Engineering & Platforms
Software
built for real
businesses.
Custom SaaS platforms, multi-tenant POS systems, AI integrations, and backend infrastructure. Built for the Brazilian market — delivered with precision.
What We Build
End-to-end platforms.
From architecture to deployment. Every system is designed for scale, white-label flexibility, and production reliability.
01
SaaS & Multi-Tenant Platforms
White-label architectures with tenant isolation and custom branding per client. One infrastructure, multiple clients — each with their own identity and independent configuration.
02
POS & PDV Systems
Full-featured POS with integrated WhatsApp, PIX payments, loyalty program, delivery management, TV display, and waiter module. Running in production in Brazil.
03
AI Integrations
Chatbots with live business data access via WhatsApp, automated content generation, and intelligent automations integrated into existing workflows. Gemini and Meta API.
04
Backend Infrastructure
PHP/MariaDB in production — shared hosting or self-managed VPS with Hyper-V. Push notifications, webhooks, CRON, queues, and API layers built for the real world.
05
Automation & Integrations
WhatsApp Business, PIX, NF-e, Microsoft Graph API, and external APIs. Webhooks and CRON for processes that run without human intervention — notifications, syncs, and automated reports.
06
Web Systems & Portals
Institutional websites, client portals, and admin dashboards with advanced technical SEO, Schema.org, multilingual support, PWA, and Google-optimized performance.
07
SEO & Local Search
Technical SEO strategy for local businesses — Schema.org LocalBusiness, automated sitemaps, service landing pages, Search Console integration, and rank tracking.
08
Member & Student Management
Portals for gyms, schools, and transport operators — registration, monthly billing, automatic WhatsApp notifications, client portals with PIX, and role-based access control.
09
Accounting & Financial Management
Systems for accountants and businesses — P&L, fees, certificates, powers of attorney, entries, and automatic sync with POS systems. Reports and due date alerts.
10
Transport & Logistics
Management platforms for school transport and fleets — routes, students, invoicing, vehicle maintenance control, guardian notifications, and PIX payment portal.
11
Websites for SMEs
Professional websites for small and medium businesses with content management, multilingual support, PWA, local SEO, and WhatsApp integration. From concept to live in weeks.
Technology Stack
Built on what works.
No over-engineering. From bare-metal Windows Server 2025 and Hyper-V in the Netherlands to shared hosting in Brazil — the right tools for production systems that perform reliably under real-world constraints.
Live Projects
Platforms we built.
Real systems running in production for real clients.
Lojas do Gringo
Full multi-tenant white-label POS system. Touch POS with waiter app, kitchen and TV display, delivery and takeaway, loyalty and raffles, WhatsApp inbox via Meta Cloud API, PIX payments, customer portal with Apple/Google Wallet, push notifications, property rental module, AI chatbot and Python monitoring scripts.
Mejiro Gym Drenthe
Custom platform for a Dutch kickboxing gym. Member administration with OneDrive sync, student portal with magic link auth, trainer profiles with photo and bio, gala scheduling and fighter profiles, cancellation module, WhatsApp 2FA, AI-generated rotating content and integrations with MS365, Google Reviews and Gemini.
Rijschool Jolanda
Dutch driving school website with advanced technical SEO, Schema.org, location-specific landing pages, automated sitemap, Google Reviews sync, mobile admin PWA, Instagram integration via SociableKit and bot protection via Imunify360.
KV-Moto
Website for a Dutch motorcycle garage specializing in suspension service. Full admin panel, SEO module with landing pages, crawler tracking and Search Console integration, AI-generated weekly tips via Gemini, Google Calendar and MS365 sync, WhatsApp 2FA authentication and magic link invite system.
SDO Contabil
Accounting system for a Brazilian accountant. Tax regime checklists, fiscal calendar, certificates/CNDs, accounts receivable, P&L with period comparison, document uploads, company health score, full CMS and bidirectional data sync with Lojas do Gringo.
OlaConvite
Digital event invitation platform with guest management, online RSVP, PIX QR code payments and admin panel.
RL Transporte Escolar
School transport management platform with invoicing, WhatsApp notifications, parent portal with PIX payments, Excel student import, vehicle maintenance module with alerts, dynamic sitemap and PWA.
Resources
Guides & Solutions
In-depth pages on specific platforms, integrations and use cases.
Tax automation for your business
Automate NF-e, NCM and tax document issuance. Integration with Brazilian tax compliance systems in Minas Gerais.
Digital commerce, simplified.
ComGo is Lassatec white-label digital commerce platform. POS, loyalty, WhatsApp, TV Display and more.
ContaFácil – Accounting Compliance for MG
Accounting compliance system for Brazilian accountants. Tax-regime checklists, fiscal calendar, document uploads and multi-level access control.
Your SaaS platform developed from scratch
SaaS platform development from scratch. PHP, MariaDB, multi-tenant architecture and infrastructure for the Brazilian market.
Robust backend for production systems
Robust backend systems in PHP 8.2 and MariaDB. Push notifications, CRON, webhooks and REST APIs for production.
PIX integrated into your system
Integrate PIX into your system natively. Automatic billing, dynamic QR code and instant payment confirmation.
WhatsApp integrated into your business
Integrate WhatsApp Business into your system. Automatic notifications, AI chatbot and conversation management for Brazilian businesses.
Digital invitations that impress
OlaConvite is a digital invitation platform for events with guest management, online RSVP and PIX payments. Built by Lassatec.
Your SaaS platform with your brand
Build your own SaaS platform with custom branding per client and data isolation per tenant.
Real-time delivery management
Manage deliveries, drivers and orders in real time. Integrated with WhatsApp and PIX for Brazilian food service.
Complete POS system for your business
Complete POS system with PIX, WhatsApp, loyalty and delivery. Built for the Brazilian market.
Ready to build?
Let's talk about your platform.
Tell us what you need. We scope it, architect it, and deliver it.
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