Enterprise systems. SMB budgets. Delivered in weeks.
Custom business software built by a 15-year software architect, accelerated with AI. Fixed-scope projects — contact us for pricing.
- 15+ years experience
- AWS Certified Developer
- Based in Perth, Australia
- Bilingual EN · KO
// advantage
Why we're fast
AI-accelerated by a 15-year architect — not AI-generated by a prompt.
3–5x faster delivery
From discovery to launch in 4–8 weeks. AI tooling compresses the busywork so engineering time goes to architecture decisions.
40–60% lower cost
Fixed-scope MVPs. You get enterprise patterns without the enterprise retainer — contact us for a quote.
PDCA methodology
Weekly demos, versioned design docs, explicit success criteria. Scope doesn't drift because we measure it.
// services
Services
Four ways we help businesses move off spreadsheets and onto systems.
Custom Business Systems
Order, inventory, CRM, and operations systems tailored to your actual workflow.
MVP for Startups
Founder-ready MVP you can demo, iterate, and hand off — production-grade from day one.
Legacy Modernization
Escape brittle legacy stacks with a cloud-native rewrite — same business logic, better foundation.
Automation & Integration
Connect the tools you already pay for. Stripe, Xero, Google Workspace, Firebase, AWS — wired together.
// portfolio
Portfolio
Real systems. Running today.
QR-Based Restaurant Ordering
QR ordering, payments, cash management, and kitchen operations — one cross-platform system. 2 years live, 136+ builds.
AI Documents Tailoring Tool
AI rewrites a candidate's resume to match each job description — real edits, not placeholders.
Indoor Venue Booking System
Branded time-slot booking for indoor venues — members, gift cards, multi-bay grid. First tenant live in Perth.
// process
How we work
Transparent, weekly demos, fixed scope.
- 01step
Week 0 — Discovery
Requirements workshop, data model, written scope, fixed quote.
- 02step
Week 1 — Design
UI mockups, architecture decisions, API contracts — all reviewable before code.
- 03step
Weeks 2–6 — Build
Weekly demo releases on staging. You test real features while we build the next slice.
- 04step
Weeks 7–8 — Launch
Production deploy, handover docs, two weeks of bug-fix support included.
// pricing
Pricing
Fixed-scope projects. No surprise invoices.
Project budget
On request
Typical MVP: 4–10 weeks, fixed scope
Pricing varies by project scope. Get in touch and we'll scope it together.
// founder
Built by Jungwoo (Jason) Lee
I'm a software architect with 15+ years building enterprise platforms at LG CNS (8y) and SK Planet (4y) in Korea, before moving to Perth in 2019 for a Master's at Curtin University. Since 2020 I've been running SJSoftware — shipping production systems for small and mid-sized businesses with the speed AI coding now makes possible.
AWS Certified Developer · Master of Commerce (Information Systems & Technology), Curtin University
What I care about
Transparency over surprise
The quote I give you is the price you pay. Every week you see working software in a demo, and I explain technical progress in plain language you don't need a CS degree to understand.
Execution over promises
Running code initial within 1 week. Running code in staging (with your feedback applied) within 2 weeks — always.
Client outcomes over tech puritans
The best architecture is the one that helps your business — not the one that wins Hacker News.
FAQ
// contact
Let's build something
Reply within 24 hours, on any working day.
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