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Senior Python React Developer INM000380

ITProposal


Job Location:

Brussels - Belgium

Monthly Salary: Not provided by the employer
Posted: 23 July 2026 (30+ days ago)
Application Deadline: 20 October 2026
Vacancies: 1 Vacancy

Job Summary

Senior Python / React Developer (AI Platform)
Overview

We are seeking a Senior Python / React Developer to join an established engineering team building an innovative AI platform that enables intelligent agent communication and collaboration. You will contribute to the design development and evolution of scalable secure and high-quality AI-driven applications.

Key Responsibilities
  • Design develop and maintain AI-powered applications and backend services.
  • Build scalable APIs and microservices using modern development practices.
  • Develop responsive frontend applications using React.
  • Contribute to AI agent architecture and intelligent workflow orchestration.
  • Implement secure authentication and authorization mechanisms.
  • Write automated tests and ensure high code quality.
  • Collaborate within Agile/Scrum teams to deliver high-quality solutions.
  • Participate in architectural discussions and continuous platform improvements.
Required Technical Skills

AI & Architecture

  • AI Agent Development
  • Large Language Models (LLMs)
  • Model Context Protocol (MCP)
  • Agent-to-Agent (A2A) Communication
  • Retrieval-Augmented Generation (RAG)
  • Vector Databases

Backend

  • Python
  • FastAPI
  • API & Service Development
  • SQLAlchemy
  • SQL Databases (PostgreSQL SQL Server or similar)
  • Messaging & Queueing Systems (RabbitMQ or similar)
  • Authentication & Security (OAuth SAML Microsoft Entra ID)
  • Automated Testing with Pytest

Frontend

  • React
  • JavaScript
  • CSS
  • UI Development
  • NX Framework (Micro Frontends)

DevOps & Cloud

  • Containerization
  • Kubernetes
  • CI/CD Pipelines
  • Azure DevOps
  • GitOps (ArgoCD or similar)
  • Cloud-Native Development
Nice to Have
  • LangChain
  • LangGraph
  • Microsoft Copilot Technologies
  • AI Orchestration Frameworks
  • Microservices Architecture
  • Distributed Systems Design
Soft Skills
  • Strong communication skills.
  • Collaborative team player.
  • Ownership and accountability.
  • Proactive mindset with a problem-solving attitude.
  • Experience working in Agile/Scrum environments.
  • Good English communication skills; additional European language skills are an advantage.
Work Arrangement
  • Hybrid working model.
  • On-site presence required approximately 2 days per week.
Contract Duration
  • Start: Mid-August 2026
  • End: December 2026 (initial engagement with potential extension)