Performance Engineer - Senior

job summary:

Client is seeking a Senior Performance Engineer to join the thinkorswim Performance Engineering team. This individual-contributor role independently plans and delivers performance and resiliency initiatives for a Java-based trading platform, with a focus on latency, scalability, reliability, and resiliency.

The engineer builds workloads and tools, finds code and system bottlenecks, and recommends improvements across client, server, gateway, infrastructure, and cloud environments.

This role requires deep Core Java knowledge and strong diagnostic skills. The engineer reads source code, analyzes JVM and system behavior, and evaluates production traffic patterns. The engineer translates those findings into recommendations for code, configuration, capacity, and system design.

location: Southlake, Texas

job type: Contract

salary: $59.50 - 62.50 per hour

work hours: 9am to 5pm

education: Bachelors



responsibilities:

Key Responsibilities

- Responsible for independently planning and delivering 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(CircuitBreakers, Shapers, LoadBalancers & Failover).

- 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.

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

- Communicate results, risks, recommendations, and open issues clearly.

qualifications:

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skills:

JMeter,AI,AI tools,shell,caching,cloud environments,concurrency,databases,distributed systems,Docker,failover,Gatling,Google Cloud,observability tools,Grafana,computer science,IntelliJ,Java-based,Core Java,Java development,Java,JVM,Kubernetes,LLM,knowledge of Linux,latency,memory management,Visual Studio,monitoring tools,multithreading,profilers,Python,Scala,application servers,software engineering,Splunk,reliability,acceptance criteria,automation,design recommendations,diagnostic skills,diagnosing,trading platform,financial systems,garbage collection,infrastructure,statistics,metrics,Performance Engineering,performance analysis,intelligent automation,scalability,system design,testing,trading,traffic patterns

Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.

At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact

Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility).

This posting is open for thirty (30) days.