// available for new projects
7+ years building REST APIs, async workers, and microservices architectures at companies like Havan and Itaú Unibanco. I also handle Angular/React front-ends and help teams on demand: fixing bugs, deploying to AWS/Azure, or unblocking a stuck deploy.
01 · About
Backend developer with 7+ years of experience in retail (Havan), banking (Itaú Unibanco), and consulting (Cognizant). Specialist in C# and .NET — from .NET Framework to .NET 10 — working with REST APIs, workers, microservices, and high-volume integrations via RabbitMQ and Kafka. Solid experience with Clean Architecture, DDD, CQRS, and SOLID, relational and NoSQL databases, plus resilience practices (retry, outbox, reprocessing), observability, and CI/CD in production environments with agile teams.
I work as an independent developer for companies and squads that need a new API, an asynchronous processing service, or help designing/migrating a monolith architecture to microservices.
02 · Experience
Software Developer Analyst
Worked across the CRM and Logistics teams, developing, analyzing, and maintaining REST APIs, workers, and microservices critical to the company's operations.
Software Developer Analyst
Contracted work at Itaú Unibanco, on the Real Estate and Consortium teams, developing and maintaining internal systems supporting customer service.
03 · Services
From a brand-new project to one-off support on something already in production.
Design and development of REST APIs from scratch, with authentication, validation, and documentation (Swagger).
Design of event-driven architectures with Kafka/RabbitMQ, resilient queues, and the outbox pattern.
Front-end screens and integrations consuming your APIs — from a simple form to an admin dashboard.
Deploying projects to AWS or Azure, containerization with Docker, and CI/CD pipelines with GitHub Actions.
Inherited a project nobody maintains anymore? I diagnose it, fix it, and leave it documented.
Review of an existing project or a migration plan from monolith to microservices.
04 · Stack
05 · Projects
Portfolio and study projects with public code on GitHub — architecture designed for production, not just prototypes.
A loyalty platform that converts purchase change into points tied to a customer ID. The API validates and persists transactions in Oracle idempotently using the outbox pattern; a Worker consumes events via RabbitMQ and credits points, with a dead-letter queue for failures.
A WhatsApp integration platform structured in layers (Domain, Application, Infrastructure, API, and Worker), deployed on AWS — designed to process messages asynchronously and at scale.
A microservices-architecture API communicating via Kafka: Catalog, Order, and Notification services, MongoDB database, Azure deployment, and a CI/CD pipeline with GitHub Actions.
A teaching example of event-driven architecture in .NET, with clear layer separation (Domain, Application, Infrastructure) to demonstrate the flow of domain events.
A real-time chat built with SignalR on an ASP.NET Core API, consumed by an Angular front-end — bidirectional communication over WebSockets.
A REST API with an asynchronous consumer that reacts to events published via RabbitMQ to generate reports on demand, without blocking the original request.
Hands-on studies of asynchronous and parallel programming patterns in C#, applied to batch-processing scenarios.
A .NET API Gateway built with Ocelot, routing and aggregating calls to internal services, with health checks and resilience via Polly (retry/circuit breaker).
A high-throughput file import pipeline (target: 1 million rows in under 2 hours), built with Clean Architecture, CQRS, the outbox pattern, and an async worker for background processing.
More projects and experiments at github.com/tavoks
06 · Contact
Message me directly on WhatsApp or send an email describing what you need — a new API, a processing worker, a migration to microservices, or architecture consulting. I respond fast.