---
title: 'Developer Advocate at Kernel'
canonical: 'https://feeny.ai/job/developer-advocate-kernel-san-francisco-4x6qjb4k8rk1'
type: 'job'
last_seen: '2026-09-06'
---

# Developer Advocate at Kernel

- **Company:** Kernel
- **Location:** San Francisco, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-06-08
- **Last confirmed live:** 2026-09-06
- **Apply:** https://jobs.ashbyhq.com/usekernel/5a4e70ee-666c-4cd0-affb-701b186e1aa8

## Job description

## ABOUT KERNEL

Kernel provides crazy fast, open source infrastructure for AI agents to use the internet. Our API allows developers to instantly spin up secure browsers and automate anything on the web. We handle all the hard problems of running browser-based agents in production: agents x user credentials, autoscaling, bot detection, and human-in-the-loop workflows.

We’re used by teams at Cash App, Vercel, Framer, Rye, and over 5000 developers for tasks like QA automation, RPA, virtual assistants, and CUA RL environments. We've raised https://www.kernel.sh/blog/series-a-announcement $22M from Accel, YCombinator, Vercel, Paul Graham, Solomon Hykes (Docker), David Cramer (Sentry), Charlie Marsh (Astral), and more.

https://www.onkernel.com/docs/careers/devrel-engineer#about-the-role

## About the role

We are an infrastructure company and developers are our core users. As a Developer Advocate, you'll be the public voice of Kernel for developers: creating content, engaging with the community, and bringing insights back to our product and engineering teams. You'll help define how builders learn about browser infrastructure, adopt Kernel, and push the frontier of what AI agents can do on the live Web.

https://www.onkernel.com/docs/careers/devrel-engineer#what-you%E2%80%99ll-do

## What you’ll do

- Build OSS tools, libraries, and integrations that make Kernel’s developer experience more powerful and easier to use
- Create high-quality tutorials, guides, and demos showcasing Kernel's core and emerging capabilities
- Iterate on Kernel's developer documentation as a first-class product surface
- Engage with our community on GitHub/Slack/Discord/Twitter and in-person events, answering questions and amplifying cool projects
- Contribute to Kernel’s technical blog, developing content that educates, inspires, and grows developer adoption

https://www.onkernel.com/docs/careers/devrel-engineer#what-we%E2%80%99re-looking-for

## What we’re looking for

- You're a hands-on builder with LLMs and agents
- Strong technical foundation in software engineering or applied AI. You're comfortable building code samples, demos, and lightweight apps
- Developer empathy: you know what excites them, what annoys them, and how to speak their language (our inspirations: Modal, Supabase, PlanetScale)
- Skilled communication abilities with a clear, engaging style across writing, video, and live presentations
- Curiosity, high-agency, and a genuine passion to build something that delights software engineers

https://www.onkernel.com/docs/careers/devrel-engineer#what-you-can-expect-as-a-kernel

## What you can expect as a Kernel

- Industry-competitive salary and equity
- Premium medical + dental coverage + dependent coverage
- Small, high-trust team of senior + staff engineers
- Default async with minimal bureaucracy
- Daily lunches on us
- Unlimited PTO
- 401k + company match
- Relocation assistance

https://www.onkernel.com/docs/careers/devrel-engineer#hiring-process

Hiring process

We have a simple process focused on real world collaboration and jointly getting to know each other:

1. 30 minute intro call with one of Kernel’s co-founders
2. 45-minute interview (virtual)
3. Half-day on-site (virtual or in-person) working with our team on relevant challenges.
4. Offer!

## About Kernel

## Company Overview
- **One-liner**: Kernel builds crazy fast, open-source infrastructure for AI agents to access and interact with the internet using cloud-hosted browsers.
- **Entity Type**: Private (Series A)
- **Headquarters**: San Francisco, United States
- **Founded**: 2025
- **Founders**: Rafael Garcia (Co-Founder & CEO) and Catherine Jue (Co-Founder & CTO)

## Core Business
- Primary industry: AI Infrastructure / Developer Tools / Browser Automation
- Target customers: B2B – engineering teams building web agents, browser automations, and AI applications (trusted by Cash App, Framer, Rye, and 3,000+ teams)
- Mission or purpose: To make cloud infrastructure 100x better by providing well-designed, opinionated tooling that unlocks superpowers for the next generation of AI applications.

