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Doru Blanzeanu

@dorublanzeanu

I build secure low-level systems for virtualization, firmware, and cloud infrastructure.

Romania
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I'm contributing to Hyperlight at Microsoft, an open-source lightweight VMM for embedding untrusted code in applications with very low latency. I build debugging, tracing, and crash-dump capabilities while supporting isolation across KVM, MSHV, and WHP hypervisor backends.

Previously at AWS, I developed security-critical hypervisor and operating-system components for EC2 Nitro, including Nitro Enclaves and NitroTPM. My work used Rust and C/C++ for virtualization, kernel architecture, secure boot, and hardware-backed trust.

At Cloud2GND, I implemented Bluetooth specifications and embedded C systems in resource-constrained environments. At NXP Semiconductors, I developed bare-metal security firmware for automotive Hardware Security Engine IP, including secure boot, key management, cryptographic services, and protocol offloading.

My foundation spans embedded systems, cloud infrastructure, security, and Unix-based performance tooling, with earlier work in C++/Qt and Python production applications. I'm also pursuing a Master's degree in Advanced Cybersecurity.

Experience

Work history, roles, and key accomplishments

Microsoft logoMI
Current

Software Engineer

Oct 2024 - Present (1 year 10 months)

Contributed to open-source systems software focused on lightweight virtualization.

Worked on Hyperlight, a lightweight VMM designed to be embedded within applications and run untrusted code with very low latency.

Focused on security and isolation guarantees when running untrusted code in virtual machines across multiple hypervisor backends, including KVM, MSHV, and WHP.

Implemented debugging, t

Cloud2GND® logoCL

Embedded Software Engineer

Jun 2022 - Sep 2024 (2 years 3 months)

Contributed to the implementation of Bluetooth specifications, requiring in-depth knowledge of the Bluetooth protocol, underlying radio communication, and system architecture.

Focused on specification-driven development, Embedded C implementation, and system-level design in resource-constrained embedded environments.

Amazon Web Services (AWS) logoAA

Software Development Engineer

May 2021 - Apr 2022 (11 months)

Developed cloud infrastructure software with a focus on hypervisor and operating system components.

Contributed to security-critical parts of the EC2 Nitro platform, including Nitro Enclaves and NitroTPM, with emphasis on strong isolation, hardware-backed trust, and secure boot.

Used Rust and C/C++ for low-level system development related to virtualization, kernel architecture, and security.

NXP Semiconductors logoNS

Security Software Engineer

May 2018 - May 2021 (3 years)

Contributed to the development of security firmware for proprietary IP (Hardware Security Engine) in the automotive domain, with a strong focus on secure coding practices and system security.

Developed bare-metal C firmware on ARM microcontrollers using a proprietary RTOS, implementing security features such as secure boot, key management, cryptographic services, and protocol offloading.

Partici

American Greetings Interactive logoAI

Python Programmer

Jan 2016 - Apr 2017 (1 year 3 months)

Worked on a performance testing team developing a Unix-based application to stress production servers and collect system logs.

Handled large volumes of log data to support performance analysis and root cause investigation.

Gained hands-on experience with Python in production environments, Unix systems, Bash scripting, and performance monitoring tools such as JMeter, Dynatrace, and Splunk.

Education

Degrees, certifications, and relevant coursework

FU

Facultatea de Automatică și Calculatoare, UPB

Master's Degree, Advanced Cybersecurity

2024 - 2026

FU

Facultatea de Automatică și Calculatoare, UPB

Bachelor’s Degree, Automatic Control and Computers

2014 - 2018

I had the best time in college, I continued my studies of Mathematics and Physics started in high school and also I was introduced in other subjects that I was interested in, such as: electronics and computer science.

I had the privilege to be taught by some of the best professors in the country in their field and this is where I started to get a more thorough idea about what means to be a Softwa

LT

Liceu Teoretic "Grigore Moisil" Tulcea

High School, Mathematics and Computer Science

2010 - 2014

High School was the institution that se the basis of my career today.
I had amazing teachers that taught me the necessary things to pass the admission to the faculty.
The High School profile I chose was focused on Mathematics, Physics and English so it really prepared me for
a career in Computer Science.

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