Oracle/Apex Developer

Introduction

For more than half a century, Serco has walked alongside the pioneers of space. Serco has supported over 50 ESA missions where our teams have helped launch satellites, guide spacecraft across the void and turn data into discoveries that reshape our world.
With thousands of specialists contributing across the entire space lifecycle, from engineering support and satellite testing to launch services, LEOP, operations and surveillance, we have become a trusted force in national and European space strategies. And now, the next chapter could include you.
On behalf of our team in the Netherlands, we are looking for a talented Oracle APEX Developer to support the European Space Agency at ESTEC.

The Community You’ll Step Into
Every day at ESTEC, you join a community where collaboration feels natural. Engineers, analysts, database specialists and project managers work side by side, building systems that support Europe’s most ambitious space missions. It’s an environment where ideas move quickly and where people rely on one another to turn complex problems into practical solutions.
Within Serco, you will be part of a supportive and knowledgeable team that values technical excellence, open communication and a genuine interest in helping colleagues succeed. You will work closely with ESA counterparts who depend on robust, secure and well-designed applications to support operations, reporting and decision-making across a wide range of programmes.

The Difference You Will Make
The tools and applications you develop will be used daily by ESA teams who rely on accurate data, efficient processes and intuitive interfaces to perform their work. By creating solutions that are reliable, secure and easy to use, you help streamline operations and reduce the complexity behind mission-critical activities.
Your contribution strengthens Serco’s reputation as a trusted partner by delivering software that meets high standards of performance and security. Through your work, you support better decision-making, improve workflows and help ESA teams focus on the technical and scientific goals that drive Europe’s space programmes.
In this role, your impact reaches beyond the code you write. You help create stability, clarity and efficiency across systems that support some of Europe’s most important missions.

What You'll Do

As an Oracle APEX Developer, you will take part in the full lifecycle of application development that supports ESA’s internal teams. You will design, develop and improve APEX-based solutions, turning business needs into secure, scalable and user-friendly applications. You will write efficient SQL and PL/SQL to support complex logic, data flows and integrations, ensuring the systems you develop are robust and optimised.
Your work will involve collaborating closely with ESA stakeholders to understand requirements and translate them into technical designs. You will build modern interfaces using HTML, CSS, JavaScript, jQuery and AJAX, ensuring a smooth and intuitive user experience. You will support integrations with other systems, contribute to performance improvements and ensure applications meet strong security and quality standards.
You will stay engaged with emerging Oracle features and new web technologies, bringing fresh ideas into the service and helping improve development practices over time.

What You Bring

You bring experience in Oracle APEX development and feel confident working with Oracle Database technologies. You enjoy designing clean, efficient solutions and have a strong command of SQL and PL/SQL. Because this role also involves partial DBA responsibilities, you are comfortable managing and maintaining database environments, ensuring they remain stable, secure and optimised for performance.
You are familiar with web technologies like HTML, CSS and JavaScript, and you can build interfaces that feel intuitive and responsive. Your background includes exposure to REST APIs, system integrations and modern development practices. You communicate clearly, think analytically and enjoy solving problems in a structured way. You can manage multiple priorities and feel comfortable working in an agile or fast-moving environment.
Experience with languages such as C#, .NET or Python adds versatility to your profile, as does familiarity with additional database technologies like PostgreSQL, SQL Server or MySQL. Above all, you bring curiosity, professionalism and a collaborative mindset, along with the desire to contribute to a meaningful mission.
To work on site at ESA-ESTEC, you must also hold EU nationality.

What We Offer: More than just a job

At Serco, we believe that a career should come with more than just a paycheck, it should provide support, security, and a sense of balance in your life. Your salary will be paid promptly on Fridays before the 28th of each month, giving you peace of mind about your finances. To recognize your dedication over the year, you’ll also receive a Holiday Bonus, calculated as 8% of your basic gross salary, adding an extra boost when you need it most.
We support your daily life and commute in practical ways. If you travel to work, you can claim a travel allowance of €0.21 per kilometre for up to 150 km, or you can have your public transport fully reimbursed. For those working from home, there’s a small daily allowance of €2 to cover extra costs, and new employees can be reimbursed up to €500 for a desk or chair to make their home workspace comfortable.
When your work takes you on missions or travel, all business-related expenses are fully covered, and for peace of mind during tax season, our appointed advisor will assist you in completing your income tax forms. If you enjoy cycling, our bicycle scheme allows you to benefit from a tax-efficient allowance of up to €749, one year of full insurance with an additional €89 per year for accessories.
Serco also cares about your long-term security. All employees are covered under a collective life insurance scheme, and our health insurance partnership with Zilverenkruis Achmea offers discounts of 5% on basic coverage and up to 10% on additional plans. Our company pension scheme, managed via Nationale Nederlanden, follows the Dutch State Pension framework, ensuring you can plan confidently for the future.
In addition, in emergency situations, you may request an advance salary payment of up to one month’s net salary at the discretion of your line manager. To support your wellbeing and daily work, we offer up to €250 reimbursement for work glasses to reduce blue light strain and provide access to Benefits & Work, offering multiple discounts for online shopping. For lifelong learning, all employees receive a 35% discount on programs at Webster University.
At Serco, our benefits are designed to make your life easier, healthier, and more flexible, so you can focus on contributing to groundbreaking space missions while feeling supported every step of the way.

Relocation
The Netherlands' central location in Europe makes it an ideal base for travel and business within the EU. Major cities are well-connected by road, rail, and air with Amsterdam Schiphol Airport one of Europe's busiest and most well-connected airports, facilitating easy international travel.
Serco offers relocation support for all EU passport holders that are planning to relocate to the Netherlands and work for Serco B.V.