About Us
Engineering software, hardware and database solutions for contactless card and NFC systems.
Who We Are
CJS Technology is an engineering firm specialising in software, hardware, and database solutions with deep expertise in RFID smart cards, NFC mobile transactions, and Bluetooth Low Energy technology.
Our team has extensive experience across diverse sectors including bespoke production data systems, power management, concessionary transport systems, and smart exhibition equipment. We design low-power communication devices used in applications ranging from environmental monitoring to programmable smart tags.
What We Do
We deliver complete solutions — from initial concept through hardware prototyping, firmware development, PC and mobile applications, to production-ready systems. Our engineering capability spans the full stack:
Hardware Design
Electronics design and prototyping, from schematic capture through to PCB layout and manufacture. All our RFID and NFC reader hardware is designed and manufactured here in the UK, giving us the flexibility to adapt designs to client specifications — whether modifying the housing or the reader functionality itself.
Software Development
Our engineers develop across a broad range of languages and platforms:
- Embedded C — microcontroller firmware for constrained, low-power devices
- .NET / C# — Windows desktop and server applications
- Java / Java Card — cross-platform and SIM card applications
- Android & iOS — mobile NFC and BLE applications
Cryptography & Security
Practical cryptography for real-world deployments. We implement secure key management, challenge-response authentication, and data protection schemes for smart cards, NFC tags, and connected devices.
Smart Ticketing & ITSO
We have significant expertise in ITSO-compliant concessionary transport systems, covering card issuance, reader hardware, back-office integration, and scheme consultancy.
Our Approach
We combine a close working relationship with our sister company, Draycote Technology Ltd, to offer rapid prototyping capability that accelerates time-to-market for new products. Our complete-solution ability means clients work with a single team from concept to completion, reducing integration risk and project overhead.
CJS Technology Ltd — Rugby, Warwickshire, UK