Selected work

Real systems, real outcomes.

A mix of client engagements, shipped products, and things I run myself. Some are live, some in progress — labeled honestly so you know exactly what you're looking at.

Client engagements

Client · Catering (via UK partner)

Prototype

A 4-path AI lead triage flow

Problem High-end enquiries arrived through a web form, sat in an inbox, and waited up to 48 hours for a manual reply — losing premium clients to faster competitors.

Build An n8n webhook that lets Claude read each enquiry, score it against budget and event signals, then route it down one of four paths: book, redirect, ask for missing info, or escalate a rush event.

n8nClaude / GPT-4oGoogle SheetsSMTPSlack

Built and tested end-to-end; not adopted by the end client.

Client · Catering (via UK partner)

Delivered

AI-visibility (GEO) audit

Problem The client believed their site was invisible to AI search and assistants, but had no diagnosis of why.

Build A 7-page audit of AI citability, schema markup, and brand authority — finding a stale address in schema, missing org fields, and a misdated founding year, with a prioritized 30-day fix plan.

Schema / structured dataGEO analysisTechnical SEO

Partner: “super useful when pitching to the client.”

Client · Accounting firm

In build

Audit pre-review automation

Problem A partner-led firm wanted to compress a 5-day audit cycle and stop doing anomaly-spotting by hand.

Build A per-client Obsidian + Claude Code workspace with Python anonymization: ingest financial statements, flag year-over-year anomalies into a clarification list, and pre-fill audit templates — privacy-first, raw data never sent to the model.

Claude CodePythonObsidian

Scope confirmed; in build.

Products & experiments

Browse on Gumroad →

Build · This website

Live

AI Lead Qualifier (live demo)

Problem I wanted a portfolio piece that was also a real, working product — not a screenshot.

Build A logged-in user submits a lead; a Trigger.dev task calls Claude and streams the structured qualification — tier, score, reasoning, next move — back to the browser in real time. Gated with Supabase auth, monetized with Stripe.

Next.jsTrigger.devClaudeSupabaseStripe

Try it yourself.

Open the demo→

Product · n8n + Gumroad

Shipped

Content Automation Bundle

Problem Creators waste hours reformatting one idea for every platform — and one failed post can break a whole publish run.

Build A decoupled n8n system: a message in Telegram is rewritten by AI, approved, then published to LinkedIn, Threads, and Facebook in parallel. Each platform is fault-isolated, with a summary report if one fails.

n8nOpenAITelegramPlatform APIs

$99 · published as an n8n Verified Creator.

View on Gumroad ↗

Product · n8n + Gumroad

Shipped

LinkedIn AI Lead Generation

Problem Manual prospecting on LinkedIn is slow and easy to get wrong.

Build Search by keyword, scrape profiles via Apify, let AI score each lead 1–10, and save the qualified ones to Google Sheets with a ready-to-send, personalized opener.

ApifyOpenAIGoogle Sheets

$39 · ~$5–10 per 100 leads.

View on Gumroad ↗

Product · n8n + Gumroad

Shipped

Telegram Vocabulary Bot

Problem Saving new words is easy; turning them into something you actually review is not.

Build An n8n template that wires Telegram to OpenAI and Notion: send a word by text, voice, or photo and the bot returns a structured card — definition, translation, part of speech, example — then files it in Notion. Whisper handles voice, GPT-4o-mini Vision handles photos.

n8nTelegramOpenAINotion

$19 · 20-node template, set up in ~10 min.

View on Gumroad ↗

Build · Self-operated

Live

AI Workflow Daily

Problem I needed a daily proof-of-work that ran itself.

Build An end-to-end pipeline: pull AI news, summarize with AI, generate an image and voiceover, then publish to Instagram, Threads, and Facebook every morning — hands-off.

n8nGPT-4o-miniTTSPlatform APIs

Runs for under $0.10 a day.

Product · Subscription (MVP)

In validation

IELTS Teacher Monthly Pack

Problem IELTS teachers spend ~20 hours a month building fresh practice material.

Build A monthly pack — trend report, speaking and writing questions, tiered model answers, slides, and vocabulary — generated on a schedule with Claude and Gamma.

ClaudeGamman8n

$29/mo · validating demand with teachers.

All prices in USD.

In their words

“Yu-Ta played a critical role in turning ideas into scalable systems. He doesn't just execute tasks — he thinks in systems, and is proactive about improvements beyond the original scope.”

Ching Hsueh

PhD physicist · ex-AMD / TSMC

LinkedIn recommendation

“Looks very good, Jason — thanks a lot. Will be super useful when pitching.”

Joshua H.

Automation partner · London

On the AI-visibility audit

“Average satisfaction 4.86 / 5 across 28 attendees — one of the few APAC colleagues to present at our global forum.”

Internal AI training

Mercedes-Benz Mobility

Session feedback

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