Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Founding Engineer

$180k - $230k

HOBBES Inc

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.

About Hobbes

A company's most valuable asset is the conversation it has with a buyer. Most B2B websites lose that conversation at the "request a demo" form. Hobbes runs real, conversational product demos 24/7. That's Phase 1. The real bet is a self-improving agentic layer that runs the revenue side of a business.

Every conversation a prospect has with the agent is logged, measured, and fed back into the product. Five prospects tell Hobbes they want to buy but need Hubspot integrated as a non-starter? Hobbes creates the PR autonomously and updates those prospects that it's ready to go-live.

We have secured $6M in funding and have tripled since February, mostly on inbound. One customer 2x'd their revenue within 8 weeks of deploying Hobbes. Another closed a deal within 2-hours of Hobbes going live on their site.

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.

#J-18808-Ljbffr
Vacancy posted 4 days ago
Similar jobs that could be interesting for youBased on the Founding Engineer in San Francisco, CA vacancy
  •  ...Founding Robotics Software Engineer Location: San Francisco (preferred) / US Type: Full-time · Founding Team About Bracket Bot Bracket Bot is building low-cost, general-purpose robots that developers can program and deploy in days. We’re transforming... 
    Suggested
    Full time

    Bracket Bot Inc.

    San Francisco, CA
    1 day ago
  •  ...Visa sponsorship: None available. About the Role: This is a founding hardware role, and the person who fills it owns the physical...  ...hire joins the technical side alongside the CTO and lead software engineer as one of the first ten employees. The role requires someone... 
    Suggested
    Full time
    Visa sponsorship

    Thomas Talent Network

    San Francisco, CA
    26 days ago
  •  ...from across IT and security. Several design partners today and a founding team of three. Full-Time, In-person, San Francisco, CA....  ...About the Role: This is a backend- and systems-heavy founding engineering role where "full-stack" means owning the product and system end... 
    Suggested
    Full time
    H1b
    Visa sponsorship

    Thomas Talent Network

    San Francisco, CA
    21 days ago
  • $500 per month

     ...DESCRIPTIONThis company handles millions of calls per month and needs an engineer who has worked at that scale before and knows how to build...  ...sub-100 milliseconds.You will work on-site directly with the founding team, contributing across architecture, infrastructure, and... 
    Suggested
    H1b

    Affinity Executive Search

    San Francisco, CA
    2 days ago
  • $170k - $250k

     ...Healthcare AI · Founding Team · San Francisco $170K – $250K + 0.5–1.5% Equity SF · Remote-Flexible $5M Raised · Tier-1 VCs 2–4 Founding Engineers No Visa Sponsorship AI Agents Replacing Manual Healthcare Operations A well-funded, early-stage AI startup founded... 
    Suggested
    Internship
    Remote work
    Visa sponsorship
    Relocation package
    Flexible hours

    Aionia Group

    San Francisco, CA
    2 days ago
  •  ...We are hiring an ML Engineer or an AI Engineer to join Proteus in San Francisco/London. Company Description We are building a Biological...  ...quickly matter more Wants to leave the world better than they found it Biology experience is valuable, but not required. We care more... 

    Proteus-Bio

    San Francisco, CA
    1 day ago
  •  ...About Loop Loop AI is a San Francisco–based tech company founded in 2022. We provide a Delivery Intelligence Platform for data-driven...  ...first restaurants. About The Role We are looking for a Founding Engineer with 4+ years of backend engineering experience to join our fast... 
    Temporary work

    Loop AI - Delivery Intelligence Platform

    San Francisco, CA
    4 days ago
  • $175k - $225k

     ...About the Role Join a fast-moving, early-stage consumer AI startup as a Founding Engineer — a rare, high-impact position working directly alongside the founder. This is a true 1-of-1 opportunity to shape both the product and engineering culture from the ground up.... 
    Remote work
    Visa sponsorship

    Clera

    San Francisco, CA
    4 days ago
  •  ...premiere Talent Partner and Executive Search Solution. We were founded on the fact that technical recruiting is most fruitful via partnership...  ...Stay hungry. Stay HMBL. We're seeking a Founding Software Engineer for an early staged AI & LLM startup based in San Francisco.... 

    HMBL

    San Francisco, CA
    4 days ago
  •  ...About The Role Hiring a full-stack/founding engineer to join our team and focused on product engineering and shipping new features Things You'll Be Working On Architecting and implementing full-stack product features in Typescript/React/Node is the core of what... 
    Work at office

    Replo

    San Francisco, CA
    5 days ago
  • $350k

     ...conversations consistent and personalized across all channels. Reverse engineering legacy healthcare systems that don't have public APIs to...  ...who desperately need them. We're looking for exceptional founding engineers to help us realize this ambition. If you're an... 
    Contract work
    Night shift

    Alleviate Health Inc

    San Francisco, CA
    3 days ago
  •  ...strategic operators. Now we need to build fast enough to match customer demand. The Role This is not a typical engineering role. You'll be our founding engineer, with an outsized role in how the product, company, and engineering culture evolve. You'll write code,... 

    pear.ai

    San Francisco, CA
    4 days ago
  • $150k - $250k

     ...Agentmail Engineer Opportunity Location: San Francisco, CA Type: Full-time, on-site We are seeing a surge in market demand as...  ...for your email, it's email for your AI. We're looking for a founding engineer with strong backend and infra instincts to help build... 
    Full time

    Agentmail (yc s25)

    San Francisco, CA
    4 days ago
  • $150k - $250k

     ...The opportunity Hedge is hiring a founding engineer to build the agents that run an insurance company and the infrastructure that lets them scale. You’ll build systems that read messy submissions, chase missing information, navigate carrier requirements, and move accounts... 
    Work at office

