// Payment systems
We design, build, and certify payment applications for POS terminals, mPOS devices, and payment accessories. From kernel integration to acquirer host connectivity — we handle the full payment stack.
// What we build
Full payment application development for countertop and portable POS terminals. EMV contact and contactless transaction processing, PIN entry, receipt generation, and end-of-day settlement.
Native Android applications for smart POS terminals and mPOS devices. Java-based payment flows with BLE peripheral connectivity, NFC tap-to-pay, and EMV kernel integration.
Integration of EMV Level 2 contact and contactless kernels. Configuration of terminal and application parameters, certification test preparation, and scheme-specific compliance (Visa, Mastercard, Amex).
APACS 70, ISO 8583, and proprietary host protocol implementation. TLS-secured connections, MAC generation/verification, and full message flow handling from authorisation to settlement.
Firmware development for payment peripherals — card readers, PIN pads, receipt printers, and NFC modules. BLE and USB connectivity for integration with POS systems and mobile devices.
Support through EMV Level 2, Level 3, and acquirer certification. Test case preparation, debugging certification failures, and ongoing compliance maintenance as scheme requirements evolve.
// Track record
// Technologies
// How we work
Define payment flows, terminal platform, acquirer requirements, and certification targets.
Integrate EMV kernels, build acquirer host messaging, and develop the terminal application.
Run EMV L2/L3 test suites, acquirer host simulation, and end-to-end transaction testing.
Submit for scheme certification, resolve any failures, and deploy to live production environments.
Whether you're developing a new POS terminal, integrating with a UK acquirer, or need certification support — we can help.
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