Senior Frontend Engineer – Voice AI Platform Full-time On-site: Redwood City, CA $200,000-$300,000 $200,000-$300,000 base salary + competitive equity. Offers are performance-based and tied to interview results, not past compensation. Candidates may choose from multiple cash/equity balance options. About this role We are looking for a Senior Frontend Engineer with 3-5 years of experience to join one of the fastest-growing voice AI startups in the world. You'll be building the user experiences that power a voice automation platform—from dashboards and analytics to customer-facing tools—as part of a small, high-ownership frontend team reporting directly to the CTO. What you'll be doing - Build and ship React-heavy frontend features end-to-end, including prompt management, dashboards, and analytics. - Write production-grade React and TypeScript code. - Collaborate with backend and full-stack engineers on a small frontend-focused engineering team. - Work directly with customers to onboard, troubleshoot, and turn feedback into UX improvements. - Own frontend architecture decisions and iterate rapidly in a fast-paced startup environment. Qualifications - 3-7 years of frontend engineering experience with a strong focus on React. - Strong experience with React, TypeScript, JavaScript, Node.js, HTML, and CSS. - Experience building production-quality customer-facing web applications. - Ability to thrive in a fast-paced, high-ownership startup environment. Compensation & Benefits - Base salary: $200,000-$300,000 - Competitive equity package - Visa sponsorship available (including H-1B, TN, L-1, E-3, F-1 OPT/CPT, and O-1). Work Arrangement - Full-time - Primarily on-site in Redwood City, CA. About the Company This rapidly growing AI company is reimagining customer communications with cutting-edge voice AI technology. Thousands of organizations use its platform to automate sales, support, and logistics conversations that traditionally required large teams of human agents. Backed by leading venture investors, the company has scaled from approximately $5M to $60M ARR while maintaining a small, highly productive engineering team. Engineers work in a high-trust, high-ownership environment where they lead projects from concept through production and have direct impact on customers. The team values collaboration, customer obsession, rapid execution, and building high-quality products that solve meaningful problems. If you're excited about working on challenging technical problems with exceptional teammates in a fast-growing environment, this is an opportunity to make a significant impact.