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Marcelo Rosas

@marcelorosas

Message

Software engineer at Sovos building .NET microservices; cut document query latency by 65% with MongoDB Atlas Search.

Brazil

Message

At Sovos, I build and maintain .NET/C# RESTful microservices and React front ends using an AI-first workflow. I implemented MongoDB Atlas Search in a microservice, cutting document query latency by 65% to under 3 seconds.

At Banco Inter’s InterPag, I built APIs and microservices for a payment gateway processing about 1 billion transactions per month. I also developed a message-broker application for credit card transaction withdrawals and built a React application for the 3DS challenge flow.

At Insper, I led a team of four developers and designed an Onion Architecture Web API with OAuth/JWT authentication that became a scaffold for other projects. Across my work, I’ve built .NET systems for fintech, tax compliance, education and industrial companies, using practices including DDD, TDD and CI/CD.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Sovos

Jan 2026 - Present (10 months)

Build and maintain .NET/C# RESTful microservices and React front ends using an AI-first workflow. Implemented MongoDB Atlas Search, cutting document query latency by 65% to under 3 seconds.

C#.NET React PostgreSQL MongoDB Redis RabbitMQ Grafana AWS Azure DevOps AI assisted Development Devin Windsurf Claude Code

Software Engineer

Act Digital

Jun 2026 - Nov 2026 (5 months)

Developed AWS Lambda functions in Python and RESTful APIs in C# for a private lending platform. Used Spec Driven Development and GitHub Copilot as agent orchestrator.

C#.NET Python AWS Lambda MySQL MongoDB RabbitMQ Grafana Azure DevOps Spec Driven Development GitHub Co Pilot

Solutions Engineer

Air Products

Jul 2025 - Jan 2026 (6 months)

Built a React application to replace a legacy desktop workbook application and designed a .NET console application for data normalization. Developed AWS Lambda functions for data integration.

C#.NET React PostgreSQL AWS Lambda S3 Azure DevOps Hexagonal Architecture DDD Test Driven Development Claude Code GitHub Co Pilot

Software Engineer

Globant

Aug 2024 - Jul 2025 (11 months)

Built .NET/C# RESTful APIs and microservices for a payment gateway processing about 1 billion transactions per month. Developed a message-broker application with AWS SQS/SNS and a React application for the 3DS challenge flow.

C#.NET React SQL Server AWS SQS SNS Lambda Mass Transit Azure DevOps Onion Architecture DDD Test Driven Development SonarQube Veracode Refits

Senior Software Engineer / Tech Lead

Insper

Mar 2023 - Jun 2024 (1 year 3 months)

Led a team of 4 developers as technical lead, guiding technical decisions and code reviews. Designed an Onion Architecture Web API with OAuth/JWT authentication and built critical modules of the student enrollment application.

C#.NET Angular SQL Server Dapper SSIS Azure DevOps Onion Architecture OAuth JWT CI CD

Software Engineer / Tech Lead

Mooven Consulting

Sep 2021 - Jan 2023 (1 year 4 months)

Architected a .NET 5 web application on Azure and an Onion Architecture Web API for Insper. Led a 5-developer outsourced team for BNP Paribas and ran technical interviews.

C#.NET Angular SQL Server Azure AWS PHP Onion Architecture Technical Leadership

Software Engineer

Greenpass / Taggy

Apr 2020 - Sep 2021 (1 year 5 months)

Developed .NET 5 microservices on Azure with Docker, Kubernetes, SQL Server, Redis and Kafka. Implemented API endpoints with MediatR, CQRS and Entity Framework.

C#.NET React SQL Server Redis Kafka Docker Kubernetes Azure MediatR CQRS Entity Framework

Software Engineer

F5 Web Design

Oct 2019 - Apr 2020 (6 months)

Built a gadget-insurance web platform with .NET Framework 4.7, ASP.NET MVC/Web API, Entity Framework, SQL Server and Redis.

.NET Framework ASP.NET MVC Web APIs Entity Framework SQL Server Redis

Software Engineer

Amaris

Oct 2018 - Oct 2019 (1 year)

Built APIs and a Xamarin/WPF desktop CRM suite for a telecom client with .NET Core 3.0, GCP, Docker, MySQL, Redis and RabbitMQ. Implemented Facebook API integration for social engagement.

.NET Core Xamarin WPF GCP Docker MySQL Redis RabbitMQ MVVM Prism Facebook API

Software Engineer

iP3 Soluções

Jan 2010 - Dec 2016 (6 years 11 months)

Developed pre-legal and legal collections software with .NET, ASP.NET MVC, WebForms, WCF, Classic ASP and SQL Server. Built a pJax-based library for async page transitions.

.NET ASP.NET MVC Web Forms WCF Classic ASP SQL Server AJAX