Christian W
Staff Software Engineer (MTS2) at PayPal
College Park, Maryland, United States
Summary
👤
Senior🎓
Top SchoolChristian W is a pragmatic Staff Software Engineer with 12+ years building and leading high-throughput, Big Data systems for companies like PayPal and Uber. He led PayPal’s Product Catalog platform, designing an event-sourced persistence model that replaced inconsistent CRUD stores with a single source of truth and delivered measurable OpEx savings and catalog growth. Experienced across ingestion pipelines, cloud migrations, and monorepo CI/CD, he combines hands-on backend engineering with clear, empathetic communication to align technical and non-technical stakeholders. An active open-source contributor, he improved scientific data handling in the widely used THREDDS Data Server, adding NetCDF/GRIB support and coordinate-system features. He’s passionate about mentoring—several mentees were promoted within a year—and excels at turning research prototypes into production-ready, cost-effective systems.
12 years of coding experience
12 years of employment as a software developer
Bachelor of Science - BS, Mathematical and Computer Sciences, Bachelor of Science - BS, Mathematical and Computer Sciences at Colorado School of Mines
Stackoverflow
25reputation
3kreached
4answers
0questions
Github Skills (14)
javas10
grib10
netcdf10
java10
develop9
api8
apidoc8
testing7
tomcat6
matlab6
thredds6
opendap6
datasets6
war6
Programming languages (13)
Github contributions (5)
Unidata/thredds
Feb 2014 - Jun 2018
THREDDS Data Server v4.6
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 375 commits, 425 PRs in 4 years 5 months
Contributions summary:Christian's contributions centered on extending the capabilities of the THREDDS Data Server (TDS), specifically focusing on enhancing its handling of various data formats. They implemented improvements to existing data readers for formats like NetCDF and GRIB, and added support for new features, such as handling 2D latitude/longitude coordinate systems. The user also refactored code and built out tests to support the new functionality. These changes aimed to improve the usability and interoperability of the TDS.
tdsgribgeotoolsnetcdf-markup-languagencml
Unidata/nexus-IaC
May 2017 - Jun 2018
Infrastructure-as-Code for the provisioning of a Nexus Repository Manager 3 instance in the cloud
Contributions:2 PRs, 160 pushes, 5 branches in 1 year 1 month
nexus-repository-managergcpprovisioninginfrastructurerepository-manager
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.