--- title: 'Software Engineer (Core Infrastructure) at Browserbase' canonical: 'https://feeny.ai/job/software-engineer-core-infrastructure-browserbase-san-francisco-tz82djh06p0q' type: 'job' last_seen: '2026-09-09' --- # Software Engineer (Core Infrastructure) at Browserbase - **Company:** Browserbase - **Location:** San Francisco, CA - **Employment:** full-time - **Work type:** onsite - **Posted:** 2025-03-25 - **Last confirmed live:** 2026-09-09 - **Apply:** https://jobs.ashbyhq.com/browserbase/bcbf0fb9-2405-497b-bbc9-e09d8f7a4963 ## Job description ## ABOUT THE ROLE Core (aka Browserbase Core Infrastructure) is the backbone of everything we do. This team keeps our browsers running at scale, solving massive distributed systems challenges and making sure our platform is fast, reliable, and scalable. ## WHAT YOU’LL DO - Build, operate, and grow the Browserbase Core platform — designing and developing robust, scalable distributed backends with developer-friendly APIs. - Work closely with the rest of Engineering, gathering input and providing great support so every team can build on Core with confidence. - Help define, scope, and review key projects; set priorities on the roadmap; and sequence deliverables that push the platform forward. - Establish and reinforce best practices around development, operations, and reliability. - Continuously enhance the platform to meet rapidly expanding customer adoption and demand. - Investigate, troubleshoot, and resolve operational issues that arise in production. - Document as you go and share your knowledge with the team. ## TECHNICAL SKILLS - Deep experience building and scaling distributed systems, with scale on the order of hundreds or thousands of instances. - Strong expertise coding in Go or Typescript; bonus if you’ve touched Firecracker or similar VMMs. - Familiarity with CI/CD pipelines, Kubernetes and Docker, message queues, relational databases, automated testing, performance optimization, and zero-downtime multi-region deployments. - A systems-thinking mindset you understand how infrastructure choices ripple all the way up to customer experience. ## YOU’RE A GOOD FIT IF YOU… - Have high agency: you can set direction, make judgment calls, and drive projects forward without waiting for perfect clarity. - Have a strong sense of ownership and bias toward action. - Can drive projects independently, with high accountability without much outside input. - Communicate clearly in writing and in person, and choose the right medium for the message. - Are adaptable and able to dive into unfamiliar systems, learn quickly, and make sound technical decisions. - Enjoy collaborating with a small, ambitious team in a fast-paced environment. - Are excited to work 5 days a week in our San Francisco HQ (or open to relocating here). ## WHY JOIN US - Work on some of the hardest problems in modern infrastructure. - Collaborate with a small, high-bar team of engineers who care deeply about quality. - Build core technology that every Browserbase product depends on. - Join an ambitious startup where your impact will be felt immediately. ## MORE ABOUT BROWSERBASE Browserbase is the complete platform to build and deploy agents that browse and interact with the web like humans. We provide one API key for agents to search and fetch information, fill out forms, and replicate user actions. We are a Series B startup that grew our revenue 5x in 2025 and are continuing to grow, fast. Backed by Kleiner Perkins, CRV, and Notable Capital, our team is building on our CEO's founding vision https://memos.hawkhill.ventures/p/an-internet-browser-for-ai to power the world's best AI tools and help everyone automate the web. ## About Browserbase ## Company Overview - **One-liner**: Browserbase provides a cloud platform for developers to host, administer, and monitor headless browsers, enabling AI agents to reliably interact with the web like humans. - **Entity Type**: Private (Series B) - **Headquarters**: San Francisco, California, United States - **Founded**: 2024 - **Founders**: Paul Klein IV ## Core Business - **Primary industry/industries**: Information Technology, Software, AI Infrastructure - **Target customers**: B2B – developers, AI agent builders, enterprises needing web automation at scale - **Mission or purpose statement**: “Make the web as reliable and programmable as APIs” – empowering agents to access the 85% of the web that traditional APIs can’t reach. ## Products & Services - **[Browser-as-a-Service](https://www.browserbase.com/)**: Give AI agents a real browser to navigate