Top Web Developer Jobs in Seattle, WA

Develop responsive, interactive, high-performance websites using HTML, CSS, and JavaScript. Translate UX/UI designs into functional web applications, collaborate with backend developers on integrations, optimize performance, maintain code quality, and conduct cross-browser testing and debugging across devices.

Build and maintain scalable customer-facing ecommerce applications using C#, React, and SQL Server. Design features, optimize performance and reliability, participate in architecture and technical standards, review code, mentor engineers, troubleshoot production issues, and participate in on-call rotations.

Supports maintenance, content updates, cleanup, and evolution of existing websites while assisting with a unified web platform. Responsibilities include semantic HTML improvements, redirects, data organization, troubleshooting, frontend and backend development, performance, accessibility, SEO, security, API integrations, and codebase enhancements. The role also supports content migration, structured data, publishing workflows, and collaboration with a senior developer in a remote environment.

Build and maintain Komodo Health’s WordPress marketing site, including custom themes, blocks, templates, plugins, landing pages, performance, accessibility, security, SEO, tracking, and consent. Develop Python or JavaScript agentic workflows using LLM APIs, connect them to marketing and revenue systems, and establish production standards for testing, monitoring, documentation, secrets, and human review. Collaborate with marketing teams to scope technical work and manage the website engineering backlog.

Develop and maintain full-stack Drupal websites and web applications using PHP, Twig, JavaScript, CSS/SCSS, and MySQL. Build custom modules and themes, integrate APIs, manage multilingual content, troubleshoot issues, optimize performance, SEO, accessibility, and privacy, and convert wireframes into functional pages. Collaborate with marketing, engineering, product managers, project managers, and creatives while conducting peer reviews and leveraging AI-assisted development tools.

Build and maintain React-based public websites, owning features from conception through production. Develop reusable component libraries, styling, animations, content platform functionality, server-side rendering, site generation, and mobile-to-web migrations. Collaborate with product, design, and growth teams in a small cross-functional team to deliver high-quality web experiences.

Own and deliver web frontend products at Uber scale, partnering with stakeholders and cross-functional teams. Build applications using React, GraphQL, Flow, CSS-in-JS, Node.js, and Uber’s frontend frameworks. Measure feature experiments, collaborate with Data Science and Product teams, and iterate on user experiences. Mentor junior engineers, provide technical leadership, and ship high-quality features on schedule.

Build and scale web experiences for hunters using modern frontend technologies. Own technical solutions from ideation through delivery, collaborate across Product, Design, QA, and Engineering, run experiments, monitor production health, resolve incidents, write automated tests, and mentor teammates. The role emphasizes frontend quality, performance, scalability, reliability, customer experience, and thoughtful AI experimentation.

Develop and maintain Angular-based B2C eCommerce experiences using TypeScript, NgRx, HTML, CSS, and JavaScript. Build responsive, accessible, SEO-focused pages, CMS components, checkout flows, integrations, and campaign updates. Consume REST APIs, maintain third-party platform integrations, implement analytics and tag management, and write automated unit and end-to-end tests. Collaborate with Creative, Marketing, vendors, and business stakeholders while troubleshooting performance and usability issues and independently managing priorities.

Build and maintain responsive B2C ecommerce experiences using Angular, TypeScript, HTML, CSS, and JavaScript. Develop product pages, CMS components, integrations, checkout features, SEO enhancements, accessibility-compliant interfaces, analytics tracking, and automated tests. Collaborate with Creative, Marketing, vendors, stakeholders, and senior developers while troubleshooting issues, participating in code reviews, and supporting launches and seasonal campaigns.

Design and build conversion-focused landing pages, campaign sites, and brand experiences from concept through production front-end code. Maintain corporate and marketing websites, implement technical SEO, collaborate with design, marketing, product, engineering, and DevOps teams, and perform design QA and cross-browser testing. Manage multiple initiatives, communicate decisions, and ensure accessible, high-performance web experiences.

Senior or Staff Frontend Engineer responsible for developing scalable, high-performance web applications, shaping frontend architecture, mentoring engineers, and leading cross-functional feature delivery. The role requires modern JavaScript and TypeScript expertise, strong UI system design, API integration, debugging, and technical documentation skills. The engineer will also promote AI-assisted and agentic development practices, collaborate with product and backend teams, and build intuitive healthcare payment interfaces.

