Sigrid Berkebile-Stoiser Email & Phone Number

Focus: Developing algorithms, web applications and data science projects to identify cost savings in the UPS feeder networkAlgorithm Development- Created from scratch a Java 11 library that combines multiple different company internal data sources and then runs multiple algorithms on the data. The logic encapsulates complex business rules and aims to find opportunities for cutting feeder movements in the upcoming days. The library finds hundreds of opportunities daily and results are currently available in alpha test.- Successfully integrated library with a diverse set of databases, including Oracle, SQLServer and Couchbase- Wrote interface code for retrieving data from multiple RESTful web services using different authorization types, including JWT authorization- Achieved significant algorithm performance improvement decreasing run time from 13 hours to three hours due to pre-processing input data with dynamic programming algorithmFull Stack Development- Single-handedly created single page web app used for searching and visualizing opportunities for cutting cost in the feeder network. Used daily by alpha testers for validating the business logic used to identify the cuts.- Architected the system design, application design and technology stack. App consists of an Angular 15 frontend (Angular Material UI components) connected to a Spring Boot REST backend. - Successfully set up the app to adhere to UPS software standards: SSL configuration, oauth2 authorization with proprietary authentication server and Spring Security framework- Added comprehensive set of unit tests to the project: tests for controller functionality, Jasmine tests for Angular components and servicesData Science- Created two separate Python projects that aggregate the results of an algorithmic run into a dashboard type spreadsheet sent out daily to management (projects heavily utilize pandas and xlsxwriter libraries)

Timonium, Maryland, United States

Focus: Development and support of algorithms to plan for peak package volume in December- Created a custom heuristic (Python/Anaconda) that groups thousands of tractor trailer movements according to location and Department of Transportation rules - Wrote logic to present the raw results and aggregation of the major summary metrics in Excel spreadsheets. Resulting output was lauded by the internal customer team for its ease of use. - Finished app three weeks ahead of schedule. App is used yearly to create bid packages for outsourcing of UPS peak season routes between Thanksgiving and Christmas.- Developed suite of ~200 unit tests (Junit) for a Java library simulating the events in package sort operations in UPS hubs. Diligently worked with external QA and developers of the app consuming the library to fix bugs, create releases, and clarify questions on the functionality.- Developed from scratch Spring Boot web service wrapping a Java simulation library for use by a .NET client app. Web service was used as a proof of concept for introducing the Spring Boot framework into the group.- Created C# console app validating the travel matrix for UPS hubs. Logic is successfully used to improve the accuracy of hub and feeder network optimizations. - Compiled existing C# data structures for operating on company internal data modeling the UPS tractor trailer network into a general-purpose library. Added a suite of ~200 unit tests. Library is used by the team for ad hoc analysis and research projects.

Timonium, Maryland, United States

Focus: Developing features for enterprise applications (Angular/ASP.NET) facilitating the creation of UPS package labels for web customers- Participated in the re-write of the UPS web shipping system from AngularJS to Angular 4- Coordinated five complex requirement change initiatives on time despite test environment stability issues and delayed backend interface updates- Authored code for interfacing with several backend APIs (RESTful webservices) - Co-developed and maintained the Angular user interface for the credit card and PayPal payment interface used inside the New Web Shipping app- Worked closely with user representatives, QA, and backend component teams when implementing new requirements to ensure correct application functionality- Regularly participated in production releases (monitored logs, analyzed environment issues)- Mentored co-op student and helped with their assignments

Timonium, Maryland, United States

Focus: Serving as primary developer for the UPS mobile shipping application (J2EE)- Created technical design documents and implemented code changes for a new shipping service- Supported production releases by manual testing of the applications and monitoring logs

Timonium, Maryland, United States

- Fixed sixty bugs including several JavaScript and style issues specific to mobile platforms- Wrote Linux shell scripts for gathering shipping statistics from logs and created web page to display results- Assisted with creating management reports

Graz, Austria

- Led team effort to implement an 18 month data analysis project to statistically analyze the propagation properties of solar eruptions tracked in satellite images. Project outcome exceeded expectations with twice as many analyzed events than proposed.- Conducted measurements of the propagation curves of ca. 150 particle clouds expelled from the solar atmosphere with a semi-automated computer algorithm applied to satellite images

Graz, Austria

- Conducted research on solar eruptions through computer-based analysis of satellite data and physical modeling- Processed large, multi-dimensional image arrays and utilized extensive digital image quality assessment and quality enhancement techniques to enable the observation of small solar eruptions- Reconstructed and modeled X-ray spectra of solar eruptions with object-oriented IDL tool kits in order to improve our understanding of solar particle acceleration mechanisms on the Sun- Successfully raised grants and scholarships amounting to more than $45,000Communication and Leadership- Excellent reporting and documentation skills as shown by nine (English-language) publications in peer-reviewed research journals and numerous talks at international workshops and conferences- Collaborated with external colleagues during extended visits to universities and research centers including NASA Goddard Space Flight Center and the University of California, Berkeley- Supervised undergraduate and graduate students in programming and research techniques Public Outreach- Created HTML website for solar observation experiments for the International Year of Astronomy 2009- Gave invited presentations on solar physics in high schools- Volunteered at public viewings of solar eclipses and Venus transitAwards- Awarded the L’Oréal “For Women in Science” Fellowship, 2008

Master'S Degree, Computer Science

Doctor Of Philosophy - Phd, Physics

Activities and Societies: Member of the student council in 2006

Master'S Degree, Astronomy