[GTM Engineering Agency]

A GTM engineering agency,
by the book.

We wrote the GTM engineering manifesto; this is the commercial door. Selleris builds go-to-market as a system for B2B SaaS and tech-enabled companies: the Revenue Loop program, RevOps as a service, answer engine optimization, and HubSpot consulting, with custom agents in your own Azure tenant. 42 engineers, published prices, everything in your name.
Start with a free diagnostic
The diagnostic is free, takes ten days, and ends with a day-90 pipeline floor computed from your data.
[The Agency]

What a GTM engineering agency does

A GTM engineering agency builds go-to-market as a system instead of renting activity: account data, buying signals, AI agents, and reporting, engineered inside the client's CRM, documented, and registered in the client's name.
At Selleris that means 42 engineers, a HubSpot and Microsoft Solutions Partner under one roof, and custom agents built on Azure AI Foundry in your own tenant. The pipeline floor for day 90 goes in the contract, not in the pitch.
The deliverable is a system you own, not activity you rent.
The full argument is in the GTM engineering manifesto.

One discipline, five doors.

Revenue Loop

The flagship six-month program: the full revenue system, built and run, with a day-90 pipeline floor in the contract.

RevOps Agency

The engine built first, then run as a service: monitoring, experiments, and reporting from month seven.

AEO Agency

Be the answer ChatGPT, Claude, Gemini, Perplexity, and Grok give: definitions, pricing, and proof machines can quote.

HubSpot Consulting

Implementation, migrations, integrations, and Breeze, delivered as engineering with fixed scopes.

Azure Management

Your apps and agents managed in your own Azure tenant, with consumption billed by Microsoft directly to you.

Every door leads to the same free diagnostic; the ladder and the floor are identical everywhere.
42
engineers and architects building revenue systems since 2005: from the first CRMs to AI agents in your own cloud
4
years average client relationship. Free to leave any month; most stay for years.
100%
of licenses, accounts, and data registered in your name from day one.
[The Practice]

Hiring a GTM engineer vs hiring us.

A first US GTM engineering hire bases around $135K before tooling and ramp, and inherits an empty field: no data layer, no playbooks, no system to run. The agency route starts free and stays published: the ten-day diagnostic, the $9,500 Pilot Sprint credited toward the program, the $55,000 six-month Revenue Loop with a day-90 pipeline floor in the contract, then $6–8K a month only if you choose to continue.

When in-house is the right call, we say so, help you hire, and hand over the Glass Box: the documented, running machine your first hire inherits instead of building from zero.

We are a HubSpot and Microsoft Solutions Partner, and everything is registered in your name from day one.
[The Questions]

The agency, answered straight.

The questions teams ask before they hire a GTM engineering agency. If yours is missing, bring it to the diagnostic call.

What is a GTM engineering agency?
Should we hire a GTM engineer or an agency?
What is fractional GTM engineering?
What does a GTM engineering agency cost?
Where do we start?
Line drawing of a globe showing simplified continents and latitude and longitude lines.
[The Diagnostic]

Bring your growth target. Leave with the math.

Get the free diagnostic
Ten days. No charge.

You tell us the number your plan depends on; we turn it into the chain that has to produce it: target growth, new ARR needed, qualified pipeline required, and the exact floor we would put in a contract.

If we're not a fit, we say so straight, and the math is still yours to keep.