Java Backend Developer

BucharestRemoteFull-time

AI Summary

Designs, develops and maintains scalable Java 21 and Spring Boot backend applications, including REST and SOAP APIs, Kafka-based event-driven services and automated integration tests in containerized environments.

About this 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