U-Boot & TF-A Bootloader Porting Engineer – Remote Europe

X4 Technology; Polska; Remote; PLN 421,000 - 722,000; Full time

Job summary

X4 Technology is seeking a Contract Embedded Engineer to port U-Boot and Trusted Firmware-A on new Cortex-A SoCs. This fully remote role is open to candidates across Europe, with a start target in January and a single Teams interview.

You will own porting work across the full boot chain, from SPL to OS, including EL3/PSCI/SMC handling and TrustZone integration. Real hands-on porting is essential; CVs without hands-on porting will not match.

Qualifications

• Proven hands-on U-Boot porting and bring-up on a new SoC.
• Extensive TF-A experience on Cortex-A platforms.
• Strong C and ARMv8 low-level debugging skills.
• Upstream contributions to U-Boot or TF-A are a plus.
• Based in Europe and eligible for a remote contract.

Responsibilities

• Port U-Boot to new silicon including SPL and DDR init.
• Bring up the boot chain from SPL to the OS.
• Port TF-A (BL1/BL2/BL31) on Cortex-A MPU incl EL3/PSCI/SMC.
• Assist secure-world integration and chain-of-trust.

Skills

U-Boot porting

TF-A

ARMv8

C programming

Security/TrustZone

Job description

X4 Technology is seeking a Contract Embedded Engineer to port U-Boot and Trusted Firmware-A on new Cortex-A SoCs. This fully remote role is open to candidates across Europe, with a start target in January and a single Teams interview.

You will own porting work across the full boot chain, from SPL to OS, including EL3/PSCI/SMC handling and TrustZone integration. Real hands-on porting is essential; CVs without hands-on porting will not match.