Software Engineer III, Frontend

Our Mission: Keystone AI's mission is to multiply what matters: growth, retention, and efficiency. We envision a future where companies, teams and people reach their full potential. Our People: People are the heart and soul of Keystone AI. We serve with passion and purpose. We live by our Being Keystone AI values of Win as One Team, Stay Curious, Do The Right Thing, Own the Outcome, and Create Belonging. Every 6sensor plays a part in defining the future of our industry-leading technology. Keystone AI is a place where difference-makers roll up their sleeves, take risks, act with integrity, and measure success by the value we create for our customers. We want Keystone AI to be the best chapter of your career. About the Role We're seeking a Software Engineer III – Frontend to join our Engineering team and build modern, scalable web applications. You'll collaborate with Product Managers, UX Designers, and Backend Engineers to deliver intuitive, high-impact customer experiences while leveraging AI-powered development tools. What will you own Design, develop, test, and maintain React and TypeScript applications. Build reusable UI components and contribute to frontend architecture and design systems. Collaborate with Product, Design, and Backend Engineering teams. Optimize performance, accessibility, scalability, and responsiveness. Write clean, maintainable, well-tested code. Participate in architecture discussions, code reviews, and mentor junior engineers. Contribute across the full stack when needed. Leverage AI-powered coding assistants and agentic workflows. Troubleshoot production issues and drive continuous improvements. What we're looking for Bachelor's degree in Computer Science, Engineering, or related field. 4+ years of frontend software engineering experience. Strong React.js, TypeScript, JavaScript, HTML5, CSS3 skills. Experience with Redux, Context API, or Zustand. Experience with REST APIs, testing frameworks, CI/CD, and AI-assisted development tools. Strong problem-solving, debugging, and communication skills. Preferred: Next.js, design systems, enterprise SaaS, Agile, full-stack experience. Success in this role would look like Deliver high-quality, scalable frontend experiences. Collaborate effectively across teams. Drive engineering excellence and mentor peers. Improve performance, reliability, and user experience. Adopt AI-powered development to accelerate delivery. Our Benefits: Full-time employees can take advantage of health coverage, paid parental leave, generous paid time-off and holidays, quarterly self-care days off, and stock options. We’ll make sure you have the equipment and support you need to work and connect with your teams, at home or in one of our offices. We have a growth mindset culture that is represented in all that we do, from onboarding through to numerous learning and development initiatives including access to our LinkedIn Learning platform. Employee well-being is also top of mind for us. We host quarterly wellness education sessions to encourage self care and personal growth. From wellness days to ERG-hosted events, we celebrate and energize all Keystone AI employees and their backgrounds. Equal Opportunity Employer: Keystone AI is an Equal Employment Opportunity and Affirmative Action Employers. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender perception or identity, national origin, age, marital status, protected veteran status, or disability status. If you require reasonable accommodation in completing this application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please direct your inquiries to jobs@Keystone AI.com . We are aware of recruiting impersonation attempts that are not affiliated with Keystone AI in any way. A ll email communications from Keystone AI will originate from the @Keystone AI.com domain . We will not initially contact you via text message and will never request payments . If you are uncertain whether you have been contacted by an official Keystone AI employee, reach out to jobs@ Keystone AI.com