AWS Certified · Full-Stack · 5+ Years Production

Launch for merchants,upgrade for teams

Still taking orders through LINE, reconciling transfers by hand, and tracking everything in spreadsheets? Or dealing with brittle internal workflows that everyone wants to automate but no one dares to touch? If you are building an AI SaaS tool or a developer tool, the same principle applies — clarify the core problem first, then ship fast. I build branded websites, payment and order flows, internal admin tools, and MVPs that make the business easier to run.

Start a Project View Work

300K+monthly active users served

99.9%production uptime

15%→0.5%failure rate reduced

70%↓manual review load reduced

50%↓CI/CD build time reduced

5+ yrsfull-stack experience

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// Services

What I actually help with

I do not take vague “build anything” projects. The focus is on four delivery areas where I can be accountable for the result.

01◎

Brand Website + Payments Backend

If you are still closing orders through chat and manual transfers, I can help you launch a branded website with ECPay card payments, convenience-store pickup, product management, order tracking, and inventory workflows.

Brand SiteECPayOrder AdminInventory

Best for: merchants, studios, and physical shops building their own sales channel

02▦

Internal Systems & Admin Tools

When every department has a different Excel file, Google Form, or LINE thread, the bottleneck is usually the workflow. I build unified back-office systems with CRM, dashboards, and role-based permissions.

CRMDashboardRBACREST API

Best for: SMEs relying on manual ops and trying to clean up internal processes

03◈

Legacy System Refactor & Extension

If the original developers are gone and no one wants to touch the system, I can assess the current architecture, refactor safely, and extend features without disrupting production service.

RefactorAPI IntegrationAWSNode.js / Go

Best for: teams stuck with fragile legacy systems that still need new features

04⬡

Product MVP Delivery

If you have a product idea but no reliable technical partner, I can help you ship an MVP in 4 to 8 weeks with React, Node.js, PostgreSQL, deployment, and CI/CD included. Especially suited for indie hackers and founders building AI tools or developer-facing products.

Next.jsNode.jsPostgreSQLVercel / AWS

Best for: indie hackers, AI tool founders, and solo builders who need a pragmatic technical partner to ship fast

// How to decide

If you are unsure whether to rebuild, refactor, or wait, start here

Before listing features, clarify the bottleneck. In most cases, these three checks make the decision much easier.

Check whether the issue is workflow or software

If the real pain is repeated handoffs, duplicated data entry, and unclear ownership, the first fix is often process design, not a full rebuild.

Assess whether the current system is still salvageable

If the core data is stable and only extension work has become painful, a phased refactor or partial replacement may be safer than starting over.

Only then decide whether a new build is justified

A rebuild makes sense when the current system clearly blocks operations and future expansion. Otherwise, a smaller intervention may be the better investment.

If everything feels urgent but nothing is clearly first, the immediate problem is usually prioritization, not development capacity.

Talk through your current workflow

// Selected Work

Production projects, not demos

Everything shown here shipped to real users or real business teams.

01E-commerce

Skera Jewelry — skera.net

Built a diamond e-commerce platform with ECPay checkout, convenience-store pickup, CRM tooling, third-party diamond API integration, and custom inventory management.

Next.jsECPayCRMAPI Integration

full checkout integration

02AWS Architecture

vocus — 300K+ MAU content platform

Designed an AWS event-driven notification system, an AI image fraud-detection pipeline, and improved email delivery reliability from 15% failure to 0.5%.

AWSLambdaSQSAI/ML

99.9% uptime

03B2B Dashboard