Christian H. Email & Phone Number

Oakland, California, Us

San Francisco, California, Us

San Francisco, Ca, Us

* Developed and implemented into production a new personalization engine for recommending the most likely next category for returning clients.* Designed and created a new ranking algorithm for clients to book a tasker for a job this has measured impact on both revenue and overall experience.* Using both Logistic Regression and other modeling techniques to understand the factors that lead clients to retain or churn.* Designing and implementing A/B tests for both product features and machine learning model improvements.

San Francisco, Ca, Us

Contract work for various teams and projects. Some key responsibilities are:Data Mining and Cleaning (ETL): -- Extracting data from web sources both structured and unstructured - Assessing quality of data and the data pipeline structureExploratory Data Analysis (EDA): -- Visualizing data, e.g. understanding customer distributions and groupings of targeted features - Segmenting users and studying subsets of dataStatistical Inference (Experimental design and analysis): -- (A/B Testing) Optimizing click-through rates for both mobile and web analytics -- Experimental design, i.e., understanding statistical power and confidence intervalsMachine Learning (Python/Scikit-learn): -- Supervised learning models (predict churn and conversion rates, predict prices) -- Unsupervised learning methods (cluster users into distinct segments, association rule learning)

New York, Ny, Us

• Metis is a competitive 12-week data science immersive program in San Francisco with a curriculum designed by Datascope Analytics.• Developed and presented five business-applicable data projects, a few examples are:-- Designed a pipeline of deep learning algorithms to perform unique image augmentation and stylized to produce artistically styled objects in images.-- Created an application to predict crime incidents to visualize crimes on a basemap and the probability of an incident in a location and time.-- Implemented sentiment analysis across entire books to find key archetype clusters and engineered natural language features to produce a recommender system.

San Francisco, California, Us

• Leading a small team to provide quality and consistent service on a daily basis • Adapting management styles to produce quality outcomes of employees• Trained new employees in customer service and service skills• Maintained and monitored necessary materials for normal restaurant procedures

San Francisco, Ca, Us

Using what I know and what I can do to help young students in San Francisco from middle school to high school.

San Francisco, Ca, Us

• Modeled Photon interactions and performed radio-wave experiments on scaled 3D structures to compare results and improve performance.• Performed signal analysis of wave patterns in a novel optical structure to detect and strengthen the received signals. • Created a standard for A/B testing of waveform patterns in different structures. • Advanced research on novel Photonic Structures.

San Francisco, Ca, Us

• Mastered laboratory techniques to preform experiments on semiconductor devices.• Utilized complex electronics and physics concepts to preform calculations• Gained engineering techniques and gained hands-on experience with wafer doping and etching.

• Provided technical support at SFSU Student Services Building• Mastered and troubleshooted specialized software and hardware for people with special needs • Performed routine computer repair and customer service.

Master Of Science (Ms), Physics

Data Science

Bachelor Of Science (B.S.), Physics