AI Engineer Code Summit · Thu 12 Nov 2026 · Mainstage

A company built around the agent

Quinn Slack spun a 21-person team out of a 200-person enterprise vendor under a hiring freeze—replacing Jira, PR gates, and 96% of SaaS with shared agent threads, one weekly meeting, and a closed customer bug loop past $100M ARR.

Quinn Slack, Amp · 19 min · Links and further reading · Video
The break

From a 200-person org to a 21-person spin-out

The break began in January 2025 at the Frankfurt Airport with teammate Thorsten Ball, watching an early pre-Claude-Code agent change a background color—and realizing the feedback loop changed everything:

“When I saw an agent actually work for the first time. It ran commands. It looked at itself. It gave itself some feedback loops. That blew my mind”00:01:31

Even as CEO of Sourcegraph, roughly 200 people across engineering and go-to-market, Slack found he could not simply declare mandatory PR reviews dead inside an established enterprise vendor. He first carved out a small group that skipped sales calls and executive meetings, then spun the company out completely—where months of legal friction blocked hiring and options, forcing the team to stay at 21 people:

“And that skin in the game that you get when AI makes it so you can operate with way less people. Skin in the game—it's like this spiritual thing for the soul. Of great people, it makes them better at everything they do.”00:05:51
From the notes: “They just started building Amp and dropped Sourcegraph.” and “This is a good example of how an organization works in the age of AI.” The reading: authority on a legacy org chart was not enough—spinning out under a hiring freeze created the forcing function to reorganize around the agent.

Evidence: transcript 00:01:31, 00:02:39, 00:05:51

The market shift

Enterprise checklists vs. frontier love

By early 2025, the classic startup sequence—land early adopters, check every median enterprise procurement box, hire a sales army—had turned lethal:

“To make the median enterprise buyer happy, your product was going to go obsolete in like three months. And the whole game had to change. Nothing mattered other than making it so that the people at these other companies love your product”00:03:52

Developers constantly ask how one coding agent differs from Codex or Claude Code. Slack refuses to pretend a three-bullet feature list is a moat: any capability one lab proves—cloud orbs, multiplayer threads—competitors can match quickly. What cannot be copied overnight is removing the corporate apparatus between builders and users:

“Having a whole product management team, a design team, an engineering team that's so disconnected from the actual customers, a whole company apparatus. If that's the best way that you can market a product, it's really tough.”00:03:52
From the notes: “Enterprise-ready vs frontier.”, “It's hard to answer how things are different in an intellectually honest way.”, and “A lot of this is that there's no real kind of differentiation.” The reading: echoes Ramp’s Inspect thesis—when model harnesses converge, organizational speed and direct customer contact are the differentiation.

Evidence: transcript 00:03:52

Operating model

21 people to $100M ARR: follow your energy

With no room to hire, the team stripped out every external coordination system and moved work, discussion, and debugging into shared multiplayer threads fed by voice dictation:

“We got rid of all of the other tools. We got rid of all of the other things you got to check. Obviously, not Jira. No task tracking. We don't have a support system. Everything we do in the agent.”00:08:04

Pushing straight to main stays safe because changes are tiny, backed by shadow systems and visual frame-by-frame proof. Without PMs, sprint points, or departments, everyone talks to customers—an SDR two years out of college ships ACH wire billing; teammates tell buyers the blunt truth instead of pitching for commissions. Everyone owns roughly 1/21st of the company:

“We have one meeting per week, and then everything else. The guidance is follow your energy.”00:15:58
“On a dollar in, dollar out, you know, basis, that's 40 to 50 times more efficient than old-fashioned companies.”00:15:58
From the notes: “They stayed at 21 people up to $100M ARR.” and “"Follow your energy."” The reading: pairs directly with Cognition’s 40× PRs on 2.7× headcount—removing handoff layers multiplies output once agents absorb implementation and verification.

Evidence: transcript 00:08:04, 00:09:54, 00:12:35, 00:15:58

Close the loop

Sweeping the logs for the 17 silent victims

How does an AI-built codebase avoid becoming fragile “vibe-coded” junk? Slack walks through their automated customer bug loop. When a user reports a bug, the agent fixes it and thanks them with free credits—and then does the step no human PM or support queue would ever have time to do:

“So you find the seventeen other people that hit that same obscure error. They remember it probably, and you proactively tell them.”00:10:58

Getting an email out of nowhere—“we saw you hit an error yesterday, we fixed it, here’s $10”—turns customer frustration into lasting loyalty:

“It's a self-perpetuating cycle where then people who get that know that you care, and they're going to send more feedback in the future.”00:10:58
From the notes: “The feedback mechanism is pretty amazing.” The reading: alongside Lovable’s outer business loop, this turns production telemetry directly into product quality and customer trust without ticket triage.

Evidence: transcript 00:10:58

Headless SaaS

Custom tools—and building the 4% of Salesforce

As the team wired twelve internal connectors and MCP servers—CRM, Bug reports, Admin, Hiring, Gmail & Calendar, Slack, Grafana, Buildkite, App Store & Play, GitHub & Linear, QR Offer cards, and CustomInk merch—into every agent thread, employees stopped opening third-party web apps altogether:

“The more that we start using these tools, where just the agent is using it directly, we don't even need the software product on the other end, and it's. A very small number of products that we think actually have sticking power for us.”00:13:16

People used to mock the idea of vibe-coding Salesforce from scratch because nobody wants all of Salesforce. You only want the 2% you actually use, plus 2% deep integration with your own stack:

“Actually, would you code the two percent subset of Salesforce features? And then another two percent that integrate with the rest of your stack in the most perfect way because the agent is so good at that.”00:13:16
From the notes: “Once it's plugged into the tools, we don't need to use the tools.” and “They use CustomInk for team merch; we should look into that.” The reading: when the agent thread is the primary workspace, “softer-than-software mini apps” beat waiting on a SaaS vendor’s Q4 roadmap.

Evidence: transcript 00:13:16

The challenge

Get out of the cage

If tiny, high-equity teams stop buying bloated ten-year SaaS contracts with $100K sales commissions, traditional enterprise software starts to fracture:

“Once you have seen how the new kind of companies that are two orders of magnitude smaller. Where everyone can do everything, where everyone has skin in the game, then you know you don't want anything else.”00:14:45

Slack closes with a blunt warning for engineers sitting in internal Slack gossip channels complaining that leadership refuses to adapt:

“Let agents really shape how you work, and get to a company that's willing to be shaped by the agents.”00:17:57
  • Spin out or insulate to break legacy habits: 21 co-owners under a hiring freeze replaced Jira, PR queues, and departments with shared threads, one weekly meeting, and 40–50× capital efficiency past $100M ARR (00:05:51, 00:08:04, 00:15:58).
  • Close the loop on customer pain: agents fix reported bugs, sweep logs for the 17 silent victims, and credit them proactively—turning speed into quality (00:10:58).
  • Build the 4% you need: once agents drive plugins and MCP servers directly, custom mini-apps replace bloated SaaS seats (00:13:16, 00:14:45).
Read alongside

Evidence: transcript 00:14:45, 00:17:57