Founding Engineer

Hobbes

• $180K — $230K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Experience in shipping LLM systems to production with a focus on troubleshooting and resolution.
  • Ability to quickly pivot away from features that don’t gain traction or functionality.
  • Demonstrated sense of ownership and initiative in project management.
  • Strong background in building real-time voice and generative UIs.
  • Familiarity with developing evaluation loops that enhance product intelligence.

Responsibilities

  • Develop the LLM orchestration and conversation flow.
  • Create a generative UI that adapts dynamically to audience interest.
  • Design an evaluation loop for continuous improvement of demos.
  • Build the customer platform for agent configuration, review, and tuning.
  • Engage in hands-on work including CSS, migration scripts, and debugging.

Benefits

  • Founding-caliber equity participation.
  • Opportunities for impact in early-stage product development.
  • In-person collaboration in a dynamic San Francisco environment.
  • Access to a direct line of communication with executive leadership.
Full Job Description
Hobbes is a self-improving agent that runs product demos today and full sales conversations soon. Arjun (CTO) and Chirag (CEO) are the team today. You'd be the second engineer: real-time voice, generative UI that redraws itself based on who's watching, custom LLM orchestration, eval loops that actually move the needle. The roadmap isn't written. You'll help write it.

What you'll build
  • The agent. LLM orchestration, conversation flow, tool use, voice.
  • Generative UI that adapts in real time to what the prospect cares about.
  • The eval loop. Demos get smarter without manual intervention.
  • The platform customers use to configure, review, and tune their agent.
  • And yes: CSS, migration scripts, customer debugging. Early-stage means all of it.
What we're looking for
  • You've shipped LLM systems to production and can talk about what broke and what you did about it.
  • You move fast without creating hidden problems. You've also killed features that weren't working.
  • You take ownership without being asked.
Comp
  • Base: $180-230K
  • Equity: Founding-caliber
  • Location: In-person, San Francisco
Process

4 rounds: Arjun, Chirag, async case study, paid 3-day work trial in the office. About 2 weeks from first conversation to offer.

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