Principal Full Stack Engineer

Fidelity Investments

Denver, CO · Greenwood Village, COFull-time$107,000–$216,000Posted Oct 14, 2026

About the role

Fidelity will not provide immigration sponsorship for this position.

Job Description:

The Team

Fidelity is looking for a Principal Full Stack Engineer to join the Fidelity Institutional Technology Development Team. This candidate will be applying strong software development and test automation skills to design, develop, test, deploy, maintain, and improve FIT customer-facing software solutions. You will also be enabling your Scrum team in accepting the development and automation frameworks and standard methodologies to ensure we are building the right product the right way.

The Expertise You Have

A Bachelor's degree or equivalent experience in computer science, computer engineering, information systems preferred, with at least 8 years of development experience

Expertise in building scalable web and middle-tier applications using Java, JavaScript, Spring, Spring Boot and Angular.

Solid understanding and hands-on experience with API authentication, RBAC Authorization and SAML/OIDC

Strong foundation of software design, data structures and algorithms.

Strong experience with web services (JSON, XML, REST, SOAP, etc.)

Experience building cloud enabled applications leveraging 12 factor design

Experience with Docker containerization and AWS cloud deployment/application management

Experience with unit testing and test automation libraries/strategies.

Experience with CI/CD pipelines, Kubernetes, Terraform and Jenkins

Experience in delivering software in the Agile environment

Experience in coaching and mentoring junior engineers and performing code reviews

Strong verbal and written communication skills, with the ability to understand and parse business logic into technical requirements, experienced in an agile scrum environment.

Experience with brokerage and financial services application development is a plus

Working knowledge of design system is a plus

Knowledge of web security attack methods and measures to defend against them is a plus

The Skills You Bring

Multi-stack engineer with knowledge in a breadth of development technologies and test automation frameworks (Java/J2EE, Springboot, Junit, Cucumber, Selenium, Serenity, Angular/JavaScript, TypeScript, Web Services, REST, HTTP)

Passionate about business-driven development, developing robust software, writing testable and maintainable code

Strong leadership skills to guide, encourage, mentor, and motivate other software engineers within the squad and the product area

Strong communications and problem-solving skills.

Desire to collaborate and work closely with others within the product area.

Experience working in an agile environment

Exposure to test automation

Ability to step in the customer’s shoes and truly understand the value that is being delivered with each sprint

Has keen attention to detail and wants to not only detect hard problems but also solve them

Able to learn large software systems end-to-end quickly

Keenly interested in learning new technologies and their adoption

Able to work with remote and international team members

Obsessed with creating the best end-to-end customer experience

Owns the outcome by taking personal accountability for delivering strong results

The Value You Deliver

Developing/Deploying software in a fast-paced environment

Collaborating with colleagues on technical implementation and process improvement

Working closely with Architecture, Development, User Experience, and Product Owner to design new features

Keeping up to date with latest technologies and frameworks

Mentoring junior team members to improve team velocity

Strong analytical, communication, and organizational skills and the ability to manage multiple tasks at a given time

Must take initiative, be a decisive decision maker, show confidence in decisions being made and see tasks through to completion

Working and collaborating with new technologies to solve test challenges and process improvements

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.

The base salary range for this position is $107,000-216,000 USD per year.

Placement in the range will vary based on job responsibilities and scope, geographic location, candidate’s relevant experience, and other factors.

Base salary is only part of the total compensation package. Depending on the position and eligibility requirements, the offer package may also include bonus or other variable compensation.

We offer a wide range of benefits to meet your evolving needs and help you live your best life at work and at home. These benefits include comprehensive health care coverage and emotional well-being support, market-leading retirement, generous paid time off and parental leave, charitable giving employee match program, and educational assistance including student loan repayment, tuition reimbursement, and learning resources to develop your career. Note, the application window closes when the position is filled or unposted.

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.

Certifications:

Category:

Information Technology

Responsibilities

  • Design, develop, test, deploy, maintain, and improve customer-facing software solutions.
  • Collaborate with architecture, development, user experience, and product teams to deliver features.
  • Improve development practices, automation frameworks, and engineering processes.
  • Mentor junior engineers and contribute to code reviews.
  • Deliver software in an agile environment and take ownership of outcomes.

Qualifications

  • At least 8 years of software development experience.
  • Expertise with Java, JavaScript, Spring, Spring Boot, and Angular.
  • Experience with API authentication, RBAC authorization, SAML/OIDC, and web services.
  • Experience with cloud-enabled applications, Docker, AWS, CI/CD, Kubernetes, Terraform, and Jenkins.
  • Experience with unit testing and test automation.
  • Strong software design, data structures, algorithms, communication, and problem-solving skills.
  • Bachelor's degree in a relevant field or equivalent experience preferred.
  • Financial services application development experience is a plus.

Benefits

  • Comprehensive health care coverage and emotional well-being support.
  • Retirement benefits and generous paid time off.
  • Parental leave.
  • Charitable giving employee match program.
  • Student loan repayment, tuition reimbursement, and career learning resources.

Skills mentioned

JavaJavaScriptSpring BootAngularREST APIsOpenID ConnectDockerAWSKubernetesCI/CD

About Fidelity Investments

Fidelity’s mission is to strengthen the financial well-being of our customers and deliver better outcomes for the clients and businesses we serve. Fidelity’s strength comes from the scale of our diversified, market-leading financial services businesses that serve individuals, families, employers, wealth management firms, and institutions. With assets under administration of $15.0 trillion, including discretionary assets of $5.9 trillion as of March 31, 2025, we focus on meeting the unique needs of a broad and growing customer base. Privately held for 78 years, Fidelity employs more than 77,000 associates across the United States, Ireland, and India. For our Terms and Conditions, please visit http://go.fidelity.com/LIterms

Financial Services10,001+ employeesBoston, MA

H-1B sponsorship history

Historical employer filing data was found for Fidelity Investments. The employer record includes 369 historical certified applications. This is employer-level history, not a guarantee that this role currently offers sponsorship.