Senior Firmware Developer — Smartcard & Mobile Credentials; m​/f​/d

Position: Senior Firmware Developer — Smartcard & Mobile Credentials (m/f/d)
Location: Germany

Senior Firmware Developer — Smartcard & Mobile Credentials (m/f/d) page is loaded## Senior Firmware Developer — Smartcard & Mobile Credentials (m/f/d) locations:
Unterföhring, Germ anytime type:
Full time posted on:
Posted Todayjob requisition :
JR35595
** Unlock the future of digital security with us!
** We are a pioneer in digital locking technology and, with a team of over 550 employees, we ensure that people's lives become safer and more comfortable. We don't just open doors; we open paths to more protected and intelligent living spaces. We achieve this through continuous innovation, team spirit, and a deeply rooted passion for the industry.

As a
** Senior Firmware Developer**, you will design and implement C++ application firmware on microcontrollers (ARM Cortex-M) running an RTOS. Your focus will be on application-level features and the integration of physical and smartphone-based credential processing flows (Mifare DESFire, HCE, mobile wallets).
** WHAT YOU CAN EXPECT**
* ** Firmware Development:
** Implement C++ application-layer firmware on an RTOS (tasking, IPC, power-aware scheduling).
* ** Credential Logic:
** Develop application logic for existing (Mifare DESFire) and future standards: app/file model, access conditions, personalization, and lifecycle management.
* ** Connectivity & Workflows:
** Integrate NFC/BLE/WLAN stacks and mobile credential workflows (provisioning, HCE, revocation).
* ** Security Implementation:
** Interface with secure elements / SAMs for key storage and transaction offload. Implement secure boot, signed/encrypted OTA, and application-level runtime protections.
* ** Software Maintenance:
** Enhance and maintain internal software suites (C++, C#).
* ** Testing & CI/CD:
** Build tests and CI/CD artifacts; use protocol sniffers and hardware debuggers for validation.
* *
* Collaboration:

** Work closely with mobile, backend, hardware, and QA teams; produce technical and security documentation.
** WHAT YOU BRING**
* *
* Experience:

** + 5 years of embedded firmware experience.
* ** Core

Skills:

** Strong C++ experience for microcontrollers in resource-constrained environments and practical RTOS experience (Zephyr is an advantage).
* ** RFID/NFC:
** Hands-on RFID / NFC experience (ISO 14443, Mifare DESFire EVx preferred).
* ** Mobile Credentials:
** Experience with smartphone credential flows (mobile wallets, HCE, provisioning).
* ** Security:
** Familiarity with applied cryptography in embedded systems (secure messaging, AES/HMAC, key usage), secure elements / SAM integration, secure boot, and OTA.
* ** Tools:
** Debugging skills (JTAG/SWD, logic analyser) and embedded CI/CD experience.
* *
* Languages:

** Good German and strong English skills.
* ** Nice to have:
** Deep Mifare DESFire EVx personalization experience, low-power design, mobile platform SDKs/APIs, knowledge of access control standards, security compliance (CRA, NIST, ETSI), and familiarity with Git, Jira, and embedded test frameworks.
** OUR OFFERING**
* ** Modern Tech Stack & Impact** **//
** Work in a high-innovation, security-relevant environment with professional test infrastructure and the latest tools.
* ** Work-Life-Balance** **//
** Flexitime model including time off in lieu, remote work possible (1 day/ week), 30 days vacation without probationary period ban.
* ** Growth & Development** **//
** Structured & inspiring onboarding process, hands-on training, access to Busuu, Allegion Academy & Linked In Learning, mentoring on development and career paths
* ** Sustainable mobility** **//
** Cost-effective leasing of job bikes and e-bikes
* ** Health** **//** €30 gross fitness allowance per month, employee assistance program for all life issues, free drinks & fresh fruit.
* ** Family & More** **//
** Up to €250 gross childcare allowance per month, company pension subsidy (€40 plus 20% of the conversion amount), exclusive employee discounts
* ** Culture** **//
** Inspiring spirit, flat organizational structures, a bright team from 17 nations, great helpfulness & cohesion, many great eventsThen
** Lea Tikvic
** is looking forward to getting to know you! If you have any further questions, please contact usSimons

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