Alysson Alcântara

AI-native role, from discovery to deploy: coding agents with a human gate at every step; I decide architecture and contracts, and delivery goes through review and peer testing.

• Built the Seazone App, replacing 5 apps with a single login (IDP) because franchisees dropped property referrals without knowing which system held them, and the @seazone-tech/ui design system underneath it: semver, 718 tests across 30 components, accessibility measured with axe-core, and a 1-2 min CI per PR
• Moved 15 phases of the contract termination workflow from manual pipelines to automation on the Django backend (Celery, ClickSign and Pipefy webhooks), with fail-closed financial verification: a debt found after signing becomes unrecoverable. Validated with the process owner on a golden set of 42 cases
• Built the Activity Center, a real-time chat over WebSocket (Django Channels) that became the single channel between franchises and the internal team and retired the third-party tool. Response time is now measured: median down from 2.7 to 1.6 business hours within a month, with 97% answered the same day
• Built solo, from PRD to deploy, the market intelligence platform covering 1,700+ cities and ~190K listings (Airbnb, Booking, Expedia, Decolar via AWS Athena), with a conversational agent over the data
• Own the governance of AI-assisted development across the team's repos (internal MCPs, agent rules, CI gates) and co-built the AI-driven workflow adopted as the standard across squads and SRE
• Operate what I ship: GitOps deploys (ArgoCD + Helm, HPA in production), debugging with Grafana (Prometheus, Loki, Tempo), backend tests parallelized (pytest-xdist), and the develop → staging → main flow locked in CI

seazone.com.br, Seazone's vacation rental booking e-commerce (storefront, search, checkout, and payments), mobile-first. Next.js + TypeScript + Tailwind + Python.

• In the migration from Asaas to Tuna (orchestrator with Cybersource anti-fraud), implemented 3DS authentication on checkout, payment status over SSE, and the anti-fraud device fingerprint, fixed duplicate payment requests, and debugged the integration with Tuna's engineers; also integrated PayPal, Pix, and Pagarme. Monthly chargebacks after migration: R$140k → <R$10k (~93%)
• Authored 16 of 30 experiments in the project (including search filters and new homepage running at scale) as owner of the experimentation infrastructure: TestManager service with multi-provider architecture (PostHog for experiments, GrowthBook for feature flags), server + client with experiment caching and server-side flag bootstrap, later extracted into an internal library and adopted as the standard across other Seazone projects
• Delivered +13% in click-to-pay and +9% in paid reservations over 8.8k users (PostHog, Mar-Apr 2025), taking on a no-login checkout flow iterated through 3 sequential experiments; also took on the late-checkout flow
• Cross-stack with Python (FastAPI): OpenSearch for queries on the city filter in promotions, WhatsApp integration for abandoned cart, and server-side env-gating of PostHog
• Cut CI cost and deploy time for the team (bun early adopter → pnpm, multi-stage Dockerfile, deps cleanup) - image 6.7GB → 388MB (~94%) and build ~50% faster; sequential Next.js upgrades (13, 14, 15)
• Onboarded and mentored a new developer on the booking team over 3 to 4 months

Intensive frontend engineering bootcamp. Led 3 consecutive cohorts of ~40 students (ages 20 to 60+) in 3-month cycles, totaling ~120 students during the period.

• Mentored 5 students hired into international roles in Germany before course completion (~10 total employed before finishing), in a bootcamp with 98% reported employment rate within 6 months during the period

Seazone's internal multi-role platform that digitalized operations previously run on spreadsheets and messaging apps. TypeScript + Python monolith built by a lean team; I joined as one of the first frontends.

• R$1M+ disbursed to 159 partners since launch as sole developer end-to-end of the Partners portal: PWA-first dashboard for Seazone's referral program (partners earn a percentage on reservations they referred), replacing the manual report previously sent via Google Scripts + spreadsheets
• Sole developer of the pre-checkin module end-to-end: original feature, API integration with cross-stack contributions in Python (Django), and three subsequent refactors; digitalized a pre-arrival process previously run on spreadsheets + messaging apps
• Bootstrapped Jest and Cypress testing and the release standard with automatic versioning and cache clearing; primary frontend reviewer, with more code reviews than PRs I authored in the period

QR-code service ratings, born at Hacking Rio 2019 and incubated by BR Distribuidora; 4-person founding team.

• When adoption stalled in the 3-month pilot across 3 BR Distribuidora gas stations, built a gamified attendant ranking with a prize: the pilot passed 400 ratings a day. Then came the first paying customer (1-year contract)

UENF junior enterprise for external clients (CNPJ, ~R$8k cash flow, collective governance).

• Delivered ~3 React projects for external clients (UX/UI + dev) under senior-student mentorship, grounded in Git and code review