Mark Smith-guerrero
Senior Software Engineer at Capital One
Alexandria, Virginia, United States
Summary
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Rockstar🎓
Top SchoolMark Smith-guerrero is a senior software engineer with over two decades of hands-on experience modernizing systems, automating business processes, and building scalable web and backend services across industries from banking to retail and energy. A polyglot who prefers open-source and functional approaches, he has driven measurable impact—e.g., gamifying the White House Citizen's Medal selection to reduce 30,000 nominations to 100 finalists and creating a Go-based "Legacy Translator" for 3,000+ Automotive Care Centers to enable seamless legacy/next-gen interoperability. Currently modernizing banking systems with Go at Capital One, he previously improved renewable power plant software throughput tenfold and led POS, mobile, and backend initiatives at Walmart Labs. Mark’s problem-solving emphasizes process utility and pragmatic experiments, balancing quick wins with long-term maintainability while mentoring teams and improving developer experience. Notably, he blends domain versatility—from OPC UA and IoT-adjacent integrations to public-facing web UX—making him adept at translating complex technical constraints into impactful product outcomes.
13 years of coding experience
14 years of employment as a software developer
Georgetown Day SchoolBS Economics, BS Economics at George Mason University
English, Spanish
Stackoverflow
340reputation
17kreached
13answers
0questions
Github Skills (18)
javascript10
wordpress10
redux10
api10
nodejs10
react10
html6
internet-explorer6
transparency6
paradigms6
drupal6
css6
layout6
jquery6
terminology6
Programming languages (5)
Github contributions (5)
msmithgu/msmithgu.github.io
May 2015 - Nov 2024
Contributions:59 pushes in 9 years 7 months
msmithgu/mm
Dec 2021 - Dec 2023
Contributions:18 pushes in 2 years
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