Spenser Filler
Senior Software Developer at Spring Health
Greater Madison Area United States
Summary
👤
Senior🎓
Top SchoolSpenser Filler is a Senior Software Developer with 11 years of experience building scalable, resilient web systems across startups and enterprise environments. He specializes in DynamoDB, GraphQL, Node/Express, Angular, and AWS infrastructure, and has a track record of reducing costs and improving availability—examples include cutting DynamoDB reads by 20%, architecting a GraphQL API to shrink payloads 90%, and achieving 99.99% availability with blue/green deployments. Comfortable leading both code and infra, he implemented 100% AWS CDK coverage and introduced an NX monorepo to speed local development and improve type safety. Spenser combines product-minded engineering with hands-on execution, having driven MAU growth through better notifications and reduced QA friction via expanded test collections. Based in the Greater Madison area, he thrives on difficult problems and collaborative adventures, often balancing production work with hands-on house projects. His background in technical systems management underpins a pragmatic approach to system design and operational reliability.
11 years of coding experience
9 years of employment as a software developer
University of Illinois Urbana-Champaign
Github Skills (7)
range-picker5
paypal4
planning3
datepicker3
angular3
web-application3
nodejs2
Programming languages (3)
Github contributions (5)
spenserfiller/notebook
May 2020 - Mar 2025
a place for thoughts and stuff
Contributions:17 pushes, 2 branches in 4 years 11 months
placereactthoughts
lemurgency/skeeball
Feb 2015 - Mar 2015
Contributions:20 pushes, 1 branch, 3 issues in 1 month
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