Principal Full Stack Software Engineer

Job Description:

Are you interested in joining a dynamic, innovation focused, high impact team? Do you enjoy building new products and services in a collaborative, fast paced environment?

Join Fidelity Labs, our in-house new business incubator, as one of the founding Principal Full Stack Engineers for an early-stage SaaS platform targeted at the Charitable sector. In this role, you will be responsible for working across the development and product teams to build and scale a modern SaaS solution.

The Software Engineering team delivers next-generation software application enhancements and new products for a changing world. Working at the modern, we build and develop software for platforms, applications and diagnostics - all with the most advanced technologies, tools, software engineering methodologies and the collaboration of internal and external partners.

As a Principal Full Stack Engineer, you will play a pivotal role in building new application experiences and business capabilities to support a new business initiative. You will work closely with the Director of Engineering and cross-functional teams, driving technical decisions and ensuring the delivery of scalable, maintainable solutions.

Key Responsibilities:

• Lead the design and development of modular, reusable front-end components in Angular, enabling sharing across multiple product teams.

• Architect and implement robust back-end services using Java Spring Boot, JPA, and AWS, with a focus on scalable, secure, and maintainable solutions.

• Champion best practices in modular application design, including micro-frontends, shared libraries, and integration patterns.

• Collaborate with product, UX, and engineering teams to translate business requirements into technical solutions.

• Drive the adoption of modern CI/CD pipelines and DevOps practices for rapid, reliable delivery.

• Mentor and guide other engineers, fostering a culture of technical excellence and continuous improvement.

Required Skills & Experience:

• 6 - 10 years of professional software engineering experience, with a proven track record of delivering complex applications.

• 3 - 5 years of technical leadership experience

• Deep full-stack expertise in HTML, CSS, javascript, Angular, Java Spring Boot, JPA, AWS, and databases systems.

• Strong understanding of modular architecture, component sharing, and scalable design principles.

• Experience building and integrating RESTful APIs and working with cloud-native technologies.

• High degree of autonomy and ownership; able to drive projects forward with minimal oversight.

• Excellent communication and collaboration skills, with the ability to influence and align stakeholders.

Bonus Points:

• Experience with micro-frontends, Storybook JS, and API management tools.

• Prior work in a startup or incubator environment, building products from the ground up.

The Team

We are Fidelity Labs, Fidelity Investments' in-house fintech incubator with a mission to build new businesses to drive growth for Fidelity. We seek to shape the future of our industry by building new products and services to improve the lives of the diverse set of customers, businesses and financial institutions we serve.

Fidelity Labs is a dynamic workplace that combines the best parts of startup life-building from scratch, adapting quickly, and moon-shot ambition-with the scale and stability of an industry leader. We provide a safe space for startup teams to explore new business ideas, quickly test them with customers, and scale the most promising concepts within an existing business unit, or as a new venture.

This opportunity is brought to you by Fidelity Labs. Learn more at labs.fidelity.com.

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.

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.

Client-provided location(s): Boston, MA, North Smithfield, RI, Merrimack, NH, Westlake, TX

Job ID: Fidelity-2117244

Employment Type: OTHER

Posted: 2025-08-29T23:42:54