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Javascript Backend Developer Jobs in Seattle, WA

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 ...

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

... 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 ...

New

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.

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 ...

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 ...

Tata Consultancy Service Limited

UI Developer

Seattle, WA · On-site

$95K - $125K/yr

Core java, CSS Experience: 7+ years Roles & Responsibilities JavaScript / ES6 Java server HTML CSS ... Work collaboratively with various backend systems in the Bank supplying data for various online ...

Walmart

Senior, Software Engineer - Web/OL

Bellevue, WA · On-site

$108K - $216K/yr

Leverage your strong hold on Node.js for server-side JavaScript, developing scalable backend ... Experience with cloud-native technologies (GCP/Azure) and DevOps practices. * General Skills:

Casne Engineering, Inc.

Be Seen First

Software Developer II

Bellevue, WA · Remote

$90K - $120K/yr

... with backend development Preferred / Nice-to-Have Skills * Jython - Familiarity * JavaScript ... SCADA Systems - Experience in designing, programming in, or developing integrations for SCADA ...

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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 Jul 18, 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.

Can I learn backend in 3 months?

A JavaScript Backend Developer can acquire foundational backend skills in about three months with focused study, including learning Node.js, databases, and APIs. However, becoming proficient and gaining job-ready experience typically requires ongoing practice and real-world project work beyond this timeframe.

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 is JavaScript salary?

The salary for a JavaScript Backend Developer varies based on experience, location, and company size, but typically ranges from $70,000 to $120,000 annually in many regions. Skilled developers with knowledge of frameworks like Node.js and experience with cloud services tend to earn higher salaries. Entry-level positions may start lower, while senior roles can exceed $150,000.

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.

Is JavaScript good for backend development?

JavaScript is widely used for backend development, especially with environments like Node.js, which allows developers to build scalable server-side applications using the same language as frontend development. It offers a large ecosystem of libraries and frameworks, making it a popular choice for full-stack developers and backend roles requiring proficiency in JavaScript. Knowledge of asynchronous programming and server management is beneficial for backend JavaScript development.

Are JavaScript developers in demand?

JavaScript developers are in high demand due to the widespread use of JavaScript for web development, both on the client and server sides with frameworks like Node.js. Companies seek developers skilled in JavaScript, front-end frameworks, and related tools to build dynamic, responsive applications, making it a valuable skill in the tech industry.
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Javascript Backend Developer jobs near you
Front End Developer

Front End Developer

The AES Group

Seattle, WA • Remote

$106K - $123K/yr

Contractor

Re-posted 19 days ago

Job description

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 is a premier technology consulting company that has been bringing businesses and talent together for over 20 years to deliver the most innovative technology solutions that create the most positive impact on society. AES has helped over 40 business enterprises, including Fortune 500 companies, engage their customers, empower their employees, and transform their business operations with the power of cloud, data, AI, and other emerging technologies.

About the Role:

We are seeking a highly skilled Front End Developer with strong experience in ReactJS, Angular and a solid understanding of Azure cloud services. The ideal candidate will be responsible for developing and optimizing user-facing applications, ensuring seamless integration with cloud-based backends, and delivering high-performance, scalable solutions.

This role requires expertise in modern front-end development, UI/UX best practices, and leveraging Azure services for cloud-based applications.

Key Responsibilities:

  • Develop and maintain responsive, high-performance web applications using Angular (latest version).
  • Solid experience in ReactJS
  • Design and implement scalable front-end architectures that integrate with Azure-based backends.
  • Work closely with UX/UI designers to create intuitive and visually appealing user interfaces.
  • Optimize application performance, ensuring fast load times and smooth user interactions.
  • Implement RESTful APIs, WebSockets, and GraphQL to communicate with back-end services.
  • Leverage Azure services such as Azure App Services, Azure Functions, API Management, and Azure DevOps for deployment and CI/CD automation.
  • Ensure cross-browser compatibility, accessibility, and mobile responsiveness.
  • Write clean, maintainable, and reusable code following best practices, design patterns, and coding standards.
  • Conduct code reviews, debugging, and performance optimizations to maintain high-quality codebases.
  • Stay up to date with Angular best practices, Azure cloud advancements, and emerging front-end technologies.
  • Collaborate with cross-functional teams, including back-end developers, cloud engineers, and DevOps teams to deliver seamless applications.

Qualifications:

  • Proficiency in ReactJS, Angular and related frameworks (RxJS, NgRx, or other state management solutions).
  • Strong experience with TypeScript, JavaScript (ES6+), HTML5, CSS3, and SCSS/SASS.
  • Hands-on experience with Azure cloud services, including Azure App Services, Azure Storage, Azure Functions, API Management, and Azure AD authentication.
  • Expertise in RESTful API integration, authentication mechanisms (OAuth, JWT), and security best practices.
  • Familiarity with Azure DevOps, CI/CD pipelines, and automated deployment strategies.
  • Knowledge of progressive web apps (PWA), server-side rendering (SSR) with Angular Universal, and front-end caching techniques.
  • Experience with containerized applications using Docker and Kubernetes on Azure (a plus).
  • Familiarity with Git, Agile methodologies, and Jira/Trello for project tracking.
  • Strong problem-solving and debugging skills with an analytical mindset.
  • Excellent communication skills, ability to collaborate in agile teams.

Preferred Skills:

  • Experience with Azure Logic Apps, Cognitive Services, or AI/ML integrations.
  • Knowledge of Headless CMS frameworks or Micro Frontends architecture.
  • Experience with testing frameworks like Jasmine, Karma, Jest, or Cypress.
  • Background in UI/UX design principles and usability best practices.

What we offer:

  • Competitive pay with a focus on your performance and outcomes
  • Professional growth opportunities that enable you to connect and collaborate with industry leaders and drive business value for some of the world's most innovative and forward-thinking companies
  • Open and collaborative environment where your contributions help shape The AES Group into something that works for you, not just a company you happen to work for

Let your future start with The AES Group and join our mission to create the most positive impact on society with the power of technology. Apply now