Sr. Full Stack Engineer

Fidelity TalentSource is your destination for discovering your next temporary role at Fidelity Investments. We are currently sourcing for a Sr. Full Stack Engineer to work in Jersey City, NJ or Westlake, TX!

The Role

We are seeking a highly experienced software engineer to own the design and development of next-generation trading systems. This is a hands-on technical leadership role focused on building scalable, resilient, and high-performance trading infrastructure. You’ll collaborate across teams, mentor engineers, and drive innovation in a mission-critical environment.

• 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.

The Expertise You Have

• Bachelor’s degree in Computer Science, Engineering, Information Technology, or equivalent.
• 10+ years of hands-on software design and development experience.
• Expertise in Java, C/C++, Python, and Linux.
• Deep experience with low latency messaging systems (e.g., 29West, Kafka).
• Proficiency in KDB+ or other time-series databases.
• Strong 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.
• Solid understanding of the FIX protocol and FIX engines.
• Familiarity with AI developer assist tools (e.g. GitHub Copilot).
• Experience with CI/CD tools such as GitHub, Maven, Jenkins, Artifactory, and uDeploy.
• Hands-on experience deploying applications to AWS or other cloud platforms.

The Skills You Bring

• Ability to understand complex, end-to-end systems and identify performance, scalability, or resilience bottlenecks.
• Strong analytical, communication, and organizational skills.
• Ability to manage multiple tasks and thrive in a collaborative team environment.
• Self-driven innovation and comfort working with leadership.
• Willingness to support production systems and participate in on-call rotations, including occasional weekend support.

The Team

Fidelity Wealth’s Trade Management Engineering group is responsible for building world-class electronic trading solutions for Fidelity’s Capital Markets division. We are a high-performing, fast-paced technology team working with cutting-edge tools to deliver low-latency, high-throughput trading platforms. Our work spans across internal and external teams to build seamless, end-to-end electronic trading workflows.

Please see the below pay rate range for the work location of New Jersey only: $70.00-$110.00 per hour.
Placement in the range will vary based on job responsibilities and scope, geographic location, candidate’s relevant experience, and other factors.

Most roles at Fidelity are Hybrid, requiring associates to work onsite every other week (all business days, M-F) in a Fidelity office. This does not apply to Remote or fully Onsite roles. Some roles may have unique onsite requirements. Please consult with your recruiter for the specific expectations for this position.
Please be advised that Fidelity’s business is governed by the provisions of the Securities Exchange Act of 1934, the Investment Advisers Act of 1940, the Investment Company Act of 1940, ERISA, numerous state laws governing securities, investment and retirement-related financial activities and the rules and regulations of numerous self-regulatory organizations, including FINRA, among others. Those laws and regulations may restrict Fidelity from hiring and/or associating with individuals with certain Criminal Histories.

Company Overview

At Fidelity, we are passionate about making our financial expertise broadly accessible and effective in helping people live the lives they want! We are a privately held company that places a high degree of value in creating and nurturing a work environment that attracts the best talent and reflects our commitment to our associates. We are proud of our diverse and inclusive workplace where we respect and value our associates for their unique perspectives and experiences. For information about working at Fidelity, visit FidelityCareers.com. Fidelity Investments is an equal opportunity employer. Fidelity will reasonably accommodate applicants with disabilities who need adjustments to complete the application or interview process.

Fidelity TalentSource, is the in-house temporary staffing provider for Fidelity Investments. Unlike traditional staffing agencies, we are an internal business unit within Fidelity’s Talent Acquisition team, dedicated to recruiting talent from various backgrounds for roles in Fidelity’s regional and investor center locations. Our mission is to help you experience Fidelity’s diverse and inclusive workplace while expanding your skill set and professional network, with the ultimate goal of conversion to full-time employment as part of Fidelity’s long-term strategy.

For information about working at Fidelity TalentSource, visit FTSJobs.com.

Fidelity TalentSource will reasonably accommodate applicants with disabilities who need adjustments in order to complete the application or interview process. Please email us at HR@ftsjobs.com if you would like to request an accommodation.