Jorge A. Ramirez-Ortiz
Software Engineer
GMT+1, United Kingdom
Summary
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RockstarJorge A. Ramirez-Ortiz is a seasoned software engineer with 12 years of experience specializing in low-level embedded systems, secure boot and trusted execution environments. Based in the UK (GMT+1), he is an active open-source contributor to prominent projects like OP-TEE and ARM Trusted Firmware, where he implemented hardware-backed key provisioning, secure channels, true RNG support, and platform bring-up for Renesas R-Car Gen3 Poplar. His work spans hardware interfaces, power management, eMMC/I2C drivers, and non-volatile security storage (eFuse/BBRAM), demonstrating a rare blend of security engineering and platform bring-up expertise. Colleagues rely on him for hard-to-reproduce, security-critical functionality such as HUK handling and authenticated boot processes. He frequently contributes across ecosystems including Zephyr, Xenomai, FFmpeg and TF-A, reflecting deep domain knowledge in real-time and multimedia platforms.
12 years of coding experience
Github Skills (25)
architecture10
it-security10
c-programming10
abstraction-layer10
power-management10
security10
i2c10
u-boot10
sys10
cryptography10
boot10
arm10
embedded10
architectures10
hal10
Programming languages (9)
Github contributions (5)
OP-TEE/optee_os
Feb 2020 - Jan 2023
Trusted side of the TEE
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:705 reviews, 165 commits, 144 PRs in 2 years 11 months
Contributions summary:Jorge primarily contributed to low-level system security by implementing and maintaining the hardware-backed key provisioning system for the trusted execution environment. They introduced support for a true random number generator and established a secure channel protocol for the platform. Furthermore, the user developed and refined the non-volatile memory (eFuse and BBRAM) access interface to secure critical system components and ensured the integrity of security-critical boot processes and also provided the authentication functionality to the platform. The user also improved the handling of the hardware unique key (HUK).
trustedtee
ARM-software/arm-trusted-firmware
Jun 2017 - Apr 2022
Read-only mirror of Trusted Firmware-A
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:25 commits, 12 PRs, 88 comments in 4 years 10 months
Contributions summary:Jorge contributed significantly to the Renesas R-Car Gen3 arm-trusted-firmware repository by adding support for the Poplar E-96Boards platform. Their work involved initializing the platform, including documentation, boot sequence, and low-level hardware interfaces. The user also implemented power management features and integrated various drivers such as those for the display, emmc, i2c dvfs, and watchdog, which indicates strong experience with hardware and embedded systems development.
firmware
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