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Principal Full Stack Engineer Jobs (NOW HIRING)

We are seeking a Principal Full Stack Engineer to lead the architecture, design, and modernization of our enterprise healthcare platforms. In this role, you will bridge deep backend expertise with ...

Principal Full Stack Engineer

Houston, TX · On-site

$128K - $172K/yr

Role Overview We are seeking a Principal Full Stack Engineer to lead the architecture, design, and modernization of our enterprise healthcare platforms. In this role, you will bridge deep backend ...

We are seeking a Principal Full Stack Engineer to lead the architecture, design, and modernization of our enterprise healthcare platforms. In this role, you will bridge deep backend expertise with ...

We are seeking a Principal Full Stack Engineer to lead the architecture, design, and modernization of our enterprise healthcare platforms. In this role, you will bridge deep backend expertise with ...

Principal Full Stack Engineer We are Lennar Lennar is one of the nation's leading homebuilders, dedicated to making an impact and creating an extraordinary experience for their Homeowners ...

Principal Full Stack Engineer We are Lennar Lennar is one of the nation's leading homebuilders, dedicated to making an impact and creating an extraordinary experience for their Homeowners ...

Principal Full Stack Engineer We are Lennar Lennar is one of the nation's leading homebuilders, dedicated to making an impact and creating an extraordinary experience for their Homeowners ...

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Principal Full Stack Engineer information

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$44.5K

$134.8K

$190.5K

How much do principal full stack engineer jobs pay per year?

As of Jul 14, 2026, the average yearly pay for principal full stack engineer in the United States is $134,771.00, according to ZipRecruiter salary data. Most workers in this role earn between $111,000.00 and $158,000.00 per year, depending on experience, location, and employer.

How does a Principal Full Stack Engineer typically balance hands-on coding with leadership and mentoring responsibilities?

As a Principal Full Stack Engineer, you'll often split your time between developing complex features, setting technical direction, and guiding team members. While you remain actively involved in coding, a significant part of your role involves mentoring junior engineers, conducting code reviews, and collaborating closely with cross-functional teams such as product management and design. This balance allows you to influence both the technical quality and the professional growth of your team, while ensuring delivery of robust, scalable solutions.

What are the key skills and qualifications needed to thrive as a Principal Full Stack Engineer, and why are they important?

To thrive as a Principal Full Stack Engineer, you need deep expertise in both front-end and back-end development, a strong grasp of software architecture, and a proven track record leading complex projects—typically supported by a relevant degree or equivalent experience. Mastery of multiple programming languages (such as JavaScript/TypeScript, Python, or Java), cloud platforms, CI/CD pipelines, and frameworks like React or Node.js is usually required, along with familiarity with DevOps practices. Exceptional communication, mentorship, and problem-solving abilities help you guide teams and collaborate across departments. These skills are essential to design scalable systems, drive technical excellence, and ensure team alignment on strategic goals.

What is a Principal Full Stack Engineer?

A Principal Full Stack Engineer is a highly experienced software engineer who leads the design, development, and implementation of both front-end and back-end systems. They possess deep technical expertise across multiple programming languages, frameworks, and architectures, and often set the technical direction for projects or teams. In addition to coding, they mentor other engineers, make architectural decisions, and collaborate with stakeholders to ensure high-quality, scalable solutions. Their role typically includes significant responsibility for system performance, security, and maintainability.
More about Principal Full Stack Engineer jobs
What cities are hiring for Principal Full Stack Engineer jobs? Cities with the most Principal Full Stack Engineer job openings:
Infographic showing various Principal Full Stack Engineer job openings in the United States as of July 2026, with employment types broken down into 95% Full Time, 2% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $134,771 per year, or $64.8 per hour.
Principal, Full Stack Engineer

Principal, Full Stack Engineer

Fidelity Investments

Jersey City, NJ • On-site

$107K/yr

Full-time

Medical, Retirement, PTO

Re-posted 9 days ago


Fidelity Investments rating

8.7

Company rating: 8.7 out of 10

Based on 266 frontline employees who took The Breakroom Quiz

17th of 148 rated financial services


Job description

Job Description:

Note: Fidelity will not provide immigration sponsorship for this position.

The Role

We are seeking a Principal Full Stack Engineer to join our Quantitative Research and Investments Technology (QRIT) team in Fidelity Asset Management Technology. This role will partner with the quant research and investments teams to design, build, enhance, and support a comprehensive Systematic Alternatives portfolio construction and Management System. This individual will include hands-on development collaborating with team of quantitative researchers, software engineers and quantitative developers.

The Expertise and Skills You Bring

  • Bachelor's degree in a computational field such as Computer Science, Master's degree is preferred
  • Minimum of 7 years of proven professional experience working in financial services (Asset Management experienced preferred)
  • Strong experience in system architecture, design patterns and software engineering fundamentals such as data structures, OOP, functional programming, data modeling.
  • Experience with Python or Java and micro-services / RESTful APIs
  • Experience working with SQL database (Oracle, Snowflake)
  • Experience working on AWS cloud environment and working knowledge of CI/CD and DevOps
  • Experience integrating financial data with Angular UI
  • Exposure to test automation frameworks (unit and integration)
  • Demonstrated experience with portfolio construction and management is a plus
  • Nice to have experience with derivatives and financial instruments such as Futures, interest rate swaps (IRS), total return swaps (TRS), and FX forwards.
  • Proven ability to capture requirements and formulate plans by partnering with various stakeholders
  • Strong communication, interpersonal and relationship building skills to influence decisions and engage across Fidelity and at all levels of the organization

The Team

Asset Management Technology (AMT) provides worldwide technology and support to all the Investment Management, Research, Trading, and Investment Operations functions. We are seeking a Principal, Full Stack Engineer, to join our Quantitative Research and Investing Technology organization. This role will be part of our Quantitative Engineering team, which is responsible for delivering and maintaining solutions for Quant Research team.

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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