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Nicolas CastaniaNC

Nicolas Castania

Python Developer | Django · Angular · AI

€450/day
Bruxelles, BE
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Nicolas

Full-Stack Python Developer(Django / Angular / PostgreSQL), I design and deploy robust web applications, built for production and longevity.

My approach: clean code, solid architecture, reliable systems. Not disposable prototypes, but products that truly work and last.

What I build:
- Complete web applications, from back-end to interface
- Scalable and well-structured REST APIs
- AI Integrationwhen the project justifies it:RAG pipelines, LLM agents

A concrete example: Classora, a school management SaaS platform in production, used daily by Belgian schools. I manage its entire lifecycle, from development to deployment to maintenance.

A unique background: before development, 10 years in a regulated pharmaceutical environment (GMP standards, traceability, zero defects). I've retained a demand for quality and reliability that I apply to every line of code.

Stack: Python · Django · Angular · TypeScript · PostgreSQL · Docker · RAG · LLM

Available for full remote, for short missions or long collaborations.

I work particularly well with technical stakeholders who value meticulous work.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • InitLab
    Founder & Full-Stack Developer
    September 2025 - Today (11 months)
    Design and delivery of custom web applications and SaaS products for startups and SMEs.

    Stack: Django · Angular · PostgreSQL · Docker · LLM · RAG · Redis
    Django Angular RAG Redis LLM
  • Classora.io
    Full-stack web application | School management platform
    EDUCATION AND E-LEARNING
    April 2025 - Today (1 year and 4 months)
    Classora is a school management platform that I coded entirely. Today, the application is in production and used daily.

    Stack: Django REST API · Angular · TypeScript · PostgreSQL · Docker · VPS

    What I developed:
    - Complete management of students, classes, and groups with attendance tracking
    - Digital class journal for pedagogical follow-up
    - Configurable schedule with personalized school sessions
    - Grading system and report card per student
    - Internal messaging and announcement system for schools
    - Role and permission system (management, teachers) with rights inheritance
    - Multi-plan subscription system (Teacher, Super-Prof, School)
    - Responsive interface with Angular SSR (SEO optimized)

    I manage the architecture, development, deployment, and maintenance alone.
    Django Angular PostgreSQL Docker REST APIs
  • ViralBird.io
    AI content generation tool for social media.
    SOCIAL NETWORKS
    September 2025 - January 2026 (4 months)
    AI content generation tool for social media.

    Stack: Django 5.2, Angular 20, TypeScript, PostgreSQL + pgvector

    Key features:

    - Autonomous AI agent with RAG (PDF/TXT/MD knowledge base + embeddings)
    - Conversational chat with the agent via OpenAI function calling (9 tools)
    - X account connection (OAuth 1.0a) + content scheduling with approval workflow
    - Auto-engagement: replies, likes, follows with randomized delays (anti-ban)
    - Analytics dashboard: posts published, follower growth, activity

    AI pipeline implemented from scratch — no LangChain, custom architecture.
    Django Angular PostgreSQL RAG AI Agent

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Education

  • Full-Stack Developer Python
    TechnoFutur TIC
    2024
    Full-Stack Developer Python
  • .NET / C# Developer
    2024
    .NET / C# Developer

Skill set

Categories