Principal Performance Engineer

The Role

Fidelity Stock Transfer (FST) in Fidelity Labs is looking for a Principal Performance Engineer to join us. As a key member of a growing engineering team, this role will be hands-on building the technology and architecture of world class end-to-end systems. Learn more about FST at  

The Expertise You Have

• Strong Java development experience 
• Hands-on experience building and maintaining services using Spring Boot 
• Solid understanding of RESTful APIs and distributed systems 
• Experience designing and executing performance/load tests 
• Strong debugging and profiling skills 
• Ability to read, write, and improve production-quality code 
• Experience with k6, Gatling, JMeter, or similar performance testing tools 
• Familiarity with Node.js 
• Frontend experience with Angular and/or React 
• Understanding of CI/CD pipelines and test automation 
• Experience testing cloud-native applications (containers, microservices) 
• Knowledge of observability tools (metrics, logging, tracing) 
• Experience working in Agile/Scrum development environments 
• A developer-first mindset with a strong interest in performance engineering 
• Someone who can bridge the gap between functional correctness and non-functional requirements 
• A collaborative engineer who can influence design decisions based on performance insights 
• Comfort stepping into existing codebases and improving them 
• You build positive relationships with other team members and have excellent verbal and written communication. 

The Team

We are Fidelity Labs, Fidelity Investments’ in-house fintech incubator with a mission to build new businesses to drive growth for Fidelity. We seek to shape the future of our industry by building new products and services to improve the lives of the diverse set of customers, businesses and financial institutions we serve. 

Fidelity Labs is a dynamic workplace that combines the best parts of startup life—building from scratch, adapting quickly, and moon-shot ambition—with the scale and stability of an industry leader. We provide a safe space for startup teams to explore new business ideas, quickly test them with customers, and scale the most promising concepts within an existing business unit, or as a new venture. 

This opportunity is brought to you by Fidelity Labs. Learn more at .

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Fidelity’s Onsite Working Model
Fidelity is transitioning to a full-time onsite working model through a phased rollout across regions and roles. Currently, some roles and locations require 100% onsite presence, while others require less. Onsite expectations are likely to evolve as the rollout continues. This transition does not apply to fully remote roles.