Embedded Software Engineer

The Embedded Software Engineer is responsible for designing, developing, and maintaining software that operates directly on hardware systems. This role involves working closely with hardware engineers to ensure seamless integration and optimal performance of embedded systems.

The candidate should have strong experience with:

• Embedded C (mandatory)
• Bare-metal and RTOS-based firmware
• ARM Cortex-M microcontrollers
• Interrupt-driven architectures
• DMA, timers, watchdogs, GPIO, UART, SPI, I2C
• Bootloaders and firmware update systems
• Debugging with J-Link/SWD/GDB
• Low-power firmware design

The Silicon Labs EFR32 family is ARM Cortex-M33 based, so Cortex-M experience matters directly.

• Z-Wave
• Proprietary sub-GHz protocols
• Mesh networking
• Low-power wireless sensor networks
• RF coexistence
• OTA firmware updates over wireless

Especially valuable:

• Experience with Silicon Labs wireless SDKs
• Experience modifying MAC/PHY behavior
• Experience implementing custom protocol layers, * Simplicity Studio
• Silicon Labs Gecko SDK
• Silicon Labs wireless stack APIs
• Z-Wave 700/800 series
• SmartStart
• S2 security
• OTA DFU mechanisms
• Zniffer packet analysis
• PTI packet tracing

Security Skills (Increasingly Important)

Modern wireless products require serious security awareness.

Required or Preferred

• Secure boot
• Firmware signing
• Key provisioning
• Encrypted OTA updates
• Secure pairing/authentication
• Replay protection
• Secure storage of credentials

Especially important if:

• HVAC
• industrial
• smart home
• access-control
• infrastructure markets

Strongly Preferred

• Modular firmware architecture
• State-machine design
• Event-driven systems
• Git workflows
• CI/CD for firmware
• Automated testing
• Hardware abstraction layers
• Documentation discipline

Need experience working on wireless communication experience, e.g. RF/Sub GHz/ Z-wave