Project case study · Compliance SaaS · IoT hardware

Accordium: a compliance operating system for food-regulated industries.

A full-stack compliance platform covering daily checklists, IoT cold-chain monitoring, Voice Note transcription and multi-site reporting, built to satisfy R638, HACCP, ISO 22000 and five other regulatory frameworks.

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Regulatory frameworks: 8
Industry verticals: 4
User role levels: 3
Sensor-to-cloud pipeline: IoT

The problem

Food businesses were managing compliance on paper, clipboards and spreadsheets. Under R638 and HACCP, every site needs daily temperature logs, completed checklists, health and safety meeting records and supplier documentation, every day.

For multi-site operations (wholesale distributors, agricultural processors, hospitality groups) it scaled badly. Head office had no real-time view of which sites were compliant, which checks had been missed, or where the cold chain had been broken.

Sensor to compliance record. No Wi-Fi required.

The hardware was the hardest engineering problem. Shops and kitchens have notoriously unreliable Wi-Fi, so I designed a radio layer that runs entirely independently of the store network: sensors talk to an in-store hub over LoRa, and the hub forwards data to the cloud over its own uplink.

System architecture

Sensor nodeESP32 · wireless
LoRa radio915 MHz · no Wi-Fi
In-store hubRaspberry Pi · local
Cloud platformNext.js · FastAPI · Railway
Compliance dashboardMulti-site · exportable

Next.js · FastAPI · Python · PostgreSQL · Railway · ESP32 · LoRa / MQTT · Raspberry Pi · Vercel

[PLACEHOLDER]

Photo: sensor node inside a fridge, and the hub

Real hardware, plus one dashboard screen crop.

What the platform does

Smart checklists and temperature logs
Daily, weekly, monthly and ad-hoc templates guide teams through the right checks at the right time, with offline support.
Voice Notes on every checklist
Any checklist can capture a Voice Note, transcribed automatically. Structured records without extra admin.
Real-time IoT temperature monitoring
Wireless sensors inside fridges and freezers send readings to an in-store hub. No cabling, no Wi-Fi dependency.
Compliance scores and multi-site overview
Managers see compliance percentages, missed checklists and flagged readings. Head office sees every site at once.
Audit-ready exports
Clean compliance evidence for any site and period: cold-chain audit trails for R638, HACCP and ISO 22000.
Staff management and biometric signing
Staff linked to sites and roles, with biometric signing for key checklists.

Built around the frameworks auditors use

The data model and reporting layer follow the specific evidence requirements of each framework, for operations in wholesale and distribution, agriculture, mining, and hospitality.

R638
HACCP
ISO 22000
ISO 9001
ISO 14001
ISO 45001
OHS Act
Mine H&S Act

My role: hardware to SaaS

I designed and built the complete platform: firmware on the ESP32 sensor nodes, the LoRa radio layer, the Raspberry Pi hub software, the Next.js / FastAPI cloud application, and the compliance reporting and export pipeline. End-to-end product engineering across hardware and software.

The same sensor-to-dashboard pattern applies to any regulated operation with physical assets to monitor: healthcare facilities, pharmaceutical cold chain, export food processing, industrial safety and facilities management.

How I approach automation