Senior Front End Engineer

We are hiring a Senior Frontend Engineer, Technical Lead with expertise in JavaScript/TypeScript, React.js, and Next.js to join our growing engineering team. This role is ideal for a seasoned engineer ready to drive end-to-end delivery, mentor developers, and make architectural decisions that scale across teams and regions. 

You will serve as a hands-on technical leader, responsible for shaping our front-end architecture, championing best practices, and ensuring our applications are performant, accessible, and maintainable. 

Responsibilities 

Engineering & Architecture

• You will lead the architecture, design, and implementation of complex frontend features and systems using Next.js, React, and TypeScript.

• You will ensure code quality and long-term maintainability through reusable components, atomic design principles, and robust documentation.

• You will integrate REST and GraphQL APIs efficiently and securely, optimizing for performance and scale.

• You will drive the adoption of performance best practices (Lighthouse, Core Web Vitals, caching strategies) and accessibility (WCAG standards).

• You will provide architectural oversight for integrating headless CMS platforms (e.g., Sitecore JSS, Contentful, Sanity).

• You will define and uphold best practices for responsive UI development, cross-browser compatibility, and internationalization/multilingual support.

Technical Leadership

• You will act as the technical authority and primary point of contact for frontend concerns within your cross-functional squad.

• You will own the delivery and stability of complex features from planning through production deployment.

• You will conduct and lead peer code reviews, enforce coding standards, and ensure development consistency across contributors.

• You will guide estimation efforts, break down epics into deliverable stories, and drive sprint-level planning.

• You will collaborate with design, backend, DevOps, and product management teams to deliver high-quality experiences.

Mentorship & Collaboration

• You will mentor and support other frontend developers through pair programming, design sessions, and architecture reviews.

• You will share knowledge through documentation, internal workshops, and informal learning sessions.

• You will actively contribute to team growth by encouraging a culture of ownership, feedback, and continuous improvement.

Required Skills & Experience 

• 6–8+ years of frontend engineering experience. 

• 4+ years of production experience with React.js and Next.js. 

• Strong fluency in JavaScript/TypeScript, including modern ES6+ features. 

• Experience with building and scaling large component libraries or design systems. 

• Deep understanding of API integration patterns, including REST and GraphQL. 

• Proficiency in frontend performance tuning, Core Web Vitals, and Lighthouse audits. 

• Familiarity with automated testing frameworks (Jest, Cypress, Playwright). 

• Experience with modern CI/CD pipelines and cloud deployment platforms (Vercel, Netlify, AWS, etc.). 

• Strong background in headless CMS platforms (Sitecore JSS, Contentful, Sanity, Strapi).

The annual salary range for this position is $94,000 - $152,375. 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.

To begin the application process, please click on the “Apply” button at the top of this job posting. Applications will be reviewed on an ongoing basis, and qualified candidates will be contacted for next steps.

Dentsu is committed to providing equal employment opportunities to all applicants and employees. We do this without regard to race, color, national origin, sex , sexual orientation, gender identity, age, pregnancy, childbirth or related medical conditions, ancestry, physical or mental disability, marital status, political affiliation, religious practices and observances, citizenship status, genetic information, veteran status, or any other basis protected under applicable federal, state, or local law. 

Dentsu is committed to providing reasonable accommodation to, among others, individuals with disabilities and disabled veterans. If you need an accommodation because of a disability to search and apply for a career opportunity with us, please send an e-mail to ApplicantAccommodations@dentsu.com by clicking on the link to let us  know the nature of your accommodation request and your contact information. We are here to support you.