Full Stack Engineer for NN's Internal Developer Portal

NN Personeel B.V.; Den Haag; On-site; EUR 56,000 - 75,000; Full time

Benefits offered by this job

13th month

Holiday allowance

BeFrank pension

Training budget

NS Business Card

Home office allowance

Internet allowance

Job summary

NN is seeking a talented Full Stack Engineer for its Zelda team within NN’s Engineering Experience & Platforms department to help make the Internal Developer Portal easy to use and reliable for contributors and teams alike.

You’ll work with AWS, Kubernetes, TypeScript, React, Node.js, Postgres and OpenSearch, collaborating across NN to strengthen CI/CD, testing and API integration, while ensuring smooth, scalable product delivery.

Qualifications

• 6+ years of engineering experience.
• Strong knowledge of TypeScript, Node.js and React.
• Interest in platform engineering and Backstage.
• Focus on user and contributor experience.
• Able to collaborate across teams and turn feedback into improvements.

Responsibilities

• Work closely with engineering teams on Zelda, NN’s Internal Developer Portal.
• Understand needs of engineers, support contributions and timelines.
• Blend hands-on coding with cross-team collaboration.
• Improve portal by building platform components and scaffolding.
• Strengthen CI/CD processes and automated testing.
• Shape API integration patterns with proper authorization.
• Help ensure transparent questions, decisions and knowledge sharing.

Skills

Full stack

6+ years experience

TypeScript

Node.js

React

Customer mindset

Tools

AWS

Kubernetes

Postgres

OpenSearch

Backstage

Job description

At NN, we want engineers to spend less time figuring out how to get things done and more time delivering great software. Our guiding idea is simple: make good things easy, and bad things hard. In both the code we build and the experience we create for the people using our platform. We are looking for a talented Full Stack Engineer for our Internal Developer Portals DX team to help make that happen. Could this be you? Read on to see if you think this is a match.

What you are going to do

• Work closely with engineering teams contributing to Zelda, NN’s Internal Developer Portal, built on the open-source Backstage framework
• Understand the needs of engineering teams, support their contributions and help them meet their own product goals and deadlines
• Combine hands‑on engineering with close collaboration across teams
• Improve the portal and the contribution experience by building platform components and scaffolding, writing linting rules and shaping API integration patterns with the right authorisation
• Strengthen CI/CD processes and automated testing
• Work with a tech stack that includes AWS, Kubernetes, TypeScript, React, Node.js, Postgres and OpenSearch
• Streamline inner source contributions by gathering feedback, triaging bugs and prioritising pull requests, while helping teams keep their own product delivery unblocked
• Keep teams aligned through shared channels, ensuring that questions, decisions and knowledge are transparently shared with everyone involved
• Help shape how we use AI coding agents by improving the guidance, workflows and tools used by both contributors and the agents they work with

What we offer you

• Salary between €5,030 and €6,707 based on a 40-hour working week 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 3 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 are a full stack engineer with a strong customer mindset and care about the experience of the people using and contributing to the products you build
• You are comfortable balancing technical quality with real‑world user and contributor needs
• You bring at least 6 years of engineering experience, including experience with TypeScript, Node.js and React
• You have an interest in platform engineering and are keen to work with Backstage, APIs and authorisation, cloud technologies, CI/CD, scaffolding and automated testing
• You communicate clearly and enjoy collaborating across different teams
• You are able to turn feedback into practical improvements
• You are eager to learn, do not expect to know everything from day one and actively share what you discover

Who you will work with

You’ll join the Zelda team within NN’s Engineering Experience & Platforms department. We’ve adopted Marty Cagan’s “No Asshole” rule: we’re looking for people who are good at what they do, and nice to work with. You’ll collaborate with teams across NN, including ServiceNow, Andromeda (Container as a Service) and Asgard (Managed API Gateway), as well as colleagues in architecture and security. Together, you’ll help improve how teams build, contribute to and deliver on our platforms.

Will you be our new colleague?

We value the knowledge and expertise you bring. We believe that your commitment can take our organization to a higher level. That is why we would like to get to know you.

Any questions? Do you have any questions about the job or the procedure?

Please contact Liselotte van der Zeeuw – Senior Talent Acquisition Specialist Tech & Data, via [e-mail].

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. We support you with a wide range of learning opportunities and a generous training budget to help you reach your full potential.
• 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.