Senior Full-Stack Engineer: Cloud, APIs & Secure Apps

act digital; Brussel Hoofdstad; On-site; EUR 90,000 - 130,000; Full time

Job summary

Act Digital is seeking a Senior Full-stack Software Engineer for a leading European institution in Brussels. You will design frontend architecture, implement backend services, and ensure secure, scalable solutions across the stack.

Responsibilities include developing APIs, integrating cloud deployments via CI/CD, and writing documentation. Fluency in English required; French is a plus. This is a long-term, full-time role on-site in Brussels.

Qualifications

• University degree(s) per Level 7 EQF with 15+ IT years
• Or Level 6 EQF with 17+ IT years
• Java programmer certification
• DeepLearning certificate

Responsibilities

• Develop front-end architecture and UI interactions
• Develop back-end applications and core business logic
• Design and develop RESTful APIs and OpenAPI docs
• Deploy and manage cloud-based apps with CI/CD and containers
• Write technical documentation and perform testing

Skills

Front-end frameworks

Backend stacks (Java/Node/PHP)

REST API design

CI/CD processes

Team collaboration

English communication

Education

Master's degree (Level 7 EQF)

Bachelor's degree (Level 6 EQF)

Tools

Docker

Kubernetes

Spring Boot

Hibernate

Git workflows

OpenAPI/Swagger

Terraform/AWS/CloudFormation

AWS/Azure cloud

Job description

Act Digital is seeking a Senior Full-stack Software Engineer for a leading European institution in Brussels. You will design frontend architecture, implement backend services, and ensure secure, scalable solutions across the stack.

Responsibilities include developing APIs, integrating cloud deployments via CI/CD, and writing documentation. Fluency in English required; French is a plus. This is a long-term, full-time role on-site in Brussels.