Kelsey Osos
Software Engineer at square
Bel Air, Maryland, United States
Summary
👤
Senior🎓
Top SchoolKelsey Osos is a Senior Software Engineer with nine years of full-stack experience building scalable, reliable systems for fintech and enterprise platforms. Currently at Instacart after impactful senior engineering roles at Square, Kelsey has led cross-product architecture and delivery of high-availability services, data replication pipelines, and automation that drastically reduced onboarding time and prevented millions in compliance losses. Comfortable from infrastructure-as-code and backend services to GraphQL APIs and front-end delivery, they pair product-minded engineering with hands-on DevOps and incident leadership. Earlier roles at MITRE and Willis Towers Watson added expertise in NLP, signal processing, and trunk-based CI/CD workflows, reflecting a blend of data, systems, and web development. Based in Bel Air, Maryland, Kelsey brings a pragmatic focus on reliability and scalability while also drawing on a background in audio engineering—an unusual edge that informs system-level thinking about latency and signal fidelity.
9 years of coding experience
9 years of employment as a software developer
Bachelor's of Science, Music Composition and Audio Technology, Bachelor's of Science, Music Composition and Audio Technology at University of IndianapolisBachelor's of Science, Computer Science, Bachelor's of Science, Computer Science at University College Dublin
Github Skills (19)
fetch8
robotics7
ember-data6
javascript6
react5
data-loading5
typescript5
react-native5
reactive4
functional-programming4
rxjs4
declarative3
composable3
ember3
reactive-programming3
Programming languages (4)
Github contributions (5)
OsosKP/FreshSmell
Feb 2019 - Apr 2019
A web-based code-smell analyzer for java files
Contributions:84 commits, 1 push in 2 months
web-basedjava-filescode-smelljavaanalyzer
ososkp/Scripts
Apr 2018 - Mar 2023
Contributions:12 pushes, 1 branch in 5 years
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