Cognizant

Senior React JS Developer - Onsite

Cognizant • $90K — $110K *
Finance & Insurance
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 5-7 years of experience with JavaScript and React JS in large-scale applications.
  • Strong foundation in component-based architecture and state management frameworks.
  • Proficient in HTML, CSS, and modern JavaScript (ES standards).
  • Understanding of asynchronous programming and REST APIs for backend integration.
  • Familiar with version control, build tools, and front-end development tooling.
  • Experience with unit testing and code quality for front-end applications.
  • Knowledge of secure coding practices for financial services applications.

Responsibilities

  • Lead the development of complex React applications for banking operational workflows.
  • Create responsive and accessible user interfaces using modern web technologies.
  • Optimize application performance and enhance component structure.
  • Collaborate with cross-functional teams to translate business needs into technical solutions.
  • Provide guidance and maintain coding standards for front-end development.
  • Integrate front-end applications with backend APIs while managing error scenarios.
  • Conduct code reviews to ensure high maintainability and low regression.

Benefits

  • Medical, dental, vision, and life insurance.
  • Paid holidays plus paid time off.
  • 401(k) plan with contributions.
  • Long-term and short-term disability coverage.
  • Paid parental leave.
  • Employee stock purchase plan.
Full Job Description
*Please note, this role is not able to offer visa transfer or sponsorship now or in the future*

Role Summary

We are looking for an experienced Senior React JS Developer / Front-End Lead to lead the end-to-end design and development of complex React applications supporting investment products and operational workflows for global banking clients.

The role requires strong hands-on expertise in React JS, JavaScript, front-end architecture, performance optimization, API integration, testing, and secure development practices. Experience within Investment Banking, Brokerage, Trading, or Settlement operations is highly preferred.

Key Responsibilities
  • Lead end-to-end design and development of complex React JS applications supporting investment products and banking operational workflows.
  • Develop highly responsive, scalable, and accessible user interfaces using JavaScript, React JS, HTML, and CSS.
  • Optimize application performance by identifying bottlenecks, improving React component structures, and refining state-management approaches.
  • Work closely with Product Owners, Business Analysts, and Investment Banking Operations teams to translate business requirements into technical designs and implementation plans.
  • Provide technical guidance to developers on JavaScript coding standards, React architectural patterns, reusable components, and secure development practices.
  • Integrate front-end applications with backend services and APIs by defining data contracts, managing error scenarios, and ensuring reliable communication.
  • Conduct code reviews and maintain strong unit-testing coverage to minimize regressions and improve long-term maintainability.
  • Collaborate with Quality Engineering teams to build testable components, support automated user journeys, and resolve issues identified during system and user acceptance testing.
  • Promote continuous improvement through reusable components, streamlined development workflows, and adoption of modern React and JavaScript tooling.
  • Support production applications by analyzing incidents, performing root-cause analysis, implementing fixes, and improving application monitoring.
  • Engage with business and technical stakeholders to present technical options, explain trade-offs, and align solutions with organizational objectives.
  • Create and maintain technical documentation including solution designs, component libraries, configurations, and onboarding documentation.
  • Participate in sprint planning, estimation, and technical risk assessment to develop realistic implementation plans and timelines.
  • Mentor and guide peers on robust front-end development practices without requiring formal people-management responsibilities.

Required Qualifications
  • Extensive hands-on experience with JavaScript and React JS in enterprise-scale applications.
  • Strong knowledge of:
    • React component-based architecture
    • State-management concepts and frameworks
    • JavaScript / modern ES standards
    • HTML and CSS
    • Asynchronous programming
    • REST APIs and backend-service integration
  • Strong understanding of front-end performance optimization and troubleshooting.
  • Experience with version control systems, build tools, package managers, and modern front-end development tooling.
  • Experience implementing unit testing and code-quality practices for front-end applications.
  • Strong understanding of secure coding, data protection, and development practices appropriate for financial-services applications.
  • Ability to investigate complex technical problems, identify root causes, and communicate clear resolution steps.
  • Strong communication skills with the ability to work closely with technical and business stakeholders.

Domain Experience

Practical exposure to one or more of the following is highly preferred:
  • Investment Banking
  • Brokerage
  • Trading applications
  • Investment products
  • Trade processing
  • Settlement workflows
  • Banking operational platforms

Preferred Qualifications
  • Experience with front-end automated testing frameworks.
  • Experience with performance monitoring and observability tools.
  • Experience working with CI/CD pipelines.
  • Experience developing applications supporting high-volume financial transactions or operational workflows.
  • Experience mentoring developers and establishing React development standards.
  • Experience working in a hybrid, global banking environment.

Compensation: - $ 900,000 to $110,000 + COLA + Performance Bonus + Full benefits. Application will be accepted by 10/25/2026

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

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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.

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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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