GTM ENGINEERING AS A SERVICE

Generate pipeline today,
with tomorrow's technologies

We design and operate custom B2B GTM systems for you, combining artificial intelligence, next-gen tools and human expertise to increase your revenue every month.

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The problems we solve

No intent signals

Your outreach goes out without real-time buying signals. You contact accounts with no idea if they're in-market right now.

ICP based on guesswork

Your target lists are guessed, not informed by actual market behavior. Nobody knows which segment truly converts.

Generic plays

Same sequence for hundreds of accounts that have nothing in common. One or two signals, one message, send, repeat.

Disconnected data

Enrichment, scoring, CRM and outreach live in separate tools that don't talk to each other. Sales works with partial or stale data.

Campaigns, not systems

Outbound treated as a one-off project: a list, a sequence, send, start over. Nothing compounds, nothing improves month over month.

Emails landing in spam

No proper sending infrastructure. No warm-up, no sub-domains, no deliverability setup. Your best message ends up invisible.

CRM is a graveyard

Your CRM is full of duplicates, outdated contacts and missing data. Nobody trusts it, nobody uses it. It should be your single source of truth, not a data dump.

No pipeline visibility

You have no idea how many deals will close next month. No forecasting, no predictability. Every month is a guess.

Tools bought, never connected

You bought Apollo, Lemlist, maybe Clay. But nobody connected them. Each tool lives in its own tab, doing 10% of what it could.

3 phases to build
your perfect GTM system

1

Context & Infrastructure

We deep-dive into your business, reverse-engineer your best deals and build your ICP from real data. In parallel, we set up your entire sending infrastructure, clean and connect your CRM, and map your total addressable market with 10+ enrichment sources. Every account is scored dynamically combining fit and intent. Custom signal detection tools can be built specifically for your market.

Every decision that follows depends on this foundation

2

Activation & Iteration

The system goes live. Each account receives a unique play based on the full depth of enriched data: industry, persona, pain point, tech stack, custom signals. We iterate rapidly on messaging, angles and segments. The analysis reveals which data combinations drive the highest response rates.

Every play is a test, every result sharpens the next one

3

Scale & Optimize

Winning combinations are identified and amplified. We increase volume on what converts, keep testing new angles in parallel, and optimize your full pipeline velocity. The system is documented, the CRM is your command center, and the playbook is yours to keep.

What works gets amplified, what doesn't gets cut

This isn't prospecting, it's GTM R&D

Proven results

Best-in-class tools,
perfectly connected

Data & Signals

Apollo
Sales Navigator
LeadMagic
Prospeo
FullEnrich
Ocean
Trigify

Orchestration & AI

Clay
Cargo
n8n
Claude

CRM

HubSpot
Attio
Salesforce
Pipedrive

Activation

Lemlist
Instantly
La Growth Machine
HeyReach

Not another agency,
a GTM Engineering team by your side

Classic outbound agency GTM Freelancer Y3A
What's delivered ~ Leads, sequences ~ One-off execution A complete, documented system
Ownership Agency keeps the data ~ Varies You own everything
CRM Untouched ~ Optional Single source of truth, connected
Methodology Volume > precision No structured method One play per account, dynamic scoring
After the engagement Back to zero Back to zero The system keeps running
Stack ~ Basic tools ~ Depends 30+ providers, Clay, AI, full infra

Two founders,
a proven duo

Antoine Achach

Antoine Achach

Sales & GTM Lead

GTM strategy, sales methodology and commercial execution. The entrepreneurial side of the duo.

LinkedIn
Yohan Atlan

Yohan Atlan

Lead GTM Engineer & Lead Ops

Full stack engineer, growth and GTM engineering expert. The technical side of the duo.

LinkedIn

13 combined years of experience in entrepreneurship, sales strategy, growth and GTM engineering. What we built before, we now build for you.

Everything you want to know

We work with B2B companies from pre-seed to Series A, typically 2 to 25 people. If you have a product that sells and need a system to generate pipeline, it's for you.

The first 3 weeks are dedicated to building the full infrastructure. First plays go live week 4. Most clients see demos and pipeline by week 6.

You keep everything: the data, the CRM, the infrastructure, the documented playbook. Nothing disappears. The system keeps running without us.

We hear this a lot, and honestly it makes sense. Most agencies work at arm's length: a template sequence, a weekly report full of vanity metrics, and when results don't come, they blame your market. We work differently. We build inside your infrastructure, your CRM, your tools, your data. We create custom signal detection specific to your market, not generic intent triggers. Every play is analyzed, iterated, and documented. You see exactly what we do, why we do it, and what's working.

Technically yes. But it takes 6 to 12 months of trial and error to get a system that actually runs. The alternative is hiring a GTM engineer: that's 50-60K€/year minimum, plus 3 to 6 months before anything is operational. Y3A delivers a working system in 3 weeks for a fraction of that cost, and you keep the playbook forever.

Outpace your competitors,
starting now

30 minutes to understand your situation and see what we can build together.

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