Constantly Curious.
Data Nerd.
Easily Amused.
Welcome to my corner of the Internet!
Thanks in advance for visiting!
If you wanted to see Gibbs & Chewie - please visit their Instagram page instead
EXPERIENCE
Fraud Data and Business Analyst | Remitly | Seattle, WA
June 2016 – June 2018
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Identified and monitored fraud trends and performed risk analysis for day-to-day operations
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Forecasted expected fraud losses using regression analysis
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Analyzed fraud-prone customer populations using customer segmentation techniques
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Reduced losses in a risky corridor by 75% within 4 months
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Maintained flat fraud dispute rate as business increased over 100%
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Translated data into fraud signals and worked with engineering to turn signals into features
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Implemented and documented training for investigation team to identify fake bank statements
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Partnered with data science team to develop machine learning tools to increase efficiency in risk reviews
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Provided subject matter expertise to help identify features and provide feedback on tool outputs
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Improved precision of the output to target specific populations in addition to all customers
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Established best practices for the fraud team
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Drove weekly communication with international risk operations team to understand trends from real time investigations to improve product and prevent fraud
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Created metrics and dashboards to increase transparency within the larger organization
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Developed end-to-end process for risk rules with minimal impact to operations
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Implemented code reviews and QA process for fraud analyst team
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Senior Consultant | Hitachi Consulting | Seattle, WA
April 2015 - April 2016
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Led data and business intelligence development for a $50 million customer refund program at an international telecommunication company
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Identified customer population by consolidating key information across various department databases
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Managed 3 TB database for legal counsel
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Aggregated and analyzed customer segmentation data to support legal counsel
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Coordinated backend database update schedule with multiple departments to ensure efficient customer refund
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Migrated 15 million customer record data from vendor to client database
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Cleansed data and provided customer segmentation logic
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Reduced data upload time by 50% through Python implementation
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Maintained data integrity with vendor by performing range, constraint, data type, and cross-reference validation
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Consultant | Hitachi Consulting | Houston, TX
July 2012 - April 2015
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Created and delivered prototype for a digital worker’s handbook for upstream oil and gas client as the lead business intelligence developer
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Parsed database logic for legacy handbook entry system
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Normalized database to improve report generation by 20%
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Provided business intelligence development and analysis for casino client
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Migrated and optimized data for report generation in an EDW system
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Trained clients to troubleshoot report errors
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Managed a cross-functional team to deliver a client’s internal SharePoint web portal using Agile project management practices
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Lead business requirements meetings and worked with marketing team to identify target users’ needs
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Mapped company-wide roll-out strategy of internal web portal with client marketing team
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Technical Manager | Who’s HOU | Houston, TX
November 2011 – May 2012
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Managed technology aspects of Who's HOU project, a digital driven showcase to promote Houston’s music, film, and interactive industries
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Conducted user survey to determine content type for the site
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Assisted in writing and pursuing grants and donations
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Assisted in the launch of the project at South by Southwest (SXSW) 2012
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Details available: Who's HOU
Student Co-Founder | ZikomO NeoSyp | Houston, TX
September 2010 – May 2011
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Focused on the device user experience and interface for an award winning prototype for neonatal syringe pump for developing countries
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Developed business plan for initial prototype distribution
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Applied for provisional patent in 2011
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Details available: Appropedia, Engineering for Change
PUBLICATIONS
Journal
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Lewinski, N., Zhu H., Ouyang, C., Conner G., Wagner, D., Colvin, V., Drezek, R. Trophic Transfer of Amphililic Polymer Coated CdSe/ZnS Quantum Dots to Danio rerio.” Nanoscale. 2011 Aug;3(8):3080-3.
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Lewinski, N., Zhu, H., Jo, H-J., Pham, D., Kamath, R., Ouyang, C.,Vulpe, C., Colvin, V., Drezek, R. Biodistribution of water solubilized CdSe/ZnS quantum dots in Daphnia magna. Environmental Science & Technology. 2010 Feb: 44(5): 1841-6.
Conference
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Sung, C., Kamath, R., Cui, Y., Ouyang, C., Carstens, E., Ramos, R., Oden, Z. M. Design of a novel mechanical syringe pump for neonatal care in low-resource settings. 2011 IEEE Global Humanitarian Technology Conference (Oct. 2011)
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Lewinski, N., Kamath, R., Ouyang, C., Zhu, H., Jo, H., Pham, D., Vulpe, C., Colvin, V., Drezek, R. Biodistribution of amphiphilic polymer coated CdSe/ZnS QDs in Daphnia magna. International Conference on the Environmental Implications and Applications of Nanotechnology (June 2009)
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Lewinski, N., Zhu, H., Ouyang, C., Colvin, V., Drezek, R. Fluorescence localization of water solubilized CdSe/ZnS QDs in the freshwater invertebrate, Daphnia magna. NSTI Nanotechnology Conference and Expo (May 2009)
EDUCATION
Masters in Bioengineering
Rice University | Houston, TX | 2012
B.S in Bioengineering
Rice University | Houston, TX | 2011
Resume
SKILLS
Technical
SQL
Python
Tableau
Teradata
ETL
C#
Adobe Creative Suite
HTML5 / CSS3
Django
Matlab
Functional
JIRA
Project management
Agile
Fraud Prevention
Public communication
Market analysis
Mandarin Chinese