Stephen Imhoff Email and Phone Number

Investigating and evaluating methods of generating synthetic data suitable for machine learning, including • Modeled and textured environments and objects in Blender. • Scripted output of sample image and annotation generation with Blender's Python API. • Modified UnrealEngine 4 in C++ to provide annotations for synthetic training images, as part of an investigation into the use of machine learning in a retail environment. Wrote a gRPC-based service to serve real-time… Show more Investigating and evaluating methods of generating synthetic data suitable for machine learning, including • Modeled and textured environments and objects in Blender. • Scripted output of sample image and annotation generation with Blender's Python API. • Modified UnrealEngine 4 in C++ to provide annotations for synthetic training images, as part of an investigation into the use of machine learning in a retail environment. Wrote a gRPC-based service to serve real-time images and metadata to train neural networks. • Using Docker for isolated builds and deployments of applications, to reduce dependency requirements on host systems. Show less

Wrote and piloted an innovative proof-of-concept service integrating front-end retail/industrial hardware and backend payment systems. • Extended WCF in C# to handle an undocumented, vendor-specific, length-prefixed TCP-based protocol, including using custom annotations to create serializers via compiled Expression trees at service start time. • Evaluated multiple languages (C#, Java) and frameworks (ASP .NET Core, Spring), before selecting Java and Spring for the final… Show more Wrote and piloted an innovative proof-of-concept service integrating front-end retail/industrial hardware and backend payment systems. • Extended WCF in C# to handle an undocumented, vendor-specific, length-prefixed TCP-based protocol, including using custom annotations to create serializers via compiled Expression trees at service start time. • Evaluated multiple languages (C#, Java) and frameworks (ASP .NET Core, Spring), before selecting Java and Spring for the final implementation. • Demonstrated viability of using Docker for development, testing, and deployment of applications. • Provided initial design of final REST API between third-party hardware and Costco services. Show less

ThreeTen-extra - additional date-time classes that complement those in JDK 8+ • Implemented multiple alternate calendars. • Multiple, minor bug fixes.corefx - Open source base libraries for .NET • Participated in the community by assisting with code reviews, root cause analysis, and feature design discussions. • Multiple minor bug fixes • Updated previously closed-source code to emerging open source coding guidelines and standards. •… Show more ThreeTen-extra - additional date-time classes that complement those in JDK 8+ • Implemented multiple alternate calendars. • Multiple, minor bug fixes.corefx - Open source base libraries for .NET • Participated in the community by assisting with code reviews, root cause analysis, and feature design discussions. • Multiple minor bug fixes • Updated previously closed-source code to emerging open source coding guidelines and standards. • Updated multiple test projects to use features present on newer versions of the testing framework. • Cleaned up and expanded the suite of tests covering PLINQ, a major feature library. Show less

• Assisted in planning lessons and class activities, and helped students with pronunciation and English language activities. • Coached students for yearly speech contest. • Engaged with and participated in the community, including playing with the local brass band.

PROGRAMMER/ANALYST 2Wrote, tested, maintained, and debugged programs and statements written in Java, SQL, and RPG. • Improved many reporting programs by migrating them to use SQL. • Maintained and improved several existing RPG programs, including feature requests and bugfixes. • Parallelized some parts of the Member Invoicing system. • Part of the team that upgraded the monthly 2% rewards system. • Participated in yearly disaster recovery testing.… Show more PROGRAMMER/ANALYST 2Wrote, tested, maintained, and debugged programs and statements written in Java, SQL, and RPG. • Improved many reporting programs by migrating them to use SQL. • Maintained and improved several existing RPG programs, including feature requests and bugfixes. • Parallelized some parts of the Member Invoicing system. • Part of the team that upgraded the monthly 2% rewards system. • Participated in yearly disaster recovery testing. • Researched and analyzed data, including discrepancies, for the business. I was the go-to member of my team for ad-hoc SQL analysis queries.Worked on pilot projects as part of Costco’s move to Java. Worked as part of a larger team and individually on several internal services. • Mentored teammates in languages and coding best practices. Helped to establish team standards with regards to formatting and basic cleanup rules. • Wrote a library implementing Costco’s fiscal calendar. • Wrote a service able to estimate a Member’s 2% Rewards. Show less