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Erick Vinícius

@erickvincius

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AI Product Engineer building RiVolto, a paid Italian-market PWA, and AI WhatsApp concierge Stay.o.

Brazil

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What I'm looking for

I’m open to remote work worldwide, as a contractor or through an EOR.

I built and launched RiVolto, a paid PWA for the Italian market, from its quiz funnel and sales page through purchase-triggered access. It went from first commit to paid launch in 15 days.

For RiVolto, I used Cloudflare Workers and Supabase Postgres, added more than 500 automated tests, and designed for privacy so health data stays in the browser. I also translated GDPR and other EU regulations into code and copy decisions.

On Stay.o, my personal project, I built Stela, a WhatsApp concierge for hotels that uses LLaMA 3.3 and Whisper. It includes guest conversation memory, automated pre-arrival messages, and alerts that route guest needs to hotel departments.

My six years of guest-facing work in five-star hospitality in Brazil and Portugal inform how I approach hotel products. I’m comfortable working with customers and handling pressure and ambiguity.

Experience

Work history, roles, and key accomplishments

Current

Founder & Sole Engineer

Current

RiVolto

Sep 2026 - Present (1 month)

Designed and shipped a 33-screen quiz funnel, sales page, and mobile-first PWA delivering a 28-day program with magic-link access after purchase. Built backend on Cloudflare Workers and Supabase Postgres with ports-and-adapters design, wrote 500+ automated tests, and implemented privacy by design for GDPR compliance.

NodeJS Hono Cloudflare Workers Supabase PostgreSQL PostgREST JavaScript Node Testing GitHub Actions Claude Code GDPR Testing Automation

Current

Sole Developer

Current

Stay.o

Feb 2026 - Present (8 months)

Built Stela, a conversational AI concierge on WhatsApp with per-guest memory, voice-note transcription, and hotel-policy injection. Automated pre-arrival messaging and built an alert system routing guest needs to hotel departments.

NodeJS Express MySQL Twilio WhatsApp GROQ Llama 3.3 Whisper JWT Bcrypt Rate limiting Node Cron React

Construction Site Supervisor

Pavini Engenharia

Jan 2024 - Dec 2025 (1 year 11 months)

Supervised mid-to-large building projects, coordinating teams, scheduling, and technical documentation.

Senior Receptionist

Hplus Hotelaria

Feb 2021 - Jan 2024 (2 years 11 months)

Served international and VIP guests, resolved incidents, and coordinated across departments at 5-star hotels.

Night Auditor

Larr Hotel

Sep 2022 - Nov 2022 (2 months)

Performed end-of-day financial reconciliation and occupancy reporting during an international assignment.

Freelance Musician

Self Employed

Jan 2019 - Dec 2021 (2 years 11 months)

Worked as a freelance musician.

Reception Supervisor

Grand Bittar Hotel

Oct 2015 - Dec 2018 (3 years 2 months)

Promoted to supervisor, led the front-desk team, handled VIP check-ins and escalations at a 5-star hotel.

AI Product Engineer

Self Employed

Full-stack developer shipping AI-powered products end to end, from database schema and CI to privacy compliance and go-to-market. Built and launched RiVolto, a paid PWA for the Italian market, and Stay.o, an AI WhatsApp concierge for hotels.