AI Agents for B2B Sales

Founding Engineer

$125K - $150K•0.75% - 1.50%•San Francisco, CA, US / Remote (IN; US)

Job type

Full-time

Role

Engineering, Full stack

Experience

Any (new grads ok)

Visa

Will sponsor

Skills

React, TypeScript, PostgreSQL, Next.js

Connect directly with founders of the best YC-funded startups.

Apply to role ›

About the role

We’re looking for a Founding Engineer to help build the core systems that power Questom.

This is not a framework-specialist role. It’s not about perfect abstractions on day one. It is about systems thinking, ownership, and the ability to stitch together complex infrastructure into something that works — fast.

You’ll be one of a very small group shaping not just the product, but how the company builds.

What You’ll Do

Build systems that connect everything

• Design and build high-performance systems that connect:

• Communication platforms (voice, SMS, email, chat)

• Agentic workflows

• External tools like CRMs and internal APIs

• Stitch together APIs, workflows, and agents into cohesive systems that actually run in production

• Think deeply about how these systems scale across many customers with different data sources and configurations

Build agentic workflows

• Create workflows where agents:

• Handle live conversations

• Pull context from systems like Salesforce

• Log outcomes in tools like HubSpot

• Take real actions on behalf of users

• Focus on giving agents the right information at the right time and designing systems that make this repeatable across customers

Turn ambiguity into working software

• Start from half-baked ideas, rough customer conversations, or incomplete requirements
• Ship a 90% working solution quickly
• Iterate toward something more general, scalable, and high quality

Own what you build

• Take end-to-end ownership: design → build → ship → improve
• Break things thoughtfully — and fix them yourself
• Make judgment calls without needing constant guidance

What Success Looks Like

In the first 30 days

• Sit in a few customer conversations
• Identify a real pain point
• Propose a product or feature to solve it
• Build and ship an end-to-end solution that delivers real value

In the first 90 days

• Take learnings from multiple customer builds
• Start shaping more general-purpose systems
• Help lay the foundation for a platform that can scale to many customers — and eventually very large companies

How We Build

• We use modern tools aggressively and expect you to learn quickly:

• Agentic workflow frameworks

• Communication infrastructure

• AI agent SDKs

• We rely heavily on coding agents and automation — curiosity and systems understanding matter more than syntax mastery

• We build fast, then make it better

• We’re opinionated, iterative, and comfortable changing direction when a simpler solution delivers customer value

What Matters (and What Doesn’t)

What matters a lot

• Systems thinking
• Ownership
• Comfort with ambiguity
• Curiosity and fast learning
• Product taste (what’s worth building vs not)
• Respect for how other people think

What doesn’t matter much

• Deep expertise in any single framework or language
• Pixel-perfect UI work
• Writing perfect SQL by hand
• Knowing our exact stack on day one

If you understand how modern web systems, APIs, workflows, and agents fit together — and you’re excited to learn the rest — you’re in great shape.

How We Work

• Fast, opinionated, iterative
• Disagreements are encouraged and happen openly
• We build first, think later — but we do think
• You won’t be micromanaged
• You will be trusted with real responsibility early

Who You Are

You likely describe yourself as:

• Extremely curious
• Highly independent
• Comfortable operating without a map
• Someone who enjoys connecting dots across systems
• High-EQ and collaborative

You want to be deeply involved — not just shipping tickets, but helping build a company.

Who Should Not Apply

• If you need clear specs and guardrails to do your best work
• If you prefer working in isolation
• If you’re uncomfortable with constant ambiguity
• If you don’t enjoy discussing ideas, systems, and tradeoffs with a small team
• If you want a narrow role instead of broad ownership

If reading this makes you feel slightly intimidated but very excited, that’s intentional — and probably a good sign.

About Questom

Questom is building the first true marriage of an AI communication platform and a state-of-the-art agentic workflow orchestration system.

Our agents don’t just talk to customers across voice, SMS, email, and chat, they do work in the same tools their team uses: CRMs, internal systems, and business software. They reason, take actions, and move processes forward.

We believe the future of sales (and work more broadly) is about building high-quality relationships and delivering real value — not grinding through inboxes, follow-ups, and manual coordination. Questom removes the grunt work so teams only engage where it actually matters.

We already have customers. We ship fast. We iterate in production. And we’re building toward systems that can support companies at massive scale.