Senior Software Engineer - Optimizer Hub

Azul

Responsibilities

ensures consistent responsiveness and performance even as instances are brought up and down, and during critical times like a retail rush, start of the gaming day, or market open.
As a Senior Software Engineer on the Optimizer Hub team, you will design and build the server-side services that sit at the heart of our JVM performance platform. You will work closely with product managers, performance engineers, and JVM experts to deliver high-quality, scalable backend components.
Build and evolve server-side OptHub components that communicate with the JVM at scale across cloud and on-premises environments.
Debug complex distributed systems issues with limited diagnostic data and under performance constraints.
Design and implement observability, profiling, and diagnostic tooling to support both internal development and customer-facing deployments.
Drive performance analysis and improvement: create benchmarks, interpret profiler output, and act on findings.
Participate in design discussions and code reviews, raising the bar for the whole team.

5+ years of strong professional Java development experience, with a focus on backend and server-side systems.
Deep understanding of JVM internals: memory management, garbage collection, JIT compilation, and threading.
Experience building and operating distributed systems and microservices in production.
Proficiency with concurrency, low-latency design, and performance optimization techniques in Java.
Experience with cloud platforms (AWS, Azure, or GCP) and container orchestration (Kubernetes).
Ability to design clean APIs and protocols; comfort working close to the metal when needed.
Strong debugging skills — you can track down hard-to-reproduce production issues with limited data.

Familiarity with JVM-adjacent technologies: JVM agents, JVMTI, bytecode manipulation (ASM, Javassist), or OpenJDK internals.
Background in performance engineering, profilers (async-profiler, JFR, YourKit), or runtime observability.
Experience with gRPC, Protocol Buffers,

Design, develop, and maintain high-performance Java services including protocols, APIs, data storage, and real-time optimization engines.