Avyxen LLC · Tony Ngo
A working automation system for a certification course business: inquiry through payment, agreement signature, course access and CE certificate. Nine workflows move each person forward on real events. Nothing advances by hand except the parts that need human judgment.
n8n · Airtable · WordPress/WooCommerce · Stripe · DocuSign · Gmail · Resend · Slack
The engineering account: race conditions that produced real duplicate records, webhook signature verification, the retry gaps that were found by auditing rather than guessing, and the findings deliberately left unfixed with the reasoning for each.
Read the writeupThe same system in plain language, followed through one applicant from first inquiry to certificate. What the automation does at each stage, what a person still decides, and what to do when something looks wrong.
Read the walkthrough