Python Developer – FastAPI & AsyncIO

Pauwels Consulting; Brussel; Hybride; EUR 90 000 - 120 000; Plein temps

Résumé du poste

Pauwels Consulting is seeking a senior developer to join a Brussels-based energy sector client’s internal monitoring platform team. You will architect and maintain resilient Python-based software that monitors health and coordinates operational notifications for large-scale energy infrastructure.

You will design and optimize Python services with FastAPI and Pydantic, implement CI/CD pipelines, and ensure security and scalability in event-driven architectures.

Qualifications

• 6+ years of professional software development experience.
• 3+ years backend development using Python, FastAPI and Pydantic.
• Strong AsyncIO experience.
• Hands-on with SQL databases (MSSQL or PostgreSQL).
• Experience with RabbitMQ and message-driven architectures.
• Knowledge of service-based and event-driven systems.
• Solid understanding of design patterns, data structures, and algorithms.
• Experience implementing IT security requirements in critical infrastructure.
• Experience working in Agile environments.
• Fluent English with good Dutch and/or French.

Responsabilités

• Architect and optimize Python-based applications for core business activities.
• Collaborate with stakeholders to define technical specs and requirements.
• Implement code quality, testing, and CI/CD practices.
• Mentor team through code reviews and technical leadership.
• Troubleshoot and resolve complex issues in monitoring and alerting engines.
• Ensure security, scalability and maintainability of event-driven solutions.

Connaissances

Python

FastAPI

Pydantic

AsyncIO

SQL

MSSQL

PostgreSQL

RabbitMQ

Event-driven

Design patterns

Data structures

Algorithms

IT security

Agile

English

Dutch

French

Outils

Docker

CI/CD

Azure

Selenium

Description du poste

Our client, a leading organization in the energy sector, is seeking a developer to join their internal monitoring platform team. This role focuses on architecting and maintaining resilient software solutions that monitor application health and coordinate critical operational notifications for large-scale energy infrastructure.

• Architect and optimize Python-based software applications for core business activities.
• Collaborate with stakeholders to define technical specifications and gather requirements.
• Implement best practices for code quality, testing, and CI/CD pipelines.
• Mentor team members through code reviews and technical leadership.
• Troubleshoot and resolve complex technical issues within the monitoring and alerting engines.
• Ensure the security, scalability, and maintainability of event-driven solutions.

• 6+ years of experience in software development.
• 3+ years of expertise in backend development with Python, FastAPI, and Pydantic.
• You possess strong experience with AsyncIO.
• You have a solid background in data and integration using SQL, specifically MSSQL or PostgreSQL.
• You bring experience with message brokers such as RabbitMQ.
• You possess deep knowledge of service-based architectures and event-driven systems.
• You have a strong understanding of software design patterns, data structures, and algorithms.
• You're experienced in implementing IT security requirements within critical infrastructure environments.
• You bring experience working in Agile environments and have a proactive, solution-oriented mindset.
• You are fluent in English with a good level of Dutch and/or French.

Nice to Haves

• Experience with Azure cloud services.
• Knowledge of NoSQL solutions and test automation frameworks like Selenium.
• Familiarity with containerization using Docker and CI/CD deployment pipelines.
• Experience with legacy code refactoring initiatives.
• Proficiency in German.

• Work regime: Full-time.
• Location: Brussels.
• Working model: Hybrid with 2 days onsite per week.
• Contract: open to both permanent employees and freelancers.