Christopher Liu Email & Phone Number

Philadelphia, Pennsylvania, United States

• Lead team of 60+ software engineers, business developers, and designers to create web/mobile products used by 99% of undergraduates including Penn Course Review, Penn Clubs, Office Hours Queue, and the Penn Mobile app.
• Identify and coordinate the development of new features in mature and expanding applications to enhance student life.
• Work with university administration to best utilize school resources and protect student privacy.

Philadelphia, PA

• Spearhead backend development for a new degree planning tool to support hundreds of degree program combinations for ~10,000 students.

Philadelphia, Pennsylvania, United States

• CIS 1210
• Lead weekly recitation sections for 20+ students and host office hours for class of ~300 students.
• Teach data structures and algorithms: time & space complexity analysis, graph algorithms, compression algorithms, hashing, tries, randomized algorithms.
• Managed a committee of 6 grading leads that lead grading teams of 40+ TAs and create rubrics for weekly problem sets.

Menlo Park, California, United States

• Account Link Protection Privacy Enforcement
• Led the full-stack development of new portal to automate development of privacy-safe cross-app data APIs across Meta and optimized existing tools, leading to a 77% memory reduction for one tool.
• Held tech talks and provided code reviews for existing full-time engineers, becoming team SME for several frameworks.
• Led and scoped the integration of new privacy protections to core API framework and migration of 1,500+ existing APIs, coordinating the safe rollout of 200,000+ lines of changes.

Philadelphia, PA

• Developed and optimized embedded systems code for critical EV battery management and power delivery circuits.
• Led implementation of a cutting-edge state-of-charge (SoC) estimation algorithm using an Unscented Kalman Filter (UKF).

New York, New York, United States

• Apple Sports
• Developed automated triaging pipelines to eliminate or significantly reduce bug report root cause investigation times.
• Designed a CI pipeline to develop a live activity replay library using a remote device manager and the SportsKit framework.
• Built a Mac app to locally simulate server play vending to connected devices to streamline front-end development and testing.

• Led the development of a web platform and the documentation for an open-source content extraction tool called Ingestum.
• Authored scripts for ingesting medical journal content for use in AI pipelines and developed a novel algorithm for morphological text extraction from unstructured PDFs (credited in patent WO/2021/195133).

New York, New York, United States

• Analyzed the impact of one of the largest non-profit organizations supporting underserved Asian and immigrant youth in NYC using SPSS Statistics.

Master Of Science In Engineering - Mse, Computer And Information Science, 4.00/4.00

Courses: Machine Learning, Big Data Analytics, Natural Language Processing, Computer and Network Security

Bachelor Of Science In Engineering - Bse, Computer Science, Linguistics And Mathematics Minors, 4.00/4.00

Activities and Societies: Penn Labs, Phi Kappa Psi Courses: Compilers and Interpreters, Data Structures and Algorithms, Scalable and Cloud.

High School Diploma, 98.5/100 Unweighted

Activities and Societies: Stuyvesant Senior Caucus, Stuyvesant Asian Coalition, Varsity Baseball