Product Software Engineer

Harrison Clarke
San Francisco, California, United StatesFull-timeFrom $400,000Posted Sep 14, 2026

About the role

The best software engineers I know don't want to just write code.

They want to own the problem.

I'm working with a rapidly scaling AI company in San Francisco that is building something I think is genuinely interesting: the next generation of software where AI agents actually do the work.

They're looking for an exceptional Product Software Engineer to help define what that future feels like.

This isn't a traditional frontend role.

You'll be building the experiences through which people interact with autonomous agents - figuring out how users delegate work, understand what an agent is doing, handle uncertainty, review outputs, and ultimately trust AI to take action on their behalf.

And you'll own those problems end-to-end.

From:

→ Product thinking & interaction design

→ Client architecture & UX

→ APIs & data models

→ Production systems & operations

→ Customer feedback → iteration → shipping

The team is deliberately looking for strong generalists with exceptional product judgment, rather than someone who simply checks a particular stack.

They're looking for engineers who:

  • Think from first principles
  • Have strong CS fundamentals
  • Have shipped meaningful production software and owned it after launch
  • Care deeply about craft, speed and performance
  • Are comfortable operating with very little process
  • Use AI seriously in their own work and have formed strong opinions about where the technology is heading
  • Want responsibility rather than a narrowly defined box

This is a hands-on IC role. Everyone builds.

And the opportunity is unusually high-leverage: you'll be working on product interactions that simply don't have an established playbook yet.

If you're the kind of engineer who could thrive at a top AI lab but would rather have outsized ownership over what gets built, I'd love to speak.

Feel free to apply below or alternatively reach out to me at reece@harrisonclarke.com

Responsibilities

  • Define product thinking & interaction design
  • Client architecture & UX
  • APIs & data models
  • Production systems & operations
  • Customer feedback, iteration, and shipping

Qualifications

  • Strong generalist with exceptional product judgment
  • Strong CS fundamentals
  • Experience shipping meaningful production software
  • Deep care for craft, speed, and performance
  • Comfortable operating with little process
  • Experience using AI in work

Benefits

  • Equity

Skills mentioned

AI AgentsGenerative AIFrontend DevelopmentBackend DevelopmentSystem DesignREST APIsDatabase DesignCloud ComputingPerformance OptimizationDistributed Systems

About Harrison Clarke

Harrison Clarke is the search and venture firm that builds engineering teams at VC-backed startups across three disciplines: infrastructure, software engineering, and artificial intelligence. We partner with tier-1 venture capital firms including Sequoia, Sutter Hill Ventures, Menlo Ventures, Greylock, and NEA (amongst others) to place top talent into their portfolio companies as they grow from pre-seed stage through to pre-IPO. Hiring is the foundation of what we do, but it's one part of a broader ecosystem we've built around the founders we work with. We invest into the startups we partner with through Harrison Clarke Ventures. We connect founders with senior technical advisors through our VC network. We produce Inside the Silicon Mind, a podcast featuring the founders and investors shaping the future of technology. And we host curated dinners that bring founders together with engineering leaders, design partners, and potential customers. A founder comes to us for hiring, meets an advisor through our network, gets in front of enterprise buyers at a dinner, and tells their story on the podcast. The companies we believe in most, we invest in.

Staffing and Recruiting11-50 employeesSan Francisco, California