Hybrid Freelance Backend Developer — Open Source & APIs

Smile

Sint-Pieters-Woluwe

Hybride

EUR 83 000 - 165 000

Plein temps

Il y a 23 heures
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Résumé du poste

Smile in Brussels is seeking a freelance Backend Developer to join our dynamic team on high-impact projects for a major client. The role is hybrid (2-3 days remote per week) with a focus on scalable APIs, microservices, and cloud-native architecture.

The candidate should have strong expertise in Python/Node.js/Java/Go, databases, REST/GraphQL, and Docker/Kubernetes. English is required; French or Dutch is a plus.

Qualifications

  • Proven experience building scalable backend APIs and microservices.
  • Strong knowledge of relational and non-relational databases.
  • Experience with cloud platforms and containerization is a plus.
  • Professional fluency in English; French or Dutch is a plus.

Responsabilités

  • Design and develop robust backend APIs and microservices.
  • Ensure code quality with unit/integration tests and CI/CD.
  • Collaborate with frontend, product owners, and DevOps.
  • Optimize for speed, security, and scalability.
  • Troubleshoot production issues to maintain availability.
  • Senior profiles: mentor juniors and drive architecture decisions.

Connaissances

Backend development
Python
Node.js
Java
Go

Outils

PostgreSQL
MySQL
MongoDB
RESTful APIs
GraphQL
Docker
Kubernetes
CI/CD
Git

Description du poste

Smile in Brussels is seeking a freelance Backend Developer to join our dynamic team on high-impact projects for a major client. The role is hybrid (2-3 days remote per week) with a focus on scalable APIs, microservices, and cloud-native architecture.

The candidate should have strong expertise in Python/Node.js/Java/Go, databases, REST/GraphQL, and Docker/Kubernetes. English is required; French or Dutch is a plus.

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