Freelance Full Stack Engineer (Java, Spring Boot, React) | 6-Month Contract | Amsterdam Hybrid

NTT DATA

is looking for a freelance

Full Stack Engineer (Java + React)

for an international client in Amsterdam.

Amsterdam, Netherlands (Hybrid)

6-Month Contract (Extension Possible)

Start Date: ASAP

About the Opportunity

We're looking for experienced Full Stack Engineers to join a large-scale technology program for a leading digital business. This is a freelance contract opportunity where you'll contribute to customer-facing products used by a large international user base.

You'll work in modern engineering teams building scalable applications using Java, Spring Boot, microservices, cloud technologies, and React on the frontend. While this is a Full Stack role, strong backend engineering capabilities are essential.

Your role:

Build and maintain scalable backend services using Java and Spring Boot

Develop modern frontend applications using React.js

Design and build APIs and microservices

Contribute to customer-facing features and platform improvements

Collaborate with Product, Engineering, and Architecture teams

Write clean, maintainable, and well-tested code

Participate in design discussions and technical decision-making

Support deployments, monitoring, and production operations

Contribute to continuous delivery and engineering best practices

Required Skills

Strong experience with Java and Spring Boot

Experience building microservices and distributed systems

Experience building customer-facing applications

Experience with SQL and/or NoSQL databases

Understanding of scalable architectures

Experience working in Agile environments

Ability to demonstrate measurable project impact

Nice to Have

Kafka or event-driven architectures

AWS

Docker

Experience supporting high-traffic applications

FinTech, Payments, Banking, or regulated industry experience

What We're Looking For

We value engineers who can clearly demonstrate:

Ownership of features from design through production

Experience building scalable customer-facing platforms

#J-18808-Ljbffr