Growth GTM Engineering for B2B teams

Outbound systems that sprint, not crawl.

You get the whole system behind your pipeline: the right accounts, the signals that say they're ready, copy written to their situation, and the Clay and AI workflows that run it every day. Your team just takes the calls.

Book an outbound review → See the system

Outbound built for Grant Engineering, GreenFire, Parasol, Linkd and Hire Spartan.

Your outbound system Live
  1. 01
    Map your marketYour TAM, ICP and who signs off
    Research
  2. 02
    Find your signalsWhat tells you an account is ready
    Clay + AI
  3. 03
    Score and tierOnly the accounts worth your time
    Clay
  4. 04
    Write to the signalCopy built from what the data shows
    Copy
  5. 05
    Book your callsEmail and LinkedIn, tuned every week
    Instantly · HeyReach
215 calls bookedfor Grant Engineering

Companies GathX has built outbound for

Grant EngineeringGreenFire UCSParasolLinkdHire SpartanCloudBeesTestLauncherSynergERPHennessey DigitalCrucial PointOutfin GroupAngkor Grace
The real problem

You don't have a GTM problem. You have a clarity and execution problem.

More activity won't fix your outbound. Better systems and faster learning will.

01

Your lists are built on job titles

Everyone with the right title gets the same email, whether or not their company has any reason to buy right now.

02

Your copy could go to anyone

When there's no signal in the list, your copy can't say anything specific. So your prospects don't reply.

03

Your tools never got joined up

You're paying for Clay, a sequencer, a CRM and a few AI tools, and none of them talk to each other.

Anyone can send outbound. The hard part is knowing who's worth sending to.

The system, end to end

Every part of your outbound, built and connected.

Your raw market becomes a qualified list. Your list becomes messaging. Your messaging goes out on its own, and every reply files itself in your CRM.

1

Market map

  • Your TAM and ICP
  • Who signs off, in what order
  • Best and worst customers
2

Sourcing

  • Sales Navigator + Apollo
  • Public registers and licence lists
  • Every company website scraped
3

Qualification

  • AI reads what each firm really does
  • Fit tiers + priority band
  • Signals that say "now"

In one recent build: ~50,000 firms → 1,366 priority accounts.

4

Contacts

  • Economic buyer, champion, user
  • Emails found + double-verified
  • Live deals and customers excluded
Your outbound systemBuilt, connected and run for you
5

Messaging

  • Copy by persona, not just company
  • First line from a real signal
  • Multi-touch sequences
6

Sending

  • Separate domains, never your main one
  • Inboxes warmed before day one
  • Email first, LinkedIn as fallback
7

Reply loop + CRM

  • AI sorts every reply
  • Instant alert to your team
  • Deal created in your CRM
8

Learn + scale

  • Weekly report on positive replies
  • Cut what's dead, double what works
  • New plays for new segments
What comes out the other end:Booked calls for your team
Built onClayClaude Coden8nHubSpotInstantlyHeyReachSales Navigator
Your 90-day plan

Start with a 30-day GTM Sprint. Then scale what works.

You'll know exactly what happens in your first 90 days, and what you'll have at the end of each month.

Start here Days 1–30

The GTM Sprint

  1. Week 1Diagnose. Your best and worst customers, your buying chain, your offer, and what's broken in your current motion.
  2. Weeks 2–3Build. Your market map, signals, scored list and copy. Your sending domains warm up in the background.
  3. Week 4Launch. First campaigns go live, and warm-network conversations start so you're talking to buyers while cold volume ramps up.
By day 30Your system is live, and you have a clear execution plan.
Days 31–60

Run + learn

  1. VolumeSending scales up as your inboxes come up to speed.
  2. LinkedInAdded as the fallback for anyone email can't reach.
  3. TestingYour copy and segments tested one change at a time, so you know what actually moved the number.
  4. RepliesEvery reply sorted, routed to your team and logged in your CRM.
By day 60You know which segments and messages turn into booked calls.
Days 61–90

Scale

  1. Double downMore volume behind what's working. What isn't gets cut.
  2. New playsNew segments, new signals, new reasons to reach out.
  3. AutomateAI workflows take the manual research off your team's plate.
  4. Day 90A full review of results and your plan for the next 90 days.
By day 90You have a repeatable pipeline engine your team owns.

After day 90, you choose. Keep scaling with GathX, or take it in-house. Either way, you keep everything that was built.

215

Calls booked for Grant Engineering.

Around €1.2m in pipeline from architects, off a free CPD course as the offer. You give your buyers something they value first, and the calls follow.

Selected work

The strategies behind the systems.

Every market needs its own angle. Here's how GathX has found it for others, and how it'll find yours.

GreenFire UCSTelecoms · Ireland + NI

A market change turned into a reason to talk

Ireland's copper-network switch-off became a repeatable trigger, giving every business a timely reason to review its communications. The market was split into 27 buyer groups, each with its own sales play.

What you get from it: outreach tied to something that's actually happening in your buyer's world.

CloudBeesEnterprise · Fortune 100

Knowing which pitch to lead with, per account

Fortune 100 accounts were scored against four sales plays using public buying signals, so each one got the right proposition instead of all four cold. The AI account-mapping workflow became the account team's standard process.

What you get from it: the right message to the right part of each account.

