Ritvik Kharkar Email & Phone Number

Santa Monica, California, United States

- Improved job ranking model via multi-objective optimization, online Bayesian testing, addressing feedback loops- Lead twice-weekly discussions to coordinate teamwide data science efforts - Presented on multi-objective optimization for job search at hayaData 2023 conference

Santa Monica, California, United States

- Created job search suggestion machine learning model which led to 6% lift in jobseeker engagement- Improved upon search autocomplete machine learning model which led to 6% lift in autocomplete usage- Published and presented paper for KDD 2022 on job ranking and click-through-rate prediction

Santa Monica, California, United States

- Created company’s first job ranking machine learning model which led to 7% lift in jobseeker engagement- Ran experiments to measure biases in web search including position bias- As first data scientist on the team, created onboarding notebooks for new data scientists to ramp up quicker

Pasadena, California, United States

- Built probabilistic model designed to improve upon baseline classification of wetland areas (mangroves, swamps, etc.) in the South American country of Colombia- Used time series of optical satellite data via the Sentinel-2 mission and radar satellite data via the ALOS-2 mission, considering issues like cloud masking and radar de-speckling- Organized code into easy-to-use pipeline which creates interactive map of predicted wetlands with confidence levels- Used: Python, QGIS, Google Earth Engine

Greater Los Angeles Area

- Hold biweekly discussion section for group of 30 undergraduate students- Hold biweekly office hours to assist students with understanding material

Long Beach

- Pioneered a Business Intelligence team with the goal of cleaning, transforming, and reporting on internal development data to make decisions about future product directions- Used Amazon Web Services tools to extract, transform, and load the data; used Python’s Dash library to design a dashboard for data visualization- Created set of interactive reports designed to monitor the health of a customer’s business process based on metrics such as work-in-progress, throughput, and cycle time- Designed a Monte Carlo simulator to highlight the usefulness of the above reports in proactively detecting business process inefficiencies- Used: Python, C#, SQL, JavaScript, HTML, CSS

- Promote, develop, and implement programs to meet departmental goals- Counsel residents regarding problems or concerns and provide appropriate resources- Know and enforce On Campus Housing Policies and document student concerns- Provide on-duty coverage for on campus residents from 7AM to 7PM on a rotating basis

University Of California, Los Angeles

- Given 15 years of data from UCLA Dept. of Math including grades, curricula, demographics, etc.- Formulated similarity measures to identify trends within high and low performing student groups- Used and modified correlations and regressions to identify the core courses for undergraduates- Predicted whether and when students drop out of undergraduate majors- Awarded Undergraduate Research Scholars Program (URSP) award ($5000)- Used: Python, R, C++

- Responsible for setup, proctoring, and strike of audiovisual systems in lecture halls- Responsible for setup, maintenance, and strike of audiovisual systems for UCLA events including but not limited to: information sessions, dances, movie screenings, administrative meetings, weekend high school programs, and exam review sessions- Experienced with JBL, Yamaha, and Fender audio equipment, Chroma-Q and programmable DMX lights, and Crestron and AMX control systems

Greater Chicago Area

- Worked closely with the City of Cincinnati Fire Department to build a model designed to predict medical transport requirements for any given 911 call- Built in factors including weather, time of day, geographic location, patient information, etc.- Final model allows 2500 patients per year to get faster medical transport to hospital- Used: Python, R, SQL

- Contributed math questions to the problem bank in areas such as Algebra, Geometry, Trigonometry and Calculus- Wrote questions online using MathML language- Validated questions made by other contributors- Edited questions with errors - Created problem sets tailored to individual students’ strengths and weaknesses- Gave students feedback on missed questions

- Software Installation and Modification- Installed and Modified Bugzilla bug tracking software to company preferences- Recorded modification process in manual for future company useWorked with professional software engineers to run sample bug tracking tests- Worked primarily with Ubuntu command line interface - Became acquainted with mechanics and roles of employees at a software company

Master Of Science - Ms, Statistics

B.S, B.A, Mathematics Of Computation; Economics

Activities and Societies: Undergraduate Mathematics Students Association