Guide / GTM Engineering

GTM engineering agency vs in-house: how to decide

I run a GTM engineering agency. So treat what follows with the appropriate scepticism. I have tried to write this guide the way I would want it written if I were sitting on the other side of the table: honest about where in-house wins, honest about where an agency wins, and clear about the hybrid that most companies past series A end up with.

The real question

The agency vs in-house question is usually framed as a cost question. It is not. It is a question about ramp time, hiring risk, pattern recognition, and where the institutional knowledge ends up. Cost is the easiest line item, and the one people usually get wrong in both directions.

Cost, honestly

In orders of magnitude, an in-house GTM engineer in Western Europe or North America runs somewhere between a senior SDR and a senior product manager on total cost. On top of that comes the stack: an enrichment surface like usegrit.io or Clay, sending infrastructure, signal sources, models, CRM. At small scale the tools are low four figures a month. At larger scale they are not.

A reputable agency engagement typically lands in a similar order of magnitude per month, sometimes a bit more, sometimes less. Tools are usually included. What you are paying for, on top of the work, is the time you do not spend hiring and the pattern recognition the team carries from other clients.

The honest comparison is not "agency is more expensive". It is "agency is roughly the same cash burn, with a different risk and timeline profile".

Ramp time

In-house ramp is real. You write a job spec for a role most candidates have never held. You interview for skills that are hard to test in a 45-minute call. You make an offer. You wait a notice period. Then the person ramps for one or two quarters before they ship anything that compounds. From decision to first working workflow, six to nine months is a normal range.

A working agency ships a first workflow inside a few weeks. The reason is not heroics, it is reuse. We have a stack already set up, a library of workflow patterns, prompts that have already been red-teamed across other clients. None of that is magic, it is just amortised work.

If your reason to start is urgent, this gap matters more than anything else on the list. If you have time and you are building for a five-year horizon, it matters less.

When in-house wins

There are three situations where I would tell a founder to hire in-house, even at the cost of waiting two quarters.

1. Long horizon and big team. If you plan to run this motion for years and the team will grow past one or two GTM engineers, the institutional knowledge needs to live in your company. Agencies are good leverage, they are bad long-term knowledge stores.
2. Product-led motion with deep product signals. When the highest-value signals are inside your product (events, integrations, usage milestones), the GTM engineer needs to live close to product and engineering. That is hard to do as an external partner.
3. Industry where the moat is internal data. If your edge is a proprietary data graph or a private model, you want every workflow built around it to be built by people who are on your payroll and signed your NDA on day one.

When an agency wins

And the situations where I would suggest an agency, even biased as I am.

1. Speed matters more than ownership right now. You need pipeline in a quarter, not three. You will deal with the long-term shape later.
2. You have not run this motion before. Hiring a senior person to build something neither of you has built is expensive in time and morale. An agency lets you see the shape of the work before you commit to the org chart.
3. Multi-client pattern recognition is worth more than your specifics. If your problem looks like problems we have seen at a dozen other companies in adjacent verticals, you are paying us partly for the times we already learned the expensive lesson.
4. You do not want to carry the hiring risk. A bad in-house hire in a role this senior costs more than a year of agency work. If you are not sure you can hire well, do not hire yet.

The hybrid that usually wins

Past series A, the answer most of our long-term clients land on is hybrid. One in-house person owns strategy, ICP, messaging and the relationship with sales. An external team owns the build and run of the workflows. After 12 to 18 months, more of the work transitions in-house as the internal team grows.

The reason this works is that it separates two jobs that look similar but are not. Owning the GTM thesis is a strategy job that has to live with the company. Building the workflows that execute the thesis is an operational job that benefits from outside reps and a wider toolkit. You can buy the second one and keep the first.

How I think about it

For full transparency, my brother and I run Meaningful Sales together. The thing that has changed for us in the last two years is that the agency model itself is different than it used to be. Back in 2014 when I started RightHello, the model was bodies: people doing list-building, drafting and sending at volume. Today the model is agents doing most of the work, with humans on strategy and on the conversations that matter. Same shape, different physics. That is the agency you should compare to in-house, not the body-shop version from a decade ago.

If you want the framing for the role itself, read what a GTM engineer does before you write your in-house job spec. If you want to see what the work looks like when it ships, the case studies are the most concrete view we publish, including ones with software houses and SaaS clients where the hybrid model is in production today.

And if you want to talk through your specific situation, we are happy to do that. No pitch needed.