# Karen Mu

> Software Engineer @ Chime

Location: San Francisco, California, United States
Profile: https://flows.cv/karenmu

Full Stack Software Engineer. Ex-Opendoor. BS in Computer Science, MS in Mathematical Finance and Financial Technology. Software and FinTech and everything in between. Let's build something cool together!

## Work Experience
### Software Engineer @ Chime
Jan 2024 – Present | San Francisco, California, United States
Pay Anyone team

### Software Engineer @ Opendoor
Jan 2023 – Jan 2024
Full Stack Software Engineer under the Retail (formerly Buyer) team

• Ran a major migration on the property model from MongoDB to PostgreSQL, Elasticsearch, and GraphQL API Gateway - migrated the tours and offers endpoints, workers, and internal lookups to use the API, which enabled Opendoor’s buyer market to expand from 22 to 50 markets
• Co-lead the development and shipped a customer-facing product (XState, React, Typescript) that enables users to successfully remotely unlock and self-tour homes via their phone in under 5 minutes
• Orchestrated product launch in a cross-functional team effort across engineering, product, operations, design, and decision science - product replaced a legacy flow and reduced user friction, for which I received employee of the month (Dec 2023) due to its success

### Software Engineer Intern @ Opendoor
Jan 2022 – Jan 2022 | San Francisco, California, United States
Software Engineer intern under the Pricing MLOps team

• Shipped a product that replaced a day long process with tedious communication between Operations and Engineers with a simple feature (Ruby, Ruby on Rails) integrated into the existing Pricing workflow
• Converted a Databricks notebook into a scheduled DAG in Apache Airflow - reduced runtime and turned a weekly 6+ hour long manual operation into a fully automated process

### Quantitative Developer Intern @ Ellington Management Group
Jan 2021 – Jan 2021 | Old Greenwich, Connecticut, United States
• Developed and tested across all parts of the tech stack - performed backend to SQL integration and database optimization, built various web pages, and implemented a password manager (C#, REST API, JavaScript) for an internal web application used by traders and analysts
• Designed and developed a CDS pricer (C#) that replaced an Excel-based calculator and reduced number of input parameters by 55%

### DevOps Software Engineer Intern @ FM Global
Jan 2019 – Jan 2019 | Johnston, RI
• Conducting implementation of API (SpecFlow, C#) and UI unit tests (Jasmine, TypeScript) in Gherkin formatting, UI browser tests (Selenium, C#), UI tasks using Angular (HTML, SCSS, Bootstrap), API integration, bug fixes, and exploratory testing on internal web-based application
• Effectively treated as a full time developer - self assigned and independently completed tasks with respect to acceptance criteria and visual mock-ups provided by UX designers
• Reduced build times from 2 hours to 40 minutes by parallelizing CI/CD and PR build pipelines which improved sprint burndown by 25%

### Software Engineer Intern - Image Processing @ Hermes-Microvision, Inc.
Jan 2018 – Jan 2018 | San Francisco Bay Area
• Developed image enhancing software involving gamma adjustment that replaced company’s pre-existing code and increased AI model’s performance


## Education
### Bachelor of Science - BS in Cognitive Science - Minor in Mathematics and Psychology
Rensselaer Polytechnic Institute

### Master of Science - MS in Mathematical Finance and Financial Technology
Questrom School of Business, Boston University

### freeCodeCamp


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

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Source: https://flows.cv/karenmu
JSON Resume: https://flows.cv/karenmu/resume.json
Last updated: 2026-04-11