Build what doesn't exist ready-made.
When no tool on the market fits, or only half fits, and the gap is being covered by hand.
Next.jsTypeScriptPostgreSQLStripe
Requirement → Product
There's a part of your business that only works with you on top of it.
A system that takes that part over — built for how your operation actually runs, and yours from day one.
What we do
Three things.
Make your systems talk to each other.
Management, payment, messaging, spreadsheet — each works alone and none speaks to the others. That is fixable.
Stripe ConnectWhatsApp / Evolution APIn8nSalesforceREST
Look after it once it's built.
Fixes, security and adjustments, with deadlines written into the contract. Not a favour, an agreement.
VercelCI/CDPlaywrightVitest
Clients
Two clients, two different operations.
Skating school, five locations, Rio de Janeiro.
The whole operation in a thirty-tab spreadsheet. Today: billing with delivery records, reconciled arrears, and renewal measured.
see Scintechn Gestão →Kite Suites.
Bookings, questions and requests arrived through scattered channels, each one waiting on someone being online to answer. Today: a new site with direct booking, an automated WhatsApp concierge, and a service alert on every request.
Work
- FlowDeski
Scheduling, billing and WhatsApp messaging for service businesses, with automatic rules and per-niche tailoring.
Next.jsPostgreSQLOpenRouter AI - Rentfy
Rent collected on its own, tenants organised, and a reminder before the due date, for people managing property.
Next.jsDrizzlePostgreSQL - Carna26 Rio
Event discovery and meeting people at Rio Carnival, with paid entry and data from the official sources.
Next.jsSupabaseStripe - Mayway
English with native teachers for Brazilian and Portuguese students, in a three-language experience.
Next.js 16TypeScriptTailwind
How I work
If one day you want to hand it to someone else, you just hand over the key.
Everything I build sits in an account in your name, with the documentation alongside it. No contract ties you to me — if our relationship ends, the work is still yours and another team can pick up where it stopped.
The first part working in two weeks, not a scope document in two months. And a quote before starting, always: nothing is built and billed afterwards.
When we're not the right choice.
If you need a simple brochure site, there's a ready-made tool that costs less. If you need a team of ten starting Monday, that's not us. If you want to outsource the product decision, also no — we work with you, not instead of you.
Talk to me.
Scintilla Lima — developer and founder. Send me the problem in two lines and I'll tell you if it can be solved, and how.