Senior Frontend Engineer

Senior Frontend Engineer Company: Confidential AI Infrastructure Startup Location: Redwood City, California (Onsite, 5 days/week) Compensation: $200,000 - $300,000 Base + Meaningful Equity Visa Sponsorship: Available (H-1B, TN, L-1, E-3, F-1 OPT/CPT, O-1) About the Company We are a high-growth AI infrastructure startup building real-time voice agent systems that power customer support, sales, and operations for modern businesses. We are backed by top-tier venture capital firms and leading angel investors. The company has scaled rapidly from early revenue to tens of millions in ARR in a short time, with a small, highly technical team operating at extreme efficiency. This is a builder-first environment. We care about speed, ownership, and output - not process. Engineers here are expected to think like founders, move fast, and ship continuously. The Opportunity We are hiring a Senior Frontend Engineer to own and scale the customer-facing surface area of our AI platform. This is a high-ownership, high-impact role. You will be responsible for building and evolving the core frontend systems that customers interact with daily - dashboards, real-time interfaces, prompt tooling, and AI workflow products. You will work directly with founders and customers, and your work will ship to production quickly and frequently. If you want slow-moving enterprise processes, this is not the role. If you want to build fast, own deeply, and see your work in production immediately, this is.

Responsibilities

• Own and ship production React applications end-to-end.
• Build and scale frontend architecture using React + TypeScript.
• Design and implement real-time dashboards, analytics systems, and AI tooling interfaces.
• Work directly with backend engineers to integrate APIs and ship features fast.
• Talk to customers, understand pain points, and turn feedback into shipped product.
• Make architectural decisions and own frontend technical direction.
• Write clean, high-performance, production-grade code.
• Maintain high engineering velocity while keeping code quality high.
• Participate in rapid iteration cycles and frequent releases.

Required Qualifications

• 3–7 years of frontend engineering experience in production environments.
• Expert-level React + TypeScript skills.
• Proven experience building complex, data-heavy web applications.
• Strong understanding of frontend architecture, performance, and state management.
• Experience working closely with backend systems and APIs.
• Ability to operate in high-speed, high-ambiguity environments.
• Bachelor’s or Master’s in Computer Science or equivalent technical background.
• Comfortable working onsite in Redwood City, 5 days/week.

Preferred Qualifications

• Experience at high-growth startups or top-tier product companies.
• Experience building SaaS or developer-facing products.
• Strong product intuition and customer empathy.
• Experience working directly with founders or very small teams.
• Full-stack exposure (Node.js or similar).

Tech Stack

• React
• TypeScript
• Node.js
• Modern JavaScript (ES6+)
• REST APIs
• Cloud infrastructure
• Git

Compensation & Benefits

• $200,000–$300,000 base salary
• Meaningful early-stage equity
• Full medical, dental, and vision coverage
• $70/day meal allowance
• $200/month wellness reimbursement
• Visa sponsorship available
• Direct access to founders and core product decisions

Work Style & Expectations This is a high-intensity, high-velocity startup environment. We operate with a bias toward speed, ownership, and execution over process. Engineers are expected to move quickly, ship frequently, and take full responsibility for their areas. During critical product cycles, launches, or customer-driven deadlines, work intensity may increase significantly. While we do not enforce a formal 996 policy, candidates should be comfortable with startup-style intensity, including extended hours when needed to hit company goals.

We are explicit about this:

This is not a 9–5 role. It is a builder role in a company where speed matters. Interview Process

• Intro Call
• Technical Screen (React)
• Deep Technical + System Design
• Final Onsite