Automotive Bare-Metal Bootloader Expert | Secure OTA & DoIP

Pentangle Tech Services | P5 Group; Dearborn (MI); On-site; USD 120,000 - 170,000; Full time

Job summary

Pentangle Tech Services | P5 Group seeks a Bare-Metal Bootloader Expert to design and implement secure bootloaders for automotive ECUs. You will work across hardware bring-up, low-level firmware, and cryptographic validation, targeting security, speed and reliability.

You will collaborate with software, system, and cybersecurity teams, using C/C++ on NXP S32K3, STM32U5, and Realtek MCUs, and you will document designs, test plans, and performance improvements for DoIP Ethernet stacks.

Qualifications

• 5–10 years of bootloader development for embedded or automotive platforms.
• Proficiency in C/C++ for low-level and bare-metal development.
• Strong hands-on experience with NXP S32K3, STM32U5, and Realtek MCUs.
• Excellent understanding of Ethernet, TCP/IP, and DoIP protocols.
• Proven experience in secure boot, firmware encryption, and digital signature validation.
• Knowledge of AUTOSAR, ISO 14229 (UDS), and ISO 21434 (Cybersecurity) is a plus.

Responsibilities

• Design and implement bare-metal bootloaders for automotive ECUs focused on security, speed, and reliability.
• Develop and maintain secure firmware flashing and update mechanisms, including OTA and diagnostic updates.
• Work with NXP S32K3, STM32U5, and Realtek microcontrollers for system bring-up and low-level bootloader design.
• Integrate and validate Ethernet-based communication stacks, including DoIP.
• Implement secure boot and cryptographic validation for firmware images.
• Collaborate with software integration, system, and cybersecurity teams to meet technical and safety requirements.
• Perform debugging, performance tuning, and optimization on embedded targets.
• Prepare detailed technical documentation, design specifications, and test plans.

Skills

C/C++

Bootloader development

Embedded systems

Ethernet DoIP

Cybersecurity awareness

AUTOSAR knowledge

Education

Bachelor’s or Master’s in Electrical/Computer Engineering

Tools

S32 Design Studio

STM32CubeIDE

GCC

JTAG/SWD debugging

Job description

Pentangle Tech Services | P5 Group seeks a Bare-Metal Bootloader Expert to design and implement secure bootloaders for automotive ECUs. You will work across hardware bring-up, low-level firmware, and cryptographic validation, targeting security, speed and reliability.

You will collaborate with software, system, and cybersecurity teams, using C/C++ on NXP S32K3, STM32U5, and Realtek MCUs, and you will document designs, test plans, and performance improvements for DoIP Ethernet stacks.