Senior Java Engineer – HPC Cluster Development & Maintenance, (f/m/d)
Confirmed on the employer's own hiring board on Oct 17, 2026. First seen by Alion on Sep 22, 2026. Julius Baer scores B on the Alion truth index.
At Julius Baer, we celebrate and value the individual qualities you bring, enabling you to be impactful, to be entrepreneurial, to be empowered, and to create value beyond wealth. Let’s shape the future of wealth management together.
We are seeking a strong Java engineer to develop and maintain a High-Performance Computing (HPC) cluster comprising hundreds of servers (on-premises and augmented by Microsoft Azure). This cluster provides critical computing power to a modern trading floor.The cluster scheduling and control systems are primarily built in Java, with Apache Ignite as the clustering layer. Jobs are received from internal clients via legacy HTTP and ActiveMQ interfaces, while modern clients use an in-house API developed in Java and Python. System statistics are collected in MongoDB and Elastic/Kibana.
This role requires ensuring high availability for a mission-critical resource, developing a deep understanding of a large existing codebase, and proposing improvements. You will also maintain and enhance multiple monitoring systems for both infrastructure and client job submissions.
YOUR CHALLENGE
Future-proof and maintain Java-based cluster scheduling and control systems
Ensure high availability and reliability of HPC resources
Maintain and improve monitoring systems for infrastructure and client submissions
Collaborate with internal stakeholders to balance resource allocation with business requirements
Troubleshoot and optimize performance across on-prem and Azure-augmented environments
Ensure compliance with banking regulatory requirements
YOUR PROFILE
Strong Java multithreaded development expertise (core and enterprise-level)
Experience with:
Distributed Execution Engines.
NoSQL Databases
ActiveMQ (messaging)
Front-end Web Technologies (legacy UI maintenance)
Python (for API and tooling)
Familiarity with:
Azure Portal and Azure SDK for Java
Red Hat Linux
Understanding of banking systems and regulatory requirements
Language: Fluent English; German is a plus
Bonus Skills:
Scala and C++
Kubernetes (container orchestration)
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