Senior Java Performance & Resiliency Engineer

Spectraforce Technologies, Inc.

Southlake (TX)

Hybrid

USD 110,000 - 160,000

Full time

2 days ago

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Job summary

Spectraforce Technologies, Inc. seeks a Senior Performance Engineer to join the thinkorswim Performance Engineering team, focusing on latency, scalability, reliability, and resiliency for a Java-based trading platform.

You will build workloads, analyze JVM behavior, and recommend code and configuration improvements across client, server, gateway, infrastructure, and cloud environments. This 12-month engagement offers hybrid onsite work in Southlake, TX or Ann Arbor, MI, with potential conversion

Qualifications

Bachelor's degree in computer science or engineering.
5+ years in performance, scalability, software engineering, or production performance analysis.
Strong experience with performance, scalability, failover, recovery, and resiliency testing.
At least 2 years of hands-on Java development experience.
Deep Core Java knowledge, including JVM internals, concurrency, multithreading, memory, garbage collection, and latency.
Ability to read source code and diagnose bottlenecks with dumps, logs, profilers, metrics, and observability tools.

Responsibilities

Independently plan and deliver performance, scalability, resiliency, and capacity validation for assigned systems.
Learn architecture, business flows, dependencies, workloads, and production behavior.
Define requirements, workloads, acceptance criteria, and reports with partner teams.
Build performance test scripts, workload generators, mock services, frameworks, and automation.
Run load, stress, endurance, scalability, failover, recovery, degradation, and resiliency tests.
Analyze source code, JVM behavior, system resources, databases, networks, logs, metrics, and end-to-end latency.
Recommend and validate code, configuration, infrastructure, database, capacity, design, and resiliency improvements.
Use production behavior as the baseline for workload design, capacity planning, risk analysis, and validation.
Maintain dashboards, reports, diagnostic tools, runbooks, frameworks, and workload libraries.
Evaluate new testing, profiling, observability, and resiliency tools.
Communicate results, risks, recommendations, and open issues clearly.