Top Web Developer Jobs in Seattle, WA

Build and operate large-scale distributed web crawlers that discover, fetch, extract, deduplicate, and recrawl billions of pages. Develop targeted pipelines for audio, video, and multilingual data, transforming web content into training-ready datasets. Create infrastructure and tooling for researchers to request, monitor, evaluate, and explore crawled data, while ensuring reliability, efficiency, compliance, politeness, and rate-limit handling.

Build and operate accessible, high-performance member-facing web applications using a front-end-first full-stack approach. Contribute to APIs, backend services, data flows, integrations, frontend architecture, testing, observability, and performance improvements. Own projects from concept through production, collaborate with Product, Design, Data, and Clinical teams, improve developer experience, support AI-assisted coding practices, participate in technical reviews and incident follow-up, and mentor engineers.

Serve as the senior software development SME while performing full-stack Java web development and O&M activities. Guide developer teams, prioritize work, coordinate technical meetings, resolve issues, optimize processes, analyze requirements, estimate effort, review code, conduct testing, troubleshoot environments, create technical documentation, and implement software updates. The role requires extensive J2EE experience, SPA development, DevOps and CI/CD expertise, and active Public Trust/MBI clearance supporting an IRS Criminal Investigation system.

Design, build, test, and maintain scalable web applications. Create responsive UIs with Angular or React (TypeScript), implement Python/Flask backends and RESTful APIs, design relational schemas, troubleshoot production issues, perform code reviews, and mentor junior developers.

Design, develop, and maintain front-end and back-end features for Node/Angular web applications on cloud platforms. Contribute to architecture, production management, DevOps, troubleshooting, and cloud infrastructure deployment and support.

The Web Developer is responsible for designing, developing, debugging, and modifying software applications, providing solutions, and supporting documentation.

The Ruby Engineer will focus on web scraping and browser automation, fix code issues promptly, support customers, and enhance search engine integrations.

The Product Engineer II identifies requirements for web services, manages product backlogs, evaluates service usage, and communicates development plans, cooperating with stakeholders and product management.

The Senior Product Engineer will oversee the development of ArcGIS web services, ensuring reliability and scalability while balancing customer needs and product goals.

The role involves leading the development of a high-performance Web SDK for fraud detection and risk management, implementing algorithms for device fingerprinting, and ensuring security and performance optimization.

Design and implement frontend applications using JS, CSS, React, and Flutter. Collaborate on technical specs and contribute to documentation, ensuring user experience and performance.

Build, design, maintain, and update websites and software applications supporting global language development and Bible translation work. Responsibilities include writing web content, developing with HTML, CSS, JavaScript, APIs, and WordPress, improving SEO, analyzing requirements, supporting users, documenting website management processes, and contributing to product roadmaps. The role requires independent and collaborative work, with travel to development-team meetings and language technology conferences.

Develop and maintain ASP.NET web applications using HTML5, CSS3, JavaScript, jQuery and C#. Collaborate on UI/frontend implementation; contribute to application feature development and maintenance. Seattle-based permanent role requiring work authorization.

Own end-to-end full-stack web features spanning TypeScript React front-ends and JVM (Kotlin/Java) backends. Design and implement APIs/services (REST/gRPC), data models, auth/onboarding flows, and admin/authoring surfaces. Ensure performance, reliability, security, observability, and test coverage. Lead architecture, RFCs, incident response, and mentor other engineers while collaborating across product, design, and infrastructure.

Develop and maintain mobile web and single-page UI applications using HTML5, CSS3, AngularJS, jQuery and Bootstrap. Translate functional/non-functional requirements to system requirements, provide production support and performance tuning, implement responsive designs across iOS/Android/Windows Phone, and work with clients in a global delivery environment within the Communications domain.

Design, build, and deliver responsive web features for a global audience. Implement HTML/CSS/JavaScript and jQuery-based UI, ensure strong UX, work with C# back-end code, follow Agile/Scrum, and support e-commerce solutions while maintaining quality and communication.

Front-end design developer responsible for UI prototyping and production, creating responsive interfaces, defining UI patterns and interaction guidelines, and applying conversational UI and bot concepts. Must provide a portfolio of prior work and contribute to visual, motion, and interaction design across evolving platforms.

Develop complex front-end web applications using JavaScript and AngularJS. Build user-focused UI, convert designs into working interfaces, provide portfolio/proof of work, and optionally work with modern video streaming and WebRTC technologies.

Develop and maintain web applications using C# and .NET backend technologies and front-end tech (HTML, CSS, jQuery). MVC experience preferred; knowledge of React, Angular, or Knockout is a plus. Requires a minimum of two years web development experience.

This role involves building and maintaining the SAN.com web ecosystem, enhancing product features, improving CI/CD processes, collaborating across teams, and focusing on user experience.

Design, build, and maintain SharePoint-based websites and components (web parts, master pages, content types). Translate business requirements into repeatable solutions, enhance usability and branding, produce documentation, create and run test scenarios, and support multiple high-priority user issues while transferring knowledge to support teams.

The Senior Web Developer will enhance site performance, establish best practices, and develop performance-based release gating mechanisms.

Develop web interfaces and multi-tier solutions using Microsoft technologies, TSQL programming, and web services integration. Write high-quality code and unit tests, coordinate with team members, and create technical documentation.

The role involves developing web interfaces, building multi-tier solutions, and programming with SQL and C#. Responsibilities include debugging, documenting, and ensuring high-quality code within a team setting.

The SDE Web Developer will design, develop, and maintain web applications while leveraging various .NET technologies and Azure services. Responsibilities include customer requirements gathering, working in agile environments, and ensuring high-quality code production.