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Principal Full Stack Engineer

Fidelity

Fidelity

Software Engineering
Durham, NC, USA
Posted on Jun 4, 2025
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Job Description:

***Multiple Positions Available***

Position Description:

Develops Web applications using NodeJS, ExpressJS, NestJS, or GraphQL. Develops modern Web applications using JavaScript or TypeScript technology stack. Builds Web experiences that provide simplified and personalized planning and advice services for customers. Accesses and retrieves data using Observer Patterns or Reactive Extensions for Java Script (RXJS). 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 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 (or foreign education equivalent) in Computer Science, Computer Information Systems, Engineering, Information Technology, Information Systems, Mathematics, Physics, or a closely related field and five (5) years of experience as a Principal Full Stack Engineer (or closely related occupation) performing Web and API development following Continuous Integration/Continuous Deployment processes and Secure Software Development Life Cycle (SSDLC) methodology in a financial service environment.

Or, alternatively, Master’s degree (or foreign education equivalent) in Computer Science, Computer Information Systems, Engineering, Information Technology, Information Systems, Mathematics, Physics, or a closely related field and three (3) years of experience as a Principal Full Stack Engineer (or closely related occupation) performing Web and API development following Continuous Integration/Continuous Deployment processes and Secure Software Development Life Cycle (SSDLC) methodology in a financial service environment.

Skills and Knowledge:

Candidate must also possess:

  • Demonstrated Expertise (“DE”) designing and developing highly scalable, distributed Web applications using front-end Web technologies -- Angular, JavaScript/Typescript, Node JS, HTML, CSS, and Bootstrap; and implementing Monorepo to build Web applications in a single repository and NX frameworks using support libraries -- ESLint, Storybook, and NgRx -- within the financial services industry.

  • DE developing RESTful API’s for integration with front-end applications using NodeJS; conducting functional, integration, and performance testing to ensure application reliability using mocking tools -- Wiremock, mockAPI, and Postman tools; testing Web and mobile applications using Jest, Cypress, and Cucumber; and performing unit testing using Jest, Mocha, and Junit.

  • DE developing highly scalable GraphQL APIs for integration with multi-platform front-end applications with varying data requirements; and sourcing API data from complex state and cache management sources (platform APIs) to create consistent, predictable cross platform APIs using NestJS.

  • DE performing application design, development, and testing using Karma, Selenium, Mocha, Junit, Puppeteer, and Cypress according to design patterns, Agile methodologies, and Test and Behavior Driven Development (TDD and BDD).

#PE1M2

#LI-DNI

Certifications:

Category:

Information Technology

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 every other week (all business days, M-F) in a Fidelity office.

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 experiences. For information about working at Fidelity, visit FidelityCareers.com. Fidelity Investments is an equal opportunity employer. Fidelity will reasonably accommodate applicants with disabilities who need adjustments to complete the application or interview process.

If you would like to request an accommodation, please contact us at:

accommodations@fmr.com

Apply

Join us

At Fidelity, you’ll find endless opportunities to build a meaningful career that positively impacts peoples’ lives, including yours. You can take advantage of flexible benefits that support you through every stage of your career, empowering you to thrive at work and at home. Honored with a Glassdoor Employees’ Choice Award, we have been recognized by our employees as a top 10 Best Place to Work in 2024. And you don’t need a finance background to succeed at Fidelity—we offer a range of opportunities for learning so you can build the career you’ve always imagined.

Fidelity's working model blends the best of working offsite with maximizing time together in person to meet associate and business needs. Currently, most hybrid roles require associates to work onsite all business days of one assigned week per four-week period (beginning in September 2024, the requirement will be two full assigned weeks).

We invite you to Find Your Fidelity at fidelitycareers.com.

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.

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.

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.

Benefits
Learning & development
Culture

Benefits that adapt to everything life sends your way

401(k) with company match

Medical, dental, vision and prescription drug coverage

16-week maternity leave & 12-week parental leave

Student loan assistance

Fidelity is invested in you

Committed to Professional Development

At Fidelity, we are constantly adapting to the changing needs of our customers, new technologies, and better ways of working. And we empower our employees to do the same, with an emphasis on developing skills and connections that will help propel you forward in your career while being able to make an impact for Fidelity’s customers around the world.

We offer a wide range of options for professional development including online, in-person, and mentor driven solutions. Special interest and networking groups are also part of our culture of empowerment, personal and professional enrichment, diversity and inclusion, and knowledge sharing.

Continuing Education & Training

  • Assess, build, and align your development plan through resources like our skill-building classroom and online courses.
  • Video-based training for technology, leadership, management & more.
  • Ongoing skills development and coaching opportunities.
  • Paid training with a facilitator who is dedicated to your onboarding and will track and evaluate your progress, giving you strategies to improve.
  • A range of talent development programs to support career mobility.

Mentoring

  • Utilize the skills of experienced leaders to enrich your career.
  • Dedicated mentors to help you grow into new areas of Fidelity’s business as you develop new skills.
  • An open atmosphere of knowledge sharing and collaboration.
  • Opportunities to pay it forward, sharing the knowledge you develop and as you help others define how they want their career to take shape.

Our Commitment to Diversity and Inclusion

"Fidelity believes in, and is committed to, fair and equitable treatment for every associate and customer, and to creating a safe and respectful environment, in which everyone is treated with kindness, compassion and respect." Abby Johnson | Chairman and CEO Fidelity Investments

At Fidelity, we are committed to building an enduring culture of inclusion and belonging that will attract, develop and retain a diverse workforce.

Fidelity’s ten affinity groups are self-organized groups of employees with common interests in areas such as race, ethnicity, gender or sexual orientation, or who share similar interests based on similar sets of experiences.

These Employee Resource Groups and Special Interest Groups are models of inclusion for Fidelity. They’re also a powerful form of engagement and development and can provide a pathway to visible leadership roles. Our affinity groups make a large contribution on the business, helping to ensure our products and services are delivered in a welcoming and equitable environment.

  • Over 22K employees participate in an affinity group.
  • Over 1,400 affinity group members volunteered for Fidelity Cares in 2020.
  • 74% increase in affinity group memberships over the last three years.

Giving Back to Our Communities

Throughout Fidelity, you’ll find a genuine commitment to social responsibility – where we strive to make an impact for customers, while also making an impact on the world.

Fidelity Cares

  • Provides associates with opportunities to actively volunteer and share their talents.
  • Hosts numerous company-wide volunteer events (in-person and virtual).
  • Partners with nonprofit organizations to support our local communities.
  • More than 12,000 associates donate time annually – from interns to SVPs.
  • Impact includes refurbishing schools, donating books and supplies, and teaching financial literacy.

Fidelity Charitable®

  • Created to make it easy for people to support charitable organizations they care about.
  • Helped deliver $7.3 billion in donor-recommended grants to charity in 2019.
  • Supported more than 300,000 unique charities around the world.
  • Since its inception, more than $42 billion has been given to public charities.

Technology careers at Fidelity

Imagine and create the next generation of financial products and tools.

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