We are seeking an experienced Principal Software Engineer with 12–18 years of hands‑on expertise in Java/J2EE, REST/SOAP, JPA, Oracle/PostgreSQL, and modern messaging platforms such as Kafka and other Message Queues. The ideal candidate will be responsible for designing scalable enterprise payments applications, guiding junior developers, and driving solution excellence across projects.
Responsibilities- Design, develop, and maintain high‑performance, scalable enterprise applications using Java/J2EE.
- Architect and implement RESTful and SOAP-based web services.
- Design and optimize relational database structures and queries (Oracle/PostgreSQL).
- Work extensively with JPA/Hibernate for ORM and data persistence.
- Develop distributed, event-driven systems using Kafka or other messaging platforms.
- Implement asynchronous processing models, message queues, and event-streaming pipelines.
- Lead code reviews, ensure code quality standards, and mentor junior engineers.
- Collaborate with cross-functional teams including architects, DevOps, QA, and product owners.
- Troubleshoot complex issues across application layers, performance tune, and improve system reliability.
- Contribute to system design discussions, architecture decisions, and technical roadmaps.
- Bachelor’s or Master’s degree in Computer Science, Information Technology, or related field.
- Strong communication and documentation skills.
- Ability to lead technically and collaborate effectively.
- Ownership mindset and ability to work independently.
- Mentoring and team leadership capabilities.
- Good understanding of Payments and Banking domain.
- Strong proficiency in Java/J2EE, multithreading, collections, and design patterns.
- Hands‑on experience with REST API development and SOAP services.
- In‑depth knowledge of JPA, Hibernate, or other ORM frameworks.
- Strong database experience with Oracle and/or PostgreSQL including SQL, PL/SQL, indexing, performance tuning.
- Experience with Kafka, RabbitMQ, ActiveMQ, or other messaging systems.
- Solid understanding of microservices architecture and distributed systems.
- Familiarity with CI/CD tools (Jenkins, GitLab CI, etc.).
- Experience with application servers (WebLogic, JBoss, Tomcat).
- Strong analytical, debugging, and problem‑solving skills.
Why should you join Diebold Nixdorf?
Brightest minds + technology and innovation + business transformation The people of Diebold Nixdorf are 23,000+ teammates of diverse talents and expertise in more than 130 countries, harnessing future technologies to deliver personalized, secure consumer experiences that connect people to commerce. Our culture is fueled by our values of collaboration, decisiveness, urgency, willingness to change, and accountability.
–Diebold Nixdorf is an equal opportunity employer and we value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, gender identity, age, marital status, veteran status, or disability status.
** To all recruitment agencies: Diebold Nixdorf does not accept agency resumes. Please do not forward resumes to our jobs alias, Diebold Nixdorf employees or any other organization location. Diebold Nixdorf is not responsible for any fees related to unsolicited resumes**
We are a global Company operating in multiple Locations and Entities. As we are keen to find the best solution for our candidates several legal entities might be applicable for a Job offer. A List of our operating entities can be found here - https://www.dieboldnixdorf.com/en-us/about-us/global-locations
