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I designed and developed an API Gateway for Edenred, whose goal was to provide a BFF (backend for frontend) to the front-end development team.

The core features were:
• Routing from up-stream to down-stream HTTP requests;

• Provides a hook to implement command handlers with custom logic in C#;

Both these features were provided through a configurable mechanism, so for each up-stream HTTP request on the Gateway (i.e. a frontend client calling), we had a respective down-stream HTTP response, that could be either a down-stream URL (i.e. a microservice endpoint) or a command handler with a custom C# implementation.

Besides the core features, the API Gateway also offers:
• Caching
• Logging
• Security

I worked as architect and tech lead on an enterprise application portal to the Sonae Sierra, whose goal is a digital transformation through leveraging the communication between centres and tenants, simplifying some internal processes, improving the communication between the administration of the Shopping Centres and the Stores, and delivering more value through custom services to stores/brands, to leverage their business and brand value.

Our solution consists of the following stack:

In the front-end, we have a SPA application (single-page application) for the desktop;

In the back-end:
• I developed an Identity Provider (IdP) middleware, designed as a microservice, powered by Identity Server4 [OAuth2+OpenID Connect]

This middleware is responsible for Identity and Access Management (IAM) tasks, such as:
• Safely storing account-related information in a central location and reuse across applications; • User registration and user management;
• Password policies, strength, resets, and 2FA;
• Single sign-on (SSO) and single logout;

I designed the back-end solution through the Clean Architecture (a.k.a. Onion or Ports and Adapters)
• I implemented CQRS [Commands with EF Core and Queries with Dapper] which provides these key benefits:
• A task-based interface, which greatly improves the user experience;
• Keeps the domain model much cleaner as it eliminates the responsibility to provide queries through the model;
• Significantly increases scalability and performance;

At the heart of the software, our domain model lives, containing all the knowledge and business rules, expressed through the ubiquitous language that we are refining with each iteration.
To achieve that, we are using DDD extensively, and I'm disseminating knowledge about the DDD building blocks.

I worked as architect and tech lead on a Gift Card e-Commerce to the Sonae Sierra

This project was a great challenge, as our deadline was very short, only 2 months and a few days! And that date was not negotiable, as to deliver after that, would mean losing Black Friday sales.

Despite this, we were successful: In addition to reaching the deadline, we deliver the product on time and with good quality!

I had to choose a simple (but powerful) stack: ASP.net Core Razor Pages and EF Core. No SPA (single-page application), so no REST API for the client, which saves a ton of time!

Despite the short term, I decided to keep the unit tests, code analyzers, and the most important part of the DDD, that is, creating a rich domain through good OOP modeling with Aggregates / Entities and ValueObjects and BoundedContexts well designed - as the model is quite simple, this was not a problem. Also, giving up good OOP modeling will never (believe me) make a project go faster. In fact, it will do the opposite.

I designed the architecture through a subset of the Clean Architecture (a.k.a. Onion / Ports and Adapters) and implemented a message queue to process orders through Azure Storage Queue and Azure WebJobs.

We integrate with IfThenPay for MBWay and Multibanco for payment methods and with CTT and YouShip for delivery.

Of course, none of this would be possible if we were not fully committed to success - A great team = Great results!

I developed a Bot to automate the firmware configuration of hundreds of printers at BPI bank, using C# with SpecFlow. And I got the following result: Configuration of 500 printers in 1 hour (average).

• I worked in an ERP created as SPA (single-page application) for an auction company called Pestana Leilões.

In this project, we used ASP.net Core, DDD, Vue.js, CI/CD, and CQRS with NHibernate and Dapper, enforcing domain rules with Design by Contracts and Specification Pattern. I'm using some of the main building blocks of DDD as well as Design Patterns as needed.

• I worked on a RESTful API project for a clinical laboratory called Fleury whose goal is to migrate mostly legacy code base processes to a new, more maintainable, and extensible stack.

I developed this project using ASP.NET Core and Dapper, enforcing rules in the domain with Design by Contracts, and handling errors with Domain Notification.
Implemented Roslyn diagnostic analyzers with StyleCop, FxCop, Roslynator, and so on to ensure code quality.

• I worked on an ERP created as SPA (single-page application) project for a real estate agency called Auxiliadora Predial.
In this project, we use ASP.NET Core, Dapper, DDD, Angular, and CI/CD.

• I worked in a CRM created as SPA (single-page application) for a bank called Agibank whose goal was to optimize the process of qualification and consumption of leads for the sales team. Developing using ASP.net Core, EF Core, DDD, Microservice Architecture, Angular 4 with Angular Material, and CI/CD.

• I worked in an e-Commerce created as ASP.net MVC for a company called Frigelar. Developing using ASP.NET MVC, DDD, NHibernate, Redis, BDD, and CI.

Also, in all the above projects:
• Developed Unit and Integration Tests to guarantee the expected results.
• Responsible for defining backlog priorities together with Scrum Master and PO.
• Working through an agile culture, doing the ceremonies of Scrum determined by the Scrum Master with the Team.

I've worked in the development of several projects for different segments, including:
Project Management, Tax, Supplier Management, Help Desk, and Ticket, using Windows Forms, ASP.NET WebForms / MVC / WebServices, WebApi, and AngularJS.

Developing new systems according to the needs of the company and improving existing products (Refactoring) and processes (Source Control).

I developed a system of Sales Monitoring Panel (ABC curve) - with Google Maps, where managers can view sales at the points (Lat., Long.) where they occur, using filters to refine the queries, thus delivering practical, visual, and useful sales information for them.

Teaching the technical content of the course Commercial Programming II for the 5th. Semester of the Bachelor's degree in Information Systems, whose course plan was developed under Microsoft.NET technology.

I have developed several custom projects for clients and component libraries, using WindowsForms, ASP.net WebForms, and WebServices.

Development and hosting of institutional sites and modules for DotNetNuke.

I developed a library to digitally sign Electronic Tax Invoices (NF-e) and an EndPoint for communication with NF-e Sefaz WebServices