Senior Firmware Developer

Beschreibung

Job Zusammenfassung In dieser Rolle entwickelst du Firmware in C++ für ARM Cortex-M Mikrocontroller, integrierst Smartphone-basierte Credentials und implementierst Sicherheitsprotokolle für mobile Anwendungen und Embedded Systeme. Job Zusammenfassung In dieser Rolle entwickelst du Firmware in C++ für ARM Cortex-M Mikrocontroller, integrierst Smartphone-basierte Credentials und implementierst Sicherheitsprotokolle für mobile Anwendungen und Embedded Systeme. Deine Rolle im Team 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). 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. Unsere Erwartungen an dich Qualifikationen Security: Familiarity with applied cryptography in embedded systems (secure messaging, AES/HMAC, key usage), secure elements / SAM integration, secure boot, and OTA. Languages: Good German and strong English skills. Erfahrung 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). Tools: Debugging skills (JTAG/SWD, logic analyser) and embedded CI/CD experience. 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. Unser Angebot 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 & LinkedIn 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 events. Benefits Gesundheit, Fitness & Fun 🚲 Jobrad 👩‍⚕️ Betriebsarzt 🎳 Team Events Essen & Trinken 🍏 Frisches Obst ☕️ Kaffee, Tee o. Ä Work-Life-Integration ⏰ Flexible Arbeitszeiten Themen mit denen du dich im Job beschäftigst IoT Cyber/Security Kryptographie Metadaten Level: Senior Job Feld: Embedded Anstellung: Vollzeit Vertragsart: Unbefristetes Dienstverhältnis Arbeitsmodell: Hybrid, Onsite Unternehmenstyp: Etablierte Firma Branche: Handwerk, Gewerbe Ort: Unterföhring | 85774 | Deutschland

Tech Stack