Remote-Friendly Senior Java Backend (Spring Boot)

Qualysoft GmbH; United States; Remote; USD 110,000 - 170,000; Full time

Benefits offered by this job

Premium medical package

Lunch tickets

Bookster subscription

13th salary

Stable multinational with startup vibe

Flexible remote work

Job summary

Qualysoft GmbH is seeking an experienced backend engineer to design, develop, and maintain scalable Java 21/Spring Boot applications. You’ll build REST/SOAP APIs, implement Kafka-based event-driven architectures, and work with SQL databases while ensuring test automation with TestContainers.

You will collaborate with cross-functional teams, participate in code reviews, and contribute to deployment and monitoring in containerized environments.

Qualifications

• Design, develop, and maintain scalable backend applications using Java 21 and Spring Boot.
• Develop and integrate REST and SOAP APIs to enable communication between internal and external systems.
• Implement and maintain event-driven architectures using Apache Kafka for asynchronous communication between services.
• Work with SQL databases, including database design, query optimization, and data persistence.
• Develop and maintain automated integration tests using TestContainers to ensure application reliability and quality.
• Troubleshoot, debug, and optimize backend applications to improve performance, stability, and scalability.
• Collaborate with cross-functional teams, including developers, QA engineers, and business analysts, to deliver reliable software solutions.
• Participate in code reviews, technical discussions, and continuous improvement of development practices.
• Contribute to application deployment, monitoring, and maintenance in containerized environments.

Responsibilities

• Design, develop, and maintain scalable backend applications using Java 21 and Spring Boot.
• Develop and integrate REST and SOAP APIs to enable communication between internal and external systems.
• Implement and maintain event-driven architectures using Apache Kafka for asynchronous communication between services.
• Work with SQL databases, including database design, query optimization, and data persistence.
• Develop and maintain automated integration tests using TestContainers to ensure application reliability and quality.
• Troubleshoot, debug, and optimize backend applications to improve performance, stability, and scalability.
• Collaborate with cross-functional teams, including developers, QA engineers, and business analysts, to deliver reliable software solutions.
• Participate in code reviews, technical discussions, and continuous improvement of development practices.
• Contribute to application deployment, monitoring, and maintenance in containerized environments.

Skills

Collaborative teamwork

Code reviews

Troubleshooting

Tools

Java 21

Spring Boot

REST APIs

SOAP APIs

Apache Kafka

SQL databases

TestContainers

OpenShift

Kubernetes

Docker

Cloud-native

Job description

Qualysoft GmbH is seeking an experienced backend engineer to design, develop, and maintain scalable Java 21/Spring Boot applications. You’ll build REST/SOAP APIs, implement Kafka-based event-driven architectures, and work with SQL databases while ensuring test automation with TestContainers.

You will collaborate with cross-functional teams, participate in code reviews, and contribute to deployment and monitoring in containerized environments.