Senior Firmware Engineer: NFC/RFID Security & OTA

Actalent; Broomfield (CO); Hybrid; USD 120,000 - 150,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

401(k) with company match

Paid holidays and vacation

Job summary

Actalent in Broomfield seeks a Firmware Engineer to design, implement, and maintain bare-metal and RTOS firmware for smart card readers and controllers. You will optimize 13.56 MHz RFID/NFC processing and integrate secure mobile credentials.

Join a hybrid team collaborating with hardware and cloud specialists, delivering robust OTA updates, secure communications, and rigorous testing in a fast-paced, security-focused environment.

Qualifications

• 5+ years of embedded software development in C/C++.
• Real-time OS experience (FreeRTOS/Zephyr) on ARM Cortex‑M.
• Proficient with logic analyzers and oscilloscopes.

Responsibilities

• Design, implement, and maintain bare-metal and RTOS firmware for readers and controllers.
• Optimize 13.56 MHz RFID/NFC field processing and protocol support (ISO/IEC, MIFARE/DESFire).
• Integrate secure mobile credentials (Apple/Google Wallet) using SE/SAM.
• Implement secure communication protocols (OSDP, TLS/TCP/IP, RS-485, BLE).
• Develop OTA/FOTA firmware update mechanisms with tamper-resistance.
• Troubleshoot networking across serial, IP, and RF interfaces.
• Collaborate with hardware during bring-up, SI testing, and power management.
• Drive automated testing and CI/CD for HIL environments.
• Lead root-cause analysis for RF/timing/protocol issues.

Skills

Embedded C/C++

RTOS (FreeRTOS/Zephyr)

ARM Cortex-M

Logic analyzers & oscilloscopes

Ethernet & low-level drivers

NFC/RFID security protocols

Job description

Actalent in Broomfield seeks a Firmware Engineer to design, implement, and maintain bare-metal and RTOS firmware for smart card readers and controllers. You will optimize 13.56 MHz RFID/NFC processing and integrate secure mobile credentials.

Join a hybrid team collaborating with hardware and cloud specialists, delivering robust OTA updates, secure communications, and rigorous testing in a fast-paced, security-focused environment.