Jason Teixeira.
Operator at Sage Ideas. Writer at this desk, with the lamp on.
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- BasedBrooklyn, NY
- StudioSage Ideas
- CadenceWeekly · long-form
- Open toEmail
I'm Jason Teixeira. By day I run Sage Ideas — a one-person software studio building product for people who don't have time for product. By night, I write here, at this desk, with the lamp on.
Sage After Dark is the late-night studio. Essays, tutorials, dispatches, one annual cathedral, and the occasional field note from a Tuesday that did not go as planned. The day job is shipping. The night job is figuring out what shipping means.
I have spent the last decade building production software in financial systems, contractor operations, and AI tooling. Most of what I write here is downstream of that work — the lessons that survived the second incident, the templates that survived the second hire, the tools that survived the second year.
My obsessions are reliability, taste, the texture of small teams, and the half-life of decisions. I am suspicious of advice that has not been ridden through a 2am page. I am suspicious of writing that has not been ridden through a Sunday revision.
What you'll find here is the long version. The five-line spec dispatched on Friday becomes the 3,000-word essay published on Sunday. The system that broke at 11:42 on Tuesday becomes the runbook by Saturday. The book I'm reading this month becomes the margin notes you can read in twenty minutes.
I publish on cadence. I roll back in under 30 seconds. I reply to every email that comes back to a dispatch. The list is small on purpose, and the founding window is still open.
Five waypoints on the way here. Compressed, not complete.
- 2014
First production deploy.
Wrote my first 24/7-on-call line of code. Learned what “this is fine” actually costs.
- 2017
Fintech, scale, and pagers.
Five years inside financial systems. The discipline of money-moves-or-it-doesn’t became the lens for everything since.
- 2022
Stopped being employee #N.
Quietly began Sage Ideas. The studio was one operator, one laptop, one rule: ship work I’d be proud to sign.
- 2024
Trayd goes live.
AI companion for trades contractors. The product I’d been arguing about with myself for two years. The first paying call took 11 days.
- 2026
Sage After Dark opens.
This site. The late-night studio. The receipts.
Eight rules. Hover or arrow-key through them. They are not aspirations — these are the ones that survived being wrong on a Tuesday.
Reversible deploys. Reversible decisions.
If a change can’t be rolled back in under thirty seconds, it isn’t a deploy — it’s a renovation. Same is true of decisions: write the version that has an exit clause first, ship it, and let production tell you whether it deserves to be permanent.
- ▸Write EP 02 of Trayd, In Public (subject: the first pricing call I lost on purpose)
- ▸Record one tutorial: atomic-swap deploys end-to-end
- ▸First 100 newsletter subscribers — founding window now open
- ×Twitter/X scroll (one window/day)
- ×New side projects (two killed in April)
- ×Podcast appearances until the launch ships
Three products under Sage Ideas — funded by clients, operated by me.
Q.01Why “After Dark?”
Because most of this gets written between 9pm and 1am, after the day job has stopped paging. The lamp is on. The kettle is full. The emails can wait.
Q.02Is this a side project?
No. It’s the long version of the day job. The dispatches, the runbooks, the half-life essays — they all fall out of building Sage Ideas. The studio funds the writing; the writing sharpens the studio.
Q.03Can I republish your work?
Quote freely with attribution and a link back. For full reprints — newsletters, anthologies, course packets — email me. The answer is usually yes.
Q.04Do you take on new clients?
Rarely. Sage Ideas is mostly closed-list — most product work goes into Trayd, Alphathreum, and Naural. If you have a problem in financial systems, contractor ops, or AI tooling that you think genuinely fits, write the email anyway.
New here? Three places that explain the rest: