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Addison Group

Senior Frontend Developer ( {{city}})

Addison Group, Washington, District Of Columbia, United States, 20022

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Job Title:

Senior Frontend Developer Location:

Washington, DC Employment Type:

Full-time | Onsite

About the Role Were looking for a

Senior Frontend Developer

to lead the development of engaging, scalable, and high-performance web applications. Youll work closely with product managers, designers, and backend engineers to turn complex business requirements into intuitive user experiences. As a senior team member, youll help shape the frontend architecture, mentor junior developers, and advocate for best practices in modern UI development.

Key Responsibilities Design and build responsive, user-centric web interfaces using modern JavaScript frameworks (React, Angular, or Vue). Translate product requirements and UX wireframes into functional, maintainable code. Optimize applications for speed, performance, accessibility, and scalability. Collaborate with backend developers to integrate RESTful APIs and other services. Ensure code quality through automated testing, code reviews, and continuous integration practices. Lead architectural discussions and front-end technology strategy decisions. Stay current with industry trends and emerging frontend technologies. Mentor and support junior developers, fostering knowledge sharing across the team.

Required Qualifications 12+ years of professional experience in frontend development Expert-level proficiency in

HTML5, CSS3, JavaScript (ES6+) Strong experience with one or more modern JS frameworks:

React, Angular, or Vue.js Experience with

state management libraries

(e.g., Redux, MobX, Vuex) Proficiency in using build tools and package managers ( Webpack, Vite, NPM/Yarn ) Familiarity with

RESTful APIs , GraphQL, and integrating backend services Understanding of

responsive design , cross-browser compatibility, and accessibility (WCAG) Experience with version control tools like

Git

Preferred Qualifications Experience with

TypeScript Familiarity with

Next.js ,

Nuxt.js , or

server-side rendering (SSR) Experience with design systems and component libraries (e.g., Material UI, Tailwind, Bootstrap) Exposure to testing frameworks (e.g.,

Jest, Cypress, Playwright ) Understanding of CI/CD pipelines and deployment workflows Prior experience in Agile/Scrum development environments