Zhaoyang Shi

Dynamic Software Developer with proven experience at NOKIA, adept in deploying robust testing frameworks using TypeScript and enhancing backend functionalities with Java for TD BANK. Excelled in automating tests, boosting efficiency, and fostering team collaboration. Skilled in Java, TypeScript, and problem-solving, demonstrating a strong commitment to quality and innovation.

• OPERATING SYSTEM (C, ASSEMBLY LANGUAGE)
  Created a multi-core 64-bit operating system entirely from scratch for the x86 platform.
  Main Tasks:
  Implemented bootloader in assembly language for operating system bootstrapping.
  Achieved x86 CPU mode transitions: from real mode to protected mode, and then to long mode.
  Enabled multi-core processor boot-up and interrupt handling via APIC.
  Implemented various synchronization mechanisms such as spin locks, semaphores, etc., using GCC inline assembly.
  Developed memory management module, including physical memory allocation and reclamation, virtual memory management and establishing virtual to physical memory mappings via page tables.
  Implemented process module including process waiting, scheduling, context switching, etc.
  Github: https://github.com/Zhaoyang0011/OperatingSystem.git
  Personal Gains:
  Deepened understanding of various low-level machannisms of operating systems. Gained familiarity with assembly language. Developed insights into the characteristics of various low-level hardware during the development process. Acquired a clearer understanding of compilation, linking, and related steps in program compilation. Enhanced proficiency in tools such as Makefile, GDB, VSCode, etc.