    Hedge (YC P26)

    San Francisco, CA
    2 days ago
  • $145k - $175k

     ...Founding GTM Engineer Title of Role: Founding GTM Engineer Location: San Francisco, onsite Company Stage of Funding: Venture-Backed - AI, B2B, Software Development, Enterprise Office Type: Onsite Salary: $145K-$175K Company Description We're... 
    Work at office

    Recruiting from Scratch

    San Francisco, CA
    2 days ago
  • $250k

     ...transferred to us in real time. The company is bootstrapped and founded by a former startup and venture capital attorney. Sixteen...  ...reply rate. About the Role This is the company's first engineering hire, reporting directly to the Founder, who is currently the... 
    Full time
    Casual work
    Work at office
    Immediate start
    Remote work
    Relocation

    Product Pulse

    San Francisco, CA
    1 day ago
  •  ...Join The Founding Engineering Team At Adam We're building the founding engineering team at Adam. At Adam, we're tackling a frontier problem: building a new way to interface with CAD via AI. This demands creativity, deep technical ability, and novel thinking.... 

    adam.ai

    San Francisco, CA
    1 day ago
  •  ...Founding Full-Stack Engineer Opportunity Hi, my name is Gabriel and I'm the founder of Y/n. Y/n is an app where you can create, share, and play interactive stories. Today, 100K+ teenagers spend 3+ hours a day in the app playing characters in text stories of their... 
    Relocation

    Can of Soup

    San Francisco, CA
    4 days ago
  •  ...Second Founding Engineer Opportunity We're hiring a second founding engineer! You'll be team member #5, working closely with co-founders Joseph + Wilbur and our engineering team and you'll have significant ownership over the parts of the product you want to cover. As... 
    Work at office

    Meticulate

    San Francisco, CA
    4 days ago
  • $185k - $215k

     ...gap between referral and care. The result is better patient experiences and health outcomes. Our founding team pairs deep experience investing in health tech with engineering expertise from Meta and we just raised a $2.5M pre-seed led by GreyMatter. About the Role... 
    Work at office
    Flexible hours

    Grey Matter

    San Francisco, CA
    3 days ago
  • $180k

     ...Culture Talent. We're excited to help connect talented professionals with this exceptional team! The Role We're hiring a Founding Engineer to join an early-stage company building AI-powered software and data infrastructure for healthcare organizations operating in... 
    Work experience placement

    People Culture Talent

    San Francisco, CA
    5 days ago
  •  ...Weave At Weave, we’re building the best software for the best engineering teams to move faster, and we want to hire exceptional sales talent...  ...runs engineering at Weave, and before that worked as the founding engineer at Causal. Responsibilities Build pipeline: do whatever... 
    Flexible hours

    Weave, Inc.

    San Francisco, CA
    1 day ago
  •  ...We’re looking for a founding engineer to build the system that runs industrial commerce. Avent is turning the global supply chain into a machine-to-machine system where products are quoted, sourced, and fulfilled at software speed. This is not about building features... 
    Relocation

    Avent (YC S25)

    San Francisco, CA
    2 days ago
  • $150k - $250k

     ...AgentMail is building the identity and communication infrastructure for AI agents, starting with email. We are looking for a Founding Engineer with backend and infra focus to architect systems for agents as the end users. Responsibilities: Design APIs that are... 
    Work experience placement
    Internship

    AgentMail

    San Francisco, CA
    5 days ago
  • tl;dr: Interface is looking for generalist founding engineers (ml, data, full-stack) who are scrappy, push boundaries and have a need to win. We need to work hard and build quick to win. We want people to challenge our ideas and build alternatives. LFG who you are:... 
    Work at office

    Interface

    San Francisco, CA
    3 days ago
  •  ...connections will form the foundation of the agentic internet – and Caylex will be the infrastructure powering it. The Role As a Founding Engineer, you’ll play a central role in shaping both our product and engineering culture. You will: Work full-stack across... 
    Full time
    Work at office

    Caylex

    San Francisco, CA
    1 day ago
  • $160k - $270k

     ...About the Role This is a core infrastructure engineering role at a seed-stage AI infrastructure company building a graph-native context...  ...storage layer, and graph internals, working directly alongside the founding team to make architecture decisions that shape the product for... 
    Full time
    Flexible hours

    Clera

    San Francisco, CA
    1 day ago
  • $160k - $210k

     ...About the job Founding Engineer Founding Engineer Global Placement Firm is conducting a confidential search for Founding Engineers to join a small, high-growth healthcare technology company in San Francisco focused on transforming how speech, occupational,... 
    Full time
    Private practice
    H1b
    Work at office
    Relocation
    Visa sponsorship

    Global Placement Firm

    San Francisco, CA
    3 days ago
  • $150k - $300k

     ...optimize cash, debt, budgeting, expenses, investing, and taxes. Founded in 2025 by a former senior financial-services leader at a...  ...native financial operating system. We are hiring a Founding Engineer to become the company's first technical hire and build the product... 
    Full time
    Contract work
    H1b
    Remote work
    Visa sponsorship

    Raydar Inc

    San Francisco, CA
    1 day ago
  •  ...This is a foundational role: Sim is hiring our first GTM Engineer to build the company's go-to-market and RevOps infrastructure from...  ..., custom internal tools, and data-driven outbound campaigns Found and scale: Set the technical standard and shape the DNA of Sim... 
    Full time
    Work at office
    Immediate start
    Visa sponsorship
    Relocation package

    SIM USA

    San Francisco, CA
    3 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Founding Engineer. Be the first to apply!