Senior Full-Stack Dev (Java/Spring + React) – On-site

Keystone Solutions; Brussel Hoofdstad; Hybride; EUR 90 000 - 130 000; Plein temps

Avantages offerts par ce poste

Consultancy on-site

Diverse client projects

Learning & growth

Career progression

Values-driven culture

Résumé du poste

Keystone Solutions in Brussels is seeking an experienced IT Full-stack Developer to join client projects on-site. You will contribute both backend (Java/Spring) and frontend (React) work, delivering high-quality, scalable applications.

The role requires 6+ years of experience, strong software craftsmanship, and expertise in APIs, CI/CD, and testing. A collaborative, Agile mindset is essential for success in diverse client environments.

Qualifications

• English proficiency required; French or Dutch a plus.
• Bachelor or Master in CS or equivalent by experience.
• 6+ years of relevant experience and Agile mindset.
• Strong knowledge of React, Java, Spring, Maven, APIs, Git, CI/CD, SAST, Docker.
• Experience with API automation testing and Scrum is preferable.
• Demonstrated ability to write clean, testable code with TDD practices.

Responsabilités

• Translate requirements into high-quality code.
• Design, build, and maintain scalable backend (Java/Spring) and frontend (React).
• Collaborate with cross-functional teams to ship features.
• Integrate with external data sources and APIs.
• Ensure performance, quality, and responsiveness; apply best practices.
• Identify bottlenecks, fix bugs, and participate in CI/CD setup.

Connaissances

React

Java

Spring

Maven

REST APIs

Git

Jenkins

Docker

DDD

SOLID

Test Driven Development

Pair programming

Formation

Bachelor/Master or equivalent by experience

Outils

Jenkins

SonarQube

NexusIQ

Swagger

Docker

Groovy

Description du poste

Keystone Solutions in Brussels is seeking an experienced IT Full-stack Developer to join client projects on-site. You will contribute both backend (Java/Spring) and frontend (React) work, delivering high-quality, scalable applications.

The role requires 6+ years of experience, strong software craftsmanship, and expertise in APIs, CI/CD, and testing. A collaborative, Agile mindset is essential for success in diverse client environments.