Performance Engineer

Our client is seeking a Performance Engineer to join the thinkorswim® Performance Engineering team. As a Performance Engineer, you will be an individual contributor who independently plans and delivers performance and resiliency initiatives for a Java-based trading platform, with a focus on latency, scalability, reliability, and resiliency. If you enjoy turning production signals into actionable engineering improvements, this role is built for you.

Job Title: Performance Engineer

Location: Southlake, TX (Ann Arbor, MI is a backup option)

Pay Range: $65-$68/hr

• Independently plan and deliver performance, scalability, resiliency, and capacity validation for assigned systems.

• Learn architecture, business flows, dependencies, workloads, and production behavior to establish a strong baseline for testing and recommendations.

• Define requirements, workloads, acceptance criteria, and reporting with partner teams to ensure measurable outcomes.

• Build performance test scripts, workload generators, mock services, frameworks, and automation; execute 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 improvements across code, configuration, capacity, design, and resiliency patterns (e.g., Circuit Breakers, Shapers, Load Balancers & Failover).

• Bachelor’s degree in computer science or engineering.

• 5+ years of experience 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, with deep Core Java knowledge (JVM internals, concurrency, multithreading, memory, garbage collection, and latency).

• Ability to read source code and diagnose bottlenecks using dumps, logs, profilers, metrics, and observability tools; experience building workload generators/utilities/automation with Java, Scala, Python, shell, JMeter, Gatling, or similar tools.

• Work onsite in an office environment 4 days per week, supporting a mission‑critical performance engineering function.

• Own end‑to‑end performance validation—from workload design and acceptance criteria to evidence‑based recommendations.

• Build and maintain dashboards, reports, diagnostic tools, runbooks, frameworks, and workload libraries to strengthen operational readiness.

• Collaborate with partner teams to communicate results, risks, recommendations, and open issues clearly.

• Use approved automation and AI tools to improve scripting, analysis, documentation, and diagnostics.

• Medical and Prescription Drug Plans

• Dental Plan

• Vision Plan

• Health Savings Account

• Health Flexible Spending Account

• Dependent Care Flexible Spending Account

• Supplemental Life Insurance

• Short Term and Long Term Disability Insurance

• Business Travel Insurance

• 401(k), Plus Match

• Weekly Pay

Manpower Group® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast‑changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We develop innovative solutions for hundreds of thousands of organizations every year, providing them with skilled talent while finding meaningful, sustainable employment for millions of people across a wide range of industries and skills.

Our expert family of brands –
Manpower, Experis, Talent Solutions, and Jefferson Wells – creates substantial value for candidates…