Principal Performance Engineer: Scale & Optimize Apps

Soteria Reinsurance Ltd.; Durham, Northern (NC, KY); Hybrid; USD 140,000 - 170,000; Full time

Job summary

Fidelity Labs is seeking a Principal Performance Engineer in Durham, NC. You will be hands-on building the architecture of world-class end-to-end systems and leading performance initiatives across services.

The role demands strong Java and Spring Boot skills, expertise in RESTful APIs, performance testing, and observability. You will influence design decisions and collaborate with agile teams to deliver scalable, cloud-native applications.

Qualifications

• Strong Java development experience.
• Hands-on with Spring Boot services.
• Experience building RESTful APIs and distributed systems.
• Design and execute performance/load tests.
• Familiarity with performance tooling (k6, Gatling, JMeter).
• Experience with Node.js and frontend frameworks (Angular/React).
• Understanding of CI/CD pipelines and test automation.
• Knowledge of observability tools and cloud-native apps.

Responsibilities

• Build and maintain end-to-end systems and services.
• Design and run performance and load tests.
• Debug, profile, and optimize production code.
• Collaborate with cross-functional teams to improve design.
• Bridge functional correctness and non-functional requirements.

Skills

Java

Spring Boot

REST APIs

Distributed Systems

Performance Testing

Node.js

Frontend Frameworks

CI/CD

Containers/Microservices

Observability

Agile/Scrum

Debugging/Profiling

Tools

k6

Gatling

JMeter

Job description

Fidelity Labs is seeking a Principal Performance Engineer in Durham, NC. You will be hands-on building the architecture of world-class end-to-end systems and leading performance initiatives across services.

The role demands strong Java and Spring Boot skills, expertise in RESTful APIs, performance testing, and observability. You will influence design decisions and collaborate with agile teams to deliver scalable, cloud-native applications.