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Javascript Backend Developer Jobs in Seattle, WA

Clera

Backend Software Engineer

Seattle, WA · On-site

$100K - $150K/yr

Collaborate with international teammates and contribute to DevOps efforts as needed. What We're ... Experience with JavaScript ES6+ testing frameworks (e.g., Mocha, Chai, Sinon). * Exposure to ...

New

Clera

Backend Software Engineer

Seattle, WA · Remote

$100K - $150K/yr

Collaborate with international teammates and contribute to DevOps efforts as needed. What We're ... Experience with JavaScript ES6+ testing frameworks (e.g., Mocha, Chai, Sinon). * Exposure to ...

New

Jobsbridge

Java Backend Developer

Redmond, WA

$56.50 - $73.25/hr

... with HTML, CSS, Javascript, XML and other related technologies Experience working on Database - MySQL, Oracle or Mongo etc Ability to communicate effectively orally and through writing.

Clerkie

Backend Engineer

Seattle, WA · Remote

$90/hr

At Clerkie, engineers operate with a high degree of ownership and autonomy. You'll collaborate ... Proficiency in JavaScript / Node.js (or similar backend languages) * Experience working with ...

Info Way Solutions

React developer

Seattle, WA · On-site

$57 - $74/hr

... backend engineers • Feature testing • Lead front-end architecture decisions and contribute to ... JavaScript (ES6+), HTML5, CSS3 • Experience with modern React features: Hooks, Context ...

SpangleAI

Senior Fullstack Engineer

Bellevue, WA · On-site

... to backend systems. Responsibilities : • Design and implement reusable, distributed JavaScript ... DevOps practices • Strong understanding of frontend performance optimization and rendering ...

SpangleAI

Senior Fullstack Engineer

Bellevue, WA · On-site

$138K - $182K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

You will also contribute strategically to backend systems, including data modeling, infrastructure ... Design and implement reusable, distributed JavaScript/CSS SDK frameworks that enable seamless ...

Softpath

Fullstack UI Developer

Redmond, WA · On-site

Fullstack UI developer Onsite in Redmond, WA Fulltime position Job Summary: Full Stack / UI ... JavaScript (ES6+) and frontend fundamentals (HTML, CSS) * REST API integration * Basic backend ...

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All JobsJavascript Backend Developer JobsJavascript Backend Developer Jobs in Seattle, WA

Javascript Backend Developer information

See Seattle, WA salary details

$13

$65

$96

How much do javascript backend developer jobs pay per hour?

As of Aug 14, 2026, the average hourly pay for javascript backend developer in Seattle, WA is $65.70, according to ZipRecruiter salary data. Most workers in this role earn between $53.89 and $77.69 per hour, depending on experience, location, and employer.

What does a JavaScript backend developer do?

A JavaScript Backend Developer is responsible for building and maintaining the server-side logic, databases, and APIs that power web applications. They use JavaScript, often with frameworks like Node.js, to process requests, manage data, and ensure smooth communication between the frontend and backend of an application. Their work ensures that web applications are scalable, secure, and efficient. JavaScript Backend Developers also collaborate with frontend developers and other team members to deliver seamless user experiences.

What are the key skills and qualifications needed to thrive as a JavaScript backend developer, and why are they important?

To thrive as a Javascript Backend Developer, you need strong proficiency in JavaScript (especially Node.js), knowledge of backend frameworks, and a solid understanding of databases such as MongoDB or PostgreSQL. Familiarity with development tools like Git, RESTful APIs, Docker, and cloud platforms, as well as relevant certifications, is highly valuable. Excellent problem-solving, teamwork, and communication skills help you collaborate effectively and deliver robust solutions. These abilities are crucial for building scalable, secure, and maintainable backend services that power modern applications.

What are the typical challenges a JavaScript backend developer faces when scaling applications for high traffic?

JavaScript Backend Developers, especially those working with Node.js, often encounter challenges related to handling high concurrency, optimizing database queries, and maintaining application performance under heavy load. Ensuring efficient memory management and implementing robust error handling are also critical when scaling. Working closely with DevOps and frontend teams to optimize APIs and monitor system health is essential for delivering reliable, scalable backend solutions.

What is the difference between Javascript Backend Developer vs Javascript Frontend Developer?

AspectJavascript Backend DeveloperJavascript Frontend Developer
Primary FocusServer-side development, APIs, databasesUser interface, client-side interactions
Required SkillsNode.js, databases, server managementHTML, CSS, JavaScript, UI frameworks
Work EnvironmentBack-end servers, cloud platformsWeb browsers, client devices
Common UsageBuilding APIs, server logicDesigning web pages, user experience

The main difference between a Javascript Backend Developer and a Javascript Frontend Developer lies in their focus areas. Backend developers handle server-side logic, databases, and APIs, while frontend developers focus on creating engaging user interfaces and client-side interactions. Both roles require JavaScript skills but apply them in different parts of web development projects.

What are popular job titles related to Javascript Backend Developer jobs in Seattle, WA?

For Javascript Backend Developer jobs in Seattle, WA, the most frequently searched job titles are:

What job categories do people searching Javascript Backend Developer jobs in Seattle, WA look for?

The top searched job categories for Javascript Backend Developer jobs in Seattle, WA are:

Javascript Backend Developer jobs near you
Infographic showing various Javascript Backend Developer job openings in Seattle, WA as of June 2026, with employment types broken down into 96% Full Time, 2% Part Time, and 2% Contract. Highlights an 78% Physical, 4% Hybrid, and 18% Remote job distribution, with an average salary of $136,661 per year, or $65.7 per hour.

Java Front end and Back end developer

krg technology inc

Bellevue, WA • On-site

Full-time

Re-posted 14 days ago

Job description

Company Description

Thendral

Email : thendral (at) krgtech (dot) com

661 367 8000 * 609

Job Description

Position 1: Backend Developer

  • Experience/Strong knowledge in framework (Spring or Hibernate).
  • Experience/Strong knowledge in Restful API.

Position 2: Front End Developer

  • Experience/Knowledge in HTML, CSS, JavaScript

Additional Information

Locals to Washington who can go for a inperson interview on Oct 22@ Redmond,WA - HCL Office

KRG Technologies logo

About KRG Technologies

Sourced by ZipRecruiter

KRG Technologies was founded with a simple motive of offering the clients exactly what they want, how they want and when they want. By leveraging for its clients its technological edge and right-sourcing advantage, KRG in a short period of time has grown to become one of the most trusted strategic technology partners. Treating every client as the top priority, we customize our solutions and services to align with the unique needs of each client. Headquartered in Valencia, California, KRG employs a unique global delivery platform to minister its offerings spanning from application development and maintenance to business process reengineering. With years of hands-on domain experience and international presence, we offer state-of-the-art solutions backed by our follow-the-sun service model in the most cost effective manner. We value our clientele for the trust reposed in us and our clientele admire us for our personalized approach and deep commitment to their success. Our biggest strength lies in technical expertise of our team and individual competency of our employees, which enables us to be the most befitting solution provider.

Industry

It services

Company size

201 - 500 Employees

Headquarters location

Valencia, CA, US

Year founded

2003

Social media

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