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Javascript Backend Developer Jobs in Seattle, WA

PamTen Inc

React Developer

Bellevue, WA · On-site

$116K - $135K/yr

React, JavaScript, TypeScript • Strong experience with: Micro Frontends (single-spa, Module ... Backend exposure: Node.js, Express.js • Testing frameworks: Playwright, Cypress, Jest • UI ...

Microsoft

Software Engineer II

Redmond, WA · On-site

Responsibilities : • In this role, you'll design, build, and operate distributed backend services ... JavaScript, or Python OR equivalent experience. • Ability to meet Microsoft, customer and/or ...

Centraprise

.Net Full Stack Developer

Seattle, WA · On-site

Role: " .Net Full Stack Developer" / ".NET Technical Lead" Location: Seattle, WA / Plano, TX ... NET on the backend and modern JavaScript frameworks on the frontend. • Build and consume REST ...

Tata Consultancy Service Limited

Developer

Bellevue, WA · On-site

$68K - $100K/yr

... JavaScript/TypeScript - Experience with back-end technologies like Python (preferred) as well as ... stack engineer with experience building and scaling web applications. - Design, develop, and ...

Programmers.io

Full Stack Engineer

Seattle, WA · On-site

We are seeking a highly skilled Full Stack Developer with strong Data Engineering experience and ... Proficiency in Python for backend development is required. Key Responsibilities: · Design, develop ...

Gradial

Product Engineer (UX/UI)

Seattle, WA · On-site

... CSS, JavaScript/TypeScript, React) to validate concepts, test usability, and iterate on design ... backend engineers in defining APIs and data structures that enable cohesive and seamless user ...

K2 Space

Senior Ground Software Engineer

Seattle, WA

$150K - $200K/yr

Experience with Rust or another statically-typed backend programming language (Go, C++, Java, C#, TypeScript) * Experience with JavaScript/TypeScript and modern frontend development tooling (Vue ...

Pivotal Consulting

UI Front-End Developer

Redmond, WA

$60 - $70/hr

Collaborate with security engineers, backend developers, and product teams to deliver end-to-end ... Strong proficiency in React, TypeScript, JavaScript (ES6+), HTML5, and CSS3 * Solid understanding ...

Pivotal Consulting

UI Front-End Developer

Redmond, WA · On-site +1

$60 - $70/hr

Collaborate with security engineers, backend developers, and product teams to deliver end-to-end ... Strong proficiency in React, TypeScript, JavaScript (ES6+), HTML5, and CSS3 * Solid understanding ...

Merican

Sr Full Stack Java Developer

Bellevue, WA · On-site

$59.25 - $76.50/hr

In addition to backend services, this role designs and builds responsive, accessible, and ... Strong experience with JavaScript/TypeScript and React for building production user interfaces

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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

SAP BTP Developer CAP UI5

Futran Tech Solutions Pvt. Ltd.

Bellevue, WA • On-site

Full-time

Re-posted 15 days ago

Job description

Position: SAP BTP Developer CAP UI5
Location: Bellevue - Washington
Position Type: Contract
SAP BTP Developer (CAP & UI5)
Key Responsibilities
  • Full-Stack Application Delivery: Architect and develop end-to-end cloud-native applications on SAP BTP, using the Cloud Application Programming (CAP) Model (Node.js or Java) for scalable backend services and SAPUI5/Fiori for intuitive frontends.
  • Domain-Driven Data Modelling: Design complex data models and service definitions using Core Data Services (CDS), ensuring seamless persistence in SAP HANA Cloud and efficient OData (V2/V4) service exposure.
  • Metadata-Driven UI Development: Build responsive user interfaces using Fiori Elements for standardized layouts and Freestyle UI5 for highly customized business requirements, ensuring a consistent and high-performance user experience.
  • Secure Cloud Integration: Implement enterprise-grade security using XSUAA (Identity & Access Management) and integrate services with SAP S/4HANA or third-party platforms via BTP Destinations, Connectivity, and Event Mesh.
  • Modern DevOps & Optimization: Manage the full application lifecycle using SAP Business Application Studio (BAS), Git-based version control, and CI/CD pipelines, while continuously optimizing code for performance and scalability.
  • Assist in designing, developing, testing, and deploying SAP UI5 apps on SAP BTP.
  • Contribute to backend service development using SAP RAP and ABAP RESTful programming.
  • Collaborate with business analysts, senior developers, and other stakeholders to translate requirements into technical solutions.
  • Participate in code reviews, quality assurance, and adherence to best development practices.
  • Support integration of SAP UI5 apps with SAP S/4HANA and other systems via OData and APIs.
  • Prepare and maintain technical documentation for developed applications.
  • Stay up-to-date with advancements in SAP BTP, UI5, and RAP technologies.

Job Requirements
  • Hands-on experience in SAP UI5, SAP RAP, ABAP, or relevant technical development roles.
  • Good knowledge of fundamental programming concepts (ABAP, RAP, CAP, UI5, JavaScript, HTML5, CSS).
  • Basic understanding of REST APIs, OData services, and full stack development lifecycle.
  • SAP certification in UI5, ABAP, RAP, or BTP are highly preferred.

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