## Products & Services
- **Kernel Browser API**: An API to instantly launch sandboxed, cloud-based Chromium browsers in under 30ms (cold start) with sub-150ms cold starts on managed headful browsers. Supports headless, stealth, GPU, and profile modes. Integrates with Playwright, Puppeteer, Browser Use, and Computer Use frameworks.
- **Stealth Mode**: Built-in residential proxies and automatic CAPTCHA solving for web agents.
- **Observability Suite**: Session recording (live view), video replays (MP4), full logs, and screenshots for debugging.
- **Agent Runtime (App Platform)**: A serverless compute service to deploy and invoke agent loops on demand or via scheduled events, co-located with browsers to minimize latency.
- **Auth & Session Management**: Persistent sessions that maintain cookies and auth across invocations; managed authentication for agents.
- **Open-Source SDKs & Tools**: `kernel-images` (Go, 924 stars), `hypeman` (multi-hypervisor VM runtime), `kernel-mcp-server` (MCP server for browser automation), CLI, and Node SDK.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed
- **Key Metric**: Total funding of **$22M** (Series A led by Accel, backed by Y Combinator S25 batch)
- **Notable Investors/Partners**: Accel, Y Combinator (S25), Tyler Bosmeny (Primary Partner at YC). Trusted by Cash App, Framer, Rye, and 3,000+ teams.
- **Growth Signals**: Raised $22M in Series A shortly after founding in 2025; Y Combinator batch S25; trusted by major fintech and design platforms; open-source repos gaining traction (kernel-images at 924 stars); team growing from 6 to ~15 employees rapidly.

## Competitive Advantages
- **Performance Moat**: Sub-30ms browser spin-ups and sub-150ms cold starts on managed browsers – significantly faster than competitors.
- **Open-Source Core**: Transparent, community-driven development with 61 public repos, fostering trust and adoption.
- **Full-Stack Observability**: Live view, video replays, and logs built-in from day one – not an afterthought.
- **Stealth & Compliance**: Built-in residential proxies, auto-CAPTCHA solving, SOC 2 compliant, and HIPAA-ready.
- **Founder-Market Fit**: CEO Rafael Garcia was co-founder/CTO of Clever (YC S12, exited for $500M), bringing deep infrastructure and scaling experience. CTO Catherine Jue was co-founder of Sway Finance (YC S16) and led Cash App’s forward-deployed engineering team.

## Strategic Focus
- Scaling the browser infrastructure platform to support more AI agent frameworks and use cases
- Expanding the open-source ecosystem and developer community
- Building out the agent runtime platform for serverless deployment
- Deepening enterprise partnerships and compliance certifications
- Growing the engineering team to accelerate product development

## Why Work Here
- **Early-stage impact**: Join a well-funded Series A startup (15 employees) backed by top-tier investors – opportunity to shape the product and culture from an early stage
- **Founding team pedigree**: Work alongside founders who have built and exited a $500M company (Clever) and led engineering at Cash App
- **Technical challenges**: Build cutting-edge infrastructure for AI agents – browser virtualization, stealth proxies, serverless compute, and observability at scale
- **Open-source culture**: 61 public repos, active community engagement, and commitment to transparent development
- **Work environment**: In-office culture based in San Francisco (4 locations in the US), with a focus on well-designed tooling and developer experience
- **Perks**: Competitive compensation at a well-funded startup; perks and benefits typical of an early-stage YC company (details available on Built In)
- **Current openings**: Infrastructure Engineer, Product Engineer, Backend Engineer, DevRel Engineer, Solutions Engineer, Customer Engineer – indicating strong growth and diverse team needs

## Sources
1. [Y Combinator – Kernel Profile](https://www.ycombinator.com/companies/kernel)
2. [GitHub – Kernel Organization](http://github.com/kernel)
3. [Kernel Documentation](https://www.kernel.sh/docs)
4. [StartupHub.ai – Usekernel Profile](https://www.startuphub.ai/startups/usekernel)
5. [Built In – Kernel Jobs & Careers](https://builtin.com/company/kernel-kernel-sh/jobs)

## Other roles at Kernel

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