Embedded Software Engineer - MST

Job Title

Embedded Software Engineer

Job Duration

12+ months contract

Est.

Pay Range

$70 to $75/hr on w2

Work Type

On Site

Overview/ Responsibilities

Description

• 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.
• 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.

Wireless Protocol Expertise (Critical)

This is where average embedded developers get separated from actual RF/wireless experts.

Required Wireless Experience

You should strongly prefer candidates with experience in

• 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

Silicon Labs / Z-Wave Specific Skills

Because this is not just generic embedded work.

Strongly Preferred

Experience with

• 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