Emais Network
Business networking SaaS platform: groups, events, tickets, rankings and finance with real payments via Asaas. Live in production for an in-person business network, evolving continuously.
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Curitiba, Brazil —
Software that makes it to production.
I'm João Moreti — computer engineer, software developer and founder of Dark Marlin. I build complete platforms — from architecture to deploy — with real users and real payments: web systems, integrations, data, and AI where it earns its place.
See projects ↓01 Selected projects
Real systems, in production or active use.
Yogha Sistema
The system the operation runs on every day to manage third-party properties: developments and housing units, owners, guests, maintenance and cleaning tickets, role-based access and audit logs. Built and evolved as an ongoing consultancy since 2024.
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Real-Estate Auction Intelligence
Turns scattered auction listings into a queryable base for deciding which property is worth looking at: 2,841 properties tracked, 615 still active and 3,516 price snapshots over time. Automated collection, a data-quality layer that quarantines incomplete records before they become a number, and panels for coverage, freshness and price movement.
WhatsApp Service Bot
Customer-service bot for WhatsApp that answers in a human, natural tone, grounded by RAG over the business knowledge base. Official WhatsApp Business API, hexagonal architecture and Supabase.
AI Social Media Pipeline
Ecosystem that generates, edits and publishes video content autonomously: LLM scripts, voice synthesis, video assembly and scheduled publishing, with monitoring and Telegram alerts.
ver o projeto →OctusForge — Octus-Naut
Single-product store for the Octus-Naut, a collectible toyart in a limited run of 100 numbered pieces, hand-modelled and hand-painted. The piece and its craft process, plus a purchase flow designed end to end — delivery, payment and review — on desktop and mobile. Freelance project.
Financial Sentiment Analysis
ETL system that collects news from multiple sources and classifies sentiment on stocks and ETFs with transformer models, producing structured insights for investment decisions.
02 Path
Developer and consultant, from first internship to founder.
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2021
Python Development Intern · Grupo Seccional
ETL pipelines and predictive models for precision agriculture; REST APIs, data analysis and test-driven practices, for 1 year and 3 months.
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2022
Backend Developer (C#) · Microdev
Features on an ASP.NET MVC system; query and ETL optimization improving efficiency by 40%.
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2023
Independent AI & full-stack developer
Freelance projects: RAG chatbots with vector databases, LLM integrations in production, dashboards and e-commerce landing pages.
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2024
Developer & AI consultant · Yogha
Ongoing consulting for a hospitality company: internal management platform and AI initiatives, from architecture to cloud deployment.
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2025
Founder · Dark Marlin
Software studio behind Emais Network — a SaaS live in production with real payments — and other client platforms.
03 About
B.Sc. in Computer Engineering (PUCPR) and one obsession: taking AI out of the notebook and into production.
I work as an AI developer and consultant — from RAG chatbots and vector databases to ETL pipelines for large data volumes, ML/DL models (NLP, forecasting, computer vision) and LLM integrations with fallback, monitoring and retraining. I also build the product around the model: APIs, frontends and cloud infrastructure.
Founder of Dark Marlin, the software studio under which I deliver complete platforms for clients.
- Based in
- Curitiba — PR, Brazil
- Education
- B.Sc. Computer Engineering, PUCPR
- Focus
- Applied AI, LLMs, data
- Languages
- Portuguese · English (C1)