> Markdown version of [/jobs/ext/4014195-position-senior-react-developer-location-remote-u-s-based-preferred-duration-long-term-contrac](https://www.wearedevelopers.com/jobs/ext/4014195-position-senior-react-developer-location-remote-u-s-based-preferred-duration-long-term-contrac). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Position: Senior React Developer Location: Remote (U.S.-based preferred) Duration: Long-term Contrac - **Company:** Kasmo Inc - **Location:** Fort Mill, SC, United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Agile Methodology, Code Review, Scrum Methodology, Web Applications, ReactJS, Software Security, Technical Debt, Backend, Graphql, Front End Software Development, Legacy Systems - **Published:** October 29, 2026 - **Apply:** https://www.thejobnetwork.com/job/7dde6024-8d2b-479b-98fb-10d4a911099c/position-senior-react-developer-location-remote-usbased-preferred-duration-longterm-contrac ## About the Role We are seeking a Senior React Developer to join a large-scale modernization initiative focused on enhancing customer loyalty and digital customer experience platforms. This role will contribute to the development of customer-facing web applications that support rewards, loyalty programs, and self-service experiences., * 5 years of professional front-end development experience * Strong hands-on experience with React.js * Expert-level JavaScript skills * Experience consuming GraphQL APIs * Experience working within large enterprise web application environments * Ability to quickly understand existing applications and contribute with minimal ramp-up time * Experience working within Agile development teams, * React 18 experience * Full-stack development experience * Experience in retail, e-commerce, customer experience, or loyalty platforms * Experience modernizing legacy applications * Knowledge of application security best practices * Experience supporting web applications consumed through mobile web views ## Description You will join an established Agile team responsible for modernizing existing applications, improving scalability, addressing technical debt, and delivering new customer capabilities on an accelerated timeline. Responsibilities * Develop and enhance customer-facing web applications using React and JavaScript * Build modern, responsive user experiences that integrate with GraphQL services * Participate in application modernization efforts, including migrating functionality from legacy applications into new repositories and architectures * Collaborate with backend engineers, product teams, and architects to deliver new features * Troubleshoot and resolve issues related to performance, security, and usability * Participate in Agile ceremonies including standups, sprint planning, and code reviews * Rapidly onboard into an existing codebase and contribute immediately