Case Studies

Selected architecture and delivery engagements.

Security Events → SMS Notifications

Independent architecture + build engagement

Gallagher Command Centre ↔ Telstra Messaging API

The Problem

The client's physical security platform (Gallagher Command Centre) generates critical events — door forced, access denied, alarm triggered — but has no native SMS notification capability. Operators needed real-time alerts on mobile, with filtering to prevent alert fatigue.

The Approach

Designed and built an event-driven middleware bridge. The system polls Gallagher's REST API over mutual TLS, processes and deduplicates events through a rules engine, composes human-readable messages, and delivers via Telstra's Messaging API v3.

Architecture

Architecture diagram showing event flow from Gallagher Command Centre through the bridge middleware to Telstra Messaging API Gallagher Command Centre Security Event Source HTTPS / mTLS Event Polling Bridge Event Processor Event Processing Deduplication Filtering Rules Audit Logging OAuth2 / REST SMS Delivery Telstra Messaging API v3 SMS Delivery Operator Dashboard Monitoring & Configuration Certificate Management

Security

All communication uses TLS 1.2+. Gallagher API access is authenticated via mutual TLS client certificates. Telstra API uses OAuth2 bearer tokens with automatic refresh. API keys are hashed with PBKDF2 and stored with AES-256 encryption. The system handles minimal personal data — event metadata only, no PII in transit.

Outcomes

Delivered working middleware with an operator dashboard, certificate management, and comprehensive audit logging. Zero-touch deployment capability for non-technical operators. Deployment pending customer rollout.

Extensibility

Architecture supports additional notification channels (email, Teams webhooks), configurable filtering rules, and multi-tenant deployment. Rate limiting and message queuing are built in.

Delivered as an independent architecture + build engagement.

Structured Intake Automation

Product development — own IP

PDF → Digital Workflow Pipeline

The Problem

Clinicians were spending significant time manually transcribing standardised assessment forms from paper and PDF into digital records. The process was error-prone and created workflow bottlenecks.

The Approach

Built a three-stage pipeline: PDF analysis extracts structured data into a canonical schema, which then generates interactive digital forms with real-time scoring and validation. The canonical model decouples the source format from the rendering engine, enabling rapid onboarding of new assessment instruments.

Outcomes

Platform supports multiple assessment types with automated scoring. Clinician-facing interface designed with neurodivergent-first UX principles. Active development — own IP.

Product development — own IP.

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