milocaetano

Develop tools and platform features for HealthEquity, a US financial-services company, supporting account management, recurring contributions and the automated workflows that process client transactions at scale. Engineer the systems that execute investment operations on behalf of clients — auto-invest, portfolio rebalancing and programmatic order placement against custodial accounts — implementing the technical execution layer rather than the underlying investment strategy. Build and maintain the backend services that handle movement of client funds between cash and investment positions, enforcing eligibility, contribution limits and settlement rules so every operation is correct, auditable and reversible. Design financial workflows that operate at high transaction volume, with idempotent processing, reconciliation and end-to-end traceability so reliability and regulatory compliance are first-class concerns rather than afterthoughts. Build and maintain microservices on a .NET, Python and Azure stack, focused on scalability and performance for production financial operations serving a large US customer base.

Designed and built microservices in Node.js and .NET Core for a digital sales platform delivering products across mobile and web. Implemented serverless architecture on AWS (Lambda, API Gateway), containerized with Docker, with CI/CD on Travis and infrastructure as code in Terraform.

Built from the ground up a high-volume document import and publishing system for Imprensa Nacional (Brazil's official gazette), handling large daily volumes of legal content. Stack: .NET Core 2.0, Entity Framework, ASP.NET MVC, REST APIs and Apache Kafka for asynchronous, high-throughput message processing.

Developed a Bloomberg-style real-time financial-markets news terminal in C# (WinForms / WPF), delivering market news to traders with low latency. Built real-time data distribution over ActiveMQ messaging and WebSockets, with C++ and XSLT integration components.