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Principal Full Stack Engineer

Principal Full Stack Engineer

locationSalt Lake City, UT, USA
PublishedPublished: 9/24/2025
Full Time

Job Description:

Principal Software Engineer – Experience Engineering

Are you interested in serving the needs of millions of customers by building the best-in-class digital experience that helps them in financial planning, investing, and retirement solutions? Our chapter comprises teams that work on a wide range of applications and platforms like Fidelity.com, Fidelity Mobile and Investor Centers. We're looking for product-aware engineers who are passionate, inquisitive, and responsible individuals to help us on our mission to deliver the best omni-channel experience to our customers.

The Purpose of Your Role

Our teams build and contribute to Fidelity’s digital presence. As a principal software engineer, you will help us build the omni-channel user experiences and the underlying platforms needed to support our digital presence. You’ll be setting the direction, work on building entire features, taking these from concept to deployment, and owning the outcome as part of our autonomous, cross functional teams. You'll have the opportunity to contribute ideas to improve our products as well as develop your skills, learn new technologies and languages, and continue to learn. We're looking for highly motivated individuals who work well in a collaborative, iterative, and fast-paced environment.

The Expertise We’re Looking for

  • Designing, developing, and maintaining Node.js based web applications in a fast-paced environment.
  • Design and Development of front-end solutions using Angular, Typescript, JavaScript, CSS, HTML & Browser Developer tools.
  • Designing and implementing continuous JS environments using Webpack, Grunt, Gulp, etc.
  • Knowledge of DevOps, Automated Testing and Continuous Delivery using technologies such as Groovy, Jenkins, Concourse preferred.
  • Experience consuming RESTful APIs.
  • Exposure to native mobile development on iOS and/or Android a bonus.
  • Bachelor’s Degree in Computer Science, Information Science, Mathematics, Physics (or equivalent).

The Skills You Bring

  • Strong understanding of Computer Science fundamentals (Data Structures, Algorithms).
  • Your knowledge of HTTP based APIs, Networking and how the internet works.
  • Strong Version Control, Branching strategies and Git skills.
  • Your hands-on experience working with package management using Node.js, NPM, Express.
  • Proven expertise and mindset of employing Automation for Development, Testing & Deployment.
  • Providing technical leadership and mentoring to more junior team members.
  • Appetite for learning new skills and constantly learning.

The Value You Deliver

  • Using business knowledge to translate the vision for initiatives into business solutions by developing complex interconnected software applications and conducting studies of alternatives.
  • Creating and maintaining comprehensive documentation for multiple applications or subsystems.
  • Participate in iteration planning to maintain velocity and deliver quality each sprint.
  • Analyzing business requirements and system development specifications.
  • Participating in problem solving, troubleshooting, performance tuning, production support, and maintenance of existing applications.
  • Playing a key role in resolving technical roadblocks involving multiple technologies.
  • Ensuring code reviews, unit testing, and integration testing are completed efficiently and effectively.
  • Helping to coordinate the delivery of technical components across internal/external technical teams.
  • Contributing to process-improvement initiatives to maximize velocity for the product team.

How Your Work Impacts the Organization

We believe that diversity in background and experience will foster an inclusive and engaging work environment for our employees. This ultimately enables us to deliver a better product for our customers.

Being technically competent is only telling half the story. We believe that delivering the best possible customer experience requires an artful blend of human ingenuity and technology. While we value smart technologists, we are fanatics about our culture that promotes autonomy and leadership at all levels.

People who are great cultural fits demonstrate curiosity to learn, are unafraid to break things, step up and take the lead, take ownership of their projects, and thrive by sharing knowledge and demonstrating our core pillars:

  • Imagine. Innovate. Inspire. Keep it cool: Nurture an inclusive organizational culture, foster positive energy & family spirit, recognize greatness, support each other & enjoy the journey.
  • Elevate the floor; Influence the horizontal: Commit to developing leadership at all levels. Help your peers & team get better by raising standards within and around while maintaining a strong focus on building future leaders.
  • Tightly aligned; loosely coupled: Establish or enhance partnerships across the organization to ensure alignment towards enterprise standards, tools and reusability while providing direction for teams to operate autonomously.
  • Level Up on Craftsmanship: Treat learning as a journey not a destination. Commit to learning and teaching as a part of your life.
  • Build the Best Tech together: Promote innovation driven by purpose and practicing autonomy with responsibility.

Company Overview

At Fidelity, we are focused on 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.

Certifications:

Category:

Information Technology

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 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.