Senior Frontend Engineer

Here’s a more aggressive, YC-style, high-signal, 996-transparent version while keeping it professional and not legally risky:

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

1. Intro Call

2. Technical Screen (React)

3. Deep Technical + System Design

4. Final Onsite

If you want, I can also make a “YC Work at a Startup” ultra-condensed version or a more subtle version that still signals intensity without scaring Big Tech candidates .