# Edward Choi

> Staff Software Engineer @ Safe Security | MS EECS @ UC Berkeley ‘22

Location: San Jose, California, United States
Profile: https://flows.cv/edwardchoi

## Work Experience
### Staff Software Engineer @ Safe Security
Jan 2025 – Present | San Jose, CA
(Balbix was acquired by SAFE)

### Staff Software Engineer @ Balbix
Jan 2024 – Present | San Jose, California, United States

### Senior Software Engineer @ Balbix
Jan 2022 – Jan 2024 | San Jose, California, United States

### Graduate/Undergraduate Researcher @ UC Berkeley Electrical Engineering & Computer Sciences (EECS)
Jan 2020 – Jan 2022 | Berkeley, California, United States
- Collaborated with Microsoft Research to build ThreatKG, an AI-powered platform that constructs a threat knowledge graph for automated cyber threat knowledge gathering and management using open-source cyber threat intelligence (OSCTI) data
- Designed and implemented a robust multi-threaded OSCTI report crawler framework (Python) to crawl from 40+ major security websites collecting a total of 143K+ reports and operating at a crawling rate of 325+ reports/second•Trained and deployed machine learning models (SKLearn) to preserve threat related articles predicting with 90+% accuracy and F1
- Built a Bidirectional LSTM-CRF neural network using Pytorch to recognize security entities (e.g. malware, bad actors) achieving 95% accuracy and F1
- Lead Developer for ThreatKG UI web app (React, D3.js, Flask) to facilitate threat analysis and exploration from Neo4j graph database containing 347K+entities and 1.7M+ relations; includes diverse searching capabilities through Cypher queries and Elasticsearch
- Contributed to research paper writing leading to publications at SIGMOD 2021 and VLDB 2022

### Software Engineer Intern @ Passfolio
Jan 2019 – Jan 2022 | San Francisco Bay Area

### Software Developer Project Lead @ Pioneers in Engineering
Jan 2017 – Jan 2022 | Berkeley, California, United States
- Developed Dawn (Typescript, React, Redux, Redux Sagas, CSS), a web application used by 600+ high school students to code and interact with their robots for a robotics competition offered to local underserved high schools in the Bay Area
- Used Protobufs and Node.js websockets to process real-time robot peripheral data and display on frontend peripheral dashboard•Taught comprehensive web development curriculum to incoming developers (HTML/CSS/Typescript, React, Redux, Git)
- Advised 6 project managers and guided 30+ developers across span of 4 years through guides, pair programming, documentation and code reviews

### Software Engineer Intern @ Lexxify Inc.
Jan 2018 – Jan 2019 | Berkeley, California, United States
Worked in four-person team on Lexxify (React, Redux, CSS, Firebase), a web application to teach 1,200+ languages
- Created custom autocomplete, pagination, and video UI components and developed 10+ responsive pages used by 150+ weekly users
- Supported client publishing of hundreds of daily recorded audio/video translations and uploaded to Google Cloud Storage

### Academic Intern @ UC Berkeley Division of Data Sciences
Jan 2018 – Jan 2018 | Berkeley, California
- Lab Assistant for Introduction to Data Science course (CS C8)
- Assist lab of 30 students with checkoffs by asking questions and clarifying confusing topics
- Teach basic Python programming and statistical concepts such as sampling, probability, and prediction

### Computer Lab Assistant @ UC Berkeley College of Engineering
Jan 2018 – Jan 2018 | Berkeley, California


## Education
### Master of Science - MS in Electrical Engineering and Computer Science
University of California, Berkeley
Jan 2021 – Jan 2022

### Bachelor of Arts - BA in Computer Science
University of California, Berkeley
Jan 2017 – Jan 2021

### John A. Rowland High School
Jan 2013 – Jan 2017


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

---
Source: https://flows.cv/edwardchoi
JSON Resume: https://flows.cv/edwardchoi/resume.json
Last updated: 2026-03-29