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Senior Frontend Engineer Jobs in California (NOW HIRING)

Senior Frontend Engineer

San Francisco, CA · On-site

$144K - $198K/yr

They are seeking a Senior Frontend Engineer with expertise in React and TypeScript to build consumer-facing crypto and payments products, enhancing user experiences in blockchain transactions.

Senior Frontend Engineer

San Francisco, CA

$144K - $198K/yr

The Role: We're looking for a Senior Frontend Engineer to help shape the future of our flagship credit building product - the engine behind our mission to help millions of Americans build and ...

Senior Front-End Engineer

San Francisco, CA · On-site

$144K - $198K/yr

As a Senior Front-End Engineer, you will develop reusable UI components, enhance user experience, and contribute to the design of the Navigator platform while collaborating with cross-functional ...

Senior Front-End Engineer

Palo Alto, CA · On-site

$144K - $198K/yr

They are seeking a Senior Front-End Engineer to develop self-contained, reusable components and enhance their Navigator platform, ensuring a high-quality user experience while collaborating with ...

... Senior Frontend Engineer on our Frontend Engineering Team, you'll architect and build the core payment experiences that power thousands of businesses. You'll develop our comprehensive payments ...

Senior Front-End Engineer

El Segundo, CA · On-site

$130K - $179K/yr

As a Senior Front-End Engineer, you will develop reusable UI components and ensure a high-quality user experience while collaborating with cross-functional teams on the Navigator platform.

Senior Front-End Engineer

El Segundo, CA · On-site

$130K - $179K/yr

They are seeking a Senior Front-End Engineer to craft reusable UI components and improve user experience while collaborating with cross-functional teams. Responsibilities : • Contribute to our ...

... Senior Frontend Engineer on our Frontend Engineering Team, you'll architect and build the core payment experiences that power thousands of businesses. You'll develop our comprehensive payments ...

As a Senior Frontend Engineer, you will be instrumental in building intuitive, high‑performance, and dependable web applications that empower our users to proactively detect and prevent risk. You ...

New

Senior Frontend Engineer

San Francisco, CA · On-site

$144K - $198K/yr

About the Role We're looking for a seasoned engineer and frontend technical lead - someone who can ... We're a small, senior team building Siteline - a billing platform for the construction industry.

... Senior Frontend Engineer on our Frontend Engineering Team, you'll architect and build the core payment experiences that power thousands of businesses. You'll develop our comprehensive payments ...

San Francisco, CA About the role A San Francisco-based startup is looking for a Sr. frontend engineer to build and improve its digital platform. You'll create interactive user interfaces, set ...

New

Senior Front End Engineer

Ventura, CA · On-site +1

$174K - $249K/yr

Senior Front-End Engineer Location: 42 N. Chestnut St., Ventura, CA 93001 *Telecommuting permitted: work may be performed within normal commuting distance from The Trade Desk, Inc. office in Ventura ...

As a Senior Frontend Engineer, you will be instrumental in building intuitive, high-performance, and dependable web applications that empower our users to proactively detect and prevent risk. You ...

Senior Front-End Engineer

San Francisco, CA · On-site

$144K - $198K/yr

We are looking for a Senior Frontend Engineer to own the interfaces that our patients and medical providers rely on every single day. Mochi has already helped patients lose over 5 million pounds ...

Senior Frontend Engineer

San Mateo, CA · On-site

$139K - $191K/yr

Senior Frontend Engineer Primary: Bay Area (San Francisco / Peninsula) | Secondary: NYC The Opportunity We're doing an AI-first engineering rebuild for a company that already has an audience of 100M ...

Senior Front-End Engineer

San Francisco, CA

$144K - $198K/yr

We are looking for a Senior Frontend Engineer to own the interfaces that our patients and medical providers rely on every single day. Mochi has already helped patients lose over 5 million pounds ...

Showing results 21-40

Senior Frontend Engineer information

See California salary details

$70.6K

$144.8K

$195.4K

How much do senior frontend engineer jobs pay per year?

As of Aug 21, 2026, the average yearly pay for senior frontend engineer in California is $144,849.00, according to ZipRecruiter salary data. Most workers in this role earn between $120,900.00 and $166,300.00 per year, depending on experience, location, and employer.

What is a senior frontend engineer?

Senior Frontend Engineers are highly experienced software developers who specialize in building and maintaining the user-facing parts of web applications. They are responsible for translating design mockups into functional, interactive user interfaces using technologies like HTML, CSS, and JavaScript frameworks such as React or Angular. In addition to coding, they often mentor junior engineers, make architectural decisions, and ensure best practices for performance, accessibility, and maintainability. Their role is crucial in delivering seamless, responsive, and visually appealing digital experiences.

How does a senior frontend engineer typically collaborate with designers and backend developers?

As a Senior Frontend Engineer, you’ll work closely with UX/UI designers to translate visual concepts into interactive, responsive web interfaces. Regular communication with backend developers is essential to define API contracts, discuss data requirements, and ensure seamless integration between the frontend and backend. Collaboration often happens through agile ceremonies, design reviews, and code walkthroughs, fostering a team environment where feedback and shared ownership drive project success.

