Appointment booking with a Pix deposit for confirmation. Client, team, scheduling and payment management.

sinalpix.com.br

Automatic retention and upsell for pet clinics: vaccine and deworming reminders with a sales funnel and AI automation.

vacina.pet

Full outreach pipeline: leads sourced from Google Maps and company registries, WhatsApp and email dispatch with a per-lead Stripe coupon, funnel tracking through conversion. Multi-tenant, API-first.

zaptura.com.br

Privacy policy, terms of use and an LGPD compliance checklist generated by AI for small businesses, with real articles of the Brazilian data protection law embedded in the document.

termos.ansuz.dev.br

Every calendar, one availability: unifies Google and Microsoft calendars, mirrors events across them and offers a public booking page with real-time availability.

calendarsio.com

Splitting bills with friends, in plain language. No fees, no sign-up.

rateei.com.br

Jackbox-style party quiz: the TV shows the question, each player answers on their own phone. Real-time rooms and gamified progression.

geniada.com

Marketplace connecting clients to tattoo artists by style, technique and region, with client briefing, geolocated matching and artist portfolios.

tatuari.com

The shopper scans a product barcode with the camera, sees an AR reward on top of it in real time and redeems a coupon by magic link — no app, no password. Brand campaign with transactional anti-fraud.

ar.ansuz.dev.br

Registration, scheduling, prescription, notification and billing as independent services, with admin, back-office and B2B portals plus physician and patient apps. Eleven services in production. NestJS · Kong · MongoDB · React · AWS EKS.

The public body defines the form and criteria for each call and receives applications through the public channel, all the way to accountability reporting. 39k processes, 117k openings, a base of 2.1M candidates. NestJS · MongoDB · Next.js · GCP.

An eight-year-old core with over 12k commits migrating piece by piece, with the legacy still serving while the new generation takes one route at a time behind a canary sampled per request — not per client. Express/MySQL → NestJS/MongoDB · OpenTelemetry.

A conversation with the patient applies the Manchester protocol adapted to telemedicine and classifies the case into four risk levels; severe cases reach the physician already prioritized. TypeScript · Fastify · AWS Bedrock · Claude/GPT.

A matching engine ranks candidates by proximity, profile and job fit with auditable criteria, also exposed to AI agents via MCP. A base of more than 2M young people. Angular · Node · MySQL · Vertex AI.

Prompts and conversation flows versioned in production; 100% of sessions analyzed for intent, friction and quality, raising bot self-resolution. Go · Next.js · pgvector · RabbitMQ · Asterisk.

A model judges the issue against its category rubric, hunts the gaps the rubric misses and lists the questions an implementer would ask, before it becomes work. It warns and logs instead of blocking the queue. In development. Go · pgvector · Next.js.

Brazilians abroad consult Brazilian physicians and leave with a digital prescription; a three-language product with international payments, live in the US and Colombia. NestJS · MongoDB · React · EBANX.

Companies and health plans offer telemedicine to their members: each partner manages contracts, members and dependents in its own portal, loaded by integration or import. NestJS · Express · React · PostgreSQL.

Three models answer different parts of the phenomenon — trend, calendar and recent context — and an ensemble combines the forecasts, validated in temporal order rather than by random shuffling. Python · Prophet · XGBoost · FastAPI.

Sizes the minimum team per period against forecast demand, with a fixed charge per activated physician — that is what makes the solver concentrate the roster instead of spreading it. Python · FastAPI · OR-Tools.

Screening with validated clinical instruments and automatic referral of at-risk cases; HR only ever receives aggregate indicators, with a floor of five respondents to prevent re-identification. Next.js · Postgres · Jitsi.

Twelve carriers queried through the best available path, with an evidence trail per lookup and a drafted email to the client — never sent automatically. The first measurement found 7 of 8 arrival dates stale. Pilot. Python · Playwright.

The commercial operation left the spreadsheet: automatic recurring billing, reconciled receivables and self-service sign-up on the site. 1,357 contracts migrated at cutover without interrupting billing. Next.js · Postgres · Stripe.

A finance, tax and payroll ERP moved from an on-premise server to the cloud, preserving the corporate directory and tax routines; cutover in a maintenance window with no tax-data loss. AWS EC2 · VPN Site-to-Site · SQL Server.

From fundamentals to applied topics (LLM, RAG, ML, MLOps, MCP), grounding every concept in real problems of the operation; the board left able to prioritize opportunities on its own judgment.