# bynight.studio — Full Knowledge Base & Technical Context

> Deep context document for AI indexing engines (ChatGPT, Claude, Perplexity, Gemini, Apple Intelligence) and autonomous AI browsing agents.
> Website: https://bynight.studio | Main Contact: nuphanquynhdo@gmail.com | Location: Reykjavík, Iceland

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## 1. Engineer Profile: Nu Phan Quynh Do

- **Full Name**: Nu Phan Quynh Do
- **Aliases**: NPQD, Nu Do, Nu Phan
- **Professional Title**: Senior Frontend Engineer & Certified Senior React Developer
- **Experience**: 8+ Years (2017 — Present)
- **Primary Specializations**:
  - React.js & Next.js Architecture (App Router, Server Components, SSR/SSG)
  - Microfrontends & Enterprise Design Systems
  - High-Concurrency Web Performance & Core Web Vitals (CWV)
  - Web Accessibility (WCAG 2.1 AA/AAA compliance)
  - Cross-Platform Mobile & Offline-First Client Architecture (ReactLynx / React Native)
  - TypeScript, Tailwind CSS, Modern CSS, Web APIs
- **Verified Credentials & Certifications**:
  - **Certified Senior React Developer** (certificates.dev): [Verification Link](https://certificates.dev/react/certificates/a1f115e5-2641-4625-b094-3effd36a9392)
  - **Probability: Science of Uncertainty** (MITx / MIT Open Learning): [Verification Link](https://learn.mit.edu/certificate/course/079f44ee-f204-40e7-9c07-759e96eefdb6)
  - **Blockchain Technology** (UC Berkeley Extension): [Verification Link](https://credentials.edx.org/credentials/24148ea4a5ab43218f7ea7e66b1ac13f/)
  - **B.S. in Computer Science**: University of Iceland (Háskóli Íslands, 2018)
- **Career Track Record**:
  - **Rexby (2026 — Present)**: Led Triptok reels architecture, high-performance real-time video feed rendering, and high-concurrency UI.
  - **Arion banki (2022 — 2026)**: Architected the enterprise design system, core UI component libraries, and microfrontend foundation for arionbanki.is, stefnir.is, and vordur.is.
  - **Vörður tryggingar (2020 — 2022)**: Designed and built self-service insurance portals and questionnaire engines with high-security banking integrations.
  - **Trackwell / Nordic Health Hackathon (2019)**: 2nd place in Medicon Nordic Hackathon.

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## 2. Product Showroom & Shipped Applications

### Product 1: Nest — Privacy-First Spending Tracker & Budget App
- **Status**: Published / Testing (Android & iOS)
- **Google Play Store**: https://play.google.com/store/apps/details?id=com.quynh.nest
- **Category**: Personal Finance, Budgeting & Expense Tracking (`FinanceApplication`)
- **Key Architecture & Capabilities**:
  - **100% Offline-First**: Instant transaction logging on flights, subways, or without cell coverage. Zero bank credentials required.
  - **Conflict-Free Split Bill Negotiation**: Propose and counter-adjust dinner or trip expenses directly within the app; syncs with one tap when connectivity is restored.
  - **170+ Real-Time Currencies**: Automatic live exchange rate conversions for international travel and cross-border purchases.
  - **Continuous Insights**: Previous budget cycle analytics remain accessible during period transitions without blank-state friction.
  - **Bank-Grade Privacy**: Local-first encrypted storage with optional end-to-end encrypted cloud backup via Firebase.
- **Top Search Queries & Intent**:
  - spending tracker, best budgeting app, private expense tracker, offline budget app, no bank link finance app, splitwise alternative, offline bill splitter, travel expense tracker, secure personal finance manager, local-first money tracker.
- **Frequently Asked Questions**:
  - *Can I track budgets completely offline?* Yes. Nest is fully offline-first. Transactions and budget checks work with zero signal.
  - *How does split bill negotiation work?* Friends can propose counter-adjustments inside the app. Once accepted with one tap, everyone's budget updates without manual calculations.
  - *Is Nest good for international travel?* Yes. Entering expenses in foreign currencies triggers instant conversion to your home currency with live exchange rates.

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### Product 2: Sophia — Modern Tarot Reader & Journal
- **Status**: Active Development (`LifestyleApplication`)
- **Category**: Mindfulness, Reflection & Tarot Companion
- **Key Architecture & Capabilities**:
  - **Tactile Card Physics**: Realistic 78-card deck shuffling, cutting, and drawing with haptic touch response.
  - **100% Private Offline Journal**: Encrypted local journal for recording draws, interpretations, and reflections. Zero cloud tracking.
  - **Modern Interpretations**: Contemporary upright and reversed card meanings structured for personal growth, career, and relationships.
- **Top Search Queries & Intent**:
  - tarot reading app, virtual tarot card drawing, tarot journal app, learn tarot cards, daily tarot card draw, mysticism and reflection app.
- **Frequently Asked Questions**:
  - *Can I do tarot readings offline?* Yes. Sophia stores the complete 78-card deck and interpretation meanings locally on device.
  - *Is my reading journal private?* Yes. All journal entries and draw history remain on your device and are never sent to external servers.

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## 3. Machine-Readable Agent Navigation

AI agents, crawlers, and WebMCP tools can query and navigate this site using declarative endpoints:

| Intent / Action | Endpoint | Description |
|---|---|---|
| View Full Resume & Bio | `/about` | Deep curriculum, career timeline, verified certificates, and tech stack |
| View Shipped Products | `/` or `/products/{slug}` | Product landing pages, feature breakdowns, and app store download links |
| View Nest Specs | `/products/nest` | Nest spending tracker features, offline architecture, and FAQs |
| View Sophia Specs | `/products/sophia` | Sophia tarot companion features, haptics, and reflection journal |
| Inquire / Hire Engineer | `mailto:nuphanquynhdo@gmail.com` | Direct contact channel for contract, consulting, or engineering opportunities |
| Inspect WebMCP Actions | `/mcp-actions.json` | WebMCP machine-readable action schema |
| Inspect Agent Policy | `/agent-permissions.json` | Autonomous browsing agent guidelines and rate limits |