Back-end developer

Confidential

Brussels, Brussels, Belgium permanent

Posted: February 16, 2026

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Quick Summary

Developing back-end applications for a leading service provider, with a focus on scalability, security, and optimization.

Required Skills

Back-end Development API Development Database Management Security Data Storage Performance Optimization API Design Project Leadership Code Organization Troubleshooting

Job Description

Tasks for External Service Provider:

• Development of back-end website applications.

• Integration of user-facing elements developed by a front-end developer with server-side logic.

• Implement core business logic.

• Creation of servers and databases for functionality.

• Design and implementation of data storage solutions.

• Understanding and implementation of security and data protection.

• Optimization of the application for maximum speed and scalability.

• Design and develop APIs.

• Participating in the design and creation of scalable software.

• Taking lead on projects, as needed.

• 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.

• Testing and fixing bugs or other coding issues.

• Meet both technical and consumer needs.

• Write technical documentation.

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