About Us & Engineering Team
David Miller
Founder & Lead Web Developer | Systems Architect
David Miller is the founder and lead systems architect of MyUtilityTools New Zealand. With over a decade of dedicated expertise in full-stack web engineering, client-side algorithms, and statutory verification suites, David designs deterministic computational utilities that respect consumer data sovereignty. Under his direction, all New Zealand Inland Revenue (IRD) tax brackets, KiwiSaver compounding schedules, and Reserve Bank interest rate benchmarks operate natively in client browser RAM without server-side database interception.
Our Engineering Philosophy & New Zealand Statutory Integrity
MyUtilityTools New Zealand was conceived to solve widespread information opacity and invasive data harvesting common among contemporary web utilities. Commercial financial portals frequently require consumers to surrender personal email addresses, phone numbers, or credit details before revealing basic mortgage amortization schedules or tax withholding figures. We believe mathematical truth and statutory transparency should be accessible to all Kiwis unconditionally, instantly, and with complete cryptographic privacy.
Every calculation engine across our eight semantic clusters is built around three uncompromising architectural pillars:
- Deterministic 64-Bit Local RAM Execution: Calculation inputs are evaluated directly within your local browser process via vanilla JavaScript. No financial data, salary amounts, or family parameters are ever transmitted to external web servers or third-party marketing networks.
- Statutory Verification & Primary Legal Sources: Our algorithms reflect authentic New Zealand statutory codes, including the Income Tax Act 2007, Goods and Services Tax Act 1985, KiwiSaver Act 2006, and Child Support Act 1991.
- WCAG 2.1 AAA Accessibility & Zero Bloat: Lightweight semantic HTML5, zero external tracking scripts, and verified high-contrast color geometry guarantee fast rendering even on low-bandwidth rural connections across Northland, Canterbury, and the West Coast.
Multi-Platform Compatibility & Testing Matrix
To ensure universal accessibility for all New Zealand workers, employers, and students, our calculation interfaces undergo rigorous continuous testing across all major desktop and mobile operating environments:
| Operating System | Primary Browsers Tested | Screen Readers Audited | Execution Engine Latency |
|---|---|---|---|
| Windows 11 / 10 | Google Chrome, Microsoft Edge, Mozilla Firefox | NVDA 2026.1, JAWS 2026 | < 5 ms (Sub-millisecond RAM) |
| macOS (Apple Silicon & Intel) | Safari 18+, Chrome, Firefox | VoiceOver (macOS) | < 4 ms (V8 / JavaScriptCore) |
| iOS / iPadOS | Mobile Safari, Chrome for iOS | VoiceOver (iOS) | < 6 ms (WebKit) |
| Android 14+ | Chrome for Android, Samsung Internet | TalkBack 15.0 | < 7 ms (Blink) |
| Linux (Ubuntu, Debian, Fedora) | Firefox ESR, Chromium | Orca | < 5 ms (Deterministic Engine) |