VanguardDevsA product studio for fintech, insurtech and lending: MVPs, multi-tenant SaaS and embedded infrastructure — widgets, SDKs and partner APIs. Built for systems where the money has to balance: ledgers, reconciliation, redemptions, payment integrations. Remote, with clients in the USA, UK and LATAM.
Insurers were losing customers at renewal, with no retention tooling inside their own portal. Technical decisions: retention embedded as a widget and wired to the partner's systems through an API, with nothing to migrate. Result: running in production inside UK insurer portals.
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Several brands wanted to offer cashback without each building the infrastructure, and without their data ever mixing. Technical decisions: an embeddable widget and a partner API over a double-entry ledger, with multi-tenant isolation enforced in the database through Row Level Security rather than in application code. Result: every brand runs isolated, and balances reconcile against the external provider.
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Organizers ran registrations through WhatsApp and spreadsheets: chaos, errors and lost hours. Technical decisions: online registration and payment, with atomic slot reservation at checkout to close the race condition that oversold places when several people paid at once. Result: in production, with paying organizers.
zonacrono.comVenezuela runs on two exchange rates at once, with no single source recording both over time. Technical decisions: the bolívar (VES) against USD, EUR and USDT from the central bank (BCV) and Binance P2P, on an append-only log — every sync appends a row, none are updated. Result: everything else is a surface over that log, and the log is the moat.
Walk through the idea once. Get a map of your business, your stack and your constraints before any proposal. No pitch decks — findings.
Approve a plan, not a promise: fixed scope, a real timeline and the exact architecture that will be built. You know what you get and when, before you pay.
Use your product from week one. Deliverables you can click through, not status reports. You review every increment with the person who builds it.
Launch, measure, harden. Go-live is not a goodbye: support and iteration are part of the job, not an extra.
Are you from Venezuela 🇻🇪? Ask about a special price for you
from $4,000-5,000
Your idea turned into a real product in 4-6 weeks: design, development, deployment, payment or third-party integrations, and 30 days of support. Fixed scope, a clear launch date, and you deal directly with the person who builds it.
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A page designed to convert: showcase your product, capture users, or validate your idea before you build it. Custom design, analytics, and deployment included. Live and published in days, not months.
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Your product doesn't stop after launch: improvements, support, and new features every month, with guaranteed dedicated hours and priority scheduling.