React Js Web Developer Jobs in Wisconsin (NOW HIRING)

Description - External
Senior Full Stack Developer (Reactjs& Nodejs)
Cognizant's Digital Engineering practice is seeking a highly qualified Senior Full Stack Developer (Reactjs& Nodejs) (Hybrid) with 7+ years of experience developing and building high-performing, scalable, enterprise applications. You will be part of a digital software team that works on high-demand applications. Our engineers have a passion for high-quality, reliable and maintainable code. You will work side by side with product managers, designers, and clients, making decisions together to quickly deliver valuable working software to clients and their users. Our engineers are agile and retrospective, and not afraid to identify what we're doing wrong, so we can fix it, and what we're doing right, so we can improve on it. Above all, we judge success by the success of our team and the happiness of our customers.
Cognizant Digital Engineering If you're like us, you've got big ideas. At Cognizant, we're exploring new ideas every day. We help industry leading companies reinvent their business models and innovate products that create new value-by connecting people with things, insights and experiences. Cognizant digital engineering designs, engineers and delivers digital products and experiences that drive digital-first business models. We offer the most comprehensive digital engineering expertise and client-centric methodology for sustainable innovation.
Location: Hybrid - Brookfield, WI ;Hopkins, MN; Chicago, IL; Irving, TX; Atlanta, GA; Portland, OR; Columbus, OH
*You must be legally authorized to work in the USA without the need for employer sponsorship, now or at any time in the future*
Responsibilities:
• Design, develop, and maintain scalable web applications using React.js, Node.js, and modern JavaScript/TypeScript frameworks.
• Build reusable, efficient, and high-performance front-end components and backend APIs/services.
• Collaborate with product managers, architects, UX designers, and cross-functional teams to deliver business requirements.
• Develop RESTful APIs, microservices, and integrations with third-party systems and cloud platforms.
• Optimize application performance, security, scalability, and responsiveness across devices and browsers.
• Participate in code reviews, technical design discussions, and mentor junior developers within the team.
• Troubleshoot production issues, perform root cause analysis, and implement long-term solutions.
Qualifications:
• 7-10 years of hands-on software development experience with strong expertise in React.js and Node.js.
• Proficiency in JavaScript (ES6+), TypeScript, HTML5, CSS3, and modern front-end development practices.
• Strong experience with state management libraries such as Redux, Context API, or similar tools.
• Expertise in building REST APIs, backend services, and working with Express.js or similar Node.js frameworks.
• Experience with databases such as SQL, or other relational/non-relational databases.
• Strong understanding of software design principles, microservices architecture, and performance optimization.
• Experience working in Agile/Scrum environments with excellent problem-solving and communication skills.
Salary and Other Compensation:
Applications will be accepted until June 15th, 2026.
The annual salary for this position is between $ 83,250 to $ 132,000 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
Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.
About usCognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, building the bridge between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization's unique context into technology systems that amplify human potential, realize tangible returns and keep global enterprises ahead in a fast-changing world. See how at www.cognizant.com or @cognizant.
Additional employment information
Compensation 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.
Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.
Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, state or local laws.
If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] for roles based in the Americas or [email protected] for roles based in India.