Senior Developer React FSE

Cognizant•Charlotte, NC

18h•$68,422 - $114,000•Hybrid

About The Position

As a Senior ReactJS + Java Developer, you will make an impact by building modern, scalable web applications and contributing to the migration from AngularJS to ReactJS. You will be a valued member of the Technology & Engineering team and work collaboratively with cross-functional teams to deliver high-quality solutions in an Agile environment. Cognizant will only consider applicants for this position who are legally authorized to work in the United States without requiring company sponsorship now or at any time in the future. Minimum 9 years of experience as a senior front-end developer. In this role, you will: Develop and maintain front-end applications using ReactJS and Java, with hands-on coding as a primary responsibility. Lead discussions with clients independently and provide technical guidance. Review architecture and propose solutions for migrating legacy applications from AngularJS to ReactJS. Collaborate with cross-functional teams including DevOps, database, and backend teams. Design and implement APIs and integrate with REST/GraphQL services. Create low-level design documents such as sequence diagrams and schema designs. Build reusable components, frameworks, and proof-of-concepts for UI and middleware. Ensure code quality through unit and integration testing, adhering to secure coding standards. 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 office in Charlotte,NC. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs. What you need to have to be considered Minimum 9 years of experience as a senior front-end developer. Strong expertise in ReactJS, Redux, JavaScript, HTML, CSS, and CSS preprocessors (SASS, LESS). Experience with Bootstrap and unit testing frameworks (Karma, Jasmine). Strong understanding of RxJS and reactive programming. Experience with Angular reactive forms and migration projects. Proficiency in integrating REST/GraphQL APIs. Strong experience in Java, microservices, and Spring Boot. These will help you stand out Familiarity with Next.js, Vite.js, and modern UI frameworks. Experience in Agile delivery and DevOps practices. Excellent problem-solving skills and ability to work independently. Strong communication and collaboration skills for client-facing discussions. Bachelor’s degree in computer science, IT or equivalent Applications will be accepted until January 20th, 2026. Please note: This role will require an in-person meet and greet at our Cognizant offices or client location. Salary and Other Compensation: The annual salary for this position is between $68,422 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.

Requirements

Minimum 9 years of experience as a senior front-end developer.
Strong expertise in ReactJS, Redux, JavaScript, HTML, CSS, and CSS preprocessors (SASS, LESS).
Experience with Bootstrap and unit testing frameworks (Karma, Jasmine).
Strong understanding of RxJS and reactive programming.
Experience with Angular reactive forms and migration projects.
Proficiency in integrating REST/GraphQL APIs.
Strong experience in Java, microservices, and Spring Boot.
Bachelor’s degree in computer science, IT or equivalent

Nice To Haves

Familiarity with Next.js, Vite.js, and modern UI frameworks.
Experience in Agile delivery and DevOps practices.
Excellent problem-solving skills and ability to work independently.
Strong communication and collaboration skills for client-facing discussions.

Responsibilities

Develop and maintain front-end applications using ReactJS and Java, with hands-on coding as a primary responsibility.
Lead discussions with clients independently and provide technical guidance.
Review architecture and propose solutions for migrating legacy applications from AngularJS to ReactJS.
Collaborate with cross-functional teams including DevOps, database, and backend teams.
Design and implement APIs and integrate with REST/GraphQL services.
Create low-level design documents such as sequence diagrams and schema designs.
Build reusable components, frameworks, and proof-of-concepts for UI and middleware.
Ensure code quality through unit and integration testing, adhering to secure coding standards.