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Senior Frontend Engineer (Freelance)

NN Group

The Hague
Full-time, Temporary
5-10 years experience
Hybrid

Key Skills

React Native
React
TypeScript
AWS
GraphQL
JavaScript
Mobile Authentication
Security
API Design
Version Control
CI/CD
Testing
Agile
Software Engineering
iOS
Android

Job Description

Get ready to help drive digital change at Nationale Nederlanden (NN), one of the Netherlands' biggest financial services companies. As a Senior Frontend Engineer, you will contribute to our goal of transforming our company to a product oriented tech company. Based in The Hague, you will make a difference in over 500,000 customers' lives every day. Your new job could very well make a big difference in your work-life balance, too. We're famous for it, and you'll enjoy plenty of freedom in your role, with all the perks of hybrid working. The start date is 1st of October, with a duration of six months, with the possibility of extension.

What you are going to do
As a Senior Frontend Engineer, you will help us create a more tech-driven culture at NN. In this role, you will:

  • Work with modern technologies such as React Native, Typescript, AWS, and GraphQL
  • Build new projects from scratch and contribute to expanding or modernizing existing applications
  • Take ownership of services used directly by customers or embedded throughout the organization
  • Collaborate with a multidisciplinary team to design, develop, and maintain reliable and scalable solutions

The team owns dozens of services that support both our end users and the broader NN organization.

What we offer you

Our people are the driving force behind our organisation. We value the knowledge and expertise you bring. We believe that your temporary commitment can take our organisation to a higher level. We offer you:

  • Competitive hourly rate depending on your knowledge and experience
  • Startdate as soon as possible for +/- 6 months
  • Hybrid way of working, partly from home and partly from the office
  • International working environment with loads of knowledge sharing

Who you are
An all-round software engineer able to work comfortably on front-end projects, we are looking for someone who can develop high-quality code and have high-be curious, and actively acquires new skills, new methods and processes to make our customers even happier. The ideal candidate has passion for technology and wants to learn continuously and push the team to reach our common goals.

  • 7+ years of experience building production-grade applications with React Native, React, and TypeScript
  • Experience designing and maintaining shared libraries or SDKs, with a strong focus on API design, versioning, and backward compatibility
  • Strong understanding of mobile authentication and security, including biometrics, PIN/OTP flows, secure storage, and identity verification
  • Experience working across JavaScript and native mobile platforms (iOS/Android), collaborating on React Native bridge integrations
  • Strong software engineering practices, including testing, code quality, CI/CD, and delivering reliable, maintainable solutions in Agile teams

Who you will work with

You are going to be part of a team of unique awesome individuals with different backgrounds and cultures, we embrace diversity as an instrument to produce an even richer experience for both colleagues and customers. As all our tech departments are international with English being the main language. Relevant training will be accommodated when needed.

Any questions?

Do you have any questions about the job or the procedure? Please contact Amy Brouwer, [email protected].

Are you unsure whether you meet the criteria 100%? We would like to encourage you to apply anyway. We are curious about your unique qualities!

Core Responsibilities

You will contribute to the digital transformation of the company by building and modernizing applications using modern technologies like React Native and AWS. You will also collaborate with a multidisciplinary team to maintain reliable, scalable solutions that support both end users and the broader organization.

Requirements

The ideal candidate has 7+ years of experience in building production-grade applications with React Native, React, and TypeScript. You must have a strong understanding of mobile security, software engineering practices, and experience working across JavaScript and native mobile platforms.

Benefits

  • Hybrid working
  • International working environment
  • Knowledge sharing

About NN Group

Industry: Financial Services

Company size: 10,001+ employees

NN Group is an international financial services company, active in 10 countries, with a strong presence in a number of European countries and Japan. We are rooted in the Netherlands and have a rich history spanning 180 years. With our 16,000 colleagues, NN Group provides retirement services, pensions, insurance, banking and investments to approximately 18 million customers. NN Group includes Nationale-Nederlanden, NN, ABN AMRO Insurance, Movir, AZL, BeFrank, OHRA and Woonnu. NN Group opened for trading on 2 July 2014 on Euronext Amsterdam under the symbol ‘NN’ after its initial public offering (IPO). Throughout our history, we have merged, grown and changed, but the core of who we are has remained the same. At NN Group, we put our resources, expertise, and networks to use for the well-being of our customers, the advancement of our communities, the preservation of our planet, and for the promotion of a stable, inclusive, and sustainable economy. Our purpose is to help people care for what matters most to them. Because what matters to them matters to us.

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