Spontaneous Application - Senior Fullstack Consultant - Python & React (m/w/d)

Job Description

We are looking for an experienced Senior Fullstack Consultant (Python/React) to join a team responsible for the development and evolution of a critical information system. You will work at the heart of key business processes.

Responsibilities

Within a multidisciplinary team (Product Owner, business analysts, developers, business users), you will be involved in the full development lifecycle:

• Analyze functional requirements and understand business models within the energy domain

• Design and develop robust, scalable, and high-performance solutions

• Develop and maintain modules for contract management, transactions, meter readings, forecasting, pricing, tradefeed, P&L, and risk management

• Implement software quality best practices (design patterns, SOLID principles, testing, code review)

• Develop and optimize APIs and microservices in Python (Flask, FastAPI)

• Design, manage, and optimize databases (Postgres, SQL Server, AWS Athena)

• Build modern web interfaces using React, TypeScript, HTML/CSS

• Process and leverage large datasets (Pandas, NumPy)

• Contribute to the platform’s performance, stability, security, and scalability

• Participate in operational support, corrective maintenance, and enhancements

• Collaborate closely with Cloud & DevOps teams for service deployment and monitoring (Docker, Kubernetes, Azure, AWS S3)

Required Skills

Backend:

• Python, microservices, REST APIs

• Frameworks: Flask, FastAPI

Frontend:

• React, TypeScript, HTML, CSS

Data & Databases:

• Postgres, SQL Server, AWS Athena

• Data processing: Pandas, NumPy

Cloud & DevOps:

• Azure, AWS S3

• Docker, Kubernetes (K8s)

• CI/CD, Infrastructure as Code (IaC)

Qualifications

Profile

• Proven experience in fullstack development with Python/React

• Strong understanding of distributed architectures, software quality, and engineering best practices

• Ability to understand complex business models and interact with functional teams

• Autonomy, rigor, teamwork, and initiative

• Strong interest in data-driven environments and performance-related challenges

• Fluent in French & English ( Dutch is a strong plus)

Additional Information

All our positions are open to both women and men and are, of course, open to people with disabilities.