Racetix
Ticketing platformA cash-only track needed advance ticket sales. I built a multi-tenant platform covering payments, mobile wallet tickets, and QR admission scanning.
Multi-tenant / Stripe Connect / Mobile ticketing
Software engineer & founderBoston, MA
Sean O’Connor.
I build software and run Hadlock Technologies.
Web products, native apps, and the systems behind them. Currently finishing my master’s in Computer Engineering at Boston University.
Selected projects 04
All projects
beenvoice
Business softwareThe business side of independent work. Clients, time tracking, recurring invoices, and payments across web and mobile, with iOS widgets to keep things close.
Next.js / Expo / PostgreSQL
Puter
Native macOS appA system monitor for the details Activity Monitor leaves out. Live process controls, hardware telemetry, and diagnostics, built in SwiftUI.
Swift / SwiftUI / macOS
Manyangles
Manyangles
Event photo sharingOne shared link for everyone’s photos. Guests upload from their phones; hosts review submissions and bring the event together in a shared gallery.
Guest uploads / Host moderation / Image processing
My company
I started Hadlock in 2026 to bring my software and infrastructure work together. I work directly with businesses, from figuring out what they need to building it and keeping it running.
hadlockCMS
I’m also building a publishing platform for multiple sites: visual page editing, revisions, scheduled publishing, and custom domains, without maintaining a separate codebase for each client.
About the platform
A bit more about me
I like knowing how
the whole thing works.
I started working on technology at Riverhead Raceway in 2020. Over time that grew from IT into building the website, live race systems, and software used around the track.
At Bucknell, I studied Computer Science and Engineering, built tools for robotics research, and helped other students learn to build things. Now I’m at BU, aiming to finish my master’s in a year while continuing my own projects.
Outside of software, I’m into specialty coffee, Formula One, and travel. I cofounded Bucknell’s Coffee Society—and, naturally, made a website for finding coffee in Lewisburg.
