hey, i'm sean.
Staff-level engineer who wears
Availablefor a staff or founding seat, a fixed-scope project, or a company to co-found
Remote, based in EuropeEnglish and FrenchEmployee or contractor
I ship whole systems that run on their own.Owned end to end.
- A daily AI news briefing that runs on its own
news-digestSince January 2026; cost and every failure publiclive - Evals and guardrails that fail closed
SeanLF/news-digestLLM-as-judge, schema-validated outputGitHub ↗ - Keeps overnight agent loops inside the weekly budget
SeanLF/ccpoolOne Go binaryGitHub ↗ - A game controller for any Mac app
steer.seanfloyd.devNative, from code to website, aloneSite ↗
Autonomous and takes ownership.
Engineering Manager, Hivebrite
I make teams faster.Not just me.
2+ days→1 hourOnboarding for 40 engineers, through automated setupCV15–20 min→7–10 minCI builds, by only running the tests a change could affectCV2→4 a weekDeploys, for the same 40 engineersCV- €160k a yearOff the CI bill, 8–11% of the infrastructure budgetCV
- 0 downtimeUpgrade to Ruby 3 and Rails 7 for 40+ developers, off end-of-life versions with no feature freeze; I made the case and led itCV
Data-driven and analytical; helps challenge architectural decisions with concrete data.
Tech Lead, Hivebrite
I fix it where it breaks.Even upstream.
- Improve ActiveSupport::Inflector.transliterate performance
rails/rails #46586Up to 670x, found profiling production+3−1 - Add hub_isolation_level for fiber-safe hub storage
getsentry/sentry-ruby #3018Shipped in 6.7.0; this site runs on it+185−16 - Serve queries lock-free during endpoint tests
nextdns/nextdns #1111A lock was blocking every DNS query+189−23 - Exports from 24 hours to 15–45 minutes
Hivebrite1M+ user communities; hundreds of tickets cleared−98% - Deleted dead code and fixed a CI that had been red for years
OmbuLabs clientSo the team could deploy again−715k - Also merged: RuboCop
#15588, Rack, via#2499. All merged PRs ↗
Thank you for all your time and work in creating such a wonderful website. It has made my job a lot easier over the years.
Volunteer Coordinator, Ottawa Jazz Festival
In their words
Autonomous and takes ownership.
Engineering Manager, HivebriteData-driven and analytical; helps challenge architectural decisions with concrete data.
Tech Lead, HivebriteThank you for all your time and work in creating such a wonderful website. It has made my job a lot easier over the years.
Volunteer Coordinator, Ottawa Jazz Festival