Senior Java Engineer – HPC Cluster Development & Maintenance

About the role

At Julius Baer we celebrate and value the individual qualities you bring, enabling you to be impactful, entrepreneurial, and empowered. 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.

Key responsibilities

• 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 job submissions.
• Collaborate with internal stakeholders to balance resource allocation with business requirements.
• Troubleshoot and optimise performance across on‑prem and Azure‑augmented environments.
• Ensure compliance with banking regulatory requirements.

Required profile

• Strong Java multithreaded development expertise (core and enterprise‑level).
• Experience with distributed execution engines, NoSQL databases, ActiveMQ messaging, and legacy front‑end web technologies.
• Proficiency in Python for API development and tooling.
• Familiarity with Azure Portal and Azure SDK for Java, as well as Red Hat Linux.
• Understanding of banking systems and regulatory requirements.
• Fluent English; German is a plus.

Required skills

• Java (multithreaded, core, enterprise)
• Apache Ignite (clustering layer)
• Distributed execution engines
• NoSQL databases (MongoDB)
• ActiveMQ
• Front‑end web technologies (legacy UI)
• Python
• Azure SDK for Java
• Red Hat Linux
• Elastic/Kibana
• Kubernetes (bonus)
• Scala (bonus)
• C++ (bonus)