Principal Software Engineer/Developer

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:

Delivers business solutions through the development of advanced software applications and provides technical guidance to engineering teams. Collaborates with architecture design teams to define and implement application-level architecture for complex, end-to-end systems. Serves as a liaison between business units and technical teams to resolve complex project and technology challenges. 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:

  • Participates in architecture design teams.

  • Defines and implements application-level architecture.

  • Develops applications on complex projects, components, and subsystems for the division.

  • Recommends development testing tools and methodologies and reviews and validates test plans.

  • 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.

  • Responsible for meeting project goals on-time and on-budget.

  • Advises on risk assessment and risk management strategies for projects.

  • Plans and coordinates complex 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.

  • Advises senior management on technical strategy.

  • 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 Software Engineer/Developer (or closely related occupation) building scalable web applications using Angular for front-end, Node.js for back-end, and MongoDB for database management.

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 Software Engineer/Developer (or closely related occupation) building scalable web applications using Angular for front-end, Node.js for back-end, and MongoDB for database management.

Skills and Knowledge:

Candidate must also possess:

  • Demonstrated Expertise (“DE”) designing and developing scalable microservices using Node.js and non-relational databases (MongoDB); implementing Cloud-native solutions on Amazon Web Services (AWS); leveraging Kafka for distributed messaging, Protobuf for efficient data serialization, and ElasticSearch for high-performance data retrieval; and applying Open Policy Agent (OPA) for fine-grained access control and authorization.

  • DE implementing continuous integration (CI) pipelines using Jenkins; configuring reverse proxy servers with Linux, Nginx, and Envoy; performing containerization (using Docker) and orchestration (using Kubernetes); deploying applications via Helm Charts; and performing real-time application performance monitoring and distributed request trace logging, using Datadog.

  • DE developing end-to-end n-tier applications, encompassing front-end development (using Angular), business logic implementation (using Node.js and Java), and data access layer design by building database integration frameworks or using Object-Relational Mapping tools (Mongoose and Spring Data JPA); applying robust security measures using JWT for authentication, HashiCorp Vault for sensitive data management, and SonarQube for code quality assurance; and ensuring service reliability through comprehensive testing, including unit, integration, and performance tests.

  • DE administering efficient data storage using relational databases (MariaDB and PostgreSQL) and NoSQL databases (MongoDB); improving latency and throughput using Redis-based in-memory caching strategies; ensuring data consistency through database transactions and isolation levels; and improving query performance by implementing indexes.

#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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