App developer for SF and the Bay Area
Async-first with a real PT window. Fast enough for YC pace.
50% on kickoff, 50% on delivery · 30 days of free revisions · you own the code
Recent work
See all →Why we wrote this. We ship work like this ourselves — not as a reseller or a marketplace. The timelines, deliverables, and price bands below come from real engagements we've run end-to-end at Smartly Built Ventures Limited (trading as Vibed Ventures).
Who this is for
- YC and Bay Area seed-stage founders
- Engineering leads needing a fast contractor team
- Operators who value velocity over face time
What you get
- Live PT overlap window from your 7am to 11am
- USD invoicing and Stripe Atlas / Delaware C-corp friendly contracts
- Used to YC's batch cadence and demo-day deadlines
- Code review and PR-first workflow, not Jira theatre
Dig deeper
Frequently asked
Can you hit a demo-day deadline?
Yes — we've shipped to YC demo day timelines. Tell us the date up front.
Are you used to Stripe Atlas / Delaware corps?
Yes — most US engagements run on that stack.
What happens next
- Step 1Tell us the problem60 seconds in the /solve box. You don't need a brief.
- Step 2Get a tailored reportROI, build plan and a rough price band — emailed to you.
- Step 3Book a 25-min callWe talk it through honestly. If it's not for us, we'll say so.
Related in where
- App developer for London startupsRemote-first studio, on UK hours, used to London's pace and contract norms.
- App developer for New York startupsFour hours of live overlap with ET. Demos when you wake up, ship by lunch.
- App developer for Berlin startupsEU hours, EUR invoicing, GDPR-native by default.
- Remote-first, async by defaultWherever you are, you'll have working software to look at on day three.



