Cognizant

Senior UI Developer (React & TypeScript)

Cognizant$68K — $114K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Computer Science, IT, Engineering, or related field.
  • Experience with React 18+ and modern frontend development practices.
  • Strong proficiency in JavaScript (ES6+) and TypeScript.
  • Experience with building reusable UI components and integrating with RESTful APIs.
  • Knowledge of state management solutions like Redux Toolkit or Context API.
  • Background in application monitoring using tools like Application Insights or OpenTelemetry.
  • Understanding of frontend optimization techniques and web performance best practices.

Responsibilities

  • Design and maintain scalable web applications using React 18+ and its modern features.
  • Develop reusable and responsive UI components with JavaScript and TypeScript.
  • Integrate frontend applications with backend APIs to ensure seamless functionality.
  • Apply best practices for frontend architecture and state management.
  • Implement monitoring and telemetry tools to track application performance.
  • Analyze KPIs including Core Web Vitals and user engagement metrics.
  • Optimize application performance through code splitting and lazy loading strategies.

Benefits

  • Medical/Dental/Vision/Life Insurance
  • Paid holidays plus Paid Time Off
  • 401(k) plan and contributions
  • Long-term/Short-term Disability
  • Paid Parental Leave
  • Employee Stock Purchase Plan
Full Job Description
About the role
We are seeking a Senior UI Developer (React & TypeScript) to design, develop, and maintain modern, scalable web applications that deliver exceptional user experiences. In this role, you will leverage React 18+, TypeScript, and modern frontend development practices to build high-performing applications. You will collaborate with cross-functional teams, contribute to architectural decisions, optimize application performance, and ensure the delivery of high-quality software solutions in an agile environment.

In this role, you will:
• Design, develop, and maintain scalable web applications using React 18+, leveraging modern features such as hooks, concurrent rendering, and component-driven architecture.
• Build reusable, responsive, and high-performing UI components using JavaScript (ES6+) and TypeScript.
• Integrate frontend applications with backend APIs and services to deliver seamless end-to-end functionality.
• Apply frontend architecture best practices and implement efficient state management solutions using Redux Toolkit, Context API, or Zustand.
• Implement and monitor application telemetry using tools such as Application Insights and OpenTelemetry to track application health, performance, and user behavior.
• Analyze and contribute to KPI reviews, including Core Web Vitals (LCP, CLS, INP), page performance metrics, and user engagement analytics.
• Optimize application performance through techniques such as lazy loading, code splitting, memoization, and efficient rendering strategies.
• Participate in code reviews, unit testing, and troubleshooting activities using tools such as Jest and React Testing Library to ensure high-quality software delivery.
• Collaborate with product owners, business stakeholders, designers, and engineering teams to deliver innovative solutions and enhancements.
• Contribute to continuous improvement initiatives and promote frontend engineering best practices across development teams.

Work model:

We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role's business requirements, this is a hybrid position requiring 3 days a week in a client or Cognizant office in Woonsocket, RI. Regardless of your working arrangement, we are here to support a healthy work-life balance though our various wellbeing programs.

The working arrangements for this role are accurate as of the date of posting. These may change based on the project you are engaged in, as well as evolving business and client requirements. We will always be transparent about role expectations.

Please note: Some roles may require in-person interviews at Cognizant offices or client locations based on project needs.

What you need to have to be considered
• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field.
• Experience developing and maintaining web applications using React 18+.
• Strong proficiency in JavaScript (ES6+) and TypeScript.
• Experience building reusable UI components and integrating applications with RESTful APIs.
• Knowledge of modern state management solutions, including Redux Toolkit, Context API, or Zustand.
• Experience implementing application monitoring and telemetry solutions using tools such as Application Insights or OpenTelemetry.
• Understanding of frontend performance optimization techniques and web performance best practices.
• Experience with software testing frameworks such as Jest and React Testing Library.
• Familiarity with Agile development methodologies and collaborative software delivery practices.
• Strong analytical, problem-solving, and communication skills.

This will help you stand out
• Experience monitoring and improving Core Web Vitals (LCP, CLS, INP) and frontend performance metrics.
• Expertise in frontend architecture and scalable component design patterns.
• Experience with application observability, telemetry, and user analytics platforms.
• Strong understanding of accessibility, responsive design, and modern web development standards.
• Experience contributing to code reviews, mentoring team members, and driving technical excellence.
• Familiarity with CI/CD practices and modern DevOps workflows.
• Ability to work effectively in Agile/Scrum environments and collaborate across cross-functional teams.
• Passion for continuous learning and staying current with emerging frontend technologies and industry trends.

Salary and Other Compensation:
The annual salary for this position is between $68,442 to $114,000 depending on experience and other qualifications of the successful candidate.
This position is also eligible for Cognizant's discretionary annual incentive program, based on performance and subject to the terms of Cognizant's applicable plans.

Benefits:

Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:
• Medical/Dental/Vision/Life Insurance
• Paid holidays plus Paid Time Off
• 401(k) plan and contributions
• Long-term/Short-term Disability
• Paid Parental Leave
• Employee Stock Purchase Plan

Disclaimer:

The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

*Please note, this role cannot offer visa transfer or sponsorship now or in the future*

About Cognizant

TriZetto is Powering Integrated Healthcare Management. With technology solutions touching more than half the U.S. population today, TriZetto is uniquely positioned to drive the convergence of core benefit administration, care management and constituent engagement. TriZetto provides premier information technology solutions that enable payers and other constituents in the healthcare supply chain to improve the coordination of benefits and care for healthcare consumers.

Cognizant Careers

Join the vibrant team at Cognizant, a leading provider of information technology, consulting, and business process services. Cognizant is not just a company; it's a community where innovation, leadership, and diversity are valued and where every team member is encouraged to thrive.

Work You’ll Do

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Whether you're looking for an entry-level position or a more senior role, Cognizant offers a plethora of job opportunities that could be perfect for you. Our hiring process is designed to be transparent and engaging, ensuring that every candidate is able to showcase their skills and potential fully.

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Learn more about Cognizant
Size
340,400 employees
Market Cap
$28.7 billion
Industry
Net Income
$1.3 billion
Founded
1994
5 Year Trend
+6.5%
Revenue
$16.6 billion
NASDAQ

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