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Java Developer

Job Description

Location: Tubize, Belgium

Mission:

Within the Engineering division of THALES Belgium, the Software Engineering discipline is
responsible for all the software development activities on products, projects and services
provided to customers worldwide.

In this role, you will be part of a dynamic team delivering our suite of sovereign cryptographic
products. You will be responsible for designing, developing, and testing software systems,
ensuring the highest standards of security and compliance.

Responsibilities:

Design & Development
Develop high-quality, secure, and efficient applications using programming
languages like Java and Angular to build software components.
Implement complex algorithms and protocols for secure communication and data protection.
Actively participate and contribute to Agile Scrum ceremonies.
Collaborate closely with cross-functional teams to ensure timely delivery of
features and enhancements.
Testing & Validation
Perform rigorous testing and validation of application software to ensure
functionality, performance, and security.
Develop and execute unit tests and integration tests to verify software quality.
Use tools and frameworks to automate testing processes.
Perform code reviews to identify vulnerabilities, improve quality, etc.
Documentation & Compliance
Maintain thorough documentation of software designs, specifications, and testing procedures.
Ensure compliance with industry standards, regulations, best practices and
Thales processes.
Prepare and maintain documentation for security accreditations and reviews.
Troubleshooting & Support
Provide technical support and troubleshooting for deployed application software.
Analyze and resolve complex software problems in a timely manner.

Profile
Bachelor’s or Master’s degree in Computer Science, Software Engineering, or
a related field.
Proven experience in application software development, preferably within the
defense or aerospace industries.

Proficiency in Java (11+) and Spring framework (e.g. Spring Boot, Spring
Security,...).
Strong understanding of software architecture, design patterns and best
practices.
Knowledge of DevSecOps practices and tools (e.g. Jenkins, Git,
Kubernetes,...).
Strong problem-solving skills and attention to detail.
Ability to work effectively in a team-oriented, collaborative environment.
Excellent command of English.
Eligibility for a Belgian security habilitation.


Preferred qualifications
Experience with cryptographic protocols and secure communication
technologies.
Knowledge of the network stack and protocols.
Proven experience in developing REST APIs.
Experience with secure coding practices and encryption algorithms.
Experience in pre and/or post-quantum cryptography.
Knowledge of French.
Experience working with HSM.

YOUR CAREER AT THALES

Future opportunities will allow you to discover other domains or sites. You will be able to evolve and grow your competencies in different areas:

Room and attention to personal development
Build your talents in another domain of Thales Group, discovering new products, new customers, new country or go to a more complex Solution
Choose between a technical expertise or a leadership path
Build an international career within a leading Engineering Group

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Job Details

Category
Software
Employment Type
Full Time
Location
Tubize
Posted
Apr 22, 2026, 08:00 PM
Listed
Apr 23, 2026, 01:18 PM

About Thales Alenia Space

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