Senior Performance Engineer

Apex Systems; Southlake (TX); Hybrid; USD 69,000 - 90,000; Full time

Benefits offered by this job

Health benefits

401K

ESPP

Job summary

Everforth Apex Systems is seeking a Senior Performance Engineer to join the team in Southlake, TX. The role focuses on planning and delivering performance and resiliency initiatives for a Java-based trading platform, with emphasis on latency, scalability, and reliability across environments.

You will build workloads, analyze bottlenecks, and partner with teams to implement improvements while maintaining dashboards and automation tools. Strong Core Java, JVM, and testing experience are required.

Qualifications

• Bachelor's degree in computer science or engineering.
• Minimum 5 years in performance, scalability, software engineering, or production performance analysis.
• At least 2 years of hands-on Java development experience.
• Experience with performance, scalability, failover, recovery, and resiliency testing.
• Deep Core Java knowledge including JVM internals, concurrency, memory, GC, and latency.

Responsibilities

• Plan and deliver performance, scalability, resiliency, and capacity validation for assigned systems.
• Learn architecture, business flows, dependencies, workloads, and production behavior.
• Define requirements, workloads, and acceptance criteria with partner teams.
• Build performance test scripts, workload generators, mock services, and automation.
• Run load, stress, endurance, and recovery tests; analyze JVM, logs, and metrics.
• Recommend improvements to code, config, infra, and design; maintain dashboards and tools.

Skills

Core Java

Java performance

Multithreading

JVM tuning

Performance testing

Load testing

Observability

Linux

Education

Bachelor's degree in Computer Science or Engineering

Tools

JMeter

Gatling

Splunk

Grafana

Docker

Kubernetes

Job description

# Senior Performance EngineerApply**Job#: 3055032****Job Description:**Senior Performance Engineer**Location:** Southlake, Texas**Onsite Requirements:** 4 days onsite/1 day remote weekly**Contract duration:** 6+ month contract to hire - conversion contingent on performance**\\*\\*All applicants must be able to work on Apex's W2 without sponsorship needed now or in the future.**Role OverviewAn opportunity is available for a Senior Performance Engineer to join a performance engineering team. This role involves independently planning and delivering performance and resiliency initiatives for a Java-based trading platform, with a focus on latency, scalability, reliability, and resiliency. The engineer will build workloads and tools, identify code and system bottlenecks, and recommend improvements across various environments.Key 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 improvements for code, configuration, infrastructure, databases, capacity, design, and resiliency.* 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.Required Qualifications**Education:** A bachelor’s degree in computer science or engineering is required.**Experience:** A minimum of 5 years in performance, scalability, software engineering, or production performance analysis is required, including at least 2 years of hands-on Java development experience. Experience with performance, scalability, failover, recovery, and resiliency testing is necessary.**Technical Skills:** Deep Core Java knowledge is required, including JVM internals, concurrency, multithreading, memory, garbage collection, and latency. The ability to read source code and diagnose bottlenecks using dumps, logs, profilers, and observability tools is necessary. Experience building workload generators or automation with Java, Scala, Python, shell, JMeter, or Gatling is needed. Knowledge of Linux, databases, application servers, caching, connection pools, distributed systems, and networks is also required. Experience with Splunk, Grafana, and troubleshooting JVM issues is expected.Preferred Qualifications* Experience with real-time financial or trading systems.* Knowledge of Google Cloud, Kubernetes, or Docker.* Experience with AI-assisted analysis, LLM tools, or intelligent automation.* Familiarity with AI tools within Visual Studio or IntelliJ IDEA. *Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.**Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy**Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Everforth Apex team member can provide.**Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.**If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [e-mail] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.**UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.***Employee Type:** Contract**Location:** Southlake, TX, US**Job Type:****Date Posted:** October 14, 2026**Pay Range:** $50 - $65 per hour