Xueyi Li Email & Phone Number

Nashville, TN, US

Nashville, Tennessee, United States

• Mentoring and coaching team members, and help them learn, grow and achieve their goals.
• Developed vacuum static/dynamic pressure monitoring algorithm, architectured sync/async status reporting mechanism from stm32 to arm32 across RS485.
• Designed and implemented flow rate monitoring and clog/bubble detecting algorithm on stm32, provided HTTP(synchronous) and WebSocket(asynchronous) APIs to SW.
• Originated bash script to prototype cell analyzer loader to directly control homing, moving, sorting, etc.
• Architectured and implemented bioshaker control, including shaking, gripping and temperature, from prototype to completion, using bash, C/C++.

San Jose, California, United States

• Developed Flow Cytometer cell sorter subsystem from scratch, optimized performance and robustness of RS485 serial communication by implementing adaptive window algorithm.
• Simplified system architecture, replaced synchronous responses with asynchronous messaging pattern, greatly increased cell sorting performance from previous **67s to ~35s**.
• Redesigned and decoupled controller and simulator software layers, more readable and portable, preventing duplicating effort & time of entire firmware team, facilitated QA team with their daily tests.
• Refactored and rearchitectured fluidics control subsystem, originated a lookup table to convert all the fluidics modes, replaced **>1000-lines** of duplicated code into single **150-lines** header file.
• Optimized firmware build process from **~45 minutes** to **<10 minutes** with Makefiles/boost build(b2).
• Automated release and deployment process for QA team using shell scripts, greatly improved their productivity.

Sunnyvale, California

• Designed & implemented BACnet server layer on top of BACnet Stack(0.9.1)
• Implemented BACnet/IP(BIP) and Master Slave/Token Passing(MSTP on RS-485) application service.
• Refactored data management layer, restructured more than ten thousands of lines of redundant code.
• Implemented sqlite3 database read/write abstract layer by creating portable utility wrapper functions.
• Designed & implemented data sharing service that allows information exchange across BACnet devices.
• Implemented dynamic memory consumption and memory leaking checking tools(with Valgrind) in bash which resolved major memory leaking issues.

Sunnyvale, California, United States

• Designed and implemented multi-threaded video streaming service for 2D camera and 3D cameras.
• Accomplished multi-streaming solutions in distributed system with socket and open source libraries.
• Designed and implemented positioning light control system with socket servers and client using Arduino.
• Implemented messages/events communication mechanism in multi-threaded system using Redis.
• Integrated computer vision algorithms for object identification and tracking.
• Work jointly with all the cross-functional team members to achieve the best performance of the product.

Fremont, CA, United States

• As the only one Software Engineer I
• Customized Jam STAPL Player to program FPGA in a JTAG chain with text-based Jam file.
• Implemented FTDI chip driver and Inter-Integrated Circuit (I2C) shared library on Raspberry Pi.
• Developed python wrapper to call the I2C shared library, including read/write/convert APIs.
• Implemented services to monitor memory consumption and to manage log rotations.
• Design and Implemented Low Voltage signal detection and protection application on PIC MCU.

Shanghai, China

• Developed Volcano Target Package(VTP) sample project for various customers.
• Conducted on-site presentation, training, system integration and troubleshooting.
• Demonstrated technical assistance on Automotive CAN subsystem implementation and integration.
• Strengthened sustained relationships with global customers. Improved 20% VTP market share in China.

Shanghai, China

• Implemented critical subsystems such as Flash Boot-loader, Inter-Processor Communication Layer(IPCL, DMA), Back-light Dimming Control and Multi-Media, which are portable, readable and consistent.
• Accelerated sibling projects' development by 3-5 months via porting those subsystems I developed.
• Accomplished Memory Check components' implementation, familiar with link file and map file.
• Managed and accomplished more than 8 mechanism replacement projects independently in 2011.
• Maintained good relationships with customers. Won the "Best Coordinator Award" in 2011.

Master'S Degree, Biomedical Engineering

Bachelor'S Degree, Electronic And Information Engineering