Independent GTM engineer · Indonesia

See what breaks
before the
budget does.

I’ve spent my own money learning how quickly a good looking metric can hide a bad decision. Now I build the tools that make the real numbers easier to see.

Dian Bilhokista Ex-founder, builder, still curious.

01 / Lessons paid for

The numbers looked good.
The business disagreed.

These are the mistakes I made with my own budget, and the signals I should have read sooner.

FIG. 02 / THE LOOP
Yoofix · Marketplace post-mortem

Acquisition worked.
Retention didn’t.

Monthly orders grew more than 560% in three months. Then orders fell 80% when the promo stopped. Almost a third of the business came through WhatsApp, a channel I had treated as support.

−18%acquisition cost
−80%orders after promo
Read the full post-mortem
Outbound · 2026

I rewrote the email.
The email never arrived.

One delivery attempt in four hard-bounced. The list had been partly invented by my own lead generator. The copy was the wrong thing to fix first.

Read the write-up
THE SMALL LESSON

Check that the message arrives before judging the message.

OTHER FIELD NOTES

Arture · A campaign ledger connected Meta clicks to signed contracts. The furniture flight cost about 1.4× the average per chat and closed nothing, so budget moved.

Adhi City Sentul · Landing funnels fed the sales CRM. About 1.2% of CRM leads became closed property sales over the campaign period.

02 / The instruments

I build what I wish
I had back then.

Not another dashboard to admire. A way to catch the wrong assumption while it is still cheap to change.

02

Trust the conversion

Server-side events and a ledger from ad spend to signed deal, so the dashboard can be checked against reality.

First-party analytics running on my own sites
03 / A bit about me

I have been the person staring at a number, hoping it means more than it does.

I founded an AC-service marketplace and ran its go-to-market. I’ve also led engineering and technology teams in logistics, property, and investment. That mix changed how I work: start with the decision, trace the data, then write the smallest useful system.

These days I work directly with founders and teams. I still write code. I still ask awkward questions about the spreadsheet.

Full background on LinkedIn ↗
04 / Work together

Start with one
clear question.

Also open to a full-time GTM engineering role. For projects, these are the three ways to begin.

01

GTM Teardown

A live 15-minute screen share. We look at the funnel, tracking and pricing; you leave with the three likely leaks in writing.

$49/ session
02

GTM Build Sprint

One scoped system built and shipped as code: conversion tracking, an ad-to-deal ledger, a prospect list, or a pricing tool.

$249 – $499/ sprint
03

Embedded GTM Engineer

Part-time engineering inside your team: pipelines, tracking, experiments and a weekly read of what the numbers say.

$1,500 – $3,000/ month
05 / Your move

What decision is on
your desk right now?

Send me the website and the number you’re unsure about. I’ll tell you what I would check first.

bilhokista@gmail.com