--- title: "GTM Engineering Agency for Seed to Series C | OneGTM" description: "OneGTM is a founder-led GTM engineering agency. Garrett Wolfe, Unify employee #9, builds outbound, signal, CRM, and AI systems for seed to Series C teams." url: https://getaob.com/gtm-engineering-agency --- # GTM engineering agency for seed to Series C teams OneGTM is a founder-led **GTM engineering agency**. [Garrett Wolfe](https://garrettawolfe.com), an early Unify employee (#9) who helped grow Unify's ARR from $400K to $6M+, builds custom outbound, signal, CRM, and AI systems for seed to Series C teams. The work uses Clay, Claude Code, and Attio. OneGTM is a Clay Artisan Solutions Partner and an OutboundSync Agency Partner. By [Garrett Wolfe](https://garrettawolfe.com), founder of OneGTM. Updated November 2, 2026. Key takeaways - Founder-led by Garrett Wolfe, Unify employee #9, who helped grow Unify's ARR from $400K to $6M+. - Clay Artisan Solutions Partner and OutboundSync Agency Partner. - Custom outbound, signal, CRM, and AI systems for seed to Series C teams, built with Clay, Claude Code, and Attio. - [Antimetal](https://getaob.com/antimetal-case-study): $2.57M in pipeline from 17 automated outbound deals. - [Coastal Recruiting](https://getaob.com/coastal-recruiting-case-study): 4.7x more accepted intros. - [Green Dock Partners](https://getaob.com/green-dock-case-study): a daily digest of industrial site closures, with no deal outcome claimed. ## What is a GTM engineering agency? A GTM engineering agency builds the outbound, signal, CRM, and AI systems a revenue team runs. OneGTM does that work founder-led, for seed to Series C teams, with Clay, Claude Code, and Attio. Garrett Wolfe leads it. He was employee #9 at Unify and helped grow Unify's ARR from $400K to $6M+. OneGTM is a Clay Artisan Solutions Partner and an OutboundSync Agency Partner. ## What OneGTM builds ### Outbound systems Custom outbound for seed to Series C teams, built with Clay and Claude Code and tied to the CRM in Attio. ### Signal systems Signal systems that feed outbound, built with Clay and Claude Code alongside the CRM. ### CRM systems CRM systems in Attio for the team that runs the outbound, the signals, and the AI. ### AI systems AI systems built with Claude Code, used inside the outbound, signal, and CRM work. Sibling pages go deeper on one slice: the [Clay agency](https://getaob.com/clay-agency) page, the [outbound agency](https://getaob.com/outbound-agency) page, and the [RevOps agency](https://getaob.com/revops-agency) page. The full list of systems is on [what OneGTM builds](https://getaob.com/systems). Comparing agencies? Tell me what you need built and I'll scope it on a call. The person on that call is the person who builds it. Book a call with Garrett ## Published results OneGTM's published case studies are three. [Antimetal](https://getaob.com/antimetal-case-study): $2.57M in pipeline from 17 automated outbound deals. [Coastal Recruiting](https://getaob.com/coastal-recruiting-case-study): 4.7x more accepted intros. [Green Dock Partners](https://getaob.com/green-dock-case-study): a daily digest of industrial site closures, with no deal outcome claimed. ### [Antimetal](https://getaob.com/antimetal-case-study) $2.57M in pipeline from 17 automated outbound deals. The writeup is the Antimetal case study. ### [Coastal Recruiting](https://getaob.com/coastal-recruiting-case-study) 4.7x more accepted intros. The writeup is the Coastal Recruiting case study. ### [Green Dock Partners](https://getaob.com/green-dock-case-study) A daily digest of industrial site closures, with no deal outcome claimed. The writeup is the Green Dock Partners case study. ## Who this is for Seed to Series C teams that want custom outbound, signal, CRM, and AI systems. The stack OneGTM builds with is Clay, Claude Code, and Attio. If you are comparing a packaged AI SDR with a system your team runs, the [AI SDR alternatives](https://getaob.com/ai-sdr-alternatives) page is the short version, with the same published case studies. ## GTM engineering agency FAQ ### What is a GTM engineering agency? A GTM engineering agency builds the outbound, signal, CRM, and AI systems a revenue team runs. OneGTM is a founder-led GTM engineering agency for seed to Series C teams. Garrett Wolfe, an early Unify employee (#9) who helped grow Unify's ARR from $400K to $6M+, leads the work. OneGTM is a Clay Artisan Solutions Partner and an OutboundSync Agency Partner, and builds with Clay, Claude Code, and Attio. ### Who runs OneGTM? Garrett Wolfe, founder of OneGTM. He was an early employee at Unify (#9) and helped grow Unify's ARR from $400K to $6M+. OneGTM is a Clay Artisan Solutions Partner and an OutboundSync Agency Partner. ### What does OneGTM build? Custom outbound, signal, CRM, and AI systems for seed to Series C teams, using Clay, Claude Code, and Attio. ### What results has OneGTM published? Antimetal: $2.57M in pipeline from 17 automated outbound deals. Coastal Recruiting: 4.7x more accepted intros. Green Dock Partners: a daily digest of industrial site closures, with no deal outcome claimed. All three writeups are on this site. ### Is OneGTM a Clay partner? Yes. OneGTM is a Clay Artisan Solutions Partner and an OutboundSync Agency Partner. Want a GTM engineering agency that builds the system with you? ## Related - [GTM engineering services](https://getaob.com/systems): Everything OneGTM builds, from CRM enrichment to signal-based outbound. - [Clay agency and Clay consultant](https://getaob.com/clay-agency): Clay tables, enrichment waterfalls, and scoring from a Clay Artisan Solutions Partner. - [Signal-based outbound agency](https://getaob.com/outbound-agency): Cold email and LinkedIn systems triggered by real buying signals. - [RevOps agency and RevOps consultant](https://getaob.com/revops-agency): CRM architecture, routing, and reporting your team can trust, built hands-on. - [Antimetal case study](https://getaob.com/antimetal-case-study): 17 Automated Outbound deals and $2.57M in pipeline from the signal system OneGTM built and handed over. - [Coastal Recruiting case study](https://getaob.com/coastal-recruiting-case-study): How a recruiting firm grew recruiter-accepted candidate intros 4.7x in four months. - [Green Dock Partners case study](https://getaob.com/green-dock-case-study): A tracker that watches public closure news and sends an industrial real estate investor a daily digest. No deal outcome claimed. - [AI SDR alternatives](https://getaob.com/ai-sdr-alternatives): Custom signal-driven systems to use instead of a packaged AI SDR, with the same published proof. - [GTM engineering guide](https://getaob.com/gtm-engineering): What GTM engineering is, how it differs from RevOps, the stack, five core workflows, and how to start. ## Work with a GTM engineering agency Tell me what you're building. I reply the same day. Book a call at [getaob.com/#contact](https://getaob.com/#contact) or email [team@getaob.com](mailto:team@getaob.com).