Senior Front-End Developer

Work Model: Hybrid (Lisbon)

What makes Cognizant a truly unique place to work?

Cognizant offers strong growth, global reach and an innovative environment where tech professionals can deliver meaningful, high‑impact work. Teams collaborate across regions to build and deliver advanced solutions for leading companies, enabling greater agility, innovation and performance.

We are seeking a talented and experienced Senior Front-End Developer to join our team in Lisbon. The ideal candidate will have a strong background in modern component frameworks, web optimization, and accessibility standards.

Can you see yourself in this position? Check the requirements and apply!

Key Responsibilities

• Develop, maintain, and optimize high-quality user-facing web applications using JavaScript and TypeScript.
• Build reliable and scalable interfaces leveraging React, Next.js, or similar component-based frameworks.
• Configure and manage build tools such as Webpack, Babel, and other transpilers to support efficient development workflows.
• Implement performance and optimization best practices, including CDN delivery, advanced caching strategies, and SEO optimization to ensure speed, stability, and discoverability.
• Ensure all web solutions align with AAA-level accessibility standards, delivering an inclusive experience for every user.
• Collaborate closely with designers, back-end engineers, and product teams to deliver cohesive, high-quality solutions.
• Stay up to date with emerging front-end technologies, tools, and industry best practices.
  
  

Required Skills

• Proven experience in front-end development at a mid to senior level.
• Strong proficiency in JavaScript and TypeScript.
• Hands-on experience with React, Next.js, or similar modern frameworks.
• Solid understanding of build and transpilation tools, such as Webpack and Babel.
• Demonstrated experience in performance optimization, including CDN integration, caching strategies, and SEO best practices.
• In-depth knowledge of accessibility standards, with practical experience implementing AAA-compliant solutions.
• Strong communication skills in English.
• Excellent problem-solving skills and strong attention to detail.