I build the frontend, and untangle the business rules behind it.
Nearly 3 years shipping EdTech, CRM, and logistics SaaS with React, Angular, and React Native.
01 · Work
Problems I've been trusted with
01
Every case starts with what was actually wrong. Then what I did, the calls I made, and what changed.
Sanan · Scrum & delivery
Frontend Developer · Scrum Master
A small change to a business rule, like how tuition is calculated for a registered service, could touch the parent app, the teacher app, and the admin web at the same time. When edge cases weren't found before development, they turned up late in QA or in production.
→ Sprint success rate above 95%, tracked with structured sprint metrics.
EZOM · Business rules & states
Fullstack Developer · requirement analysis
Billing has a lot of states that look alike but mean different things. A payment Stripe has accepted isn't the same as a plan EzOM has applied. A downgrade shouldn't cut access mid-period. A $0 trial invoice marked paid shouldn't flip a trial to ACTIVE. If any of these get mixed up, a customer gets charged twice or loses features they paid for.
→ Organisations can trial, buy, upgrade, downgrade, cancel, and resume plans without contacting support.
Sanan · Requirement analysis
Product Owner · requirement analysis
The CRM had nowhere to put a contact that hadn't been checked yet. Every new phone number went through the 3-step “Add family” wizard, which creates a family, a student, and an enrollment opportunity. Spam and wrong numbers sat in the family list next to real customers, logging one number meant filling a heavy form, and nobody could measure how many raw contacts actually became families.
→ PRD approved for design the day it was written, with all four blocking questions resolved.
Sanan · Product · process · engineering
Product Owner · Fullstack Developer
The challenge wasn't just building new features. It was turning a fragmented, AI-first product into a usable, maintainable system that actually meets customers' needs.
→ Product requirements and issue tracking in one place.
EZOM · Integration requirements
Fullstack Developer
Account managers had to produce each organisation's monthly invoice and statement in Xero by hand, outside EzOM, while the transactions behind them lived inside EzOM.
→ Account managers generate and download monthly invoices and statements from the organisation list.
02 · AI workflow
The workflow decides when
02
On Kizna CRM we run an AI-driven development framework. The process lives in the tooling instead of in people's memory. Every request is classified, routed to a role, and can't skip steps: no design, no code. No tests, no release.
Workflow engine
Reads the request, finds the ticket ID, and classifies it as a new feature, a small improvement, or a bug fix.
you ›I want to change how trials are billed (EZOM-1538)
engine ›ticket EZOM-1538 · type: improvement · prd.md not found
Docs the AI reads first
/docs/system context.md business + domain architecture.md system design coding-guidelines.md rules for AI & dev /features/<TICKET> prd.md WHY + WHAT design.md SRS + tech design dev-plan.md task breakdown /bugs/<TICKET> srs-lite.md root cause + fix
Example output · EZOM · Organisation Subscription
An as-is requirement spec, written with the BA skill and handed to BA/PO for sign-off.
22functional reqs
71acceptance criteria
22open questions
AC-028 · Given Stripe accepted an immediate change but EzOM hasn't recorded it
Then the change stays PENDING_PAYMENT; the target plan is not granted yet.
status: HIỆN TRẠNG · CHỜ DUYỆT · unclear cases stay NEEDS_CLARIFICATION
03 · Products
Things I made
04 · How I work
Vague request → shipped feature
04 · how I work
Turn a request into flows, business rules, edge cases, and acceptance criteria, and list everything else the change will touch.
Walk through the solution with Backend, QA, and Design so nobody discovers a different interpretation during review.
Split work into reviewable slices. Protect the important flows with Jest, Playwright, or Cypress.
Use sprint metrics and retros to remove the friction that keeps coming back.
05 · Toolkit
The sticker sheet
05 · Everything I reach for, grouped by the job it does, from business analysis to AI-assisted dev to deployment.
06 · Notes
Notes to self
07 · Fun facts
Cat person, mostly
