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Principal Software Engineer (REST API, Java, Springboot, SQL, AWS)

Fidelity

Fidelity

Software Engineering
Boston, MA, USA
USD 107k-216k / year
Posted on Mar 25, 2026

Job Description:

Principal Software Engineer - API focus

Fidelity Digital Assets®, a Fidelity Investments Company, is developing a full-service enterprise-grade platform for storing, trading and servicing digital assets, such as Bitcoin and Ethereum.

As a Principal Software Engineer, you will be an integral part of the Settlement Services team. You’ll get the opportunity to develop your skills, collaborate across Fidelity teams and continue to learn in a fun, collaborative, iterative, and rapidly changing environment.

This is a hands-on role where you will write code for product features. You will work closely with the squad and architect to build secure, scalable, resilient cloud-based microservices utilizing modern software development practices. You will help design and implement REST API clients and services, exchange asynchronous messages between services, and use Postgres to manage data. You will also write automated unit and integration tests, package software using containers, coordinate builds using continuous integration pipelines and prepare your services for deployment on AWS.

The Team

The Institutional API Team is responsible for the backend services and APIs that support transfer of digital assets and wires. Additionally, they create and maintain services to get account positions, transaction activity and other account management related use cases.

The Expertise You Have

  • Expert in core Java technologies and frameworks like Spring Boot

  • Proficient in databases and SQL

  • Understanding of AWS or other cloud platforms and containerization technologies such as ECS and Docker

  • Experience working with version control systems like GIT.

  • Experience with asynchronous workers and resilient messaging services such as SNS and SQS

  • An understanding of microservice architectures and twelve factor app patterns

  • Ability to build reliable software that can withstand unreliable environments

  • Unit and integration test automation using Junit and spring boot test framework

  • Experience building and deploying applications using continuous integration pipelines and automated deployment tools such as Jenkins.

The Skills You Bring

  • A solid and strong foundation in software engineering – bachelor’s degree preferred or equivalent industry experience (8+ years’ experience)

  • Possess critical thinking skills to build end-to-end solutions

  • Experience with API design using Swagger Hub to Build, Collaborate & Integrate APIs

  • Able to clearly articulate API strategies to all partners

  • Passionate and committed to learning new things and developing with the latest technologies and frameworks

  • Work well in both a small agile team and independently, having a strong user focus

  • Strong analytical, communication, and organizational skills and the ability to handle multiple tasks at a given time

  • Participate in engineering practices such as code and design reviews, environment strategy, and build and deployment pipeline.

The Value You Deliver

  • Work with product management on requirements, decompose epics into stories, and deliver solutions that meet or exceed customer expectations

  • Build scalable, resilient, cloud-based systems aligned with our long-term strategy

  • Provide outstanding support, including on-call support when necessary

  • Mentor junior software engineers

Why Fidelity Digital Assets®?

Fidelity Digital Assets® embraces an entrepreneurial culture and startup mindset while serving as one of the most innovative business units within Fidelity Investments. Our global, diverse team of 130+ forward-thinking professionals lead with agility and creativity to build solutions that bridge the gap between traditional institutional investors and their exposure to digital assets. The firm’s tenure and experience across multiple business lines present our employees with unprecedented access to knowledge, technology, and resources that help our team reshape the future of finance.

The base salary range for this position is $107,000-216,000 USD per year.

Placement in the range will vary based on job responsibilities and scope, geographic location, candidate’s relevant experience, and other factors.

Base salary is only part of the total compensation package. Depending on the position and eligibility requirements, the offer package may also include bonus or other variable compensation.

We offer a wide range of benefits to meet your evolving needs and help you live your best life at work and at home. These benefits include comprehensive health care coverage and emotional well-being support, market-leading retirement, generous paid time off and parental leave, charitable giving employee match program, and educational assistance including student loan repayment, tuition reimbursement, and learning resources to develop your career. Note, the application window closes when the position is filled or unposted.

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.

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. Please consult with your recruiter for the specific expectations for this position.

Certifications:

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Information Technology

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Benefits that balance life and work

From our fully paid parent leave to our on-site health and wellness centers, our benefits support the belief that more balance you have, the better you can achieve your goals.

Benefits

Company overview

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 experience.

Reasonable accommodations

Fidelity will reasonably accommodate applicants with disabilities who need adjustments to participate in the application or interview process. To initiate a request for an accommodation contact the HR Accommodation Team by sending an email to accommodations@fmr.com, or by calling 800-835-5099, prompt 2, option 3.

Equal opportunity employer

Fidelity Investments is an equal opportunity employer. We believe that the most effective way to attract, develop, and retain a diverse workforce is to build an enduring culture of inclusion and belonging.

Hybrid work schedule

Fidelity’s hybrid working model blends the best of both onsite and offsite work experiences. Working onsite is important for our business strategy and our culture. We also value the benefits that working offsite offers associates. Most hybrid roles require associates to work onsite all business days of every other week in a Fidelity office.

Applicant screening

At Fidelity, we value honesty, integrity, and the safety of our associates and customers within a heavily regulated industry. Certain roles may require candidates to go through a preliminary credit check during the screening process. Candidates who are presented with a Fidelity offer will need to go through a background investigation and may be asked to provide additional documentation as requested. This investigation includes but is not limited to a criminal, civil litigations and regulatory review, employment, education, and credit review (role dependent). These investigations will account for 7 years or more of history, depending on the role. Where permitted by federal or state law, Fidelity will also conduct a pre-employment drug screen, which will review for the following substances: Amphetamines, THC (marijuana), cocaine, opiates, phencyclidine.

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