Principal Full Stack Engineer

Fidelity Investments•Boston, MA

6d•$107,000 - $216,000

About The Position

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 GenAI startup for investment research. In this role, you will be responsible for working across the development and product teams to build and scale a modern. 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.

Requirements

A Bachelor's or Master’s degree in computer science, Engineering, or a related field
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 Python, EKS, HTML, CSS, javascript, Angular, 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.

Nice To Haves

Prior experience developing Gen AI applications
Prior work in a startup or incubator environment, building products from the ground up.

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 Python, EKS, 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.