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Freelance Principal Front End Engineer Jobs (NOW HIRING)

Career Renew

Principal Engineer, Frontend - DeFi

Miami, FL · Remote

$200K - $300K/yr

Career Renew is recruiting for one of its clients a Principal Engineer, Frontend - DeFi - this is a fully remote role for US/EU based candidates. Salary range: 200-300K USD yearly plus benefits plus ...

Make

Frontend Engineer (Freelance)

Dallas, TX · On-site +1

Join a team of AI-first engineers * Build and maintain frontend functionality using React/Typescript * Develop clear, reliable user experiences for a data-rich web portal. * Integrate frontend ...

Delphinus Engineering

Front-End Engineer

Philadelphia, PA · On-site +1

$75K - $125K/yr

The Front-End Engineer will work with a modern tech stack to build and enhance software that ... LOCATION: Philadelphia, PA PRINCIPAL DUTIES/RESPONSIBILITIES: * Design, develop, and maintain ...

NetSage

UI Front-End Software Engineer-Principal

Annapolis, MD · On-site

$103K - $137K/yr

We are seeking a Principal Front-End Software Engineer with deep User Interface (UI) expertise to lead the design and development of modern, user-focused web applications that enable mission-critical ...

Delphinus Engineering

Front-End Engineer

Philadelphia, PA · On-site

$75K - $125K/yr

The Front-End Engineer will work with a modern tech stack to build and enhance software that ... LOCATION: Philadelphia, PA PRINCIPAL DUTIES/RESPONSIBILITIES: * Design, develop, and maintain ...

GDIT

WV · On-site

Yes SOFTWARE DEVELOPER SENIOR What You'll Do Define and drive the strategic direction for frontend ... principal level Required Must be a US Citizen and able to obtain and maintain Public Trust 6C ...

Circuit

Staff Frontend Engineer

Austin, TX

The Role As a Staff Frontend Engineer at Circuit, you will be responsible for building high-quality ... Proven experience operating as a staff or principal-level individual contributor within a ...

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Freelance Principal Front End Engineer information

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

As of Aug 12, 2026, the average yearly pay for freelance 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 most commonly searched types of Principal Front End Engineer jobs? The most popular types of Principal Front End Engineer jobs are:
Freelance Principal Front End Engineer jobs near you
Infographic showing various Freelance Principal Front End Engineer job openings in the United States as of June 2026, with employment types broken down into 76% Full Time, and 24% Part Time. Highlights an 96% Physical, 1% Hybrid, and 3% Remote job distribution, with an average salary of $160,936 per year, or $77.4 per hour.

Software Engineer - Frontend (Staff+)

Cogent Security

San Francisco, CA • On-site

$100K - $300K/yr

Full-time

Re-posted 15 days ago

Job description

About Cogent
Cogent is an Applied AI Lab building the next generation of AI agents for cybersecurity. AI has fundamentally changed how attacks happen, allowing malicious actors to operate at unprecedented speed and scale. Cogent's "AI Taskforce" assesses petabytes of enterprise data to remediate these issues before critical breaches occur.
To stay at the cutting edge, we blend frontier research with real-world execution. Alongside our core product work, Cogent Research serves as our applied AI lab, providing the research horsepower needed to make truly agentic security workflows a reality.
Since coming out of stealth, Cogent has experienced rapid growth. We partner with Fortune 500 companies to secure some of the most complex production environments in the world.
We're backed by Greylock and we've built a team with the best minds in applied AI. Our team is comprised of people from:
  • Top universities like Stanford, Berkeley, Penn, Duke, Carnegie Mellon, Waterloo
  • Unicorn, high-growth companies like Scale AI, Databricks, Stripe, Tesla, Coinbase
  • World class cybersecurity experts from Wiz, Abnormal AI, Zscaler
  • Preeminent research labs like Deepmind and SAIL

About the Role
As a Staff Frontend Engineer, you will own the frontend platform and experience that enables customers to visualize, understand, and act on complex security data with confidence.
This is a Staff+ caliber role: you've operated at least at Staff, Senior Staff, or Principal Frontend Engineer level at some point in your career, and you're excited to set the technical direction for a brand-new platform. You will design the frontend infrastructure, build "golden" component libraries, and make the platform AI-friendly, all while continuing to ship customer-facing features.
You'll combine deep architectural thinking with hands-on development, ensuring that our frontend stack is both elegant and resilient as we scale. Over time, you'll help mentor other frontend engineers and we will build a team around the foundations you create.
What You'll Do
  • Define Frontend Architecture - Establish the core architecture and patterns for our web applications, laying the foundation for long-term scalability and performance.
  • Build Golden Libraries & Platform - Create reusable component libraries and tooling that set the standard for quality and enable rapid, consistent development across the team.
  • Build AI-Driven, User-Focused Features - While setting up core frontend infrastructure, design and deliver high-impact features that seamlessly integrate AI-powered capabilities, ensuring clarity, usability, and reliability for complex security workflows.
  • Mentor and Influence - Serve as a mentor and technical leader for future frontend engineers; help us grow a team that values craftsmanship and excellence.
  • Drive Engineering Craftsmanship - Uphold high standards of code quality, attention to detail, and thoughtful design. Balance speed with sustainable engineering practices.

About You
  • Have operated at Staff+ level (Staff, Senior Staff, or Principal Frontend Engineer) at some point in your career.
  • 5+ years of professional software engineering experience
  • Deep expertise in React, TypeScript, and modern web application architecture.
  • Strong background in frontend infrastructure-component libraries, build systems, state management, and performance optimization.
  • Demonstrated ability to work autonomously, owning projects end-to-end with minimal oversight
  • Exceptional attention to detail and a passion for engineering craftsmanship.
  • Excellent collaboration and communication skills; thrive in fast-paced, high-impact environments.

For California Based Applicants
The standard base salary range for this position is $100,000 - $300,000 annually. Compensation offered will be determined by factors such as location, job level, job-related knowledge, skills, and experience. Certain roles may be eligible for variable compensation, equity, and benefits.
We are committed to building an inclusive and diverse company. We do not discriminate based on gender, ethnicity, sexual orientation, religion, civil or family status, age, disability, or race.

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