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Javascript Backend Developer Jobs in Seattle, WA

Vy Systems

Full Stack UI Developer

Redmond, WA · On-site

Full Stack / UI Developer is responsible for building scalable web applications with a focus on ... JavaScript (ES6+) and frontend fundamentals (HTML, CSS) REST API integration Basic backend ...

Vish Consulting IT

React Native Developer

Seattle, WA · On-site

The ideal candidate has strong experience in JavaScript/TypeScript, understands mobile UI/UX ... Work closely with product managers, designers, and backend teams to deliver features end‑to‑end.

The AES Group

Front End Developer

Seattle, WA · Remote

$106K - $123K/yr

Implement RESTful APIs, WebSockets, and GraphQL to communicate with back-end services. * Leverage ... Strong experience with TypeScript, JavaScript (ES6+), HTML5, CSS3, and SCSS/SASS. * Hands-on ...

RIT Solutions, Inc.

SAP ABAP/UI Developer

Seattle, WA · On-site

$70 - $94.75/hr

... back-end systems. • Configure and develop SAP UI5/Fiori applications, including Fiori Elements and UI5-related programming (JavaScript, HTML5, CSS). • Build and debug OData services, CDS data ...

iFlow Inc

Frontend Developer-React

Redmond, WA · On-site

$116K - $135K/yr

Responsibilities Develop and maintain front-end features using React, TypeScript, JavaScript, HTML ... Integrate UI components with backend services and REST APIs. Implement privacy, cookie, and user ...

krg technology inc

WEb developer

Redmond, WA · On-site

... backend capabilities including WebAPIs and personalization support 5. Closely working with the ... NET Framework 9. 3+ years of experience with HTML5, JavaScript, and CSS/LESS 10. 2+ years of ...

PROLIM Global Corporation

React developer

Seattle, WA · On-site

Expertise in Node.js with Express.js or similar backend frameworks. Solid experience with ... Strong understanding of JavaScript/TypeScript and ES6 features. Experience building and consuming ...

Microsoft

Senior Software Engineer

Redmond, WA · On-site

$160K - $261K/yr

Designs, implements, debugs, refactors, and optimizes backend services, APIs, and distributed ... Full-stack development experience with modern frontend on Web & Mobile such as JavaScript ...

Anduril Industries

UI Engineer, Lattice C2

Seattle, WA · On-site

$118K - $158K/yr

Experience building production web applications in JavaScript or TypeScript (we use TypeScript, React, and RxJS) * Proficiency with modern backend programming languages such as C++, Rust, or Golang.

Staffingine LLC

NET Full Stack Developer

Bellevue, WA · On-site

Web UI Development with Angular functional web interfaces custom HTML CSS JavaScript and ... Backend development and REST API designs Preferred Qualifications * Experience developing in Azure ...

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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.

Azure Fullstack developer at Redmond

smart folks inc

Redmond, WA • On-site

Full-time

Re-posted 8 days ago

Job description

Full Stack Developer – Digital Workspace Solutions (DWS)
Location : Redmond, WA (Onsite)
Full Time Position 

Key Responsibilities:

  • Develop, optimize, and maintain user interfaces for the Space Management App using React and NextJS, ensuring a seamless and intuitive user experience.
  • Design and implement reusable components, templates, and services, adhering to best practices in performance and state management.
  • Collaborate with the back-end development team to integrate APIs and ensure smooth data exchange.
  • Utilize modern tools and frameworks, such as HTML5, CSS3, Bootstrap, and TypeScript/JavaScript, to deliver high-quality, responsive designs.
  • Configure and manage routing mechanisms for efficient navigation across the application.
  • Implement CI/CD pipelines and deployments using Azure DevOps, ensuring robust and scalable solutions.
  • Leverage Azure PaaS services like Azure Web Apps, Functions, Storage, Service Bus, Azure SQL, and AKS to build and deploy application components.
  • Work independently within a Scrum team to handle tasks from design to deployment and verification in pre-production environments.
  • Maintain and enhance the application’s performance, ensuring adherence to coding standards and best practices.
  • Effectively communicate ideas and collaborate with cross-functional teams to achieve project objectives.

Required Skills and Qualifications:

Front-End Development:

  • Proficient in React, NextJS, HTML5, CSS3, Bootstrap, and TypeScript/JavaScript.
  • Hands-on experience with component creation, lifecycle management, and templates.
  • Expertise in creating services, injecting services into components, and configuring routing mechanisms.
  • Strong understanding of state management, performance optimization, and reusable component design.
  • Experience calling backend APIs and integrating with stateful components.

Back-End Development:

  • Proficient in .Net & C# with 3+ years of experience.
  • Hands-on development with Azure Services, including Azure Functions, Service Bus, Web Apps, SQL, and AKS (minimum 2 years in the last 3 years).

DevOps & Orchestration:

  • Experience with Azure DevOps tools, including Repos, Boards, and CI/CD pipelines.

Agile Practices:

  • Experience working in a Scrum team environment and utilizing ADO.
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About Smart Folks

Sourced by ZipRecruiter

Smart Folks Inc. (SFI) is a global IT Staff Augmentation and Consulting Services that discovers handpicked smart talent and routes them to the right path. Smart Folks Inc. was founded in 2011 and is headquartered in McKinney, Texas. We have global operations with localized detail to meet the high caliber needs of our clients.

Industry

It services

Company size

11 - 50 Employees

Headquarters location

McKinney, TX, US

Year founded

2011

Social media

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