interactive websites, handle logins, CAPTCHAs, and complex workflows without interruptions. Supports Playwright, Puppeteer, Selenium. - **[Fetch API](https://www.browserbase.com/)**: Convert any URL into HTML, JSON, or markdown for quick context retrieval by agents. - **[Search API](https://www.browserbase.com/)**: Web search built for agents – find relevant websites based on a single query. - **[Stealth Browsers](https://www.crunchbase.com/organization/browserbase)**: Provides stealth capabilities for undetected browser automation. - **[Live View iFrame & Live Session View](https://www.crunchbase.com/organization/browserbase)**: Embed browser activity in applications and allow human intervention in agent tasks. - **[Proxy Super Network](https://www.crunchbase.com/organization/browserbase)**: Optimized proxy selection with managed CAPTCHA solving and residential proxies. - **[Contexts API](https://www.crunchbase.com/organization/browserbase)**: Maintain cookies or browser state across multiple sessions. ## Market Standing - **Valuation/Market Cap**: Not publicly disclosed - **Key Metric**: Total funding of **$67.5 million** (Seed $6.5M, Series A $21M, Series B $40M) - **Notable Investors/Partners**: Kleiner Perkins (lead in Seed and Series A), CRV (Series A lead), Notable Capital (Series B lead). Additional investors include 4 others in Series A. - **Growth Signals**: - **36.9M+** unique browser sessions (as of March 2026) - **800,000** weekly SDK downloads - **100,000+** developers using the platform - **2.7x** YoY headcount growth (52 employees, +141% YoY) - **100%** of engineers ship to production - **28%** of team are past founders - Expanding presence in UK, France, Canada ## Competitive Advantages - **Real browser, not an API**: Agents operate in a genuine browser environment, handling dynamic UI, logins, CAPTCHAs, and unpredictable interfaces that APIs cannot access. - **Unblocking capability**: Built-in proxy network, stealth features, and session management allow agents to navigate even the most restrictive websites. - **Production scale**: Supports thousands of concurrent browser sessions with zero setup, enabling enterprise-grade automation. - **Open-source ecosystem**: Stagehand SDK and Browser CLI are open source, fostering community trust and rapid iteration. ## Strategic Focus - **Current priorities**: Building the definitive platform for AI agents to interact with the web – moving beyond simple data extraction to full task completion (filling forms, uploading files, monitoring changes). - **Direction for growth**: Expanding agent capabilities into job applications, vendor portals, government forms, and continuous monitoring; scaling infrastructure to handle millions of sessions; hiring across all functions in San Francisco. ## Why Work Here - **Culture**: Small, high-bar team where “what you build will ship, scale, and have immediate impact.” Values include customer obsession, trust, growth mindset, embracing mistakes, and assuming best intent. - **Remote/Hybrid/Office**: Full-time roles in **San Francisco** (in-office). No remote-first policy indicated. - **Notable perks/engineering culture**: 100% of engineers ship to production; 28% of colleagues are past founders; high ownership and autonomy; “move fast, take ownership, work on things that actually matter.” - **Growth**: 2.7x headcount growth YoY, with active job postings across engineering, GTM, design, and operations. ## Sources 1. [Browserbase.com – Homepage](https://www.browserbase.com/) 2. [Browserbase Careers](https://www.browserbase.com/careers) 3. [Crunchbase – Browserbase](https://www.crunchbase.com/organization/browserbase) 4. [LinkedIn – Browserbase](https://www.linkedin.com/company/browserbasehq) 5. [Ashby Jobs – Browserbase](https://jobs.ashbyhq.com/browserbase) ## Other roles at Browserbase - [Sales Engineer](https://feeny.ai/job/sales-engineer-browserbase-san-francisco-w0c152vndpt5) — San Francisco, CA - [Technical Customer Success Manager (TCSM)](https://feeny.ai/job/technical-customer-success-manager-tcsm-browserbase-san-francisco-mcmvazh0gys4) — San Francisco, CA - [Account Executive](https://feeny.ai/job/account-executive-browserbase-san-francisco-swkkgrw64phq) — San Francisco, CA - [Software Engineer (Dashboard) - San Francisco](https://feeny.ai/job/software-engineer-dashboard-san-francisco-browserbase-san-francisco-twmmbnsr041b) — San Francisco, CA - [Software Engineer (Agent Platform)](https://feeny.ai/job/software-engineer-agent-platform-browserbase-san-francisco-1ctpeggw8qex) — San Francisco, CA