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Nassim B.NB

Nassim B.

AI engineer Rust • React • Python • Vue.js • SaaS

€1,000/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Nassim

Hello! I am Nassim Benali, a senior full-stack engineer, founder of Syntree, a hybrid AI platform where every action is driven by a deterministic logic engine before calling an LLM.
I help companies build intelligent, reliable, and robust solutions: SaaS applications, AI agent systems, high-performance Rust microservices, and scalable cloud platforms.

I can help you transform an idea into a solid product, or modernize an existing architecture to reach an industrial level: fast, secure, and automated. My approach is resolutely "engineering-first": clear architecture, clean code, net and predictable deliverables.

🚀 What I deliver for my clients

Design and development of complete SaaS applications (frontend + backend + CI/CD + monitoring).

Creation of autonomous AI agents, intelligent workflows, and LLM integration (Mistral, Qwen, GPT).

Implementation of ultra-high-performance Rust microservices (Auth, notifications, finance, security…).

Development of modern Vue 3 + TypeScript + Vite web interfaces.

Fully automated Kubernetes + GitOps architecture via ArgoCD, Docker, GitHub Actions.

Integration of APIs, notification systems, complex business workflows.

Complete technical overhaul (scalability, security, performance).

🔥 What sets me apart

A unique expertise combining applied AI, software architecture, DevOps, and microservices.

📦 Types of projects I handle

Creation of a complete SaaS (MVP → production)

Development of high-performance APIs in Rust or Python

Implementation of an AI agent system or intelligent assistants

Cloud architecture, containerization, CI/CD, Kubernetes

Overhaul of an existing system to make it scalable or more reliable

👉 If you are looking for an expert capable of designing, developing, and deploying complete, modern, and intelligent solutions, you are in the right place.
I would be happy to discuss your project!
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km), Montpellier (up to 40km)

Experience

  • Syntree
    Founder & Lead Architect
    DIGITAL AND IT
    November 2025 - Today (7 months)
    Paris, France
    Syntree is a hybrid artificial intelligence platform combining LLMs, autonomous agents, a deterministic logic engine, and a Kubernetes microservices architecture.

    Context

    Creation of the Syntree platform, designed as a "code-first" AI where each request first goes through a deterministic logic engine before any call to an LLM.
    Objective: design a scalable, secure, and industrialized infrastructure for several SaaS applications (CoreAI, Vigilis, Pepetes, Pharmalink, MyAccount).

    Tasks performed
    🔧 Architecture & Development

    Design of a Rust microservices architecture (Axum) + Vue.js 3 + PostgreSQL + Redis.

    Development of several backend services:
    auth-service, notification-service, pepetes-api, vigilis-api, etc.

    Implementation of a deterministic logic engine orchestrating tool/agent/LLM calls.

    Creation of the LLM Service module integrating Qwen 3 Coder 30B + Whisper via Apple Silicon.

    Setup of an internal AI agent framework (analysis, actions, validation, planning).

    Development of Vue 3 frontends:
    CoreAI, Vigilis, Pepetes, Pharmalink, MyAccount.

    ☁️ Infrastructure & DevOps

    Setup of a Kubernetes cluster (k3d) with Traefik, NATS JetStream, Redis, PostgreSQL 16.

    Complete GitOps architecture via ArgoCD (18 applications: DEV + PROD).

    Self-hosted macOS GitHub Actions build pipelines (tests, lint, Docker, push).

    Full automation of deployments:
    git push → build → push Docker Hub → ArgoCD Image Updater → auto-deployment.

    Kubernetes rolling updates with no downtime (2–5 minutes from push to production).

    Secret management via Sealed Secrets.

    🔐 Security

    Design of a secure authentication system:
    JWT HS256, Argon2, RBAC, internal SSO cookies.

    📊 Observability & Quality
    Complete drafting of the 2025 technical roadmap (OAuth2, Kong, Stripe Billing, SDKs…).

    Setup of unit tests Rust/TS, E2E (Playwright, Q2 2025).

    Implementation of the CI/CD validation plan (100% automated).
    Rust Python Vue.js front-end-interface-development backend-service-development
  • EDF
    Tech Lead Python / Vue.js / AI RAG MCP LLM
    ENERGY AND UTILITIES
    October 2024 - November 2025 (1 year and 1 month)
    Paris, France
    🎯 CONTEXT
    The Collaborative Development (DevCo) project aims to streamline operational data analysis and reporting practices. Historically, several business stakeholders used heterogeneous tools (R, Python, Excel VBA). The objective is to centralize, secure, and modernize the processing of DOAAT's IS data. More recently, the project has expanded with the goal of providing businesses with generative AI tools: implementing RAG architectures, an MCP server, and dynamic chatbots integrated into applications.

    🌐 DevCoStore Project
    Management of about ten applications with integration of new solutions
    Taking over existing applications developed in R or Python, and creating applications from scratch based on business needs using Python FastAPI and Vue.js.
    Full project cycle: 🤝 business workshops → 📝 design (diagrams, databases) → 💻 frontend/backend → 🗄️ PostgreSQL → 🔧 GitLab CI/CD → 🚀 OpenShift deployment.
    Migration from Python 3.9 → 3.13.
    Development of REST APIs with Go (Fiber) (-> backend performance).

    🤖 EDF IAG Project - Generative AI
    Setup of an MCP server (FastMCP) to expose endpoints as tools
    Development of a Vue.js conversational UI with dynamic display of contextual blocks
    Design of an intelligent layout engine based on LLM response type.
    Structuring responses via LLMs (GPT, Mistral) with metadata injection (JSON Schema).
    usable by AI agents.
    Implementation of an RAG architecture (Faiss) with augmented generation.
    Integration of open-source LLMs (LLaMA 3, Mistral) self-hosted via Ollama.
    Multi-agent orchestration with CrewAI (Researcher, Formatter, Answer).

    📱 Mobile Project – eDOAAT
    Design and development of a cross-platform mobile application (iOS/Android) with React Native.

    💻:
    Python, Rust, FastAPI, Go, Fiber, Vue.js 3, PostgreSQL, Kubernetes, GitLab CI/CD, LangChain, LangGraph, RAG, MCP, Ollama, Docker.
    Rust Vue.js Python mobile-app-deployment RAG
  • Le Conservateur
    Full Stack Engineer Python Fastapi/React
    BANKING AND INSURANCE
    October 2019 - April 2022 (2 years and 6 months)
    16 Paris Foret, Achères-la-Forêt, France
    Within the digital department, participated in several cross-functional projects aimed at optimizing existing systems and creating new solutions.

    ️ Implementation of a cross-functional log management solution: Application architecture design and definition. Centralization and monitoring of cross-functional applications. Setup of log management (connection, processing, errors). Development of automated reporting and dashboards for quality monitoring.
    software-architecture Python performance-optimization cms-customization

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Education

  • Fullstack engineer vuejs / python
    CACD2 - Crédit Agricole Conseil & Développement Digital
    Ingénieur fullstack vuejs / python
  • Master 2 MIAGE, MIAGE
    Université Paris-Saclay
    2016
    Master 2 MIAGE, MIAGE

Skill set

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