Principal Software Engineer
Company: Fidelity
Location: Boston, MA
Salary: $107k - $216k per year
Type: Full-time
Posted: 2026-10-02
About this role
# Fidelity will not provide immigration sponsorship for this position.
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## 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 u...