeringEpitech- Cursus BAC +5 - Pédagogie par projet - Gestion de projet & projets de groupe - Méthode agile & TDD - Langages: - C - C++ - Python - Docker - Javascript - Node js - TypeScript - React - React Native - Jenkins - Postgres - Git
Certifications
- Bachelor in Information Technology (Bac +3)EPITECH2024
- Scientific Baccalaureate with SIN Option (Digital Information Systems)Éducation Nationale2021