Senior Frontend Engineer | React Native/TypeScript | Hybrid

NN; Den Haag; Hybrid; EUR 96,000 - 152,000; Full time

Benefits offered by this job

Hybrid working

International environment

Competitive hourly rate

Job summary

Nationale Nederlanden (NN) in The Hague is seeking a Senior Frontend Engineer ( Freelance) to help transform NN into a product-oriented tech company. The role is based in The Hague with a hybrid work setup, starting 1 October for six months with possible extension.

You will build new projects, own customer-facing services, and collaborate with diverse teams to deliver scalable frontend solutions. Ideal candidates have 7+ years of experience with React Native, React, and TypeScript, plus strong

Qualifications

• 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.

Responsibilities

• Build new projects from scratch and modernize existing apps.
• Own services used by customers and internal teams.
• Collaborate with multidisciplinary teams to design and maintain scalable solutions.
• Work with modern technologies such as React Native, TypeScript, AWS, and GraphQL.
• Ensure high-quality code with testing, CI/CD practices.

Skills

React Native

React

TypeScript

API design

Versioning

Backward compatibility

Mobile authentication

Cross-platform (iOS/Android)

Testing

CI/CD

Agile teams

Code quality

Tools

GraphQL

AWS

Job description

Nationale Nederlanden (NN) in The Hague is seeking a Senior Frontend Engineer ( Freelance) to help transform NN into a product-oriented tech company. The role is based in The Hague with a hybrid work setup, starting 1 October for six months with possible extension.

You will build new projects, own customer-facing services, and collaborate with diverse teams to deliver scalable frontend solutions. Ideal candidates have 7+ years of experience with React Native, React, and TypeScript, plus strong