Java Engineer – HPC Cluster Development & Maintenance, 100% (f/m/d)

Description

The company runs a hybrid high-performance computing platform with hundreds of on-premises servers and cloud resources in Microsoft Azure, supporting a trading floor.

The role is a 100% position for a Java engineer who will help maintain, optimise and scale this environment as it grows.

Responsibilities

• Keep the Java-based cluster scheduling and control systems up to date and maintainable.
• Ensure the HPC resources stay highly available and reliable, as they are mission-critical.
• Maintain and improve the monitoring systems covering infrastructure and client job submissions.
• Work with internal stakeholders to balance resource allocation against business needs.
• Troubleshoot and tune performance across on-premises and Azure-supported environments.
• Ensure the platform meets banking regulatory requirements.
• Build a deep understanding of a large existing codebase and propose improvements to it.
• Handle frequent shifts in priority and context switching in a fast-moving setting.

Requirements

• Strong Java skills, covering both core and enterprise-level development.
• Experience with distributed systems and distributed execution engines.
• Experience with NoSQL databases, ActiveMQ messaging, legacy front-end web technologies and Python for APIs and tooling.
• Familiarity with the Azure Portal, the Azure SDK for Java and Red Hat Linux.
• Understanding of banking systems and the regulations that apply to them.
• Fluent English. German is a plus.
• Good code review habits and a strong focus on code quality.
• Able to drive technical changes through to completion, following processes in a structured way.
• Comfortable working collaboratively in an agile team, with a positive, can-do attitude.
• Able to work with minimal direction and to communicate clearly.
• Optional: experience with Scala, C++, Kubernetes or multithreaded Java development, which is a bonus skill.

Conditions

The position is 100%, in a hybrid environment with a link to the trading floor infrastructure.

Apply through the company's online application tool; the company also offers a candidate account for job alerts.