Blazing fast implementation, backed by 74+ martech, data and growth stacks*
Go-to-market (GTM) engineering for a pipeline that scales
We build the go-to-market engine, all of it or the part you need: Clay enrichment with Apollo or ZoomInfo, personalization for every account, cold email infrastructure with warmup, and CRM workflows that capture every reply.
Here GTM means go-to-market. For Google Tag Manager, see analytics and tracking.
- Fixed price, no hourly billing
- Live in weeks, not quarters
- Startups get 50% off
- Free martech AI agent
Tools we implement
Clay
Apollo
ZoomInfo
HubSpot
Salesforce- Flito
* 74+ martech, data and growth stack implementations, delivered through martechdevs and Growth and Analytics Partners LLC.
Trusted by fast-growing teams
GTM engineering services for outbound and ABM
GTM engineers on demand. We build the lead data, personalization, sending infrastructure and CRM workflows behind your outbound.
Clay tables and lead enrichment
Account and contact lists built in Clay and enriched from several providers in turn, so you find more verified emails and leave fewer gaps.
Apollo or ZoomInfo setup
Your data provider connected to Clay and your CRM, with filters that match your ideal customer profile.
Deep lead personalization
Research on each account, such as hiring, funding, tech stack and news, turned into a first line and an offer that fit.
Personalized ABM
Named account lists with the buying committee mapped at each one, ready for email, LinkedIn and ad audiences.
Cold email infrastructure
Separate sending domains and mailboxes, SPF, DKIM and DMARC, warmup, and daily limits that protect your main domain and sender reputation.
Custom CRM workflows
Replies, meetings and enrichment synced to HubSpot or Salesforce, or custom workflows built on Flito, our own CRM.
AI agents for go-to-market, built on your playbook
We build AI agents on your GTM playbook and ideal customer profile. They research every lead, personalize in Clay and work with Apollo or ZoomInfo, and your team can ask the pipeline questions in Claude or Codex.
- Find 50 accounts that match our ICP and hired a head of growth this quarter.. Searches Apollo, then enriches in Clay.
- Research this lead and draft a first line from their latest news.. Runs the research skill built on your playbook.
- Which sequences booked meetings last month, and from which segment?. Reads HubSpot over MCP.
AI research for every lead
Each account researched for hiring, funding, tech stack and news, then Clay AI personalization turns it into a first line and an offer that fit.
Agents built on your playbook and ICP
Your ideal customer profile, messaging and rules written into the agents, so they qualify and write the way your best rep would.
Apollo or ZoomInfo with AI
Agents that pull and verify contacts from Apollo or ZoomInfo, and keep HubSpot or Salesforce up to date.
Ask your pipeline in Claude
MCP access to your CRM, so anyone can ask how outbound is doing in plain English, in Claude or Codex.
With every implementation
Yours after handover
The MCP access, the agents and the docs live in your own accounts. Your team runs it all with AI, without depending on us.
No retainer needed
A one-time setup at a fixed price. There is no monthly retainer to keep it running, so your costs go down over time.
Right from day one
Anyone can set up a tool with AI, but it's only as good as what the AI guesses. We know what works from 74+ implementations.
Free martech AI agent
Every implementation includes it: slash commands and skills that run your whole stack in Claude Code.
See the agent
Not sure your data is ready for AI? Use the AI readiness checklist
Sound familiar?
Reply rates fall every quarter.
Generic sequences hit the same lists everyone else bought.
Your best accounts are missing from your lists.
One data provider leaves gaps in emails and phones.
Deliverability dies after the first big push.
Skip warmup and rotation, and the main domain pays.
Reps spend more time researching than selling.
Personalization is manual, so it never scales.
We engineer outbound like a product: multi-source enrichment in Clay, research-based personalization and sending infrastructure that protects your domain, all feeding one CRM view of every account.
GTM engineering, step by step
01
Free audit
We look at your ideal customer profile, data sources, sending setup and CRM.
02
Fixed quote
Price, scope and timeline by email, usually within one business day.
03
Build the data
ICP filters, Clay tables, enrichment and personalization, tested on real accounts.
04
Build the infrastructure
Domains, mailboxes, authentication and warmup, ready before the first send.
05
Connect the CRM
Every reply, meeting and data point flowing into HubSpot, Salesforce or Flito.
06
Hand over
Docs and training for your team, plus ongoing support if you want it.
Don't take our word for it. Hear it from the founders who handed us their stack.
