Before you sign with an agency for a GTM engineer, ask five things: who tests candidates on your actual stack, whether that test runs on your data, who owns what the hire builds, what the single all-in monthly number is, and what the replacement covers in writing. My view is that everything else on the long checklists is secondary for this role.
I read the lists that rank for this search. They're fine if you're hiring a support team. One runs to 30 questions and covers power outages, ISO certification and how staff get to work in bad weather. Not one of the top results I read asks who owns the workflows and tool accounts once the hire leaves. For a person whose whole job is building systems inside your CRM, that's the question that decides what you actually keep.
Ask who tests for Clay, and how
A general screen on English and years of experience won't tell you much here, because the job is narrow. Of the 98 GTM engineer job posts we tracked between 3 May and 5 October 2026, Clay was named in 61%, HubSpot in 55%, Salesforce in 43% and n8n in 34%. Building things came up in 89% and automation in 78%.
So ask to see the actual test, on paper. You want to see a task that touches the tools you run, and you want to know who marks it. If the answer is a recruiter with a rubric, the person checking the Clay table may never have built one, so ask who it is.
A Programming Insider roundup of remote staffing agencies suggests asking for pass rates at each stage of vetting, and it's a good question. An agency that can't tell you how many people fail the skills test isn't running a hard one, in my experience.
Get the build test run on your data
Sample data from the agency mostly shows that a candidate can follow instructions, and your CRM will be messier than anything they hand out. Ask whether you can set the final task yourself, on a few dozen real accounts, and whether you get to read the work before you commit.
What I look for is the boring stuff, like whether they deduped before spending enrichment credits, and whether they flagged the records that came back empty without being asked. I've written up the full test we'd run, and it works the same whether an agency is involved or not.
If the agency won't let you meet candidates or set a task before signing, walk away. That's pretty much the whole point of using one.
Ask who owns the work, in writing
This is the gap in every list I read, and for GTM roles it matters more than price. Your hire will build Clay tables, n8n workflows, Zapier zaps, scripts and HubSpot properties. In 18% of the GTM posts we tracked over those five months the work mentioned APIs or webhooks, and integrations came up in 37%. That's a lot of plumbing to lose.
US copyright law doesn't hand you that work by default when the person isn't your employee. The Copyright Office's circular on works made for hire says commissioned work only counts as made for hire if it falls into one of nine listed categories and there's a written agreement signed by all parties. Outside that, the author is ordinarily the person who created it. I'm not a lawyer, and you should have yours read the contract. But the safe assumption is that you need an explicit assignment of IP to you, and you should ask the agency where that clause is.
Then ask the practical version. Whose login creates the Clay workspace and the API keys? The answer you want is yours, every time, with the hire added as a user. If the agency's people build in accounts the agency controls, you're renting your own pipeline. I've covered how to set up access and offboarding properly, including the tokens people forget to take back.
Can you hire the person directly later, and what does that cost? Get the answer in the contract before month one, because month twelve is a bad time to find out. And check that the person is full-time and only on your work, not split across clients.
Get one monthly number and the replacement terms
Ask for a single all-in monthly cost for one full-time hire, then ask what gets added later. Setup fees, equipment, tool seats, a markup on overtime. The Programming Insider piece says replacement guarantees in the market typically run 30 to 90 days, with some extended to six months as a paid add-on. That's their read of the market, so check it against the contract in front of you. Ask how long it lasts and what voids it.
Then put that number next to the full cost of a US hire. The 23 GTM posts in our data that printed a salary had a median midpoint of $150,000 base. It's a small sample, so treat it as directional. BLS figures for June 2026 put benefits at 30.0% of private industry compensation: $14.07 an hour on top of $32.82 in wages. If benefits are 30% of the total package, a $150,000 base implies about $214,000 a year, roughly $17,900 a month.
We place GTM engineers full-time on your team, in your tools, from $4,000 a month all-in, with a free replacement if the fit is wrong. Ask us the same questions.
The list I'd take into the first call with any agency:
- Who designs and marks the skills test, and can I see it?
- What share of candidates pass each stage?
- Can I set the final task on a copy of my own data?
- Do I meet and approve the candidate before signing?
- Where in the contract is the IP assignment to my company?
- Whose accounts will the hire build in?
- Is the hire full-time and only on my work?
- What is the single all-in monthly cost, and what can be added later?
- How long is the replacement window, what voids it, and who pays for the second search?
- What does it cost to hire the person directly later?
- What's the notice period if I end the arrangement?
When an agency is the wrong call
If you already have a recruiter in-house who knows what a good Clay build looks like, hiring direct through an employer of record is worth pricing out, and you keep the relationship yourself. The same Programming Insider piece lists employer of record fees from about $599 a month per head, though you'd still be doing all the screening. And if the role is your first GTM hire and they'll end up building a team, my read is that you should pay US rates for someone local who can sit in pipeline reviews, because nobody on your side can check their work yet.
An agency earns its fee on the screening and the replacement. If it can't show you a hard test or put the IP clause in writing, you're paying for a shortlist you could have built on LinkedIn in an afternoon.