operator identity / commerce + AI systems
Shopify App Engineer × AI-Augmented Builder
I build Built for Shopify apps at Pareto — checkout limits, discount engines, MCP servers — running in production for merchants worldwide. Claude Code and agent workflows are leverage, not what I sell.
operator identity
I work at the seam where storefront ambition meets production constraints — checkout rules, discount logic, database-heavy workflows, MCP servers, and app architecture that has to survive real merchant operations.
capability systems
Validation Core
Precise, maintainable checkout rules that resist bypass attempts and keep merchant operations predictable.
Pricing Systems
Custom discount flows, limit rules, and promotion logic that stay readable as the rules get gnarlier.
Embedded Apps
End-to-end app surfaces — secure auth, stable data models, admin flows that hold up in operations, and a clean delivery path.
Performance
Query tuning, migration planning, and data workflows for commerce systems that have to stay fast under real load.
Ownership
Shipping discipline — CI/CD, code review, launch readiness, monitoring, and code you can still maintain a year later.
Leverage Layer
Claude Code, MCP servers, and agent orchestration — used on real Shopify app architecture, not demos.
stack profile
Honest about what I touch every day, what runs in production at scale, what gives me leverage, and what I know but won't claim as core. No percentages.
working philosophy
Claude Code is part of my day — navigating the codebase, refactoring, reviewing my own work before it goes to a human reviewer. MCP servers are how I expose production systems like Pareto to AI agents safely, with typed contracts. Agent orchestration keeps complex projects manageable without bloating any one context window.
AI is leverage. The architecture decisions, the merchant trust, the production discipline, and the Built for Shopify bar — those stay human-owned.
selected case files
Merchants needed min/max quantity, cart-total, and B2B order limits enforced at checkout — without breaking valid carts or leaving room for bypasses.
Built the limit-validation core on Shopify Functions, with merchant-facing rule modules and admin flows held to the Built for Shopify performance bar.
A BFS-badged app at 4.8★ across 118+ reviews — running in production for stores worldwide.
Merchants wanted tiered buy-more-save-more pricing — products, variants, and POS — without discount paths that confuse the cart or quietly eat margin.
Built tiered discount rules on Shopify Functions, plus POS extension support, merchant configuration flows, and operational guardrails that hold under the BFS performance bar.
A BFS-badged app at 4.9★ across 245+ reviews — 94% five-star — still scaling in 2026.
Merchants — and the AI assistants helping them — needed structured, auditable access to Pareto's discount and limit configurations. Pointing agents at the raw admin API wasn't safe or readable.
Built an MCP (Model Context Protocol) server in Go with GoFR. Exposed typed tools for rule inspection, config validation, and scoped queries — for both human operators and AI clients like Claude Desktop, Claude Code, and custom agents.
A working bridge between Pareto's commerce logic and AI workflows. Merchants can ask a natural-language assistant to inspect their setup, walk through a rule, or sanity-check a config.
Merchants needed precise delivery-date and time control — blockout dates, lead time, cutoffs, per-shipping-method schedules — without fragile storefront hacks.
Built the merchant configuration, Shopify API integration, and checkout-facing scheduling logic around production data flows and operational guardrails.
Took delivery planning out of brittle storefront hacks and into a checkout system merchants trust — now a BFS-badged DingDoong app at 4.9★ across 261+ reviews.
archive
Tiered buy-more-save-more pricing with product- and variant-level rules integrated into the cart experience (part of the Pareto suite).
Custom automation engine, UI configuration dashboard, and trigger system that syncs natively with Shopify workflows.
Migration of millions of records with transaction handling, rollback paths, error recovery, and query optimization.
Resolved lock waits, binary log storage pressure, and indexing bottlenecks to reduce critical query latency.
Cart API enforcement modes for min/max quantity and order limits, surfaced inside the Shopify POS interface.
Order and returns management system with real-time messaging and integrations across Amazon SP, Shopify, Stripe, and PayPal.
experience
XIPAT Flexible Solutions
WISE COMMERCE
Hanoi University of Industry