Senior Frontend Engineer

dentsu Austria

Senior Frontend Engineer developing scalable web applications using JavaScript, TypeScript, and React for dentsu. Collaborating in an Agile environment and optimizing web performance.

Posted 6/10/2026full-timeIllinois • Illinois • 🇺🇸 United StatesSenior💰 $68,000 - $110,000 per yearWebsite

Tech Stack

Tools & technologies

AWSCloudCypressGraphQLJavaScriptJestMaterial UINext.jsReactSCSSSitecoreTypeScript

About the role

Key responsibilities & impact

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.

Requirements

What you’ll need

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.
Expertise in RESTful APIs and GraphQL.
Strong background in Sitecore, Contentful, Optimizely, Sanity, or similar CMS platforms.
Experience with Lighthouse, Core Web Vitals, caching strategies, and performance monitoring.
Proficiency in Jest, Cypress, Playwright, and UI testing strategies.
Experience with Git (GitHub/GitLab/Bitbucket), automated testing, and cloud deployments (Vercel, AWS, Netlify, or Cloudflare Pages).
Experience with Storybook, Material UI, TailwindCSS, or Radix UI.

Benefits

Comp & perks

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
Paid parental leave

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

JavaScriptTypeScriptNext.jsReactCSSRESTful APIsGraphQLJestCypressAgile

Soft Skills

collaborationmentoringcommunicationproblem-solvingcode review