Founding Engineering & Product Leader

About the role

We're looking for our senior engineering and product leader, a founding-team hire who will take Yolk safely post launch and build the next stage of the product, and the team that comes with it.

We're now bringing in the senior leader who will set the engineering bar, decide when we're ready to launch, and grow both the platform and the team from there with a level of ownership only the earliest team members ever get.

This role carries more weight than most engineering jobs. The person who gets this right will have real authority to do it properly, and will help shape what Yolk.coach becomes.

A word of honesty

This is a founding-team role at an early-stage company, which means it is hands-on. You will get into the code. You will run the QA passes yourself. You will test a video session on a bad connection at 9pm because a launch depends on it. You will make calls with incomplete information and live with them. You'll lead an engineering team, but you'll lead by doing, not just directing. If you want a purely strategic seat with people beneath you to execute, this is the wrong role. If you want to own the hardest, most consequential technical problems in the company and see them through, read on.

What you'll do

• Reliability of realtime AI agents, audio and chat sessions on a user's old laptop and a sales rep's poor wifi, not just a developer's machine.
• Leading and growing the engineering and product team.
• Security and privacy of sensitive sales conversation data — the controls that keep us defensible, and an independent security review before we go live.
• End-to-end quality of the booking-and-payments flow, including the failure paths most teams skip.
• The product direction post-launch — what we build next, in what order, and why.

What we're looking for

• 8+ years building software, with senior or lead engineering experience and you've carried real product responsibility, not just executed someone else's spec.
• Hands-on operator first, leader second: you lead through doing.
• You've shipped a B2B consumer-facing product that impacts clients' revenue, to production and through real users.
• You work directly and candidly with a non-technical founder.
• You've worked somewhere where the product and user experience are real. You're not learning why it matters here.
• You can run a security review and stand up the controls behind it yourself, not just brief someone else to.
• Strong communicator who can translate technical decisions for non-technical stakeholders.
• You don't wait for a PM to hand you a roadmap — you proactively connect data capabilities to business outcomes.

Nice to have

• You've been part of an early-stage or founding team before and know how to operate without much process.
• You have experience developing consumer-grade B2B and understand what product polish means to users.

What success looks like — first weeks

• Own and close out the post-launch readiness so we can scale; get Yolk going in its first market with confidence, not crossed fingers.
• Refine the AI and agent architecture to deliver powerful, personalized solutions for any company and representative.
• Prove the full AI signal-to-won-deal flow end-to-end, including every failure path, across real sales calls and real deals.

What success looks like — first 6–12 months

• Turn a launch-phase-built product into a maintainable, well-owned codebase with a team to match.
• Establish a sane delivery cadence and the engineering and product processes we'll scale on.
• Set the post-launch roadmap and start shipping against it.

Why this role matters

In a category built on trust, the technical decisions are the business. Whether a session holds, whether the platform feels solid — that's what earns the trust everything else depends on. As a founding-team member you'll build the foundation Yolk grows on, and shape the company from its first days live. This is a rare chance to own the technical heart of a company at the moment it matters most.

What we offer

A founding-team seat working directly with the founder, with real authority and real ownership of the problems that matter most. A product that's already built and a launch to drive, not a blank page. Competitive cash compensation plus equity, reflecting the seniority and ownership of the role.

About Yolk

A sales rep tracks nine things at once on a live call. Human working memory holds four. Every AI sales tool tries to add more dashboards on top. We subtract — Yolk's AI coach works inside the live call, surfacing the one right thing to say at the moment it matters, then turns what broke down on the call into targeted AI roleplay practice afterward.

The facts: launched end of May 2026. Hundreds of salespeople coached in the first weeks, across several live pilots and paying clients. Thousands of real sales calls already analyzed. Backed by investors in Anthropic and Groq. SOC 2 compliant, 4 patents in core AI methods.