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Principal Front End Engineer Jobs (NOW HIRING)

Pennymac

Frontend Engineer - AI Platform

Carrollton, TX · On-site

$75K - $130K/yr

A Typical Day As a Frontend Engineer on the AI Platform Services team, you will be a core builder ... principal engineers. You will tackle unique challenges in Generative UI , real-time state ...

Fortinet

Principal Front-End Web Developer

Sunnyvale, CA · On-site +1

$148K - $180K/yr

We're seeking a self-motivated, detail-oriented web front-end engineer with significant JS/HTML/CSS experience to help maintain and enhance the web-based GUI for the FortiSwitch network switch. Our ...

GDIT

Front End Developer

Annapolis Junction, MD · On-site

$161K - $218K/yr

Yes FRONT END ENGINEER PRINCIPAL GDIT is seeking an experienced Frontend Developer to join our team of building scalable, maintainable and high-performance UI applications using a microservices ...

APPLY

Principal Agentic Engineer (Front-end)

$138K - $185K/yr

The Principal Agentic Engineer (Front-end) is a senior technical leader responsible for building scalable, high-quality frontend applications that power AI-driven digital experiences. This role ...

Anagh Technologies, Inc.

Principal React Engineer

Chicago, IL · On-site

$139K - $186K/yr

Principal React Engineer , Location - Remote-- Chicago, IL Contract. 15+ years Experience Principal ... Mentor and support other frontend developers through code reviews and continuous feedback * Take ...

Lendistry

Senior Staff Engineer Frontend

Lumberton, NC

$109K - $150K/yr

The ideal candidate is a front-end expert with deep expertise in modern web technologies, including ... Additionally, the Staff/Principal Engineer will mentor junior engineers, foster a culture of ...

Lendistry

Senior Staff Engineer Frontend

Tustin, CA · On-site

$128K - $176K/yr

The ideal candidate is a front-end expert with deep expertise in modern web technologies, including ... Additionally, the Staff/Principal Engineer will mentor junior engineers, foster a culture of ...

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Principal Front End Engineer information

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How much do principal front end engineer jobs pay per year?

As of Jul 10, 2026, the average yearly pay for principal front end engineer in the United States is $160,936.00, according to ZipRecruiter salary data. Most workers in this role earn between $135,000.00 and $181,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive in the Principal Front End Engineer position, and why are they important?

To thrive as a Principal Front End Engineer, you need deep expertise in HTML, CSS, JavaScript frameworks (such as React, Angular, or Vue), web performance optimization, and experience leading large-scale projects, often backed by a degree in computer science or a related field. Familiarity with build tools (Webpack, Babel), version control systems (Git), and CI/CD pipelines is essential, and certifications in cloud platforms or front-end technologies can be beneficial. Excellent leadership, mentoring skills, and strong communication are crucial for guiding teams and collaborating across departments. These capabilities are important for delivering robust, scalable user interfaces and ensuring that front-end engineering standards are upheld throughout the organization.

What is a Principal Front End Engineer job?

A Principal Front End Engineer is a senior-level technical leader responsible for architecting, developing, and optimizing front-end applications. They set coding standards, mentor engineers, and collaborate cross-functionally to ensure scalable and maintainable solutions. This role requires deep expertise in front-end technologies, frameworks, and performance optimization. Additionally, they often contribute to strategic technical decisions and drive innovation to enhance user experience.

What is a typical day like for a Principal Front End Engineer?

A typical day for a Principal Front End Engineer often includes designing and reviewing front-end architectures, mentoring team members, and collaborating closely with product managers, UX/UI designers, and back-end developers. You'll likely participate in code reviews, make high-level technical decisions, and help troubleshoot complex issues while ensuring that front-end best practices are followed. Additionally, you may be involved in setting technical roadmaps, assessing new technologies, and driving process improvements across the engineering team. This role involves a blend of hands-on coding, strategic planning, and cross-functional leadership in a dynamic, fast-paced environment.

More about Principal Front End Engineer jobs
What are the most commonly searched types of Principal Front End Engineer jobs? The most popular types of Principal Front End Engineer jobs are:
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Principal Front End Engineer jobs near you
Infographic showing various Principal Front End Engineer job openings in the United States as of July 2026, with employment types broken down into 1% As Needed, 76% Full Time, 18% Part Time, 2% Temporary, and 3% Contract. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution, with an average salary of $160,936 per year, or $77.4 per hour.

