Geoff Langenderfer
Software Engineer at SmileMarvin.com
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolGeoff Langenderfer is a pragmatic software engineer with nine years of experience building cost-efficient, production-grade systems and a knack for using code as leverage. After a self-taught start in 2017 he delivered measurable impact at Amazon—leading migrations that saved millions annually and modernizing critical dependencies and build tooling. He blends backend expertise (Python, Java/Kotlin, NodeJS), cloud experience on AWS, and hands-on migration work from legacy stacks to modern architectures, including Graviton and Spark upgrades. Geoff also mentors and teaches—automating grading and creating beginner-friendly content during a bootcamp TA role—and has applied his skills in freelance projects integrating APIs and web scraping. Now based in Seattle, he’s seeking the next challenge where pragmatic engineering and cost-conscious architecture drive real business outcomes.
9 years of coding experience
6 years of employment as a software developer
BS Mathematics, BS Mathematics at University of Michigan
Spanish
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (200)
nvim10
python-data10
sendgrid10
neovim-plugin10
lua10
tree-sitter10
jupyter-notebook10
neovim10
java-bytecode9
html9
resharper9
twilio9
php9
r9
ihp9
Programming languages (25)
Github contributions (5)
geofflangenderfer/gigMax
Jan 2020 - Apr 2021
A better dashboard for Uber Eats Drivers
Contributions:2 PRs, 66 pushes, 4 branches in 1 year 3 months
driversuber-dataweb-scrapinguberuber-eats
geofflangenderfer/resume
Apr 2019 - Jul 2023
Contributions:30 pushes, 2 branches in 4 years 4 months
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