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Senior Frontend Engineer Jobs in Bothell, WA (NOW HIRING)

AIM

Frontend Developer

Redmond, WA · On-site

$116K - $135K/yr

Responsibilities : • As a Senior Software Engineer with a UI focus, you will design and build the ... modern frontend engineering principles. • Drive improvements in code quality, accessibility ...

Amazon

Front-End Engineer, Kiro

Seattle, WA · On-site

You will work alongside exceptional senior engineering talent solving hard problems at the frontier of AI and developer tooling. You'll have opportunities to work with and learn from best-in-industry ...

Amazon

Front-End Engineer, Kiro

Seattle, WA · On-site

You will work alongside exceptional senior engineering talent solving hard problems at the frontier ... BASIC QUALIFICATIONS - 2+ years of non-internship professional front end, web or mobile software ...

Amazon

Front-End Engineer, Kiro

Seattle, WA · On-site

You will work alongside exceptional senior engineering talent solving hard problems at the frontier of AI and developer tooling. You'll have opportunities to work with and learn from best-in-industry ...

Hive

Senior Software Engineer - Frontend

Seattle, WA · On-site

$160K - $250K/yr

About the Role Frontend Engineers are an essential part of the Hive Data and Hive Enterprise products. Working closely with designers, product owners, and other engineers, we implement the user ...

Hive

Senior Software Engineer - Frontend

Seattle, WA · On-site

$160K - $250K/yr

About the Role Frontend Engineers are an essential part of the Hive Data and Hive Enterprise products. Working closely with designers, product owners, and other engineers, we implement the user ...

Chewy

Senior Software Engineer - Front - End

Bellevue, WA · On-site

$136K - $225K/yr

Chewy is hiring a Senior Software Front End Engineer to work on Chewy's Discovery Experience team in Bellevue, WA. The Discovery Experience team is responsible for a key segment of the customer ...

Chewy

Senior Software Engineer - Front - End

Bellevue, WA · On-site +1

$136K - $225K/yr

Chewy is hiring a Senior Software Front End Engineer to work on Chewy's Discovery Experience team in Bellevue, WA. The Discovery Experience team is responsible for a key segment of the customer ...

The AES Group

Front End Developer

Seattle, WA · Remote

$106K - $123K/yr

Position Title: Front End Developer Location: Remote - USA Experience Level ... Senior-Level Let's create our future together at The AES Group! About The AES Group: The AES Group ...

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Showing results 21-40

All JobsFrontend Engineer JobsSenior Frontend Engineer JobsSenior Frontend Engineer Jobs in Bothell, WA

Senior Frontend Engineer information

See Bothell, WA salary details

$79.9K

$164.1K

$221.3K

How much do senior frontend engineer jobs pay per year?

As of Aug 22, 2026, the average yearly pay for senior frontend engineer in Bothell, WA is $164,073.00, according to ZipRecruiter salary data. Most workers in this role earn between $136,900.00 and $188,400.00 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 cities near Bothell, WA are hiring for Senior Frontend Engineer jobs?

Cities near Bothell, WA with the most Senior Frontend Engineer job openings:

Infographic showing various Senior Frontend Engineer job openings in Bothell, WA as of August 2026, with employment types broken down into 90% Full Time, 4% Part Time, and 6% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $164,073 per year, or $78.9 per hour.

Frontend Developer

AIM

Redmond, WA • On-site

$116K - $135K/yr

Full-time

Re-posted 20 days ago

Job description

Job Summary:
AIM is transforming heavy machinery into AI-powered fleets, enhancing safety and performance in challenging environments. They are seeking a Senior Frontend Developer to design and build user interfaces that integrate human operators with autonomous systems, focusing on accessibility and performance.
Responsibilities:
• As a Senior Software Engineer with a UI focus, you will design and build the two web surfaces that put a human in the loop with AIM's autonomous fleet: the safety-critical Operator UI and the multi-tenant portal — and the shared design system that powers both.
• Set the architectural direction for component APIs, accessibility, theming, versioning, deprecation paths, and migration tooling.
• Own the developer experience of every engineer at AIM who builds on top of the design system.
• Drive the patterns that make it easy to ship high-quality, accessible UI by default.
• Architect and implement the live 3D scene with Three.js / React Three Fiber / Drei — point clouds, terrain meshes with BVH acceleration, geofence editing, cut/fill visualization, machine overlays.
• Design state machines (XState), validation, and observability for safety-critical UI flows.
• Build teleop controls and integrate live video streaming with the rigor those interfaces demand.
• Drive the architecture for multi-tenant authorization, internationalization (including RTL), and real-time data.
• Design customer-facing experiences that hold up to the standards of best-in-class B2B software.
• Write clean, testable, maintainable TypeScript using modern frontend engineering principles.
• Drive improvements in code quality, accessibility, performance, reliability, and observability.
• Lead code reviews, design reviews, and architectural discussions.
• Work with TPMs, design, autonomy, controls, hardware, and field ops to ensure your UI works reliably on real machines and at real customer sites.
• Partner with FDEs to understand field realities — sun glare, gloves, dropped networks — and incorporate operational truth back into the codebase.
• Drive root-cause analysis and elimination of recurring defects.
• Mentor junior and mid-level engineers.
• Improve developer experience, CI/CD, test frameworks (Vitest, Cypress, Testing Library, vitest-axe, MSW), and local development tooling.
• Help define SWE excellence and engineering mechanisms across the org.
Qualifications:
Required:
• Bachelor's degree in Computer Science, Computer Engineering, Design, HCI, or equivalent hands-on experience.
• 5+ years of professional software engineering experience delivering production frontend systems.
• Deep expertise in TypeScript and React, including modern patterns (hooks, suspense, concurrent rendering).
• Experience with 3D web graphics: Three.js, React Three Fiber, Drei, WebGL, shaders, GLTF pipelines, BVH acceleration, or point-cloud rendering.
• Experience with real-time data and binary serialization: Protocol Buffers, gRPC-web, WebSockets, or high-frequency telemetry on the web.
• Experience with modern frontend tooling: Vite, npm workspaces (or pnpm/yarn workspaces), Storybook, modern testing stacks.
• Strong debugging skills using browser devtools, logs, telemetry, metrics, and tracing.
• Proven track record of delivering high-quality software independently and as part of cross-functional teams.
Preferred:
• Comfort working across the whole stack when needed.
• Experience with safety-critical or industrial UI: robotics, automotive, aerospace, medical, defense, energy — contexts where a bug has physical consequences.
• Experience with state machines (XState, statecharts) as a tool for safe UI flows, not as a buzzword.
• Experience with TanStack Router, TanStack Query, Zustand, Tailwind CSS v4, tailwind-variants, Floating UI, Mantine, or Visx.
• Experience with multi-tenant SaaS authorization (ReBAC/ABAC) and the UI patterns that make complex permissions comprehensible.
• Experience with frontend infrastructure: Docker, Kubernetes, CI/CD, micro-frontend architecture, OpenTelemetry, Sentry.
Company:
Scalable earthmoving is not optional. It’s required for our civilization to flourish. Founded in 2021, the company is headquartered in Bellevue, USA, with a team of 51-200 employees. The company is currently Growth Stage.

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