Senior Java Engineer

Job Description

Job Description

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.

Recruitment Transparency Notice

 

Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening  and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team ( View email address on us.fitly.work , View phone number on us.fitly.work) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group’s use of these tools, including AI tools, as part of the application and hiring process.

 

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 View email address on us.fitly.work.

 

About Eliassen Group:

 

Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients’ capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.

 

Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.

 

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