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

Apple

Senior End to End Performance Engineer

Seattle, WA

$175K - $308K/yr

Join the Apple Service Engineering (ASE) team and drive innovation that matters! The ASE team builds and provides systems and infrastructure that fuel Apple's services. As part of this team, you will ...

Salesforce, Inc.

Software Engineering SMTS

Seattle, WA

$139K - $183K/yr

The Experience We are looking for a Senior Member of Technical Staff (SMTS) to join the Experience Library team as a senior frontend-focused full-stack engineer. In this role, you will be a key ...

avante

Senior Software Engineer

Seattle, WA · On-site

$139K - $183K/yr

They are seeking a Senior Software Engineer to write production code, design scalable services, and ... Required : • Deep expertise in either backend or frontend engineering, with solid working ...

SpangleAI

Senior Fullstack Engineer

Bellevue, WA · On-site

$138K - $182K/yr

The Role We are seeking exceptional Senior Fullstack Engineers with deep expertise in client-side ... Frontend Engineering: Develop high-performance, scalable, and accessible web applications using ...

Summation

Senior Design Engineer

Bellevue, WA · On-site

$100 - $130/hr

The role Design Engineering at Summation lives at the intersection of product design and frontend engineering. As a Senior Design Engineer, you will ship beautiful, high-performance product ...

Axon

Frontend Senior Software Engineer I

Seattle, WA · On-site +1

$139K - $183K/yr

Your Impact As a Senior Software Engineer I on the Frontend Squad, you will collaborate with other engineers to shape and drive technical solutions and architecture for scalable, high-performance ...

AssemblyAI

Senior Design Engineer

Seattle, WA · On-site

$180K - $240K/yr

About the role: We're looking for a Senior Design Engineer to own the craft and feel of AssemblyAI ... This person should have a strong design background paired with real frontend engineering ability ...

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Senior Frontend Engineer information

See Renton, WA salary details

$80.4K

$165.1K

$222.7K

How much do senior frontend engineer jobs pay per year?

As of Aug 22, 2026, the average yearly pay for senior frontend engineer in Renton, WA is $165,092.00, according to ZipRecruiter salary data. Most workers in this role earn between $137,800.00 and $189,500.00 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 Renton, WA are hiring for Senior Frontend Engineer jobs?

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

Infographic showing various Senior Frontend Engineer job openings in Renton, WA as of August 2026, with employment types broken down into 91% Full Time, 4% Part Time, and 5% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $165,092 per year, or $79.4 per hour.

Senior Software Engineer, Online Ads Frontend

Microsoft

Redmond, WA • On-site

$160K - $261K/yr

Full-time

Posted 13 days ago

Microsoft rating

8.5

Company rating: 8.5 out of 10

Based on 132 frontline employees who took The Breakroom Quiz

79th of 245 rated software companies

Job description

Overview
Online Advertising is one of the fastest growing businesses on the Internet today, with about $70 billion of a $600 billion advertising market already online. Search engines, web publishers, major ad networks, and ad exchanges are now serving billions of ad impressions per day and generating terabytes of user events data every day. In the world of LLM with agent flourishing, we are a team of engineers, PMs and designers that is tasked to find and render the ads with most appealing layout, and contribute to the overall bing/MSAN revenue.
To help us achieve our ambitious goals to significantly grow the ads delivering and increase adoption of our MSAN platform, we are looking for a collaborative Senior Frontend Software Engineer to join our team. The role provides an exciting opportunity to contribute to ads UX and associated infrastructure for ads serving. If you are excited of joining an entrepreneurial and diverse team to respond to global demand and new scenario and deliver world class product, look no further!
Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.
Starting January 26, 2026, Microsoft AI (MAI) employees who live within a 50- mile commute of a designated Microsoft office in the U.S. or 25-mile commute of a non-U.S., country-specific location are expected to work from the office at least four days per week. This expectation is subject to local law and may vary by jurisdiction.
Responsibilities
  • To work with Design/PM/partner teams to come up the suitable UX design.
  • To build versatile rendering UX package/library on various platform.
  • To use data processing and monitoring system to analyze the system performance and drive the improvement on full ads stack.

Qualifications
Required Qualifications:
  • Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to C#, Java, JavaScript, or Python
    • OR equivalent experience.

Preferred Qualification:
  • 3+ years technical engineering experience with coding in JavasScript or TypeScript.
  • 3+ years experience building production UI with modern frameworks such React.js, WebComponents, Vue.js or Angular.
  • Master's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
    • OR Bachelor's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
    • OR equivalent experience.
  • Experience building, maintaining and debugging complex web applications across dev, staging, and production environments, including multi-region, multilingual, cross-platform, and multi-component systems.

#MicrosoftAI
Software Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $160,200 - $261,000 per year.
Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:
https://careers.microsoft.com/us/en/us-corporate-pay
This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.
Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.

What Microsoft employees say

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Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom

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About Microsoft

Sourced by ZipRecruiter

Our infrastructure is comprised of a large global portfolio of more than 100 datacenters and 1 million servers. Our foundation is built upon and managed by a team of subject matter experts working to support services for more than 1 billion customers and 20 million businesses in over 90 countries worldwide. With environmental sustainability and optimization at the forefront of our datacenter design and operations, we continue to grow and evolve as we meet the ever-changing business demands that hold Microsoft as a world-class cloud provider.

Industry

Computer and computer peripheral equipment and software wholesalers

Company size

10,000+ Employees

Headquarters location

Redmond, WA, US

Year founded

1975

Social media

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