Staff / Principal Frontend Software Engineer

Twenty Technologies, Inc

Arlington, VA • On-site

$192K - $455K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 4 days ago

Job description

About the Company
America is under sustained cyber attack. Our adversaries infiltrate our networks, steal our IP, and degrade the digital infrastructure that modern life runs on. They've learned-correctly-that those attacks rarely produce consequences.
Twenty was founded to change that, by making our adversaries think twice before they attack us. Our vision is American and allied primacy in cyberspace-a future where they cannot contest us, deterrence is assured, and the free world remains secure.
Founded in 2024, Twenty Technologies (www.twenty.io) industrializes offensive cyber operations for the U.S. and its allies. Headquartered in Arlington, Virginia, Twenty has raised $138M from Accel, Caffeinated Capital, Friends & Family Capital, Point72 Ventures, General Catalyst, and In-Q-Tel.
Role Summary
You'll own the frontend architecture for mission-critical operator experiences-building high-performance interfaces that visualize complex cyber operation data in real time. You'll lead technical direction for UI systems, set the bar for engineering quality, and mentor engineers to move faster with confidence. You'll partner closely with backend, product, design, and operational stakeholders to ship capabilities that must work reliably in both cloud and on-premises environments. You'll be embedded in a cross-functional team building capabilities that go directly into operational use - small team, tight feedback loops, real consequences.
Who You Are
  • You care about building software that has real-world impact in high-stakes environments.
  • You lead with high standards and high support-clear feedback, strong mentorship, calm execution.
  • You think in systems: performance, reliability, accessibility, and maintainability are first-class concerns.
  • You make good tradeoffs under constraints and can explain them crisply to technical and non-technical partners.
  • You enjoy turning complex data into intuitive workflows that help users make decisions quickly.
  • You're comfortable owning ambiguous problems end-to-end and driving them to measurable outcomes.
  • You default to secure engineering practices and treat trust, safety, and correctness as non-negotiable.

What You'll Do
  • Architect and build sophisticated React/TypeScript applications that operate smoothly at scale.
  • Design real-time UI experiences for complex cyber operation data, optimizing for speed and clarity.
  • Lead frontend technical architecture and design decisions.
  • Build and evolve interactive visualization systems (e.g., graphs, timelines, streaming views).
  • Establish reusable frontend architecture patterns and component libraries for consistency and velocity.
  • Raise engineering excellence via code review, standards, testing strategy, and performance practices.
  • Mentor junior engineers through pairing, feedback, technical coaching, and knowledge transfer.
  • Coordinate execution across design, product, backend, and operations to deliver end-to-end features.
  • Troubleshoot production issues, lead frontend performance investigations, and improve reliability over time.

Qualifications
Must Have
  • You have 8+ years of professional frontend software development experience.
  • You have deep expertise building production React.js applications with TypeScript.
  • You have strong command of modern web fundamentals (JavaScript/TypeScript, HTML, CSS).
  • You have led frontend technical initiatives and mentored engineers through delivery and growth.
  • You have experience building for performance at scale (profiling, optimization, rendering strategies).
  • You have experience with automated testing practices and frameworks (e.g., Vitest, React Testing Library, Playwright or Cypress for E2E).
  • You have hands-on experience with state management patterns and libraries (e.g., Redux, Zustand, or React Query).
  • You have strong collaboration skills with product and design to deliver excellent UX.
  • You have strong command of Git in a professional engineering environment, including branch workflows, code review practices, and CI integration.
  • You have a Bachelor's degree in CS/Engineering (or equivalent practical experience).
Nice to Have
  • You have experience with complex data visualization (e.g., D3.js, Chart.js, or similar).
  • You have worked with graph databases and understand graph query patterns (e.g., Neo4j).
  • You have experience with real-time streaming data and production visualization of live systems.
  • You have experience in defense, security, or other mission-critical domains.
  • You have built UI experiences that surface AI/ML outputs in operational workflows.
  • You have experience with component library or design system development (e.g., Storybook).

Benefits
What's on the table:
  • Health. Medical, dental, and vision plan options. Life / AD&D, disability coverage options.
  • Family. Paid parental leave for eligible full-time employees. 12 weeks for birthing parents, 4 for non-birthing parents, 6 weeks for adoptive, foster, or intended parents through surrogacy.
  • Vacation. Paid holidays and flexible PTO. Take what you need.
  • Retirement. 401(k) with pre-tax and Roth options. HSA/FSA options, dependent care FSA.
  • At the office. Commuter benefits. On-site garage parking. Bike storage. Building fitness center. Desk setup stipend.

Benefits vary by location, role, and eligibility. Full plan details provided during the interview and offer process.
If this role sounds like you, apply and share with us your interest.
Some positions may require eligibility to obtain a U.S. Government security clearance. Any clearance requirement will be listed in the role description.
Twenty is an equal opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, veteran status, disability, or any other protected status.
If you need a reasonable accommodation during the hiring process, let us know and we will work with you.

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