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# Java Software Engineer Electromagnetics & Military Operations

- **Company:** TNO
- **Location:** Den Haag, Netherlands (Remote available)
- **Salary:** €3,500.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Systems Engineering, Big Data, Business Software, C Sharp (Programming Language), C++ (Programming Language), Decision Support Systems, Python (Programming Language), Software Architecture, Software Engineering, Information Technology, Modeling and Simulation, Data Analytics, Api Design
- **Published:** July 28, 2026
- **Apply:** https://nl.indeed.com/viewjob?jk=dcabd1267c2025b0

## About the Role

* A university-level Master's degree (MSc) in a technical or scientific discipline, such as Aerospace Engineering, Mechanical Engineering, Applied Mathematics, Computer Science, or Physics, with a relevant specialization (e.g. Control & Simulation or Modelling);
 * A broad technical interest and a proven affinity for the development of models and simulations. You combine curiosity and attention to detail with the ability to understand and address complex challenges from a systems perspective;
 * Experience with Java (or alternatively C++ or C#). Experience with Python is considered a plus;
 * Excellent command of both Dutch and English, written and spoken.

Experience in a high-tech, research, or Defence environment is an advantage, but certainly not a requirement. More importantly, we are looking for someone who is curious, enjoys collaborating with others, and is eager to continuously learn and develop.

## Description

As a Java Software Engineer, you will work on software that truly makes a difference. You will develop robust applications that support researchers, analysts, and Defence personnel in tackling complex operational challenges. Combining technical depth with societal impact, you will not be building standard business software, but innovative solutions that directly contribute to the security of our society.

You will join TNO Defence, Safety & Security, within the Electromagnetics & Military Operations (E&MO) department. This multidisciplinary team brings together researchers, software engineers, systems engineers, and analysts who are dedicated to advancing defence and security technologies. Our expertise covers radar and sensing, Electronic Warfare, modelling and simulation, data analytics, and operational decision support.

Working closely with Defence organisations, academic institutions, and international partners, we develop innovative solutions that help address complex security challenges and contribute to a safer world.

At E&MO, you will be given the freedom and responsibility to take initiative, explore new concepts, and shape your own professional growth. You will collaborate with highly motivated colleagues who are passionate about turning technological innovation into practical capabilities that make a tangible difference in the field.

What will be your role?

As a Java Software Engineer, you will develop reliable and scalable software for research and innovation projects within the Electromagnetics & Military Operations (E&MO) division. You will collaborate with software engineers, researchers, scientists, systems engineers, project managers, and analysts on applications used across a wide range of Defence programmes.

Depending on your experience and interests, your work may include:

 * Designing and developing Java back-end applications and services;
 * Building data-intensive applications for analysis, simulation, and decision support;
 * Developing APIs and software components for complex systems;
 * Integrating data sources, sensors, and simulation models;
 * Improving software architectures and enhancing existing applications;
 * Testing, validating, and optimizing software for research and operational environments;
 * Developing prototypes that enable rapid exploration and validation of new technologies.

No two projects are the same. One day, you may be developing software for a next-generation sensor system; the next, you could be building an application that supports the analysis of military scenarios or developing a prototype that leverages artificial intelligence.

Working through UMBRA

You will start your journey within UMBRA, an innovative environment where new colleagues collaborate on the technological challenges of tomorrow. You will become part of a multidisciplinary team of software engineers, systems engineers, project managers, researchers, and analysts contributing to a wide variety of research and development projects.

From day one, you will work on real-world projects and have the opportunity to explore different technologies, research groups, and application domains within the E&MO division. This allows you to discover where your knowledge, experience, and ambitions can make the greatest impact. Depending on project needs and your expertise, you will collaborate with various research teams and disciplines. This variety enables you to gain experience across multiple technologies and domains while making a meaningful contribution to current Defence programmes and building a broad professional network within the division.

The strength of UMBRA lies in its unique combination of societal impact, technical challenge, and personal development. You will contribute to innovative solutions for today's Defence challenges while continuously expanding your expertise in new technologies and specialist fields.

Whether you are just starting your career or already bring extensive experience, UMBRA offers the level of responsibility and support that matches your background. Junior colleagues receive guidance from experienced professionals, while mid-level and senior engineers are given the opportunity to shape technical solutions, mentor colleagues, and play a key role in developing new areas of expertise.

What we expect from you

You are a curious and driven Software Engineer who enjoys tackling complex technical challenges and developing solutions with real societal impact.


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