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Backend Developer (Freelance)

🇧🇪 Belgium

Management

Node.js

Java

Python

PHP

Docker

Kubernetes

AWS

GCP

Azure

PostgreSQL

MySQL

MongoDB

GraphQL

Git

Project Management

Backend

Frontend

Devops

Testing

Backend Developer (Freelance)

from 🇧🇪 Belgium

Passionate about tech, digital, and innovation? Join the 1,800 employees at Smile, the European leader in open-source integration, spread across 20 agencies in 9 countries. Collaborative spirit and knowledge sharing are at the heart of our DNA. Our experts push the boundaries of open source every day to build a smarter, more efficient, and more responsible digital world. Here, we don't just follow trends, we create them! 🌟 Join Smile in Brussels and take part in projects that truly matter! 🏆

We are currently looking for a talentedBackend Developer (Freelance) to join our dynamic team and work on high-impact projects for one of our major clients.

Position Overview

  • Status: Freelance

  • Location: Brussels, Belgium (Hybrid model: 2-3 days of remote work per week)

Your Responsibilities

As a Backend Developer, your daily missions will include:

  • Designing and developing robust, scalable, and high-performance backend APIs and microservices.

  • Ensuring code quality through rigorous testing (unit, integration) and continuous integration/continuous deployment (CI/CD) pipelines.

  • Collaborating closely with Frontend Developers, Product Owners, and DevOps engineers to deliver seamless digital solutions.

  • Optimizing applications for maximum speed, security, and scalability.

  • Troubleshooting and debugging production issues to maintain high system availability.

  • (For Senior profiles)Mentoring junior team members, driving technical architecture decisions, and championing best development practices.

Profile & Technical Skills

  • Strong experience in backend development using modern open-source languages and frameworks (e.g., Python, Node.js, Java, PHP, or Go).

  • Solid understanding of relational and non-relational databases (e.g., PostgreSQL, MySQL, MongoDB).

  • Familiarity with RESTful APIs, GraphQL, and microservices architecture.

  • Experience with cloud platforms (AWS, Azure, or GCP) and containerization (Docker, Kubernetes) is a strong asset.

  • Good understanding of Git, CI/CD tools, and agile methodologies (Scrum/Kanban).

  • Excellent problem-solving skills and a strong team spirit.

  • Language: Professional fluency in English. Knowledge of French or Dutch is a plus.

Why Smile?

  • Proximity Management: Our management by peers fosters open dialogue and the implementation of a tailored career path.

  • Continuous Learning: Because the digital sector is in constant motion, Smile is committed to making you an expert in your field, thanks to a comprehensive training offer: access to an e-learning platform, financing of certifications, and knowledge-sharing tools.

  • Vibrant Culture: Your year will be animated by group and agency events: annual convention, participation in trade fairs, summer party, and formal & informal afterworks.

🚀 The Next Steps

  1. First Contact: A phone call to discuss your aspirations and what we can offer you.

  2. Meeting: An opportunity to get to know each other and explore your professional background.

  3. Business Interview: A discussion with one of our experts to assess your technical skills and define your goals.

by @maxrusakovic