Architecture and SaaS products
We design and build multi-tenant SaaS platforms from scratch: domain modeling, APIs, billing, permissions, queues and infrastructure. Modular monoliths that scale without turning into technical debt.
Where engineering and AI converge.
Vertex Labs designs software architecture, integrates complex systems and builds SaaS products with applied AI in production. Senior engineering, from the first diagram to deploy.
Vertex, from Latin: the highest point, and the point where lines converge.
Companies we serve
QuestMed
Presto
Igarapé ImobiliáriaRA Imobiliária
End-to-end engineering
We don't sell hours, we deliver working systems. Every project starts with architecture and ends in production, with observability and documentation.
Applied AI
AI that solves business problems, not slideware. RAG over knowledge bases, Text-to-SQL for natural language data queries, function calling, agents and multi-LLM orchestration, always with a validation and governance layer to prevent hallucination on critical data.
Data and integrations
Multi-layer datalakes, pipelines, integrations with payment gateways, ERPs and third-party APIs. Reliable, traceable data, ready to power products and AI.
Operations and infrastructure
Docker, CI/CD, managed VPS, monitoring and alerting. We also run what we build: stable environments, backups and incident response.
Work
Built by Vertex Labs
16QuestMed is a web platform for medical residency and exams such as ENAMED and Revalida. It offers more than one hundred thousand commented questions from Brazilian exams, with filters by specialty, topic and exam board. Students answer questions, track performance, take mock exams, organize their study schedule and review content through scheduled revision.
QuestMed Studio turns study materials into ready to review content. Users upload books, handouts, PDFs, images, audio or YouTube links; the platform interprets the content and generates a quick summary, full summary, flashcards, mind map and practice questions. For long works, it detects chapters from the table of contents so users can choose what to study.
Digital portal for rental guarantee and lease letter of guarantee. Tenants request residential guarantee online, complete credit assessment, submit documents and finish the contract without a guarantor, deposit or rental insurance. Also available to landlords and registered real estate partners on the platform.
Platform for real estate acquisition with payment over time through a consortium model. Buyers choose a property, register and complete online credit assessment, and may occupy the home after joining, before quota contemplation. It structures long term installments with a focus on predictability as an alternative to traditional financing.
Modo Seguro Hub
Modo Seguro Hub centralizes policy issuance and termination for partners selling insurance. It exposes an API with staging and production environments, accepts flexible per-company data formats, and delivers final outcomes via webhook. A partner portal lets partners manage access keys, callbacks, and production access requests.
Copiloto Financeiro MEI
Financial management and tax guidance platform for MEI entrepreneurs. It centralizes income, expenses, DAS payments, invoices and owner withdrawals, with an assistant to clarify business obligations. It helps entrepreneurs track limits, deadlines and daily decisions without spreadsheets.
Me Escala is a multi-tenant SaaS that helps churches organize volunteer schedules for Worship, Media, and Diaconate teams. It centralizes services, departments, availability, and attendance confirmations, replacing spreadsheets and messaging groups. Managers, leaders, and volunteers track schedules, check-in, and availability in the browser.
Forja Elite is a fitness coaching platform connecting students and personal trainers through personalized workouts, gamification, and progress tracking. Trainers manage students, exercises, and routines in a web dashboard; students also receive reminders and support via WhatsApp.
Urbanix V3.0
Urbanix V3.0 is a digital municipal code enforcement system for city governments and urban control agencies. It replaces paper-based processes with a centralized workflow for registration, formal notifications, enforcement records, and operational monitoring with dashboards and a geographic map.
Controladoria Repromaq
Web-based controllership platform that centralizes accounting entries, reconciliation, and reporting. It integrates the chart of accounts, general journal, and data import, with AI-assisted suggestions. It serves operations seeking to reduce manual reviews and keep accounting routines in a single online environment.
Presto Portal is an authenticated web portal for Presto Tecnologia. It provides separate login flows for internal staff and clients, each with its own access type. It centralizes digital services in a single entry point, with a responsive interface and Presto branding.
Presto · Cash Flow Panel
Web-based cash flow panel within the Presto Controladoria suite. It serves finance teams that need to track balances, inflows, and outflows in a unified environment, replacing scattered controls. Access is through the browser, with individual authentication to view the operation's financial position.
Igarapé Imobiliária is a web system for managing pending items in real estate operations. It centralizes tracking of open demands in internal team processes, with login-restricted access for authorized staff. The application supports querying and updating the status of day-to-day operational pending items.
ImobiFinance Pro is RA Imobiliária's web system for authorized staff. The public page highlights intelligent and secure access management in an audited, encrypted environment. The platform centralizes authenticated login to internal capabilities that support real estate operations, available to credentialed team members via browser.
Data platform with an AI layer
Multi-tenant, multi-layer datalake (domain, source, layer, dataset) with natural language discovery and querying. A governance layer validates AI answers against real data before they reach the user, eliminating hallucinated metrics in a financial context.
AgentGrid
Internal server orchestration platform: AI agents on each VPS running maintenance tasks via tool use, with task history, a dashboard and Telegram alerts.
How we work
A direct process, no useless ceremony
Technical diagnosis.
One call to understand the problem, the current system and what success means. Free, and delivered in writing.
Architecture before code.
A proposal with scope, solution design and acceptance criteria. You know what you'll get before you pay.
Sprints that ship.
Short cycles with running software at the end of each one, planning on Monday, review on Friday.
Production and operations.
Deploy, monitoring, documentation and knowledge transfer. No forced dependency.
Stack
TypeScript end to end. Vue 3 and Nuxt on the frontend, NestJS and Node.js on the backend, Prisma with PostgreSQL, Redis and BullMQ for queues, Docker and Linux in production. AI with Anthropic and OpenAI APIs, RAG architectures and tool-using agents.
Frontend
- TypeScript
- Vue 3
- Nuxt
Backend
- Node.js
- NestJS
- Prisma
Data & queues
- PostgreSQL
- Redis
- BullMQ
Infrastructure
- Docker
- Linux
- CI/CD
Applied AI
- Anthropic
- OpenAI
- RAG
- Tool-using agents
A lab, not a factory
Vertex Labs is led by Daniel Amaral, a senior fullstack engineer with over a decade building systems for companies in Brazil and abroad. The name says what the company is: the vertex is the highest point, and the point where lines converge. That's where we work, at the intersection of software architecture, data and applied AI.
"Labs" isn't decoration. Beyond client work, we build our own products, and that's what keeps the engineering sharp: whoever runs their own SaaS doesn't ship duct tape to others.
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