Hi, I'm Andrew Sumner

Software Engineer with 4+ years of experience across fintech, quantitative finance, and banking. I specialize in full-stack development with strong backend expertise, utilizing Python, TypeScript, Kotlin, Ruby/Rails, and AWS.

Currently at Upstart, I focus on borrower verification systems, enhancing data accuracy and approval rates through features like new credit reporting integrations and customer-facing UI improvements to minimize friction. Previously at Capital One, I designed and built high-impact products including a real-time marketing decision platform handling 100+ million daily records and a self-service cashier's check kiosk deployed across multiple locations. I also spent a short time at Campbell & Company, where I automated analytics and data workflows used by quants.

With a background in both computer science and physics, I bring strong analytical and problem-solving skills to each project, helping me navigate complex challenges across the full development lifecycle. I'm passionate about bringing practical, robust solutions to life.

In my personal time, I love staying up-to-date with new technologies and am currently building a web app focused on outdoor recreation, powered by large language models. If you're interested in connecting, let's chat!