Kellen Steffen
Senior Software Engineer at Ground News
Waterloo, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolKellen Steffen is a senior software engineer with 11 years of experience building backend-first systems and full-stack web applications, currently shaping scalable services at Ground News from Waterloo, Ontario. He has led small engineering teams and driven projects end-to-end, from token-based auth and device management to a double-entry accounting system integrated with Plaid/Stripe handling millions monthly. Kellen’s background spans manufacturing-floor data collection and asynchronous worker architectures to property-buying underwriting pipelines that have supported over $100M in purchases, demonstrating a strong grasp of reliable data flow and financial systems. Comfortable across the stack, he pairs pragmatic product focus with hands-on implementation of microservices, CI/CD, and integration with external APIs. Notably, he combines deep technical execution with operational discipline—keeping teams ahead of deadlines while delivering auditable, production-ready systems.
11 years of coding experience
12 years of employment as a software developer
University of California, San DiegoMMath, Computer Science, MMath, Computer Science at University of Waterloo
English
Stackoverflow
7,083reputation
2.1mreached
5answers
0questions
php
top-5%
ssl
top-1%
google-chrome
top-1%
security
top-5%
database
top-5%
certificate
top-1%
Github Skills (64)
ssl10
slack-bot10
certificate10
google-chrome10
security9
php9
database9
bluebird8
ecr8
aws-ecr8
chatops8
amazon7
elastic-container-registry7
circleci-orb7
oauth2-client7
Programming languages (5)
Github contributions (5)
ktrain/the-ohms
Feb 2015 - May 2020
Can you resist?
Contributions:6 PRs, 188 pushes, 37 branches in 5 years 4 months
resist
ktrain/slack-higgins
Jan 2018 - Dec 2021
A Slackbot for my personal slack
Contributions:76 pushes, 62 branches in 3 years 11 months
chatopsslackslackbotslack-bot
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