Top Front End Developer Jobs in Washington, DC

Architect and build a high-performance trading platform for active traders. Develop responsive web interfaces integrating real-time market data, low-latency execution workflows, and advanced trading tools. Collaborate with cross-functional engineering teams on large-scale initiatives, emphasizing scalability, performance, API quality, maintainability, developer experience, and end-user usability.

Develop and maintain scalable Java and Spring Boot REST services, APIs, and microservices for mission-critical geospatial systems. Support containerization, orchestration, CI/CD, DevOps automation, testing, infrastructure deployment, data platforms, and third-party integrations. Contribute to architecture, performance optimization, troubleshooting, documentation, stakeholder demos, and Agile delivery. The role requires onsite work in Herndon, Virginia and collaboration on national security missions.

Lead frontend engineering for large-scale React web applications. Architect application patterns, structure, libraries, and coding standards; build React applications end to end; conduct code reviews; mentor engineers; promote performance, scalability, and maintainability; and collaborate with designers, product managers, and technical and non-technical stakeholders.

Perform manual functional, regression, smoke, and exploratory testing for an enterprise application, validating role-based workflows, permissions, usability, accessibility, and release readiness. Document defects and reusable test cases, troubleshoot issues using browser tools, APIs, logs, and SQL, and maintain Azure DevOps evidence. Contribute targeted front-end fixes and enhancements using React, TypeScript, MUI, and TanStack Query while partnering with developers and stakeholders on quality and user-experience improvements.

Build responsive Web3 applications, web SDKs, developer tools, reusable frontend components, and internal Customer Success tools. Collaborate with Product, Design, and Engineering to create scalable, accessible user experiences. Contribute to code and design reviews, automated testing, continuous delivery, coding standards, and AI-assisted development practices.

Own the frontend architecture and implementation of a greenfield legal technology product using React and TypeScript. Build complex workflow experiences, reusable components, state management, forms, validation, API integrations, role-aware interfaces, AI-enabled workflows, and automated tests. Ensure accessibility, performance, responsiveness, browser compatibility, and production quality. Partner with backend, product, and design teams, establish frontend standards, review code, and provide technical guidance to other developers.

Senior frontend-focused software engineer responsible for authentication, verification, and fraud experiences across web, mobile, and backend systems. The role owns team goals, designs and delivers highly available systems, collaborates with product and design partners, improves engineering standards, supports operations and on-call efforts, and mentors engineers. Candidates should have strong web application architecture experience, proficiency with React or Vue and JavaScript or TypeScript, and excellent communication skills.

Volunteer Principal Front End Developer to build React/React Native web and mobile features, mentor engineers, implement scalable full‑stack solutions, ensure cross‑browser compatibility and testing, work with Node/MongoDB/AWS, attend weekly standups, and support a fundraising launch. Minimum 4 hours/week commitment.

Build high-performance, responsive, and accessible frontend applications across e-commerce, B2B, and internal tools using Next.js, React, and TypeScript. Implement design-system components, optimize Core Web Vitals, add animations, support A/B testing, collaborate in a monorepo with backend teams, and design interfaces for AI agents with real-time streaming and error handling.

Develop and maintain responsive, accessible, high-performance front-end applications using React, Node.js, USWDS, and modern JavaScript. Build reusable UI components, integrate REST APIs, optimize Vite builds, and support Nginx-based deployment in containerized environments. Troubleshoot UI, performance, and browser issues while collaborating with UX, product, DevOps, DataOps, and cloud teams. Ensure WCAG and government usability compliance in Agile, distributed environments.

Build, deploy, and own scalable consumer applications and services for a digital lending platform, with a focus on React frontend development. Responsibilities include designing features, automated testing, full software development lifecycle participation, collaboration with cross-functional teams, system scalability and reliability, technical debt reduction, mentoring frontend engineers, and using AI-driven coding agents and agentic workflows.

