Junior Full Stack Developer in Amsterdam

Junior Full Stack Developer (Java / React.js) Location:

Amsterdam Working Model:

Hybrid – Hybrid – working from the Amsterdam office a couple of days a week. Start Date:

ASAP

About the Role We are looking for a

Junior Full Stack Developer

to join an engineering team in Amsterdam. You will contribute to building and maintaining software applications across both backend and frontend.

The role combines

Java and Spring Boot development on the backend

with

React.js on the frontend . While this is a Full Stack position, candidates will be assessed

primarily on their backend capabilities , so solid Java and Spring Boot experience is especially important.

You will work as part of an experienced engineering team, contributing to real product development and gradually taking ownership of your technical solutions.

What You’ll Do Software Development

Develop and maintain high-quality applications using

Java and Spring Boot .

Build and maintain frontend functionality using

React.js .

Write clean, readable, reusable and maintainable code.

Apply appropriate design patterns and development best practices.

Follow principles such as

SOLID

and

DRY .

Write unit and integration tests and contribute to overall application quality.

Refactor and improve existing code when needed.

Follow security, data integrity and coding standards.

End-to-End Ownership

Contribute to the development and maintenance of services throughout their lifecycle.

Monitor application health and performance and respond to issues when required.

Support deployment and production operations.

Contribute to technical documentation, runbooks and operational procedures.

System Design & Problem Solving

Contribute to technical and architectural discussions.

Help evaluate different approaches to solving technical problems.

Understand the impact of changes to existing systems.

Design solutions that meet current business requirements while remaining adaptable for future improvements.

Incident Management & Continuous Improvement

Support the team in investigating and resolving production issues.

Contribute to root cause analysis and long-term solutions.

Participate in postmortems and incident tracking.

Identify opportunities to improve processes, systems and application performance.

Communication & Collaboration

Work closely with developers, Engineering Managers, Product Owners and other stakeholders.

Clearly communicate technical ideas and progress.

Ask relevant questions and actively listen to understand requirements.

Collaborate with the team to find practical and effective solutions.

What We’re Looking For

1–3 years of relevant professional experience

in software development.

Commercial development experience with

Java .

Hands‑on experience with

Spring Boot .

Experience with

React.js

and frontend development.

Good understanding of software engineering fundamentals.

Understanding of

SOLID, DRY and common design patterns .

Knowledge of software testing principles and practices.

Ability to write clean, maintainable and reusable code.

Basic understanding of application architecture and system design.

Analytical and problem‑solving mindset.

Willingness to learn and develop new technical skills.

Good communication and teamwork skills.

Important Although this is a

Full Stack Developer

position, the client will assess candidates

primarily on their backend capabilities .

Therefore,

strong Java and Spring Boot skills are a key requirement , while React.js experience is required for the frontend part of the role.

We are looking for a developer who is ready to grow, take ownership of their work and develop within a professional engineering environment.

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