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  • Health Catalyst - Able Health
  • San Diego, CA


  • Arctic Code Vault Contributor




  1. A sandbox app for testing performance of querying hierarchies


  2. An aide to teaching DOM traversal


  3. The Crystal Programming Language

    Crystal 15.6k 1.2k

  4. A Crystal web framework that makes building applications fast, simple, and enjoyable. Get started with quick prototyping, less bugs, and blazing fast performance.

    Crystal 2.2k 172

724 contributions in the last year

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Contribution activity

March 2021

marksiemers has no activity yet for this period.

February 2021

8 contributions in private repositories Feb 1 – Feb 23

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