Matt Duvall
Co-founder & CTO at Numeral
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolMatt Duvall is a seasoned software leader and co-founder/CTO based in San Francisco with 11 years of engineering experience spanning startups and product teams at Notion, Stripe, Box, and Numeral. He brings deep payments and backend expertise—contributing notable open-source work to Stripe libraries in Java and Go, including fraud-related models and charge outcomes—and has also improved front-end payment UX via the jquery.payment project. Comfortable shipping across the stack, Matt pairs pragmatic product thinking with rigorous tests and API-first design. An alumnus of UC Berkeley and Y Combinator W22, he combines enterprise-grade engineering discipline with startup velocity and a knack for turning nuanced payment and security requirements into maintainable code.
11 years of coding experience
11 years of employment as a software developer
Electrical Engineering and Computer Sciences, Electrical Engineering and Computer Sciences at University of California, BerkeleyW22, W22 at Y Combinator
Github Skills (17)
javascript10
jquery10
coffeescript10
stripe10
apidoc10
testing10
java10
credit-card10
javas10
junit10
go10
api10
sdk10
stripe-js10
jtest10
Programming languages (6)
Github contributions (5)
stripe/stripe-go
Jun 2015 - May 2018
Go library for the Stripe API.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 1 PR, 1 push in 2 years 11 months
Contributions summary:Matt primarily focused on extending the functionality of the Go library for the Stripe API. Their contributions involved adding new fields to account parameters and test cases, enhancing the `Charge` struct by adding outcome fields, and incorporating review information within the charge data. They also renamed the `Outcome` field to `ChargeOutcome` for better clarity and implemented an `issuerfraudrecord` package.
golangapistripestripe-sdkgo-library
stripe-archive/jquery.payment
Aug 2015 - Sep 2015
[DEPRECATED] A general purpose library for building credit card forms, validating inputs and formatting numbers.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:10 commits in 1 month
Contributions summary:Matt primarily contributed to the `jquery.payment` library by addressing code quality and expanding its functionality. Their commits involved dropping semicolons, expanding patterns for readability, adding new card types, and correcting card expiry date handling. They also added new tests to ensure that the changes made to the library worked properly.
creditvalidationcredit-cardpurposesepa
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