Junior/Middle Java Developer

Helpware Inc.; Amsterdam; Hybrid; EUR 45,000 - 65,000; Full time

Job summary

Helpware Inc. is seeking a Junior/Middle Java Developer to join our engineering team in Amsterdam. You will design, implement, and maintain backend services using Java and Spring Boot, contributing to microservices and distributed systems in a production environment.

You will collaborate with the Engineering Manager, Product Owner, and peers to deliver reliable, scalable solutions. The role offers a hybrid office model and an initial 6+ month contract with ASAP start.

Qualifications

• 2–3 years of relevant software development experience.
• Solid foundation in Java and Spring Boot.
• Understanding of microservices and distributed systems.
• Knowledge of SQL and NoSQL databases.
• Strong problem-solving and teamwork skills.
• Bachelor's degree in CS/SE or related field.

Responsibilities

• Develop, test, and maintain backend services with Java and Spring Boot.
• Build and maintain microservices and distributed systems.
• Develop and support customer-facing applications.
• Write clean, readable, maintainable code following best practices.
• Apply design principles such as SOLID and DRY.
• Work with SQL and NoSQL databases.
• Contribute to deployment, monitoring, and production support.

Skills

Java

Spring Boot

Microservices

SQL/NoSQL databases

OOP

Testing

Deployment

Communication

Education

Bachelor's degree in Computer Science or related field

Job description

About the Role

We are looking for a Junior/Middle Java Developer to join the engineering team and contribute to the development of reliable, scalable, and high-quality backend solutions.

In this role, you will work closely with the Engineering Manager, Product Owner, and other developers to build and maintain backend services and customer-facing applications. You will have the opportunity to work with Java, Spring Boot, microservices, and distributed systems while developing your software engineering skills in a collaborative environment.

We are looking for someone with a solid foundation in Java development, an understanding of backend architecture, and an interest in building and maintaining production applications.

Location: Amsterdam, the Netherlands
Working Model: Hybrid - 2 days per week in the office
Contract Duration: 6+ months
Start Date: ASAP
Experience: 2-3 years of relevant experience
Education: Bachelor's degree

Key Responsibilities

Backend Development

• Develop, test, and maintain backend services and applications using Java and Spring Boot.
• Build and maintain microservices and contribute to distributed systems.
• Develop and support customer-facing applications.
• Write clean, readable, reusable, and maintainable code following software engineering best practices.
• Apply appropriate design patterns and principles such as SOLID and DRY.
• Work with SQL and NoSQL databases.

Production Ownership and Reliability

• Contribute to the deployment, monitoring, and maintenance of applications in production.
• Monitor application health and performance and help identify and resolve issues.
• Participate in troubleshooting and root cause analysis of technical incidents.
• Help improve application reliability, performance, and stability.
• Maintain technical documentation and follow established operational practices.

Software Design and Quality

• Contribute to technical design discussions and help implement solutions that meet business requirements.
• Write and maintain automated tests to ensure code quality.
• Participate in code reviews and refactoring activities.
• Follow security, data integrity, and quality standards.
• Identify opportunities to improve existing code, systems, and development processes.

Collaboration and Communication

• Collaborate with developers, the Engineering Manager, and the Product Owner.
• Communicate technical challenges clearly and ask relevant questions when needed.
• Contribute to team discussions and continuous improvement initiatives.

Requirements

• 1-3 years of relevant software development experience.
• Practical experience with Java.
• Experience with or a good understanding of Spring Boot.
• Understanding of microservices architecture and distributed systems.
• Knowledge of SQL and/or NoSQL databases.
• Understanding of object-oriented programming, common design patterns, and software engineering best practices.
• Familiarity with automated testing, debugging, and troubleshooting.
• Basic understanding of application deployment, monitoring, and production support.
• Strong analytical and problem-solving skills.
• Good communication and teamwork skills.
• Bachelor's degree in Computer Science, Software Engineering, or a related field.

Work Arrangement

• Based in Amsterdam, the Netherlands.
• Hybrid work model, with 2 days per week in the office.
• Initial contract duration of 6+ months.
• ASAP start date.