JB Jaquenzel
Founder and CEO, Evaboot
“Faizur helped us transfer Google Analytics conversion events to Google Ads via Segment. We set that up within two or three weeks. Now we have a clear vision of our conversions and we could optimize our campaigns like this. Because if your tracking is not on point, you can't really improve your Google Ads performance.”
GA4
Segment
Google AdsElie
CMO, Submagic
“We have worked with Faizur and his agency for the past six months to set up all the growth stack that we needed. All the marketing analytics tools like Mixpanel, Google Analytics, data tracking tool, customer analysis tool like Customer.io, and every kind of tool that we needed. He's always ready to help and super reactive. I highly recommend to work with him.”
Mixpanel
Customer.ioGA4Arman Assadi
CEO, Steno.ai
“We worked with Faizur when we wanted to set up Mixpanel. What I loved was how detail-oriented he was, and that he wasn't just there to accomplish that one task. He was able to advise us. He suggested setting up Segment and he thought about everything at a macro level, all the way down to the micro. It gave me confidence to outsource this.”
MixpanelSegmentGabriel
Operations, MKTV
“We recently had the pleasure of working with Faiz on our integration of Segment. Not only did he help us seamlessly set up the integration, but he also went above and beyond to help us establish dashboards in Mixpanel. What was super valuable was having somebody who understood both the business/marketing requirements but also had the technical expertise to execute them.”
SegmentMixpanelJB Jaquenzel
Founder and CEO, Evaboot
“Faizur helped us transfer Google Analytics conversion events to Google Ads via Segment. We set that up within two or three weeks. Now we have a clear vision of our conversions and we could optimize our campaigns like this. Because if your tracking is not on point, you can't really improve your Google Ads performance.”
GA4SegmentGoogle AdsElie
CMO, Submagic
“We have worked with Faizur and his agency for the past six months to set up all the growth stack that we needed. All the marketing analytics tools like Mixpanel, Google Analytics, data tracking tool, customer analysis tool like Customer.io, and every kind of tool that we needed. He's always ready to help and super reactive. I highly recommend to work with him.”
MixpanelCustomer.ioGA4Arman Assadi
CEO, Steno.ai
“We worked with Faizur when we wanted to set up Mixpanel. What I loved was how detail-oriented he was, and that he wasn't just there to accomplish that one task. He was able to advise us. He suggested setting up Segment and he thought about everything at a macro level, all the way down to the micro. It gave me confidence to outsource this.”
MixpanelSegmentGabriel
Operations, MKTV
“We recently had the pleasure of working with Faiz on our integration of Segment. Not only did he help us seamlessly set up the integration, but he also went above and beyond to help us establish dashboards in Mixpanel. What was super valuable was having somebody who understood both the business/marketing requirements but also had the technical expertise to execute them.”
SegmentMixpanelJB Jaquenzel
Founder and CEO, Evaboot
“Faizur helped us transfer Google Analytics conversion events to Google Ads via Segment. We set that up within two or three weeks. Now we have a clear vision of our conversions and we could optimize our campaigns like this. Because if your tracking is not on point, you can't really improve your Google Ads performance.”
GA4SegmentGoogle AdsElie
CMO, Submagic
“We have worked with Faizur and his agency for the past six months to set up all the growth stack that we needed. All the marketing analytics tools like Mixpanel, Google Analytics, data tracking tool, customer analysis tool like Customer.io, and every kind of tool that we needed. He's always ready to help and super reactive. I highly recommend to work with him.”
MixpanelCustomer.ioGA4Arman Assadi
CEO, Steno.ai
“We worked with Faizur when we wanted to set up Mixpanel. What I loved was how detail-oriented he was, and that he wasn't just there to accomplish that one task. He was able to advise us. He suggested setting up Segment and he thought about everything at a macro level, all the way down to the micro. It gave me confidence to outsource this.”
MixpanelSegmentGabriel
Operations, MKTV
“We recently had the pleasure of working with Faiz on our integration of Segment. Not only did he help us seamlessly set up the integration, but he also went above and beyond to help us establish dashboards in Mixpanel. What was super valuable was having somebody who understood both the business/marketing requirements but also had the technical expertise to execute them.”
SegmentMixpanel
GTM engineering at a fixed price
You know the price, the scope and the timeline before we start.
Fixed price, no hourly billing
One price for the whole project, agreed before we start. No timesheets and no surprise invoices.
Your quote in one business day
Tell us your stack and what you need. You get the price, scope and timeline by email, usually within one business day.
