Senior Java Engineer
Jersey City, NJ
Category: Development
Industry: Financial Services
Reference ID: JN -052026-107116
Date Posted: 05/25/2026
Shortcut: http://careers.eliassen.com/Nou7k0
Description:
On-site in Jersey City, NJ
Our client seeks a highly experienced software engineer to lead the design and development of next-generation trading systems. This hands-on technical leadership role focuses on building scalable, resilient, and high-performance trading infrastructure. You will collaborate across teams, mentor engineers, and drive innovation in a mission-critical environment.
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: $80.00 to $90.00/hr. w2
Responsibilities:
- Architect and develop distributed, event-driven trading systems optimized for low latency and high throughput.
- Design and implement asynchronous processing frameworks and resilient messaging services.
- Collaborate with internal and external teams to deliver robust, end-to-end trading workflows.
- Lead performance tuning and optimization efforts across the platform.
- Mentor junior engineers and promote engineering best practices.
- Support production and non-production environments, including participation in a weekly on-call rotation.
Experience Requirements:
- 10+ years of hands-on software design and development experience.
- Expertise in Java, Python, and Linux.
- Deep experience with low latency messaging systems such as 29West or Kafka.
- Proficiency in KDB+ or other time-series databases.
- Background in building scalable, distributed, asynchronous, and event-driven applications.
- Advanced knowledge of low latency design patterns and performance optimization techniques.
- Experience with Capital Markets or Brokerage systems, especially order management.
- Understanding of the FIX protocol and FIX engines.
- Experience with AI developer assist tools such as GitHub Copilot.
- Experience with CI/CD tools including GitHub, Maven, Jenkins, Artifactory, and uDeploy.
- Hands-on experience deploying applications to AWS or other cloud platforms.
- Strong analytical, communication, and organizational skills.
- Ability to manage multiple tasks and work in a collaborative team environment.
- Willingness to support production systems and participate in on-call rotations, including occasional weekend support.
Education Requirements:
- Bachelor’s degree in Computer Science, Engineering, Information Technology, or equivalent.
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