Java Backend Developer

About the role

About Qualysoft

· 25 years of experience in software engineering, established in Vienna, Austria

· Active in Romania since 2007, with office in central Bucharest (Bd. Iancu de Hunedoara 54B)

· Delivering End to End IT Consulting Services - From Team Augmentation and Dedicated Teams to Custom Software Development

· We deliver scalable enterprise systems, intelligent automation frameworks, and digital transformation platforms

· Cross-industry experience by sustaining global players in BSFI (Banking, financial services and insurance), Telecom,Retail & E-commerce, Energy and Utilities, Automotive, Manufacturing, Logitics, High Tech

· Global Presence: Switzerland, Germany, Austria, Sweden, Hungary, Slovakia, Serbia, Romania, and Indonesia

· International team of 500+ software engineers

· Strategic partnerships: Microsoft Cloud Certified Partner, Tricentis Solutions Partner in Test Automation and Test Management, Creatio Exclusive Partner, Doxee Implementation Partner

· Powered by cutting-edge technologies: AI, Data & Analytics, Cloud, DevOps, IoT, and Test Automation.

· Project beneficiaries ranging from large-scale enterprises to startups

· Stable growth and revenue increase year over year, a resilient organisation in volatile IT market conditions

· Quality-first mindset, culture of innovation, and long-term client partnerships

· Global and local reach – trusted by key industry players in Europe and the US

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.

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.