Develop and maintain secure, responsive, accessible web applications using C# and ASP.NET. Build front-end components with HTML, CSS, and JavaScript; customize Sitecore CMS; support SQL Server database interactions; troubleshoot technical issues; follow DoD security standards; participate in Agile processes; and document code and configurations. The role collaborates with senior developers and requires U.S. citizenship and eligibility for Public Trust clearance.

Lead front-end development and REST API integration for a federal environmental platform. Build accessible React or Angular interfaces, geographic query tools, consultation package features, and species-data integrations. Ensure Section 508 and WCAG 2.0 compliance, produce VPAT accessibility reports, support demonstrations, and implement production feedback. The role is fully remote and requires U.S. citizenship with eligibility for Public Trust clearance.

Develop and maintain platform UI features while leading accessible web-based training content, e-learning modules, videos, job aids, help resources, and adoption metrics dashboards. Support Section 508/WCAG compliance, user testing and training plans, post-deployment monitoring, and resolution of interface issues for a federal data integration platform.

Designs and maintains enterprise disaster recovery architectures across cloud, application, network, and database environments. Leads DR readiness, site validation, replication, failover and failback planning, testing, runbook development, RTO/RPO validation, risk assessments, and executive reporting. Collaborates with cloud, cybersecurity, engineering, and database teams to ensure resilient architectures comply with federal and DoD requirements, including RMF controls and IL5 security standards.

Lead development and maintenance of responsive websites and marketing campaign assets using Node.js and React. Manage backlogs, REST API integrations, Git repositories, Docker deployments, platform performance, security (OAuth2), user access, and stakeholder communication. Mentor developers and deliver cross-functional web improvements.

Senior .NET Web App Developer responsible for designing and building .NET web applications, implementing Oracle PL/SQL solutions, using Entity Framework and Blazor, applying design principles, producing technical documentation, performing performance tuning, and collaborating in Scrum/Agile teams with Bitbucket, JIRA, Tempo, and Confluence.

Develops and tests scalable Java web applications and reusable components throughout the agile lifecycle. Responsibilities include SOAP and REST web services, unit and acceptance testing, code reviews, troubleshooting, load testing, performance tuning, continuous improvement, and sprint communication. The role requires collaboration across development and testing teams, cloud application experience, AWS, CI/CD, J2EE frameworks, and eligibility for a Public Trust clearance.

Own and maintain the WordPress platform end-to-end: hosting, security, performance, technical SEO, tracking (GA4/GTM), integrations (HubSpot/APIs), backups, and documentation. Establish environments, deployment workflows, monitoring, and runbooks while partnering with front-end and marketing teams to ensure reliable, high-performing, and compliant site operations.

Seeking a web developer to build and maintain websites or web applications. The posting provides no additional details about responsibilities, qualifications, technologies, compensation, or work arrangements.

Develops, implements, maintains, tests, and troubleshoots software applications supporting company systems. Collaborates with business analysts and lead developers to analyze requirements, design solutions, document functionality, conduct code reviews, support QA and deployments, manage version-controlled code, and resolve production defects. The role participates in software development projects, communicates progress, and provides on-call night support.

Work on front-end and back-end web projects: create and redesign websites, build sitemaps and wireframes, collaborate with teams, and focus on UI/UX and performant back-end functionality.

Improve and maintain an existing website and interactive dashboard using vanilla HTML, CSS, and JavaScript. Integrate Google Sheets for editable dashboard data, create a manageable blog workflow, refine the user interface, document data sources and implementation, establish repository and Cloudflare deployment processes, and train non-technical users. The project is expected to be completed in approximately two weeks with daily overlap with the Palestine/SWANA team.

Develop and optimize global websites for technical SEO, GEO, crawlability, indexing, performance, internationalization, and user experience. Conduct audits, resolve technical defects, implement metadata, structured data, redirects, canonicalization, internal linking, sitemaps, and robots directives. Collaborate with marketing, search, design, and engineering teams, automate recurring audits, troubleshoot web technologies, validate launches, monitor regressions, and improve visibility across traditional and AI search platforms.