CRM & Marketing Automation Engineer

CenetaJoan

GoHighLevel · Python · React · RevOps · custom API integrations

I build the technical systems that keep businesses running — the automations, integrations, and backend logic that connect the tools a company already uses.

Ceneta Joan
webhook · 200 OK lead → pipeline sync live
speed-to-lead engine — a workflow I ship
● running
New lead trigger · form / ad Route + enrich rules · API lookup Notify rep SMS · call · <60s CRM sync pipeline stage if duplicate → merge
The edge

Plenty of people can click around a CRM. Far fewer can keep it from breaking when the business scales.

My edge is a specific combination: I can actually write code, and I know the CRM and marketing-automation tools deeply. Most people have one side or the other.

The usual

The CRM operator

Comfortable inside the platform. Sets up workflows through the UI — until the job needs something the tool can't do out of the box.

  • Configures what the interface allows
  • Stuck when a webhook breaks
  • Waits on a developer for integrations
What you get with me

The engineer who also knows the tools

I work the CRM like an operator and write the custom scripts and API integrations underneath it. When the platform hits a wall, I build past it.

  • Custom code: Python, PHP, JavaScript, React
  • GoHighLevel & Zapier/Make down to the API
  • Full web platforms built end to end
What I fix

If your team can sell the work but keeps hitting technical walls building it.

These are the failures I get called in for — the ones that quietly leak revenue while everything looks fine on the surface.

ERR · INTEGRATION

Broken webhooks

Events that silently stop firing, retries that never happen, payloads that don't match. Data goes missing and nobody notices for weeks.

rebuilt with logging & retries
ERR · DATA LOSS

Leads leaking between tools

A contact enters in one platform and never reaches the next. Handoffs between systems that were never wired to talk to each other.

closed the gaps with real API sync
ERR · LIMITATION

Features the CRM can't do

The out-of-the-box tool can't handle the logic your business actually needs — so the work stalls at "the platform won't let us."

custom scripts fill the gap
Systems I've built

Live CRM and automation systems for US businesses.

Built and managed in production — not demos. I understand systems all the way down, not just the surface.

Real estate Solar Services
01

Speed-to-lead engines

The moment a lead arrives, it's routed, enriched, and put in front of a rep in under a minute — because the first business to respond usually wins the deal.

form / ad triggersrouting rulesSMS + call alerts
02

Full sales pipelines

Pipeline stages that mirror how the team actually sells, with the automation that moves deals forward and keeps the CRM honest.

stage logictask automationreporting
03

Automated workflows & forms

Intake forms, follow-up sequences, and internal workflows that run on their own instead of relying on someone remembering the next step.

formsfollow-up sequencesinternal ops
04

Integrations between platforms

Connecting the tools that don't natively talk to each other with custom REST API integrations, so data flows in one place instead of ten.

REST APIscustom middlewaredata sync
05

Full web platforms, end to end

Built complete web products from front end to backend logic — which is why I can reason about a whole system, not just the CRM sitting on top of it.

React front endbackend logicdatabases
Stack

The tools I build with.

Code

  • Python
  • PHP
  • JavaScript
  • React

CRM & automation

  • GoHighLevel
  • Zapier / Make
  • RevOps workflows
  • Pipelines & forms

Integrations

  • REST APIs
  • Custom integrations
  • Webhooks & middleware
  • Data sync
OPEN TO NEW WORK

Selling the work but hitting technical walls building it?

Open to freelance automation projects and white-label technical partnerships with agencies. Tell me where your systems are breaking — I'll tell you how I'd fix it.

stanley1cruz@gmail.com Las Piñas, Almanza Uno, Philippines