Principal, Full Stack Engineer- Java, Spring Boot, React/Angular, AWS

Fidelity Investments • Merrimack, NH

3d • Hybrid

About The Position

Principal Full Stack Developer – FFIO Market Data Note: Fidelity is not providing immigration sponsorship for this position The Role We’re seeking a highly skilled Principal Full Stack Developer with deep expertise in Java and Spring Boot to help build modern, scalable, and cloud‑enabled market data applications. Many of the systems you’ll develop may be internet‑facing or externally accessible, requiring a strong focus on secure design, data protection, and resilient architecture from the outset. In this role, you will design, develop, test, and deploy services that support Fidelity’s mission‑critical market data ecosystem. You’ll work with technologies such as Java, Spring Boot, REST APIs, Angular/React, Apache Camel (nice to have), AWS, and distributed databases. Collaboration across engineering, architecture, and product teams will be essential as you deliver high‑quality solutions that help millions of Fidelity customers make informed financial decisions. This opportunity offers hands‑on experience with core Fidelity financial systems and the chance to build applications that power some of our most high‑value data pipelines. The Team The FFIO Market Data Engineering team delivers and supports innovative, high‑performance market data service solutions for internal business partners and external customers. Our engineers thrive in an environment of curiosity, experimentation, and continuous improvement—always driving toward a differentiated market data experience for Fidelity associates and clients.

Requirements

• 8+ years developing enterprise applications with Java
• 8+ years building microservices using Spring Boot
• Strong full‑stack experience with modern front‑end frameworks (React, Angular, or similar)
• Proficiency in REST API design and implementation
• Knowledge of secure coding practices and OWASP considerations
• Experience with API authentication/authorization (OAuth2, OIDC, JWT)
• Ability to protect data in transit and at rest
• Understanding of threat exposure, rate limiting, and input validation
• Hands‑on experience with AWS services (EC2, EKS, S3, Lambda)
• Experience with databases such as Oracle, Cassandra, PostgreSQL, or YugabyteDB
• Familiarity with CI/CD and containerization tools (Jenkins, GitLab, Docker, Kubernetes)
• Strong automated testing skills (unit, integration, performance)
• Delivery‑focused mindset with strong collaboration and commitment to engineering excellence
• Strong troubleshooting abilities across application, system, and network layers
• Bachelor’s or Master’s in Computer Science or related field

Nice To Haves

• Development experience with Apache Camel (nice to have)

Responsibilities

• design, develop, test, and deploy services that support Fidelity’s mission‑critical market data ecosystem
• Collaboration across engineering, architecture, and product teams will be essential as you deliver high‑quality solutions that help millions of Fidelity customers make informed financial decisions.

What This Job Offers

• Job Type: Full-time
• Career Level: Principal