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Senior Javascript Developer Jobs in Seattle, WA (NOW HIRING)

Belva.ai

Senior React Developer

Bellevue, WA · Remote

$125K - $150K/yr

We are seeking a talented and experienced Senior React Developer to join our team. We're a ... JavaScript, TypeScript, and related technologies. - Excellent problem-solving skills and the ...

Dellfor Technologies

senior .net developer

Redmond, WA · On-site

$61.50 - $78.50/hr

... for a Senior .Net developer with minimum 8 years of industry experience in the following ... Strong JavaScript skills and experience utilizing frontend UI frameworks (bootstrap, Angular JS ...

DevSelect

Front End Designer/Developer

Redmond, WA · On-site

$116K - $135K/yr

Any of the following Vanilla JavaScript, Interaction / Animation, ReactJS, MongoDB, PWA, Building ... Currently we're looking for highly passionate senior-level front-end / user experience engineers ...

Protingent

Senior Software Engineer

Bellevue, WA · On-site

$77.14 - $130.87/hr

Senior Software Engineer Protingent Staffing has an exciting contract Senior Software Engineer ... Advanced programming skills in Python and JavaScript. * 3+ years in‑depth experience with Django ...

Microsoft

Senior Service Engineer

Redmond, WA · On-site

$137K - $180K/yr

... Java, JavaScript, or Python * OR equivalent experience. Other Requirements: Ability to meet ... Azure (cloud-native services, DevOps, monitoring). * Experience designing and operating distributed ...

SAP

Senior Developer

Bellevue, WA · On-site

$140K - $239K/yr

Senior Developer Location: Bellevue, WA Work Model: Hybrid work model Purpose and Objective: Concur ... Typescript and Javascript; and * CSS, Node, or GraphQL. Travel: N/A. This position is eligible for ...

SAP SuccessFactors

Senior Developer

Bellevue, WA

$140K - $239K/yr

Senior Developer Location: Bellevue, WA Work Model: Hybrid work model Purpose and Objective: Concur ... Typescript and Javascript; and * CSS, Node, or GraphQL. Travel: N/A. This position is eligible for ...

Microsoft

Senior Software Engineer

Redmond, WA · On-site

$160K - $261K/yr

As a Senior Software Engineer, you will design and implement client applications, cloud services ... Full-stack development experience with modern frontend on Web & Mobile such as JavaScript ...

Microsoft

Senior Software Engineer

Redmond, WA · On-site

$137K - $180K/yr

As a Senior Software Engineer on the Copilot evaluation team, you will be a key engineer on a ... Net, Java, JavaScript, Rust or Python * OR equivalent experience. Other Requirements: Ability to ...

ClifyX

Senior Engineer, AI Data Management

Seattle, WA · On-site

$120K - $163K/yr

ClifyX is a company focused on innovative technology solutions, and they are seeking a Senior ... DevOps Continuous Integration and Continuous Delivery (CI/CD) • Docker • ReactJS • JavaScript ...

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All JobsJavascript Developer JobsSenior Javascript Developer JobsSenior Javascript Developer Jobs in Seattle, WA

Senior Javascript Developer information

See Seattle, WA salary details

$35

$68

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How much do senior javascript developer jobs pay per hour?

As of Aug 10, 2026, the average hourly pay for senior javascript developer in Seattle, WA is $68.74, according to ZipRecruiter salary data. Most workers in this role earn between $61.54 and $78.22 per hour, depending on experience, location, and employer.

What is a senior JavaScript developer?

A Senior JavaScript Developer is a highly experienced programmer specializing in JavaScript, including frameworks like React, Angular, or Node.js. They are responsible for designing, developing, and optimizing web applications, ensuring high performance and maintainability. Additionally, they provide technical leadership, mentor junior developers, and collaborate with cross-functional teams to deliver scalable solutions. Strong problem-solving skills, deep knowledge of JavaScript best practices, and experience with modern development tools are essential for this role.

What are typical challenges faced by senior JavaScript developers in day-to-day work?

Senior Javascript Developers often encounter complex challenges such as optimizing web application performance, ensuring code scalability and maintainability, and integrating with diverse APIs and services. They are also expected to troubleshoot legacy code and address security vulnerabilities, all while keeping up with the rapidly evolving JavaScript ecosystem. Collaborating with designers, product managers, and junior developers can add layers of complexity to project requirements. However, overcoming these challenges is rewarding and provides opportunities to shape technical strategy and influence best practices within the team.

