Principal Full Stack Engineer

Job Description:

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 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. 

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 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. 

Required Skills & Experience: 

• 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. 

Bonus Points: 

• Prior experience developing Gen AI applications

• 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. 

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

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.

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