Senior Performance Engineer
Jersey City, NJ
Category: Development
Industry: Financial Services
Reference ID: JN -062026-107356
Date Posted: 06/09/2026
Shortcut: http://careers.eliassen.com/BGW4qo
Description:
On-site in Jersey City, NJ
Our client seeks a Senior Performance Engineer to define strategy, establish performance excellence, and create systems that make performance a default outcome for software delivery within digital asset platforms. The role includes hands-on performance test design and execution, custom Java-based harness development, benchmarking frameworks, and validation of production readiness across distributed, cloud-based systems.
Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $68.00 to $73.00/hr. w2
Responsibilities:
- Design, develop, and execute performance tests across load, stress, duration, endurance, spike, soak, volume, and capacity scenarios.
- Build custom Java-based performance test harnesses to simulate trading workflows, market data ingestion, order routing, and exchange connectivity.
- Develop micro and macro benchmarking frameworks and production-like simulators to capture latency and throughput.
- Create and run execution scenarios for varied tests and analyze outcomes to sign off production readiness for stability and performance.
- Connect performance outcomes to business objectives and SLOs, guiding teams to keep the stack scalable and efficient.
- Lead performance profiling and instrumentation architecture for CPU, memory, hot paths, utilization, and deployment events.
- Partner with DevOps and back-end engineering to ensure optimal service utilization in containerized, cloud environments.
- Debug across distributed and low-level system boundaries using logs, metrics, tracing, and performance tooling.
- Ramp up on new technologies and unfamiliar parts of the stack as needed.
Experience Requirements:
- 6+ years of performance engineering with hands-on test development.
- Strong Java and core JVM expertise, including JVM tuning, thread and heap dump analysis.
- Distributed systems experience with asynchronous workers and microservice architecture in cloud deployments.
- Familiarity with AWS, Azure, or GCP.
- Proficiency with profiling and instrumentation tools such as Dynatrace, Datadog, or AppDynamics.
- Ability to identify memory leaks, connection issues, and throughput bottlenecks across web applications, infrastructure, and cloud.
- Experience architecting large-scale test automation.
- Track record leading performance initiatives and influencing senior engineering and product leaders.
- Effective communication, collaboration, and mentoring skills with a focus on productivity.
- Nice to have: capital markets or crypto experience, including trading, algo trading, and market data.
- Nice to have: kernel bypass experience such as Solarflare OpenOnload.
- Nice to have: low-latency messaging products such as Aeron, Solace, or 29West.
Education Requirements:
Bachelor’s degree in computer science or related field required.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contact fraud@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above