Peijie Liu

Peijie Liu

Electrical Engineering Sophomore | Georgia Institute of Technology
890 Curran Street NW, Atlanta, GA 30332 | pliu369@gatech.edu | +1 (470) 510-1408
Portfolio | LinkedIn

Objective

Passionate Electrical Engineering sophomore with extensive PCB layout experience and full-stack electronics development skills. Avionics HITL Responsible Engineer at YJSP. Particularly adept with op-amp analog applications, precision and high-speed ADC/DAC systems, and FPGA HDL programming. Seeking an internship in hardware design starting May 2026.

Education

Georgia Institute of Technology | Atlanta, GA
Bachelor of Science in Electrical Engineering | Expected: May 2028
Minor in Robotics | GPA: 4.00/4.00
Relevant Coursework: Circuit Analysis, Programming for HW/SW Systems, Digital System Design, Signal Processing

Experience

Yellow Jacket Space Program | Georgia Institute of Technology

Avionics Hardware-In-The-Loop (HITL) Responsible Engineer | August 2025 – Present

  • Design, harness and operate the HITL system, which aims to test full avionics system against real-time emulated rocket before launch. Recruited hardware/software engineers to develop automated CI/CD pipeline system. Designing layout for core PCBs.
  • Architected precision DAC system with analog backends and ADC self-calibration to accurately emulate RTD, Valve, PT, TC sensors with sub-millivolt accuracy and temperature compensation for mission-critical validation testing.

Hytech Racing | Georgia Institute of Technology

Electrical Low-voltage Control Engineer | August 2025 – January 2026

  • Revitalized maintenance panel design by switching to Solid-State Power Controllers, improving hot-swap reliability.
  • Mentored new members on PCB layout best practices and hierarchical design workflows on Altium Designer.

Interactive Music Group – Vertically Integrated Projects | Georgia Institute of Technology

Embedded System Engineer | January 2026 – Present

  • Developing AI-powered self-meshing DSP system for interactive musical instruments using ARM Cortex-M7 microcontrollers with custom audio processing algorithms.
  • Laying out customized PCB for drum pad with integrated velocity-sensitive hall detection and multi-zone triggering.

Moondrop Co., Ltd. | Chengdu, China

Technical Content Creator & Engineering Intern | September 2024 – August 2025

  • Curated technical content channel attracting 1M+ views and 10,000+ subscribers, generating consistent $200 monthly revenue through affiliate partnerships with major audio equipment manufacturers.
  • Conducted electroacoustic measurement and research on more than 10 DAC/amplifier circuits, achieving industry-leading performance metrics of -145dB THD and -123dB THD+N at 1kHz using Audio Precision APx555 analyzer.
  • Established direct relationship with CEO, leading to ongoing collaboration on product development and promotional campaigns for new product launches.

Outstanding Technical Projects

μCHIMERA (Micro Composite Harvesting & Integrated Modular Energy Regeneration Array)

Chief Engineer | January 2026

A stackable multi-source energy harvesting system for battery-free wearable and implantable medical devices, integrating solar (5μW-510mW with MPPT), thermoelectric (cold-start at 40mV, operates at 0.2°C ΔT), and piezoelectric (88mW RMS from random vibration) modules with intelligent 50F hybrid storage architecture.

  • Engineered power conversion circuitry featuring <1μA quiescent current and 4-channel stackable energy routing with intelligent priority management and load matching. Designed custom ultra-low-power boost converter with 95% efficiency at micro-watt levels.
  • Implemented cold-start capability for thermoelectric generator operating from 20mV input and solar harvesting optimized for indoor low-light environments (0.12V minimum).
  • Competed in Georgia Tech’s 2026 InVenture Prize, securing $1,000 in seed funding for prototype development and advancing energy-autonomous medical device technology.

Super-FDA (Fully Differential Amplifier)

Individual Product Manager and Developer | April 2025

200W Class AB amplifier achieving -135dB THD and -116dB THD+N with dynamic feedback architecture switching. The circuit can shift dynamically among 4 feedback architectures and 2 input stages, realizing 80Vpp output within ±24V supply and supporting stable remote common-mode feedback to eliminate jamming interference.

  • Engineered innovative MOSFET bias compensation circuit that reduced crossover distortion, achieving -105dB open-loop THD+N through temperature-compensated bias network with ±0.5mV matching tolerance. Implemented servo-controlled DC offset correction maintaining <1mV output offset over 20°C temperature range.
  • Developed high-power linear LDO architecture that achieves 20A output current with 2.5V dropout voltage using paralleled pass transistors and active current sharing. Patent applications pending for LDO architecture and MOSFET compensation circuit.
  • Designed and fabricated 5 PCB iterations using 4-layer stackup with dedicated power and ground planes. Successfully launched product to market generating $1,000+ revenue through direct sales and custom orders from audiophile community.

Technical Skills

Programming: C++, C, RISC-V Assembly, Verilog HDL, MATLAB, Java
Hardware: STM32/AVR MCUs, Artix-7/ZYNQ FPGAs, Analog Components, Oscilloscopes, Spectrum Analyzers, Logic Analyzers
Design Tools: Altium Designer, lcEDA, Vivado, ModelSim, TINATI, PSpice, Keil μVision, STM32CubeIDE, VS Code, MATLAB
Protocols: I²C, SPI, UART, CAN, USB(3.0), Ethernet(6.25Gbps SFP), PCIe 2.0, DDR3
Languages: English (Fluent, TOEFL 108), Mandarin (Native), Japanese (Beginner)

Awards & Achievements

IEEE Robotech 2026 | Georgia Institute of Technology

Champion Team – Chief Electronic Engineer | January 2026

Designed and built full electronics hardware for our remote-controlled parent-subunit quadruped robot system “Tachy-Astroach” within 36-hour time constraint, including power converters, motor control bridges, nrf24l01 wireless communication system with custom protocol, handmade joystick controller, and sensor integration featuring IMU and encoders for adaptive gait control.

InVenture Prize 2026 Semifinalist | Georgia Institute of Technology

μCHIMERA Project – Initiator & Chief Engineer | January 2026

Advanced to semifinals with energy harvesting innovation, securing $1,000 seed funding from Georgia Tech’s Technology Ventures Office for prototype development and commercialization pathway exploration.

Relevant Coursework

Circuit Analysis: DC/AC circuit theory, operational amplifier circuits, network analysis techniques (node/mesh analysis, Thevenin/Norton theorems), phasor analysis, frequency response, Bode plots, Laplace transforms, power and transient analysis. Laboratory work included designing and testing multi-stage amplifier circuits, active filter implementations, and power supply regulation systems.

Programming for Hardware/Software Systems: C programming, RISC-V & MIPS assembly, data structures, memory management, operating systems fundamentals, embedded systems programming, performance optimization, compiler design principles, and ARM microcontroller programming. Completed projects include implementing custom memory allocator, building RISC-V assembler, and developing real-time task scheduler.

Digital System Design: Design and testing methodologies for digital computing systems using fundamental logic elements, Boolean algebra simplification and arithmetic operations, implementation of sequential and combinational logics including latches, registers, decoders, and counters. Completed state machine design, datapath architecture, and assembly language programming projects.