Principal Java Consultant, Budapest
On-site
Budapest, Hungary
contractor
Lab49 has an opportunity available for a Lead Java Engineer to lead work on complex and challenging projects to drive transformative change for our top- tier Financial Services clients. Operating in an Agile environment, the Java Engineer will have strong server-side experience to work on next- generation financial systems.
Responsibilities
- Build distributed systems that deal with actor-based concurrency, reactive programming, distributed in-memory data grids, messaging that goes beyond plain JMS as we fully expect to participate in shaping the future of financial technology stacks
- Work on server side JVM-based projects
- Hit the ground running with the typical Java or Scala JVM ecosystem stack (Spring and its subprojects, Guice, Guava, Maven, Hibernate, Jetty, etc.)
- Retool continuously as the technology landscape changes every few years
- Be able to pick up other technologies along the whole development stack, including front-end and other non-JVM ecosystems
- Work with our clients in iterative, project-based engagements, where self-organizing and focused teams move quickly to build innovative solutions for the client
- Have the desire to collaborate, and like sharing and learning from your colleagues
- Be passionate about delivering quality code
- Demonstrate experience writing commercial-grade software applications
- Have a deep understanding of multithreading and real-time software architectures
- Have an abiding interest in and competence for solving real-world business problems (with technology as an enabler)
- Be determined to succeed despite obstacles and challenges, as well as a positive attitude favoring achievement of goals over open-ended investigation
Required Skills and Experience
- 10+ years of hands-on experience designing and building complex, software applications, commercial-grade applications in core, server-side Java, ideally Java 8+
- 5+ years of experience leading Agile teams
- Willingness to take responsibility for the team’s actions and outcomes
- Ability to proactively make informed decisions based on the project and technology understanding
- Strive to share knowledge, guide the team members, and lead learning sessions
- Flexibility to adapt to changes in project requirements, technology, and team composition
- Experience building RESTful Web Services
- Test-driven development, which includes Unit and End-to-End Testing
- Experience with Agile software development (e.g. SCRUM or KANBAN)
- Experience in a CI/CD environment
- Bachelors or Masters in Computer Science, Engineering, Physics, Math, or related work experience
- Experience with, knowledge of, and strong demonstrated interest in, global financial markets and financial products.
Source: the employer's careers page. Last checked 2026-09-30. Posted 2026-09-30.
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