Search
Principal Software Engineer (Java API Development)

Principal Software Engineer (Java API Development)

locationMerrimack, NH, USA
PublishedPublished: 4/25/2026
IT / Computer Engineering
Full Time

Job Description:

Fidelity is hiring a Principal Software Engineer - Java API Development Platform at Fidelity Investments.

Fidelity Workplace Investing – API Market Technology Center of Excellence to build and support outstanding products for its highly business critical API Gateway. Our engineering team is innovative, diverse, passionate and self-driven. We work in a very dynamic agile environment.

The Purpose

Lead Workplace Investing in crafting a modern, digital API ecosystem delivering better customer experiences faster, enabling expansion to new markets and providing access to legacy and third-party systems. As a lead engineer on the team, your primary role will be building, testing, and engineering REST APIs on our API marketplace platform which is hosted on Open source api gateway. You are encouraged to quickly gain an understanding of all the components of our platform to be able to lead and chip into strategic roadmaps and initiatives related to the improvement, maintenance, and support of the platform.

The Team
Fidelity's Workplace Investing (WI) Technology team designs, develops, implements and supports WI's suite of Internet products and services. Drive WI API Strategy forward working with enterprise teams and product partners with a dedicated commitment to innovation.

Required Expertise

  • Bachelor’s degree in computer science or engineering

  • 8 years of development experience (currently hands on) in Java, Spring MVC / Spring boot / Web Services (REST) and configuring web containers.

  • Ability to make significant contributions to our technology platform

  • Working Knowledge of API management software such as Api Gateway

  • IDE’s Spring Tool Suite, and Eclipse, within a UNIX and Windows environment.

  • Application build, deploy using Continuous Integration/ Deployment (CI/CD) tools -- Jenkins, Maven, uDeploy, etc.

  • Leadership: Team player, self-starter, collaborative, innovative, eager to learn every day. Agile/Scrum methodology

  • Understanding and hands on knowledge of docker, cloud-computing / cloud services platforms (e.g., AWS or azure) and API Gateway

· Able to clearly articulate API strategies to all partners

Responsibilities:

  • Assist in coordinating multiple development work streams through integration and ensure architecture is scalable and extensible.

  • Define, maintain, and support Java development environment and best practices, such as Maven, Sonar, and other Open-Source tools.

  • Assist in identification, isolation, resolution, and communication of problems within the production and nonproduction environment and perform troubleshooting.

  • Deliver API Platform capabilities using open-source Envoy, Microgateway, JWT, Key Management, External Identity Mapping, Datadog, Security and many more.

  • API design using SwaggerHub to Build, Collaborate and Integrate APIs

  • Create API common framework.

  • Migration of existing APIs to Kubernetes/Azure

  • Perform code reviews, unit testing, and integration testing using Open-Source frameworks.

  • Provide mentorship to junior team members.

  • Contribute to continuous process improvement initiatives.

  • Driving new API products are available in the marketplace.

  • Consumer adoption of new API products

  • Decommissioning legacy assets in line with enterprise goals and objectives

  • Responsible for WI infrastructure needs as it relates to the API Platform offering from Enterprise Cloud computing

The Value You Deliver

  • Understand the leadership vision and execute on that vision.

  • Help strengthen further the culture of innovation by setting examples

  • Find creative ways to get things done, and do them right

  • Develop a culture of outstanding software engineering practices

  • Exercise a passion for keeping your knowledge up to date with the latest and greatest.

  • Help maintain the high level of integrity in the team

  • Take ownership and accountability for determining what needs to be done

  • Establishing an API marketplace for Fidelity and trusted external partners

  • Providing unified experience to access technical assets and resources

  • Implement consistent standards for API development, deployment

  • Coordinate publishing and consumption in the API Marketplace

  • Mandate versioning and adoption policies

How Your Work Impacts the Organization

Our ever-evolving technology stack ensures a phenomenal learning culture in the team. We are always exploring new technologies and new ways to continually provide value to our customers. This team has a direct and positive impact on Fidelity’s customers.

Certifications:

Category:

Information Technology

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.