# Maurice Lee

> Staff Software Engineer @ Databricks

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/mauricelee

## Work Experience
### Staff Software Engineer @ Databricks
Jan 2019 – Present

### Software Engineer @ ORFEO SoundWorks
Jan 2018 – Jan 2018 | Anyang, Gyeonggi-do, Korea
I worked on developing the embedded software for Truly Wireless Stereo (TWS) Bluetooth earbud based on Qualcomm's QCC512X SoC. I ported many features from existing CSR867X sink application and also wrote a significant amount of audio processing code for QCC512X. Notable jobs:
- Wrote a LPC-based speech bandwidth expansion capability in Kalimba DSP asm with necessary controller logic in C.
- Created reusable & tunable mini-batch K-means clustering pipeline to produce vector quantization codebook used in the above bandwidth expansion using Python ML stack (Jupyter, Numpy, Scipy, Scikit-Learn, HDF5)
- Did a lot of research to find and devise the speech bandwidth expansion algorithm with feasible runtime requirements, MIPS and memory-wise.
- Helped my team implement man-machine interface requirements in C and using Sink Application Configuration Tool.
- Worked on integrating touch and proximity sensor ICs via PIO configurations and I2C controlling logic.
- Ported a noise detection-based microphone switching algorithm written in CSR867X into a new Kymera architecture, writing capabilities (unit of audio process) and controlling logic.
- Developed an iOS library to support communication with the earbud via Bluetooth Low Energy, along with a sample application and documentation.
- I also wrote a python-based GUI tool to speed up the flashing/debugging of devices.

### Co-Founder/Lead Software Engineer @ DeepValidation
Jan 2017 – Jan 2018 | Gangnam-gu, Seoul, Korea
I co-founded a data science startup with a few of my UC Berkeley peers. Here's what I did:

- I lead the development and launched the closed beta of a data-driven fashion commerce web service based on React.js/Redux, Express.js and PostgreSQL. It was deployed on Elastic Beanstalk and we used AWS S3 for assets. We integrated with the Korean PGs to handle payments, and we also developed an CRM web app to track/handle orders and deliveries.
- I lead the development of the alpha version of a near-realtime e-commerce recommendation service based on ELK stack (Elasticsearch, Logstash, Kibana), PySpark, AWS Lambda and AWS Kinesis.
- I lead the development of the alpha version of DeepStudio, a browser-based data wrangling platform based on React.js/Express.js, Django, PostgreSQL and Python ML stack (Numpy, Scikit-Learn, Pandas, etc...)

### Undergraduate Student Instructor for CS61B (Data Structure and Algorithms) @ UC Berkeley
Jan 2016 – Jan 2017 | UC Berkeley
Experience with lecturing to medium-sized (20~30) group of students, teaching Java and concepts relevant to data structures and algorithms.

### Software Engineer @ Mtreecare Inc.
Jan 2014 – Jan 2015
Android/iOS, JavaScript library, Node.js/Express.js server development. Developed Android application with Bluetooth Low Energy connection with embedded device and data synchronization between remote server and local SQLite3 database (DAO). 

Experience with writing webview-based hybrid application SDK bridging Javascript with iOS/Android native features (Bluetooth, NFC, Camera, and etc). Designed the API conforming to W3C Recommendation/Working Group API's. Managed JavaScript build and dependencies with Grunt.js, Bower.js, and npm. Managed company server's docker scripts/images/containers. 

Performed multivariate polynomial regression analysis for estimating body temperature from raw sensor values of a thermometer device.

Experience with writing embedded software for TI MSP430 and CC2541. Wrote interrupt handler for MSP430 to control GPS/GPRS module via 2-wire UART and handle application logic. Implemented Firmware over the Air (FOTA) for MSP430 and CC2541.

### Developer @ Team4Up
Jan 2014 – Jan 2014 | Seoul, Korea
Developed and released EDM music streaming Android mobile application with SoundCloud API and Parse.com (1,000 - 5,000 downloads). Constructed Node.js/Express.js based web application for admin interface. Experience with Google Analytics for user behavior analysis and service performance measurement.


## Education
### Bachelor of Arts (B.A.) in Computer Science and Statistics
University of California, Berkeley


## Contact & Social
- LinkedIn: https://linkedin.com/in/mglee72

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Source: https://flows.cv/mauricelee
JSON Resume: https://flows.cv/mauricelee/resume.json
Last updated: 2026-04-05