Quantitative Developer

NN Personeel B.V.; Den Haag; Hybrid; EUR 66,000 - 88,000; Full time

Benefits offered by this job

13th month salary

Holiday allowance

27 vacation days

BeFrank pension

Training opportunities

NS Business Card 2nd class

Home office internet allowance

Job summary

NN Group Netherlands is seeking a Quantitative Developer to join an international team spanning The Hague and Budapest. You will develop production-quality C# code, work with AI-assisted tools, and collaborate with risk analysts to design efficient computational solutions.

The role focuses on accurate, reliable risk calculations and strong documentation. You will contribute to risk methodology implementation, support users, and benefit from extensive training, a 13th month, and generous vacation

Qualifications

• Master’s degree (WO) or PhD in a relevant field.
• Hands-on experience with producing production-quality, object-oriented software in C# or C++.
• Strong knowledge of financial or quantitative modelling and ability to implement model methodologies in software.
• Experience building software within large, complex enterprise systems is a plus.

Responsibilities

• Ensure risk calculations are accurate, reliable and efficient.
• Deliver high-quality, maintainable code with tests and documentation.
• Develop C# code and use AI-assisted tools where they improve quality and efficiency.
• Collaborate with business analysts and software engineers to design optimal computational solutions.
• Understand risk models and methodologies and implement them in software.
• Support users in understanding calculations and using systems effectively.

Skills

C# programming

C++ programming

Quantitative modelling

Software design

Education

Master’s degree (WO) or PhD in a relevant field

Tools

Visual Studio

AI-assisted coding tools

Job description

Within Group Risk Models & Analytics we have the Risk Systems and Quant Development teams who develop risk systems and calculation engines that measure the risks of NN Group, determine the capital that we need to hold and support the business in optimizing their investments from a risk/return perspective. We are looking for a Quantitative Developer. You will work as part of an international development team, split over The Hague and Budapest, and work closely with other risk teams at group and business unit level. You will report to the Head of Quant Development.

What you are going to do

• Ensure that risk calculations are accurate, reliable and computationally efficient
• Deliver high-quality, maintainable code with automated tests and clear documentation
• You will develop C# code yourself and use AI-assisted development tools where they improve quality and efficiency
• Work together with business analysts and software engineers to design the most optimal computational solutions
• Have a good understanding of the risk models and methodologies that we implement
• Support users in understanding calculation results, resolving issues and using the systems effectively

What we offer you

We offer you:

• Salary between €5.933 and €7.910 depending on your knowledge and experience
• 13th month and holiday allowance are paid with your monthly salary
• 27 vacation days for a 5-day working week and three Diversity Days
• A modern pension administered by BeFrank
• Plenty of training and learning opportunities
• NS Business Card 2nd class, which gives you unlimited travel, also privately.
• Do you prefer to travel with your own transport? Then you can declare the kilometres travelled
• Allowances for setting up your home office and for internet use

Who you are

• You hold a Master’s degree (WO) or PhD in a relevant field and have 3–5 years of relevant professional experience
• Hands-on experience with developing production-quality, object-oriented software in C# or any similar language (e.g. C++) is strongly preferred
• Strong knowledge of financial or quantitative modelling is essential, including the ability to understand and implement model methodologies in software
• Experience developing and maintaining software within large, complex enterprise systems is an advantage
• Experience using Visual Studio is considered a plus
• Experience using AI-assisted coding tools responsibly, for example for code generation, testing or review, is an advantage
• You are self-driven and flexible, able to work independently and quickly get up to speed in a new environment

Who you will work with

As part of the Quant Development Methodology team in NN Group Risk you’ll become part of a hard-working, international team with professional and expert colleagues.

Our team works together in a hybrid manner as part of the team is based in The Hague and part is based in Budapest with occational travelling to meet the whole team face-to-face.

There is also close cooperation with the Risk Systems team and other development teams that work on the Group Risk Systems.

You’re also part of the Group Risk Model & Analytics department where several part of the risk modelling come together from development, reporting and validation perspective.

This is a very international team. It is important to us that you continue to develop yourself.

We give you the space and the confidence to grow in your career as well as a person. We help you with: Plenty of training and learning opportunities in our Learning & Development Centre A large (international) network of colleagues who are keen to share their knowledge with you The autonomy to set out your own development path

NN Netherlands is the head office of NN Group, a financial services group with over 180 years of history, helping people care for what matters most to them. We are committed to the financial, physical, and mental well-being of our colleagues and customers – through our products, services, and meaningful advice.

Benefits of working for NN Group Netherlands

Continuous development – Your career progression matters.

Meaningful impact – At NN, we invest our time and expertise in making a meaningful difference – for people and the planet.

Purpose‑driven work is part of our DNA.

Work‑life balance – Vitality is key. Our diverse health and well‑being offerings help you stay energised and balanced, both at work and beyond.

Diversity & Inclusion

Our approach to diversity and inclusion is simple. It is about embracing everyone. Our networks play a crucial role in achieving our D&I goals. They aim for meaningful change and create many opportunities to engage, connect and support colleagues. Everyone at NN can take an active part in multiple networks including NN Pride, NN Cultural Diversity Network, NN Young Professionals, Woman in Leadership Network and NN Neurodiversity network.

Top Employer

We are proud to be certified as a Top Employer for the 15th year in a row in 2026. The Top Employers Institute certificate recognizes organisations that consciously choose to put their employees first.