Engineering Documentation

How we engineer critical infrastructure systems.

A transparent view of the stack behind our enterprise platforms, multimodal AI systems, PWA applications, and hardware-integrated solutions — documented for engineers, technical partners, and due diligence.

System architecture

Six layers, one integrated stack — from client interface down to physical sensors and back.

1 Client Layer

Web browsers, installable PWAs, and mobile-friendly interfaces. Every system is responsive, offline-capable, and installable where appropriate.

HTML5 CSS3 Vanilla JS PWA Responsive

2 Presentation Layer

UI components, data visualisation, and interaction patterns. Charts, maps, slideshows, and real-time status indicators.

Chart.js Leaflet Swiper Service Workers

3 Application Layer

Authentication, business logic, and role-based access control. Everything validated server-side — never trusted from the client.

Firebase Auth JWT OAuth Role-Based Access

4 Data Layer

Real-time NoSQL for operational data, relational databases for structured reporting, and object storage for files and assets.

Firestore MySQL Firebase Storage CSV Export

5 Integration Layer

APIs, real-time streams, and bridges between cloud services and physical devices. WebSockets, REST, and device protocols.

REST APIs WebSockets Python Bridge MQTT

6 Physical Layer

Microcontrollers, sensors, and edge devices deployed in the field. The physical world feeding intelligence back into the system.

Arduino UNO ESP32 Ultrasonic Sensors Current / Flow Meters

Stack by category

Every technology we use, documented with links to official documentation.

🎨

Frontend & PWA

📊

Visualisation & UI

🔐

Authentication & Security

🗄️

Data & Backend

🔌

Hardware Integration

  • Arduino UNO — sensor controller board
  • ESP32 — WiFi + IoT microcontroller
  • HC-SR04 — ultrasonic distance sensor
  • Python — hardware-to-cloud bridge
  • PySerial — serial communication
  • MQTT — lightweight IoT messaging
🤖

AI & Intelligence

  • OpenAI — GPT models, vision, embeddings
  • DeepSeek — reasoning models
  • Ollama — local model hosting
  • ElevenLabs — text-to-speech synthesis
  • Replicate — image / video generation
  • OpenCV — computer vision (EchoShield roadmap)
⚙️

DevOps & Deployment

📱

Domain-Specific Tools

  • Tariff-aware pump automation algorithms
  • AI-based leak detection pipelines
  • Sign language recognition (SIGNAID)
  • Anti-DPI traffic obfuscation (VPN)
  • Staged threat zone classification (EchoShield)
  • Satellite link diagnostics (SatTrack)

Engineering principles

Six principles that shape every system we build — regardless of technology or domain.

Principle 01

Offline-first by default

Field operations don't wait for connectivity. Every system that can be designed offline-capable is. Data queues locally, syncs when the network returns, and never loses a transaction.

Principle 02

Security in the data layer

Client-side checks are for UX, not for security. Every read and write is validated server-side against authenticated identity and role. Firestore and Storage rules enforce this at the source.

Principle 03

Hardware-software convergence

Physical sensors feed digital intelligence. The boundary between the microcontroller and the cloud is an engineering choice, not an architecture gap. Both ends speak the same language.

Principle 04

Role-based access everywhere

Not every user should see every system. Admins see the full portfolio; clients see only their own. Data isolation is enforced at the database level, not by UI visibility alone.

Principle 05

Immutability where it matters

Audit trails must survive scrutiny. Financial records, compliance events, and security-relevant actions are written once and never rewritten. What happened, happened.

Principle 06

Global from day one

Critical infrastructure has no borders. Systems are designed for worldwide deployment — from language, to units, to time zones, to regulatory contexts. No region is excluded by default.

🐙

Built in the open

Every system is publicly versioned on GitHub. Portfolios, prototypes, and production code live side by side — auditable by partners, contributors, and investors.

13 Public Repos
12 Working Systems
6 Industry Domains
3 Hardware-AI Systems
View GitHub Organization Browse Systems

Building with this stack?

Whether you're a technical partner, an engineering firm considering white-label, or a developer interested in contributing — we'd like to hear what you're working on.

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