Back-End Software Engineer (Brussels)

• Development of back-end website applications.
• Integration of user-facing elements developed by a front-end developers with server-side logic.
• Implement core business logic.
• Design and implementation of data storage solutions.
• Apply data and security best practices: input validation, authentication/authorization, secure storage, compliant logging and monitoring.
• Optimization of the application for maximum speed and scalability.
• Design and develop APIs.
• Participating in the design and creation of scalable software.
• Maintenance of code integrity and organisation.
• Writing clean, functional code on the back-end.
• Compile and analyse data, processes, and codes to troubleshoot problems and identify areas for improvement, including setting up and querying monitoring tools.
• Perform unit/integration testing, debug, fix, and validate code changes.
• Deliver solutions that fulfil functional and non-functional requirements and align with user expectations.
• Write technical documentation.
• Basic configuration of cloud services for back-end functionality (ex: serverless functions, storage accounts, managed Kubernetes).
• Develop and maintain services and business logic using one or more back-end programming languages.
• Implement authentication and authorization mechanisms to secure API endpoints and services.
• Write and maintain unit and integration tests to ensure code quality and reliability, integrating them into the CI/CD pipeline.

• Proficiency in back-end languages (Java, PHP) and experience with frameworks (Spring Boot, Hibernate, Node.js).
• Strong understanding of the web development cycle and programming techniques and tools.
• Experience with APM tools (Dynatrace, Splunk, Elastic APM) and knowledge of OpenTelemetry for metrics, logs, and traces.
• Proficiency in working with relational databases (e.g., PostgreSQL, Oracle, MySQL), including writing complex SQL queries and understanding database design.
• Knowledge of NoSQL document stores (MongoDB, CouchDB, CosmosDB) and understanding of consistency/performance trade-offs.
• Experience with Git workflows (GitFlow, trunk-based) and understanding of legacy systems using SVN.
• Experience in designing, building, and securing RESTful APIs and web services, including OpenAPI/Swagger documentation.
• Knowledge of containerization and orchestration technologies (e.g., Docker, Kubernetes) for developing and deploying applications.
• Understanding of authentication and authorization protocols and standards (e.g., OAuth 2.0, OpenID Connect, JWT).

Certification and/or Standards

• Optional: One of the following or an equivalent certification:

AWS Certified Developer Associate,

Microsoft Azure Developer Associate,

CNCF Certified Kubernetes Application Developer (CKAD).

Languages

English level C1

Hybrid (on-site at Brussels offices + remote)

What can you expect from us?

Mind-blowing workplace culture. You will be integrated in a professional, dynamic and collaborative team.

100% Remote opportunities

We want you to have the flexibility to work where you feel most comfortable and productive.

International Career

• You can expect professional growth and to be connect with the world.
• We are represented in Portugal, Belgium, Luxembourg, and Denmark.
• And with projects in many other countries: Netherlands, Luxembourg, Singapore and in the United States of America (and a lot more is coming…)

Extra Benefits & Perks

If you wish to work with us and you are outside European Union (good news…) we are a Tech Visa Company, We will help!

As a plus, we provide Health and Life Insurance.