Senior Frontend Engineer

We are seeking a Senior Frontend Engineer with deep expertise in JavaScript/TypeScript, Next.js, and React.js to join our growing engineering team. Reporting to the CMS Technical Director, you will have a strong track record in building scalable, performant, and maintainable web applications while delivering pixel-perfect, accessible, and high-quality UI components., * Develop & maintain high-performance web applications using Next.js, React, and TypeScript.

• Implement responsive, pixel-perfect UI components based on design system guidelines.

• Integrate APIs (REST, GraphQL) and optimize CRUD operations for performance and scalability.

• Work with headless CMS platforms (e.g., Contentful) for content management and personalization.

• Ensure cross-browser compatibility, web accessibility (WCAG standards), and SEO best practices.

• Collaborate with UI/UX designers, backend engineers, and product teams to build intuitive, frictionless experiences.

• Optimize performance through Lighthouse audits, caching strategies, and Core Web Vitals improvements.

• Write clean, well-documented, and testable code, following modern best practices.

• Conduct code reviews, contribute to technical discussions, and mentor junior developers.

• Work in an Agile/Scrum environment, contributing to sprint planning, retrospectives, and stand-ups.

• 5+ years of front-end development experience focusing on JavaScript/TypeScript.

• 3+ years of hands-on experience with Next.js and React.js in production.

• Advanced CSS skills, including CSS Modules, SCSS, PostCSS, and responsive design principles.

• API Integration & CRUD Operations: Expertise in RESTful APIs and GraphQL.

• Headless CMS Experience: Strong background in Sitecore, Contentful, Optimizely, Sanity, or similar CMS platforms.

• Web Performance & Optimization: Experience with Lighthouse, Core Web Vitals, caching strategies, and performance monitoring.

• Testing & QA: Proficiency in Jest, Cypress, Playwright, and UI testing strategies.

• Version Control & CI/CD: Experience with Git (GitHub/GitLab/Bitbucket), automated testing, and cloud deployments (Vercel, AWS, Netlify, or Cloudflare Pages).

• Design Systems: Experience with Storybook, Material UI, TailwindCSS, or Radix UI.

The annual salary range for this position is $68,000 - $110,000. Placement within the salary range is based on a variety of factors, including relevant experience, knowledge, skills, and other factors permitted by law.

Benefits available with this position include:

• Medical, vision, and dental insurance,

• Life insurance,

• Short-term and long-term disability insurance,

• 401k,

• Flexible paid time off,

• At least 15 paid holidays per year,

• Paid sick and safe leave, and

• Paid parental leave.

Dentsu also complies with applicable state and local laws regarding employee leave benefits, including, but not limited to providing time off pursuant to the Colorado Healthy Families and Workplaces Act, in accordance with its plans and policies. For further details regarding Dentsu benefits, please visit www.dentsubenefitsplus.com.