Jobs · Engineering · Washington

Principal Security Engineer

Microsoft · Redmond, WA · 3 days ago
HybridEngineering$143k–$275k/yrFull-time

Responsibilities

  • Designed and developed firmware for Hardware Security Modules (HSMs), security accelerators, and Root of Trust (RoT) solutions.
  • Contributed to all phases of product development, including architecture, design, implementation, integration, and validation for security-focused SoCs.
  • Defined and implemented bootloader and embedded kernel architectures to support secure and reliable system initialization.
  • Developed secure firmware supporting security protocols, key management, attestation, and cryptographic services.
  • Implemented and optimized secure boot flows to ensure trusted device startup and firmware integrity.
  • Wrote, debugged, and optimized embedded firmware with a focus on performance, reliability, and security.
  • Diagnosed and resolved complex firmware issues through root cause analysis, debugging, and troubleshooting.
  • Applied cryptographic principles and security protocols to protect embedded systems and hardware assets.
  • Developed firmware for embedded devices running Real-Time Operating Systems (RTOS), utilizing OS primitives such as task scheduling, interrupts, threading, synchronization, and memory management.
  • Collaborated with cross-functional hardware, software, and security engineering teams to deliver secure embedded solutions.
  • Ensured firmware compliance with security requirements and industry best practices for trusted computing environments.

Qualifications

  • Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings: Microsoft Cloud Background Check.
  • 10+ years of professional experience designing, developing security critical code.
  • Familiarity with standard Cryptography algorithms.
  • Familiarity with secure boots, attestation, recovery.
  • Problem solving, debugging, and troubleshooting skills, advanced design and development skills.
  • Experienced with ROM, Bootloader, and embedded runtime development.
  • Ability to debug and resolve issues spanning multiple subsystems.
  • Proven and demonstrable skill in Rust, C, C++.
  • Experience in working in pre silicon environments.
  • Familiar with PCIe, NVME, I3C, I2C, SPI, SPI-FLAS.

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