Develop responsive web applications and modernize legacy systems while combining frontend engineering with UI/UX design. Create wireframes, user flows, prototypes, and design standards; conduct user research; present designs; and incorporate stakeholder feedback. Collaborate with product, design, and engineering teams, support RESTful APIs and database design, and implement user stories in Agile/Scrum environments. The role requires occasional classified-facility visits and work with government, DoD, or Intelligence Community systems.

Build and own user-facing frontend interfaces across AI agents, app-building tools, mobile PWA experiences, and marketing pages. Responsibilities include frontend architecture, system design, data modeling, API design, maintaining high-quality monorepo code, independently shipping customer features, and delivering polished UX/UI. The role requires strong TypeScript and React expertise, familiarity with AI coding workflows, and ideally experience with containers, Postgres, and Redis.

Build and ship frontend features for a financial marketplace using React and Next.js. Collaborate with product, design, and backend engineers; contribute to architecture, component design, code quality, tooling, and the shared component library. Own work from design through delivery, participate in pairing and code reviews, and use AI-assisted development tools thoughtfully.

Build the realtime, HIPAA-compliant messaging and collaboration frontend ('Pulse') that makes an AI colleague feel human. Implement complex interactive data visualizations, micro-interactions, and high-performance accessible interfaces. Work embedded with product and design, own UI quality, iterate on AI-driven specs, and deliver production frontend experiences clinicians will trust.

3-month contract Frontend Engineer to build client-facing UIs and integrations for cybersecurity use cases. Collaborate with product, design, and engineering to deliver secure, performant, scalable features, maintain component libraries and automated tests. Remote (GMT+8) role focused on TypeScript and modern web tooling.

Design, build, and deliver front-end features with strong UX focus. Own technical design, coding, testing, deployment, and monitoring in a continuous delivery, microservices environment. Collaborate with Product, implement automated QA practices, and contribute to production deployments while practicing robust testing methodologies.

Build, test, and optimize responsive web applications using Next.js and React. Collaborate with designers and back-end developers, implement UI/UX designs, write clean maintainable code, and debug front-end issues to ensure high performance across devices and browsers.

Serves as a technical lead for Military OneSource and related websites, developing WordPress-based front-end experiences with HTML, CSS, and JavaScript. Responsibilities include accessibility compliance, UX implementation, API integration, troubleshooting, Agile collaboration, modernization initiatives, documentation, and developer mentorship. The role is fully remote and requires an active Secret clearance.

Develop, maintain, and optimize production-grade frontend code for enterprise client websites. Participate in code reviews, documentation, accessibility optimization, performance-focused animation, and agile collaboration with multidisciplinary teams. The role requires delivering polished, scalable web experiences for external clients on fixed deadlines while working independently in a remote environment.

Own end-to-end frontend development for core crypto payment flows across web and mobile. Improve latency, availability, and SLOs; build user-facing features (contacts, real-time transaction status); identify and fix performance bottlenecks; partner with product/design/backend; mentor junior engineers to reduce customer friction at scale.

Build performant, accessible front-end interfaces for AI agents, dashboards, conversational user interfaces, and visualization tools. Collaborate with designers, AI engineers, and backend developers to create scalable components, optimize cross-browser experiences, and iterate on UX using testing, feedback, and usage data.

Design, build, and optimize responsive, high-performance front-end interfaces for a Web3 DEX using modern JavaScript frameworks and TypeScript. Collaborate with designers, product, and back-end teams to integrate blockchain APIs and smart contracts, mentor junior developers, troubleshoot issues, and contribute to mobile-first/PWA development while ensuring scalability and maintainability.

Build and maintain responsive, accessible React/NextJS web interfaces and support Chrome extension development (Manifest V3). Integrate with backend APIs or WebSockets, optimize performance, write tests, perform code reviews, monitor and document extension and web app behavior, and collaborate with cross-functional teams.

Lead frontend development for Coinbase identity experiences including login, signup, OAuth, account security, and multi-factor authentication. Own projects from design through deployment and monitoring, guide Native versus Webview architecture, author technical designs, resolve systemic technical debt, lead on-call and incident response, and mentor engineers.