Available to hire
Hi there! I’m André Tamietti Quintao, a software engineer with 16+ years designing and delivering large-scale distributed systems, cloud migrations, and cross-platform mobile applications. I enjoy turning complex problems into clean, scalable solutions and collaborating with global teams to ship value quickly.
I’ve led architecture and development across .NET, C#, Xamarin, Blazor, WPF, REST APIs, and cloud platforms, with a track record of modernizing legacy systems and enabling high-performing teammates. I’m passionate about mentoring, quality, and bringing a friendly, collaborative approach to engineering and product delivery.
Language
Portuguese
Fluent
English
Fluent
Work Experience
Senior Software Engineer at Plan A Technologies
September 1, 2024 - PresentLed design and implementation of distributed, cloud-based systems; improved scalability and performance across C#, .NET, Blazor, WPF, and REST API stacks; collaborated with global teams; mentored engineers.
Senior Software Engineer at Volt
May 1, 2024 - September 1, 2024Contributed to innovative digital marketing product; refactored legacy Blazor Server app, migrating toward Blazor WebAssembly; enhanced performance and user experience.
Software Architect at AmbevTech
January 1, 2022 - May 1, 2024Designed and implemented large-scale distributed systems in the B2B logistics sector; led cloud migrations for a partner company with thousands of users and dozens of systems. Contributed to multi-tenant SaaS refactoring using Strangler Fig Pattern, ACL, and Sidecar patterns.
Freelance Software Consultant at Mercantil do Brasil
January 1, 2022 - December 1, 2025Led migration and refactoring of the mobile app from Xamarin Forms to .NET MAUI; designed frameworks, components, and architecture; led a team of 3 developers; built CI/CD pipelines; refactored legacy backend integrations.
Software Architect at Ambev Tech
January 1, 2022 - May 1, 2024Designed enterprise-scale system architecture; led migration to .NET Core, REST APIs, and Azure; mentored teams; contributed to DDD, microservices, and CI/CD practices.
Feature Architect at Stellantis
June 1, 2021 - January 1, 2022Designed large-scale distributed systems in the B2B logistics sector; drove cloud migrations for partner clients; contributed to multi-tenant SaaS refactoring using Strangler Fig patterns; implemented Ring/DDD-oriented architecture.
Senior Software Engineer at CSU Card Systems
April 1, 2021 - July 1, 2021Refactored payment system; worked on Open Banking/Open API integrations; migrated to .NET Core; performance improvements and reliability enhancements.
Senior Software Engineer at Montreal Informática
August 1, 2019 - April 1, 2021Delivered high-quality development of the Mercantil do Brasil banking app using micro-frontend, micro-components, and modular architecture; refactored legacy systems to improve performance—achieved millions of downloads and thousands of new accounts. Built cross-platform mobile testing framework covering unit, UI, and load tests. Built and configured CI/CD pipelines and Azure DevOps integrations.
Senior Software Engineer at Montréal Informática
August 1, 2019 - April 1, 2021Delivered banking app with micro-frontend/micro-components approach; modular architecture; improved performance; built cross-platform mobile testing framework; implemented CI/CD pipelines.
Software Architect at SIGGA
December 1, 2018 - August 1, 2019Responsible for architecture and implementation of the Electronic Document Management (EDM) solution for a Brazilian government agency; implemented microservices in .NET Core, applied BDD/TDD, SOLID principles, data extraction, and system integrations.
Software Architect at Squadra
December 1, 2018 - August 1, 2019Architected and implemented Electronic Document Management (EDM) solution for a Brazilian government agency (ANTT); built microservices in .NET Core; data extraction, web scraping, and integration layers.
Senior Software Engineer at SIGGA
October 1, 2016 - November 1, 2018Designed and developed the TO TVS eduCONNECT app for iOS and Android; created a white-label architecture enabling dynamic UI and screen generation, significantly reducing customization costs.
Senior Software Engineer at TOTVS EduConnect
October 1, 2016 - November 1, 2018Developed mobile app integrations for SAP PM module; designed dynamic UI and modular architecture to enable rapid mobile feature generation; conducted UI and UX improvements; released apps to App Store and Play Store.
Senior Software Engineer at SIGGA
October 1, 2014 - November 1, 2016Contributed to global technology contracts; designed B2B API spanning business systems, car dealership platforms, payments, and mobile apps; supported validation and release cycles for mobile apps.
Senior Software Engineer at Zurich Insurance
June 1, 2013 - September 1, 2014Worked on core insurance platforms; API redesign; data extraction and integration improvements; ensured reliability and performance in complex enterprise systems.
Senior Software Engineer at MIP
April 1, 2012 - June 1, 2013.NET solutions for the construction sector: Silverlight, Windows Mobile, Entity Framework, MVVM.
Software Architect at Tech Biz
June 1, 2011 - March 1, 2012Architected enterprise solutions using .NET; designed MVC/MVVM patterns and modular architectures; guided early career developers.
Education
MBA at Pontifical Catholic University (PUC)
September 1, 2023 - April 9, 2026MBA at Pontifical Catholic University (PUC)
February 1, 2011 - August 1, 2014Bachelor's at UNA University
July 1, 2006 - June 1, 2010MBA — Cloud Engineering at Pontifical Catholic University (PUC)
September 1, 2023 - June 30, 2026MBA — Software Architecture at Pontifical Catholic University (PUC)
February 1, 2011 - August 1, 2014Bachelor's Degree in Information Technology at UNA University
July 1, 2006 - June 1, 2010Qualifications
Industry Experience
Transportation & Logistics, Software & Internet, Gaming, Media & Entertainment, Financial Services, Government
Hire a Full Stack Developer
We have the best full stack developer experts on Twine. Hire a full stack developer today.