Live in weeks, not quarters
Most projects are live within a few weeks, and the timeline is written into your quote.
Free audit
A 30-minute call on your stack: where it hurts, the quick wins, and what to fix first. No obligation.
Book a free audit
Startups get 50% off
Same specialists and the same fixed-price quote, at half the price. Tell us your stack and the 50% discount is applied to your quote.
- Fixed price, no hourly billing
- Live in weeks, not quarters
- Specialists, not generalists
GTM engineering questions, answered
Something else on your mind? Email hello@martechdevs.com or book a free audit.
What is go-to-market (GTM) engineering?
It's the technical side of sales and marketing: the data, tools and automation behind outbound and pipeline. A GTM engineer builds the lead lists, enrichment, personalization, sending infrastructure and CRM workflows that let a small team run outbound like a large one. On this page GTM stands for go-to-market. Google Tag Manager work is on our analytics and tracking page.
What can you build in Clay?
Clay tables that find and qualify accounts, find the right contacts and enrich them from several data providers in turn (waterfall enrichment), plus AI columns that research each account and draft a first line. The results go straight to your sequencer and CRM.
Do you build AI agents for outbound?
Yes. We build AI agents on your GTM playbook and ideal customer profile. They research every lead, write personalized first lines in Clay, pull and verify contacts from Apollo or ZoomInfo, and keep your CRM up to date. You own them after handover, with no retainer needed.
Apollo or ZoomInfo?
ZoomInfo has deeper company data and intent signals and is priced for larger sales teams. Apollo pairs a contact database with sequencing at a lower price and suits smaller teams. Many teams use either one as a source inside Clay, next to other providers. We set up whichever you use and connect it to your CRM.
How do you send cold email at volume without hurting deliverability?
By keeping cold email off your main domain. We set up separate sending domains and mailboxes, authenticate them with SPF, DKIM and DMARC, warm them up, cap daily sends per mailbox and spread volume across them. Lists are verified first, so bounce rates stay low.
How long does domain warmup take, and how do you manage sender reputation?
New mailboxes usually need two to four weeks of warmup before they send campaigns. After that we watch bounce rates, spam complaints, blacklists and inbox placement, and rest or replace mailboxes that slip.
Do you connect it to our CRM?
Yes. Replies, meetings and enriched data flow back into HubSpot or Salesforce, so each account has its full history in one place. For custom workflows we also build on Flito, our own CRM.
What does personalized ABM look like?
Account-based marketing starts from a named list of target accounts. We build the list from your ideal customer profile, map the buying committee at each account, and personalize outreach with what that account is doing, like hiring, funding or a new tool. The same list can feed LinkedIn and ad audiences.
Can we hire a GTM engineer on demand?
Yes. Start with a fixed-price project, then keep us on for ongoing support as you add new segments, sources and workflows.
What does the free audit cover?
It's a 30-minute call on your ideal customer profile, data sources, sending setup and CRM: where it hurts, the quick wins, and what to build first, with a timeline and next steps. There's no obligation.
Get a fixed-price quote for your go-to-market engine
Three quick steps, under a minute. Price, scope and timeline by email, usually within one business day.
Startup?
GTM engineering guides from our blog
Read all guides- GTM Engineering
Clay and HubSpot: Keep Enrichment and CRM Data in Sync
Connect Clay and HubSpot without overwriting trusted CRM data. Plan matching, enrichment, field ownership, retries, review and a measurable pilot.
Jafrin Akter Alo11 min read
- GTM Engineering
Waterfall Enrichment: How to Get More Usable Contact Data
Build a useful enrichment waterfall in Clay or Apollo. Compare cost per accepted contact, verify results, preserve provenance and protect CRM data.
Jafrin Akter Alo12 min read
- GTM Engineering
Signal-Based Selling: Turn Intent Signals Into Useful Sales Actions
Build signal-based selling with product, website and company intent signals. Resolve identity, freshness, routing, costs and measurement before automating outreach.
Jafrin Akter Alo13 min read
Book a Free Audit
A free audit of your stack and what it needs. No pitch.
Thirty minutes, and you leave with a plan
We look at what you have, what it is costing you and what to do about it first.
- 30 minutes
- Video call, link on booking
- No obligation
What we'll cover
- Your current stack and where it hurts
- Quick wins we can ship first
- An integration roadmap
- Timeline, scope and next steps
Calendar not loading? Open it in a new tab or email hello@martechdevs.com.