Principal Full Stack Engineer

Fidelity
Fidelity

Software Engineering

Durham, NC, USA

Posted on Jul 29, 2026

Job Description:

Note: Fidelity will not provide immigration sponsorship for this position.

Position Description:

Performs cloud-native application design and development in an Agile software delivery environment. Automates the integration of code changes from multiple contributors into a single software project through the use of Continuous Integration and Continuous Development (CI/CD) practices and open-source platforms. Uses component-based frameworks (Angular and J2EE) to build scalable web applications via HTML, CSS/SCSS, and JavaScript. Buids and maintains enterprise cloud enabled distributed systems. Participates in design reviews and code reviews. Enhances software engineering practices in the areas of Acceptance Test-Driven Development (ATDD). Uses business knowledge to translate the vision for divisional initiatives into business solutions by developing complex or multiple software applications and conducting studies of alternatives. Analyzes and recommends changes in project development policies, procedures, standards, and strategies to development experts and management.

Primary Responsibilities:

  • Writes clean, testable, readable, and easily maintainable code.
  • Converts legacy monolithic architecture to a microservices-based architecture.
  • Defines and implements application-level architecture.
  • Develops applications on complex projects, components, and subsystems for the division.
  • Responsible for QA readiness of software deliverables.
  • Develops comprehensive documentation for multiple applications or subsystems.
  • Establishes full project life cycle plans for complex projects across multiple platforms.
  • Advises on risk assessment and risk management strategies for projects.
  • Plans and coordinates project schedules and assignments for multiple projects.
  • Acts as a primary liaison for business units to resolve various project/technology issues.
  • Provides technology solutions to daily issues and technical evaluation estimates on technology initiatives.
  • Mentors junior team members.
  • Performs independent and complex technical and functional analysis for multiple projects supporting several divisional initiatives.
  • Develops original and creative technical solutions to on-going development efforts.

Education and Experience:

Bachelor’s degree in Computer Science, Engineering, Information Technology, Information Systems, or a closely related field (or foreign education equivalent) and five (5) years of experience as a Principal Full Stack Engineer (or closely related occupation) developing portfolio construction solutions leveraging Java, Kafka, AWS, and advanced portfolio optimization technologies within a financial services environment.

Or, alternatively, Master’s degree in Computer Science, Engineering, Information Technology, Information Systems, or a closely related field (or foreign education equivalent) and three (3) years of experience as a Principal Full Stack Engineer (or closely related occupation) developing portfolio construction solutions leveraging Java, Kafka, AWS, and advanced portfolio optimization technologies within a financial services environment.

Skills and Knowledge:

Candidate must also possess:

  • Demonstrated Expertise (“DE”) developing high-throughput, fault-tolerant, and highly concurrent batch processes, and scalable middle-tier web services for portfolio construction and management; administering message-based middleware, working with stateful applications, analyzing complex financial data across relational databases, and coordinating batch scheduling and vendor-driven portfolio optimizations; and implementing domain specific business rules using Java, Spring Boot, Groovy, Python, JMS, Kafka, JPA, myBatis, Oracle, PL/SQL, Autosys, and Axioma.
  • DE analyzing requirements and large interconnected data models to build full stack portfolio construction and management applications in accordance with Agile methodologies and Atlassian tools (JIRA); and identifying automation ready requirements using Behavior-Driven Development (BDD) and Acceptance Test Driven Design (ATDD) techniques with Spock, JUnit, Cypress, PACT, and WireMock.
  • DE participating in and providing coaching throughout the full Software Development Lifecycle (SDLC) -- migrating and optimizing Continuous Integration/Continuous Delivery (CI/CD) pipelines, supporting storage, and performing source code and structures management using Jenkins, MCADS, and AWS hybrid Cloud frameworks (S3, DynamoDB, EKS and Lambda) as well as Git and Maven.
  • DE monitoring, profiling, and troubleshooting performance issues in portfolio construction and management applications using Datadog, JProfiler, Java VisualVM, and JConsole; developing baseline behavioral profiles for alerting and monitoring; planning operational and performance optimizations using jMagic; and performing performance assessments and enabling dynamic instance scaling using AWS EC2, EKS, and ECS as well as Docker, aligned with DevOps methodologies.

#PE1M2

#LI-DNI

Fidelity’s Onsite Working Model
Fidelity is transitioning to a full-time onsite working model through a phased rollout across regions and roles. Currently, some roles and locations require 100% onsite presence, while others require less. Onsite expectations are likely to evolve as the rollout continues. This transition does not apply to fully remote roles.

Certifications:

Category:

Information Technology

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.

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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.

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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