Sammy Lee Email & Phone Number

Oakland, CA, US

San Francisco, California, US

Query:- Optimized query latency by utilizing cache warmups on customer data, querying behavior, and strategically load balancing customers across cluster compute resources. Implemented efficient cluster warm-up strategies to minimize latency and enhance overall performance.ML Infrastructure:- Enabled faster ML model development by creating a FastAPI.

New York, New York, US

- Refactored Stats Engine, Optimizely’s proprietary statistical library for sequential analysis in A/B testing. Designed and implemented microservice on this package using FastAPI and Gunicorn for custom analysis. Partnered with statistician to introduce post-stratification for variance reduction.- As lead on multi-armed bandit feature, drove usability.

New York, New York, US

- Implemented multi-armed bandit algorithms, including Thompson Sampling and Epsilon Greedy, to introduce dynamic traffic allocation in Optimizely optimization and A/B testing approaches. Collaborated with professor and ML engineers to implement novel bandit technique to minimize time to significance in A/B testing.- Led efforts to carry out a modified.

San Mateo, California, US

- Built a predictive model using H2O to predict users first time payments. Evaluated performances of different models from GBM to Deep Learning models. Results allowed us to focus on how to improve our games to increase retention.- Trained and verified preexisting models that predicted user churn.- Scale and improve machine learning infrastructure for.

San Mateo, California, US

- Developed tracking system to merge different tracking databases and create a simple API to add tracking.- Created a new feature that allows users to save and load their progress on other devices, allowing multiple users to play the same game on the same device.- Implemented obstacle within our game, Hungry Babies Mania.

San Mateo, California, US

- Implemented social features such as gifting and requesting help in casual games.- Designed management system for bundling multiple items in casual games.- Developed and improved in-house tool that allows game designers to develop and iterate Match3 levels by leveraging the use of an IPad and immediate testing of the level, increasing productivity by 10x.

San Jose, CA, US

• Created and developed a PERL program that generated front-end and back-end code (in C) to provide command line interface (CLI) requests for hardware counters, reducing the overhead needed from engineers to manually.
• Developed a backend service (in C) used in multiple projects that requested MAC addresses from a network management server and offers them to clients on a need-basis.
• Improved backend features that allocated database resources to create interfaces and allow for more robust scalability – up to 4K logical interfaces can be created.
• Created an API that sped up hardware reads/writes by replacing a locking write with a single instruction read, write, and swap.
• Implemented a feature that monitored and logged a particular process’s reads and writes into the ASIC.

San Jose, CA, US

Carlsbad, CA, US

Improved network model of a product to evaluate and assess utilization of Power PC. Was able to identify which load would cause a bottleneck within the system.

Ann Arbor, Michigan, US

Designed a prototype for the visually impaired. Used off-the-shelf transducers and developed peak detection algorithms to measure object distances that are relayed as frequency tones to the user (prototyped in MATLAB and programmed in C).

• Organized, managed, and led one of the largest student-run engineering career fairs in the area.
• 90 companies and 1,500 students attended, raising a total of $80,000 engineering organizations at UCSD.

Los Alamos, NM, US

Developed and implemented image-processing algorithms to provide read-time detection of material defects when machining metal parts. Used different techniques to exclude static portions and isolate only the moving portions to identify the chip velocity of the material being machined.

• Successfully built and led HKN to become an organization focused on professional development. This included opportunities to learn from faculty and industry experts, training on presentation skills, and tutoring.

Master Of Science (Ms), Applied Mathematics

Master Of Science (Ms), Electrical Engineering:Systems

Bs, Electrical Engineering