Hire Spartanvia Parasol · VC targeting

Fit first, then timing

A points-based model scored VC firms on portfolio fit first, then on live engineering-hiring signals, only for firms that passed fit. The result was a tight tiered list of around 50 priority prospects.

What you get from it: a short list you can actually work, not a long one you can't.

LinkdAgency · 15 client accounts

A Dream 100 that landed the biggest accounts

A scored Dream 100 programme of around 300 companies, screened against the do-not-contact list. The Hennessey Digital target list became the agency's first sizeable win and the model the founder rebuilt the business around.

What you get from it: your best-fit accounts worked properly, one by one.

Proof

Hear it from the people who've worked with Colm.

He completely changed how I thought through a lot of my go-to-market process for clients, how we build lists, how we use AI to build target lists and account lists.
Justin AshbyLinkd

Colm worked with us at Parasol as a GTM engineer on some of our most critical outbound projects. He owned micro-campaigns end-to-end — enrichment, copy, Instantly execution— and consistently shipped lists with real signal layered in: fit tiering, pain-signal detection from public data, contact availability. He's fast, thoughtful, and builds workflows that hold up at scale.

Any team doing serious outbound or GTM engineering work would be lucky to have him.

Josh IrwinOwner, ParasolClient · April 2026

Colm attacked every problem with a strong level of curiosity and problem-solving execution. Very often times he brought new ideas and solutions to the table and rather than talking about it he demonstrated the work that he performed. I would strongly recommend working with Colm.

Joe CarbonaroOwner, ParasolClient · April 2026

I had the pleasure of working with Colm on cold email campaigns, and he consistently delivered great results. Colm is easy to work with and brings a positive "can-do" attitude to every project. He is eager to learn, tackle challenges, and figure things out, always putting in extra effort to ensure the job gets done.

What really stood out to me was Colm's dedication to his clients. He goes above and beyond to ensure their needs come first, demonstrating a strong commitment to delivering value. His client-focused approach reflects his professionalism and work ethic.

Colm's problem-solving skills, attention to detail, and commitment to his work make him a reliable choice for any digital marketing or lead generation needs. I'd happily recommend him to anyone looking for someone who is driven, resourceful, and focused on achieving results.

Fritz van der WesthuizenFounder, SynergERPClient · December 2024

I highly recommend Colm for his exceptional business development skills. Colm excels in communication, actively listening to clients' needs and tailoring solutions accordingly.

Jason HamiltonCo-Founder & Co-CEO, TestLauncherClient · December 2024

I had the pleasure of working with Colm as our sales lead generator. I truly appreciate the dedication and effort Colm put into the role. From the start, he approached the task with a positive attitude and was proactive in reaching out to potential leads and exploring various strategies.

Colm consistently kept me informed with regular updates and demonstrated a genuine desire to improve and adapt. His communication was clear, and he was always open to feedback and willing to adjust strategies to improve results. It's clear that Colm is committed to success and cares about delivering value.

Alex DinsmoorGrowth & Marketing LeaderClient · December 2024

I have worked with Colm for a few years, and in that time - he has grown significantly as a leader and a professional.

Colm is very courageous, and has huge aspirations - and a work ethic to match it. He is someone who won't die wondering, and will see what he is capable of achieving - which is a great attribute to work alongside.

I found him humble, open minded and enjoyable to work with over the years, and would recommend Colm to anyone.

Stephen MoretonOrganisational Growth, Culture & Leadership PartnerMentor · March 2025

All recommendations are published on Colm's LinkedIn profile.

Colm Gath
Who builds your system

You work directly with Colm.

Colm Gath is the GTM engineer behind GathX. Through GathX he has run outbound and new-business programmes for SaaS, engineering, telecoms, construction tech, finance and hospitality teams, from owner-led Irish firms to Fortune 100 accounts. The pattern is always the same: results don't come from more activity. They come from better systems and faster learning.

He's also an elite sprinter, and that mindset runs through your build: precision, discipline and relentless feedback loops. No hand-off to a junior. The person you meet on the first call is the one building and running your system.

Clay expertClay Bootcamp graduateClaude Code cohort graduate
FAQ

Questions, answered straight.

What is the 30-day GTM Sprint?

Your first month. GathX diagnoses what's broken in your outbound, builds your foundation (market map, signals, scored list, copy), launches your first campaigns, and gives you a clear execution plan. It's how you make smart decisions before committing months of time and budget.

What happens after the Sprint?

You follow the 90-day plan: run and learn in month two, scale in month three. After that, you keep scaling with GathX or take the system in-house. Everything built is yours.

Who is this for?

B2B companies with a sales team to feed and a product or service worth talking about. If your outbound feels like more effort than it should be, it's for you.

Does this replace our sales team?

No. GathX builds and runs the system that books the calls. Your team takes the calls and closes the deals.

How is pricing worked out?

It depends on how complex your data is, which markets you sell into and which channels you need. You'll scope it together on the call and get a clear number afterwards.

Which tools will you use?

Clay for sourcing, enrichment and scoring. Claude Code and n8n for AI workflows. Instantly for email, HeyReach for LinkedIn, HubSpot as the CRM. If you already pay for something that does the job, your system gets built on that.

Book a call

If your outbound feels heavier than it should, let's talk.

Pick a time that suits you. It's a 30-minute review of your outbound with Colm.

  • Where your current outbound is leaking
  • The signals worth watching in your market
  • What your first 30 days would look like

Calendar not loading? Open the booking page →