What are the key skills and qualifications needed to thrive as a senior frontend engineer, and why are they important?

To thrive as a Senior Frontend Engineer, you need advanced proficiency in JavaScript, HTML, CSS, and modern frontend frameworks such as React, Angular, or Vue, along with a bachelor's degree in computer science or related field. Familiarity with version control systems (like Git), build tools (Webpack, Babel), and testing frameworks (Jest, Cypress), as well as experience with RESTful APIs, are typically required. Strong problem-solving abilities, leadership, effective communication, and mentorship skills distinguish top performers in this role. These skills and qualities are crucial for building scalable, maintainable interfaces and for collaborating productively with cross-functional teams in dynamic development environments.

What is the difference between Senior Frontend Engineer vs Frontend Developer?

AspectSenior Frontend EngineerFrontend Developer
Required CredentialsBachelor's degree in CS or related field, experience with advanced JavaScript frameworksBachelor's degree or equivalent, basic knowledge of HTML, CSS, JavaScript
Work EnvironmentDesigning complex UI solutions, leading projects, mentoring juniorsImplementing UI features, coding, testing, collaborating with designers
Employer & Industry UsageTech companies, startups, agencies; roles often include leadershipWeb development firms, startups, freelance work; focus on implementation

Senior Frontend Engineers typically have more experience, handle complex projects, and mentor teams, whereas Frontend Developers focus on implementing UI features and coding. The senior role involves leadership and strategic planning, while the developer role emphasizes hands-on development.

What does a senior frontend engineer do?

A senior frontend engineer designs, develops, and maintains the user interface of web applications using technologies like HTML, CSS, and JavaScript frameworks such as React or Angular. They ensure the application's visual and interactive elements are functional, accessible, and optimized for performance, often mentoring junior developers and collaborating with designers and backend engineers.

What are the most commonly searched types of Frontend Engineer jobs in California?

The most popular types of Frontend Engineer jobs in California are:

What cities in California are hiring for Senior Frontend Engineer jobs?

Cities in California with the most Senior Frontend Engineer job openings:

Infographic showing various Senior Frontend Engineer job openings in California as of August 2026, with employment types broken down into 95% Full Time, 2% Part Time, and 3% Contract. Highlights an 85% Physical, 6% Hybrid, and 9% Remote job distribution, with an average salary of $144,849 per year, or $69.6 per hour.

Senior Frontend Engineer

Halliday

San Francisco, CA • On-site

$144K - $198K/yr

Full-time

Re-posted 3 days ago


Job description

Job Summary:
Halliday is a blockchain company and product lab focused on creating a unified payments ecosystem. They are seeking a Senior Frontend Engineer with expertise in React and TypeScript to build consumer-facing crypto and payments products, enhancing user experiences in blockchain transactions.
Responsibilities:
• Build User-Facing Products: Design and develop responsive, performant frontend applications using React and TypeScript that interact with blockchain networks, payment systems, and DeFi protocols while delivering an exceptional user experience.
• Develop Core Infrastructure: Build scalable components, design systems, and testing frameworks that support our payments platform and developer tools.
• Ship Developer Tools: Contribute to Halliday's public SDKs and APIs, making it easy for developers to integrate blockchain payments into their applications.
• Work Cross-Functionally: Collaborate with product, design, engineering, and partnerships teams to deliver features that solve real user problems and drive product adoption.
• Drive Technical Excellence: Identify and implement improvements to enhance performance, accessibility, security, and code quality across our frontend stack.
• Innovate on Web3 UX: Push the boundaries of what's possible in blockchain user experiences, making complex onchain actions feel simple and intuitive.
Qualifications:
Required:
• 2+ years of experience building production frontend applications with React and TypeScript.
• Strong understanding of modern frontend development including state management, API integration, responsive design, and performance optimization.
• You write clean, maintainable code and care deeply about user experience.
• You think beyond just implementing features, you understand the 'why' behind what you're building and advocate for the best user experience.
• You're excited to dive into new technologies, whether that's blockchain SDKs, payment APIs, or emerging web standards.
• You work well with cross-functional teams, communicate effectively, and thrive in a fast-paced startup environment.
• Based in or willing to relocate to the San Francisco Bay Area or New York City.
Preferred:
• Previous work with blockchain technologies such as EVM-based chains, Solana, or Bitcoin.
• Familiarity with Web3 libraries like ethers.js, viem, or wagmi.
• Experience building payment flows, checkout experiences, or financial products.
• Comfort working across the stack when needed, including APIs and backend services.
• Strong eye for design and experience working closely with designers to implement pixel-perfect interfaces.
• Active participation in open source projects or maintenance of public libraries.
Company:
Halliday is a workflow protocol designed to automate workflows and manage reliability across various systems. Founded in 2022, the company is headquartered in San Francisco, USA, with a team of 11-50 employees. The company is currently Early Stage.