Keith Holliday - Staff Software Engineer at Clevertech

Keith Holliday

Staff Software Engineer at Clevertech

Boulder, Colorado, United States

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Summary

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Rockstar

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Top School

Keith Holliday is a Staff Software Engineer based in Boulder, Colorado with 11 years of experience building full-stack and distributed systems across startups and product teams. He blends hands-on implementation of optimization algorithms in Python and C++ (including meta-heuristics like simulated annealing and genetic algorithms) with production-grade messaging and event systems using Kafka and SQS. At Clevertech he led teams of 3–17 engineers, drove client-facing product planning, and modeled logistics problems into deployable mathematical solutions. His open-source contributions span both frontend (Vue.js work on Hoppscotch) and mobile/backend (feature and notification work on Habitica’s Android and server), showing comfort across platforms. He also has deep operational experience managing Node.js distributed servers and multi-cloud DevOps for AWS, Azure and Heroku. With a background in mathematics and advanced studies in applied statistics and mechanical engineering, he brings quantitative rigor to engineering trade-offs and system design.

11 years of coding experience

7 years of employment as a software developer

Master's in Applied Statistics, Mathematics, Master's in Applied Statistics, Mathematics at Michigan Technological University

BS, Mathematics, BS, Mathematics at University of North Texas

Lake Dallas High School

English

Github Skills (30)

kotlin10

javascript10

expressjs10

back-end-development10

apidoc10

component-development10

css10

java10

javas10

notification10

api10

android10

html10

vue-jsx10

Programming languages (15)

C#JavaCSSCRustScalaVueHTML

Github contributions (5)

HabitRPG/habitica

Mar 2015 - Sep 2018

A habit tracker app which treats your goals like a Role Playing Game.

Role in this project:

Back-end Developer

Contributions:1 release, 808 commits, 1115 PRs in 3 years 6 months

Contributions summary:Keith's commits primarily involve back-end development tasks within the Habitica project. The code changes indicate the user's involvement in refactoring route namespaces, adding translation strings, modifying user models, creating and modifying various API endpoints, and implementing functionality related to private messages and group plans. These contributions showcase a focus on the server-side logic and functionality of the application.

trackerexpressvuereactjsrole

HabitRPG/habitica-android

May 2016 - Aug 2018

Native Android app for Habitica

Role in this project:

Mobile Developer (Android)

Contributions:105 commits, 20 PRs, 2 branches in 2 years 3 months

Contributions summary:Keith primarily focused on enhancing the Habitica Android app by implementing and refining features related to task management and notifications. Their contributions included adding notifications for to-do items and reminders, along with the ability to edit existing reminders. The user updated the codebase to utilize DBFlow for reminders and also added the ability to remove and update existing reminders. Furthermore, they worked on incorporating local notifications for various task types.

android-studiowearoscoroutinesandroidandroid-app

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