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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer - **Company:** Fmr LLC - **Location:** Denver, CO, United States (Remote available) - **Experience:** Expert - **Salary:** $107,000.0 - $216,000.0 - **Contract:** Franchise - **Skills:** Clean Code Principles, JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Amazon Web Services, Application Lifecycle Management, Business Logic, Automation of Tests, Unit Testing, Code Review, Information Systems, Computer Engineering, Continuous Integration, Data Structures, Java Platform Enterprise Edition (J2EE), Hypertext Transfer Protocols (HTTP), JSON, Junit, OpenID, Scrum Methodology, Role-Based Access Control, Security Assertion Markup Language (SAML), Web Application Security, Selenium, Simple Object Access Protocol (SOAP), Software Deployment, Software Engineering, Software Systems, Software Testing Automation Framework, TypeScript, Web Services, Working Model 2D, Extensible Markup Language (XML), Spring-boot, AngularJS, Kubernetes, Information Technology, Restful APIs, Terraform, Cucumber (Software), Docker, Jenkins - **Published:** September 17, 2026 - **Apply:** https://www.builtincolorado.com/job/principal-software-engineer-java-spring-boot-rest/11216841?handler=ApplyRedirect ## About the Role * 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, * 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 ## Description Develop and maintain scalable customer-facing full-stack applications using Java, Spring Boot, Angular, REST APIs, and cloud technologies. Design software, automate testing, deploy applications, and support CI/CD pipelines. Collaborate with architecture, UX, and product teams in an Agile environment. Mentor junior engineers, conduct code reviews, improve development practices, and translate business requirements into technical solutions. The summary above was generated by AI, 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. 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