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Portfolio — Edition 2026

Helping brands grow online.

Khoa — digital marketing, from Hội An. A public notebook on growth, brand, and the web.

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01 Selected work

Things I made and shipped.

A glowing crescent-eye motif in vermillion and gold on near-black — SoiTarot brand art
012026

SoiTarot↗

A tarot site was a 3am idea: a bet that I could win a competitive Vietnamese niche with programmatic SEO, built almost entirely by AI, in about a week. SoiTarot

A luminous core drawing many converging data streams inward — the single-pane-of-glass idea
022026

Jarvis↗

Jarvis is a marketing operating system I'm building for a Shopify brand — named, yes, after the assistant in Iron Man. Its job is unglamorous and badly needed:

A dark grid of product cards, the left columns filled and checked in vermillion behind a guardrail gate — an agent working a catalog page by page
032026

Product Helper↗

Product Helper is a guard-railed AI agent that builds and fills product pages on Sartoro's Shopify store — safely, at roughly ten times the speed I can manage b

Marble chess pieces beside a Doric column and a gold laurel on a dark gradient
042026

Athena Chess↗

Athena Chess (CLB Cờ Vua Athena) is the leading children's chess academy in Đà Nẵng — five branches, 5,000+ students since 2018, 30+ tournaments hosted, and coa

A coastal links golf hole at golden hour, the fairway sweeping toward the sea
052026

Vietnam Golf Discovery↗

Vietnam Golf Discovery (golfdiscovery.vn) is a tee-time discovery and booking platform for golf in central Vietnam — the championship coastline around Đà Nẵng a

A clear square perfume flacon with a matte black cap, lit against a dark editorial backdrop
062026

URBAN XXV↗

URBAN XXV is my own thing — a Vietnamese niche-perfume brand built on one idea: a fragrance is a place you can wear. The debut NYC collection maps three scents

Hoi An Old Town's Japanese covered bridge in warm golden light with a red silk lantern
072026

Fingo Private Tours↗

Fingo Private Tours is a Hoi An native's private-tour brand — small groups of six guests at most, the Old Town and the countryside, led by a guide who grew up t

Lantern-lit Hoi An Ancient Town at night, warm reflections on the river
082026

Hoi An Vibes Tours↗

Hoi An Vibes Tours is a private day-trip operator in central Vietnam — Hoi An, Đà Nẵng, Huế, My Son, and the countryside — run by a licensed local guide with se

Resolution
092026 · Concept

Resolution↗

What I was trying to figure out: why every thinking tool I'd used left me with more notes and no more clarity. I had years of Notion, of Obsidian, of a thousand

Mainspring
102025 · Concept

Mainspring↗

What I was trying to figure out: whether a task manager could make me feel calmer instead of more accountable. I'd used the powerful ones — the ones with projec

Fathom
112025 · Concept

Fathom↗

What I was trying to figure out: whether you can measure whether writing is working without spying on the people reading it. I wanted to know if my posts were a

All work →
▸ The kit
  • Photoshop
  • Higgsfield
  • Lightroom
  • Midjourney
  • Premiere Pro
  • Runway
  • After Effects
  • Evoto
  • Figma
  • WeShop
  • Gemini
  • CapCut
  • Claude
  • Kling AI
  • ChatGPT
  • Firefly
  • Perplexity
  • Ahrefs
  • DeepSeek
  • Screaming Frog
  • MCP
  • Semrush
  • Search Console
  • Analytics 4
  • Shopify
  • Looker Studio
  • Next.js
  • Sanity
  • Vercel
  • Cloudflare
02 Latest writing
Generative engine optimization, end to end
★ Featured

Generative engine optimization, end to end

GEO isn't a new dark art — it's SEO pointed at machines that answer instead of rank. The whole playbook: who's reading, what gets cited, and how to measure it.

3 min read →
Jul 02

Letting an agent write to production

The moment an agent writes to production instead of just reading it is where things break. Six rules that make it safe — and why default-deny is the whole game.

aiprocess
4 min
Jul 02

An agent you can trust on a live store

Setting up custom-made products by hand took me six months for one line. A guard-railed AI agent did a collection in a week — how, and why to start now.

aimarketingprocessseo
9 min
Jun 26

Measuring AI citations when there's no analytics for it

There's no Search Console for ChatGPT. Here's how I track whether AI is citing a brand — the proxies, the manual checks, and what's actually worth watching.

seoaigeo
2 min
All writing →
03 Say hi

I’m Khoa — a digital marketer in Hội An, helping small brands grow online.

Paid ads, content, landing pages, and measuring what actually matters. I take on a small number of projects I can do properly — and I’m open to a few right now.

Work with me→More about me →