Our client is seeking Application Developer (React.js, redux Javascript) a to join their team. **Title: Application Developer (React.js, redux Javascript)** **Location: St. Louis MO** **12 months** Job Summary: Job description: Lead and mentor a team of frontend developers, ensuring best practices in React.js, Redux, and modern JavaScript. • Architect and design scalable frontend solutions, ensuring high performance and responsiveness. • Stay updated with the latest frontend technologies and industry trends. • Design, develop, and optimize complex React applications with Redux state management. • Ensure smooth API integration with backend services using RESTful APIs. • Write clean, maintainable, and well-documented code following best practices. • Implement UI/UX best practices and ensure cross-browser compatibility. • Work closely with product managers, UX/UI designers, and backend engineers to deliver high-quality applications. • Participate in code reviews, pair programming, and knowledge-sharing sessions. • Provide technical guidance on architectural decisions and code quality. • Optimize application performance, load times, and responsiveness. • Ensure frontend security best practices, including authentication and authorization. Must-Have: • Strong proficiency in JavaScript (ES6+), TypeScript, HTML5, and CSS3. • Experience with Redux (Thunk, Saga) for state management. • Deep understanding of React hooks, component lifecycle, and performance optimization. • Experience in integrating with RESTful APIs. • Familiarity with modern UI frameworks (Material-UI, Tailwind, Styled Components). • Experience with testing frameworks (Jest, React Testing Library). • Knowledge of CI/CD pipelines, Git, and DevOps best practices. • Experience in leading and mentoring frontend teams. About ManpowerGroup, Parent Company of: Manpower, Experis, Talent Solutions, and Jefferson Wells ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We develop innovative solutions for hundreds of thousands of organizations every year, providing them with skilled talent while finding meaningful, sustainable employment for millions of people across a wide range of industries and skills. Our expert family of brands – Manpower, Experis, Talent Solutions, and Jefferson Wells – creates substantial value for candidates and clients across more than 75 countries and territories and has done so for over 70 years. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2022 ManpowerGroup was named one of the World's Most Ethical Companies for the 13th year - all confirming our position as the brand of choice for in-demand talent. ManpowerGroup is committed to providing equal employment opportunities in a professional, high quality work environment. It is the policy of ManpowerGroup and all of its subsidiaries to recruit, train, promote, transfer, pay and take all employment actions without regard to an employee's race, color, national origin, ancestry, sex, sexual orientation, gender identity, genetic information, religion, age, disability, protected veteran status, or any other basis protected by applicable law.