Kaizen
Closed

Founding Engineer

San Francisco, CA
Full-time
Visa Sponsorship

About the role

As a Founding Engineer, you'll architect and build the core systems that power browser automation at scale — then make them accessible through beautiful, intuitive interfaces. You'll work directly with customers, shape product direction, and own critical infrastructure that processes millions of automated interactions.

What You'll Build

  • Browser orchestration systems that handle complex authentication, anti-bot measures, and session management across thousands of websites
  • AI-powered automation engines that understand and interact with web applications using natural language instructions
  • Enterprise-grade infrastructure supporting real-time, critical automation workflows
  • Developer tools and APIs that make complex automation feel approachable — dashboards, debugging tools, and workflows that just work
  • Polished user interfaces that turn technical complexity into experiences business users can understand and trust

We're Looking For

  • 2-6 years of experience building production systems and user-facing features
  • Systems thinking - you understand distributed systems, concurrency, and performance optimization
  • Full-stack expertise - strong with TypeScript, React, Node.js, and modern web technologies
  • Frontend + design sense - you can build UIs that don't just work, but feel great to use. You understand that good design is good business
  • Product mindset - you talk to customers, understand their pain, and ship solutions that solve real problems
  • High agency - you identify problems and fix them without being asked

Bonus Points

  • Design background or strong visual/UX sensibilities - you know what good product design looks like
  • Browser automation experience with tools like Playwright, Selenium, or Puppeteer
  • Knowledge of browser internals, DevTools Protocol, or anti-detection techniques
  • Background in AI/ML, particularly LLMs, prompt engineering, or evals
  • Previous startup experience or experience building successful developer tools
  • Vertical domain knowledge in logistics, healthcare, or financial services

What We Offer

  • Significant equity in a fast-growing company targeting a massive market
  • Direct customer impact - your code will automate workflows for major enterprises
  • Learning environment - work closely with experienced founders and world-class advisors
  • Competitive compensation - $160K-$235K base salary plus equity
  • Full benefits - health, dental, vision, unlimited PTO
  • San Francisco office - collaborate in-person with the team

About Kaizen

Automate anything on the web.

Required skills

Node.js
React
TypeScript
Next.js

Other roles at Kaizen

No longer accepting applications

This role has closed. See other open roles at Kaizen below.

Browse open jobs

Job details

Salary

$160,000 - $235,000

Equity

0.5% - 1.5%

Location

San Francisco, CA

Experience

0+ years

Company

NameKaizen
IndustryB2B
Team Size6

Funding

Total raised

$4.5M

Last stage

Seed

Investors

NEA
Andreessen Horowitz
Accel
7776
CCarpenter Capital

Founders

NR

Nikhil Reddy

Founder

KS

KJ Shah

Founder

Michael Silver

Michael Silver

LinkedIn
Kenneth Acquah

Kenneth Acquah

LinkedIn

What happens next.

No applications, no recruiter spam. Just the intro.

01

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

02

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

03

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.