Mo O'connor is a Senior Software Engineer with seven years of experience building reliable web and backend systems, currently advancing payments infrastructure at Spreedly. With a background in the arts and prior leadership roles in account management, she blends strong product empathy and team mentorship with pragmatic engineering. Her open-source contributions to the widely used Active Merchant library show deep familiarity with payment gateway integrations, BIN ranges, and edge-case bug fixes. Comfortable across Django, Python, and JavaScript stacks, she also brings formal full-stack training and hands-on clinical software experience from Duke University. Based in Durham, NC, she balances technical rigor with creativity—outside work she’s a self-described dog mom and plant enthusiast who values continuous learning and helping newcomers into tech.
7 years of coding experience
10 years of employment as a software developer
Bachelor of Fine Arts (BFA) Ceramic Arts and Ceramics, Bachelor of Fine Arts (BFA) Ceramic Arts and Ceramics at Appalachian State University
Fullstack Python Development, Fullstack Python Development at Momentum
Active Merchant is a simple payment abstraction library extracted from Shopify. The aim of the project is to feel natural to Ruby users and to abstract as many parts as possible away from the user to offer a consistent interface across all supported gateways.
Role in this project:
Back-end Developer
Contributions:162 reviews, 56 commits, 115 PRs in 1 year 6 months
Contributions summary:Mo made significant contributions to the `active_merchant` library, primarily focused on integrating payment gateways. Their work involved adding support for specific fields within the Orbital and Forte gateways, including card indicators and service fee amounts. The user also addressed bugs and enhanced existing features, as demonstrated by the fixes to the CardIndicators field for the Orbital gateway and the Forte gateway. Furthermore, they updated BIN ranges for Maestro and Elo, demonstrating a focus on payment processing and gateway integrations.
Contributions:58 PRs, 81 pushes, 11 branches in 2 months
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Mo O'connor - Senior Software Engineer I at Spreedly