// custom software for businesses
We build and maintain the software your operation depends on: internal systems, WhatsApp and AI integrations, apps and APIs. Fixed scope before we start and a senior engineer accountable from diagnosis to support.
// Solutions
Every project combines one or more of these fronts. You tell us the problem, we design the solution and lock the scope before starting.
Web systems to run the business: records, finance, dashboards, admin panels and client portals, built around your process instead of the other way around.
We connect what your company already uses: WhatsApp, ERPs, payment gateways, marketplaces and AI, to take manual work out of the routine.
Apps for Android, iOS and the browser, from prototype to store release, with the API behind them.
A senior second opinion on code, architecture and infrastructure, including AI-generated systems.
// Case studies
A sample of what we have shipped, with real stacks and screens.
Shared solar energy
Photovoltaic Energy Management System
Comprehensive management system for photovoltaic energy companies with customer control, distributor management, financial analysis, and real-time solar installation monitoring.
View caseE-commerce / marketplaces
ERP for a marketplace seller
Stock, sales and logistics system for an operation with 5+ stores on Mercado Livre, Shopee and Amazon: API sales import, real profitability per marketplace, automatic invoicing, shipping labels, returns and a unified message center.
View caseFitness / consumer app
Workout app published on the App Store and Google Play
MV Dev Solutions' own product: a Brazilian workout-tracking app with humor, gamification and subscriptions, published on the App Store and Google Play and running on iOS, Android and web from a single codebase.
View caseHealthcare / mobile app
Treatment companion for GLP-1 medications
App for patients under GLP-1 treatment: dose reminders, daily symptom check-ins, an AI assistant grounded in official leaflets and automatic clinical alerts, with LGPD consents.
View caseFintech / crypto and taxes
Cryptocurrency Portfolio Management
Innovative application for managing and analyzing cryptocurrency operations with data import, report generation, exchange integration, and real-time monitoring for Brazilian tax compliance.
View caseHealthcare / Bitcoin payments
Bitcoin Payment System for Healthcare
Centralized Bitcoin payment gateway for Brazilian medical professionals with automatic fee processing and real-time blockchain monitoring.
View caseHealth and wellness / mobile app
AI-Powered Fitness Platform
Comprehensive fitness and wellness platform using artificial intelligence to create personalized workouts with nutritional tracking, progress analysis, and real-time coaching.
View caseTravel / SaaS
Airline Miles Flight Search Platform
Innovative platform for searching flights across multiple airlines using miles, with real-time monitoring and integration with Smiles, Azul, Iberia, American Airlines, United, and TAP.
View caseBlockchain / games
Web3 HODL Game on Solana
Decentralized Web3 game built on Solana blockchain where two players bet on who can HODL their tokens the longest without selling.
View case// Testimonials
“He delivered a clear technical analysis of the system, understood the issues raised and executed the agreed fixes with quality. We were very satisfied with the work, the communication and the dedication to solving the problems identified.”
“My app has many features and complex user interactions, which made the migration a big challenge. Even so, he completed 100% of the migration with excellence and delivered ahead of schedule.”
“Solid technical knowledge. Professional, efficient and reliable. Punctual. Excellent interaction and versatility according to the demand cycles.”
“Excellent professional, very competent, delivered every detail of the project and supported me throughout the process. I recommend him and will do new projects.”
“The project exceeded our expectations. We sincerely recommend the work, valuing the commitment, the contributions provided, the deadline being met and the good communication throughout the process.”
“Extremely competent, fast and efficient professional.”
// How we work
Price and deadline set before we start, deliveries you can follow, and support after launch.
A 30-minute conversation to understand the problem, what already exists and what needs to change. Free of charge.
Deliverables, deadline and price in writing. You know exactly what you will get and what you will pay.
Frequent deliveries in a staging environment. You watch the system grow and adjust course early.
Deployment, team training and 30 days of support included. Ongoing maintenance optional.
// Who is behind it
MV Dev Solutions is led by Milton Vacari, a software engineer with over 10 years building systems for companies in Brazil and abroad. The person you talk to in the diagnosis is the one accountable for the code at delivery.
// FAQ
It depends on the scope, which is why the first step is a free diagnosis. From it you get a proposal with a fixed price and deadline, with no open-ended hourly billing.
Automations and integrations usually take 2 to 4 weeks. Complete systems take 1 to 3 months, delivered in stages you can use before the project ends.
Yes. All source code, the database and the infrastructure accounts stay in your company's name. You are never locked in.
30 days of support are included in every project. After that, an optional monthly maintenance and evolution plan with priority support.
Yes. The work is 100% remote, with video calls and WhatsApp follow-up. We serve companies in Brazil and abroad, in Portuguese, English and Spanish.
Yes. We audit security, quality and architecture, fix what is critical and deliver a business-language report signed by a senior engineer.
// Contact
Describe the problem in a few lines. We reply within one business day, usually much sooner.
Reach us directly
Tell us what you need. Within one business day you get a reply with the next steps.