What are the key skills and qualifications needed to thrive as a senior JavaScript developer?

To thrive as a Senior Javascript Developer, a strong command of JavaScript (including ES6+), advanced front-end frameworks (like React, Angular, or Vue), and back-end technologies (such as Node.js) are essential, along with several years of professional coding experience. Familiarity with version control systems (like Git), CI/CD pipelines, and relevant certifications (e.g., AWS Certified Developer or JavaScript certifications) is highly valued. Excellent problem-solving abilities, mentorship skills, and effective communication help developers collaborate and lead within cross-functional teams. These skills enable Senior Javascript Developers to build robust applications, guide junior team members, and drive innovation in fast-paced tech environments.

What are the most commonly searched types of Javascript Developer jobs in Seattle, WA? The most popular types of Javascript Developer jobs in Seattle, WA are:
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Senior Javascript Developer jobs near you
Infographic showing various Senior Javascript Developer job openings in Seattle, WA as of August 2026, with employment types broken down into 80% Full Time, 5% Part Time, and 15% Contract. Highlights an 83% Physical, 5% Hybrid, and 12% Remote job distribution, with an average salary of $142,984 per year, or $68.7 per hour.

Senior React Developer

Belva.ai

Bellevue, WA • Remote

$125K - $150K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 8 days ago

Job description

We are looking for exceedingly passionate, capable, and hardworking individuals who want to help shape the future of our industry. If you are looking for an environment that is more of a standard “clock-in and clock-out” role, please do not apply. 
 
 

About Us: 

We are seeking a talented and experienced Senior React Developer to join our team. We’re a trailblazing A.I. company, searching for an individual who can lead the charge in developing web applications that make an impact on our industry. 

Role and Responsibilities: 

Our Senior React Developers will be asked to help with building performant web apps on all major browsers. They will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. 

As the Senior React Developer, you will have the chance to: 

- Lead the development of web apps on all major browsers using React. 

- Play a pivotal role in shaping the organization's web app offerings and influencing its technological direction. 

- Collaborate with cross-functional teams to ensure seamless integration and exceptional user experiences. 

- Contribute to the growth and mentorship of junior developers and potentially lead project teams. 

- Drive innovation and excellence in web app development through your expertise. 

- Maintain code and write automated tests to ensure the product is of the highest quality. 

- Participate in Agile routines and ceremonies; daily standups, sprint planning, and sprint demos. 

- Work with other teams (i.e., PM, etc.) to ensure delivered code meets specifications based on functional/technical specifications. 

- Create unit and integration tests to fully test and regress software. Break down complex requirements into independent coding tasks and strategies. 

Qualifications and Experience: 

- Must be a Citizen or Green Card Holder and live in the United States. 

- B.S in Computer Science or equivalent experience. 

- 5+ years of development using React for enterprise-level web applications. 

- 5+ years of experience with web sockets in real-time communication applications. 

- Proven track record of successfully launching and maintaining web applications. 

- Strong proficiency in JavaScript, TypeScript, and related technologies. 

- Excellent problem-solving skills and the ability to tackle complex challenges. 

- Prior experience in leadership or mentorship roles is a plus. 

- Strong verbal and written communication skills. 

- Openness to new ideas and an unceasing desire to learn new things. 

Desired Experience: 

- Experience with TDD or BDD. 

- Experience working with cloud-native, scalable, and highly available distributed systems. 

- Experience with Atlassian tools: JIRA, Confluence, etc. 

Why Join Us: 

- Cutting-edge Technology: Become a key player in a pioneering A.I. Communications company. 

- Meaningful Impact: Contribute to the creation of accessible and flexible A.I. solutions that empower customers and businesses. 

- Professional Growth: Embrace challenging projects that expand your skill set, foster continuous learning, and elevate your career trajectory. 

We eagerly anticipate the chance to discuss how your expertise can contribute to our team's success and make a lasting difference. We look forward to the possibility of working together. 

Experience level: 

- 7 years 

Schedule: 

- 8-hour shift 

- Monday to Friday 

- Remote Schedule 

Experience: 

- React: 5 years (Required) 

- Web Sockets: 5 years (Required) 

- Software development: 7 years (Required) 

- Front-end architecture: 3 years (Required) 

Work Location: Remote (Company HQ in Bellevue, WA) 

Company Description

AI telecommunications