John Heckendorf - Business Owner at Green Rabbit Enterprises, L.L.C.

John Heckendorf

Business Owner at Green Rabbit Enterprises, L.L.C.

Wisconsin, United States

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Summary

👤

Senior

🎓

Top School

John Heckendorf is a seasoned software professional and business owner in Wisconsin with over a decade of hands-on experience spanning Android, C#, Java, web technologies, and databases. He combines practitioner-level development—contributing fixes and refactors to notable open-source C# projects like RoslynPad and RiotSharp—with a long track record of teaching and mentoring IT students at multiple colleges and universities. His background includes managing enterprise IT operations for large organizations, supervising support teams, and creating practical tooling to "make my life easier," reflecting a pragmatic, efficiency-focused engineering mindset. Comfortable across front-end, back-end, and tooling work, he excels at refactoring asynchronous systems and improving developer ergonomics in cross-platform C# projects.

10 years of coding experience

22 years of employment as a software developer

Bachelor of Science in Business Adminstration, Business Adminstration and Information Systems, Bachelor of Science in Business Adminstration, Business Adminstration and Information Systems at Mt. Senario Universty

Master of Science, Information Technology, System Design and Programming, Master of Science, Information Technology, System Design and Programming at Capella University

Associate of Science, Information Technology, Associate of Science, Information Technology at Northcentral Technical College

perl, java, c#, javascript, php, xml, android, flash, mysql, html, ajax

Github Skills (17)

asynchronous10

roslyn10

async10

dotnet-core10

csharp10

avalonia10

editor9

dotnet9

editors9

dotnet-new9

riot-games-api9

apidoc8

api8

cross-platform8

msbuild8

Programming languages (17)

C#PowerShellJavaC++RustCDGo

Github contributions (5)

BenFradet/RiotSharp

Jan 2018 - May 2019

C# wrapper for the Riot Games API

Role in this project:

Back-end Developer

Contributions:6 commits, 5 PRs, 25 comments in 1 year 3 months

Contributions summary:John primarily focused on refactoring and improving the project's codebase. They addressed asynchronous method handling by implementing `ConfigureAwait(false)` for performance optimization and improved code clarity. The user also removed all synchronous code and replaced it with asynchronous counterparts. Furthermore, they refactored the `StaticRiotApi` and other supporting classes and interfaces to improve the project structure.

apiriot-gamesgamesriot-games-apiapi-wrapper

roslynpad/roslynpad

Dec 2019 - Jan 2020

A cross-platform C# editor based on Roslyn and AvalonEdit

Role in this project:

Full-stack Developer

Contributions:5 commits, 3 PRs, 9 comments in 1 month

Contributions summary:John contributed to the RoslynPad project by fixing build issues related to NuGet package restoration in paths with spaces. They introduced and updated code snippets within the editor, specifically for a desktop application setup. Furthermore, the user refactored the snippet manager to improve its structure and organization, which involved moving snippets into separate methods. This demonstrates proficiency in C# and the technologies underpinning the editor, like Roslyn and Avalonia.

roslynavaloniadotnetroslyn-analyzerc-sharp

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