Leandro Neumann Email & Phone Number

Langley, Bc, Ca

Vancouver, British Columbia, Canada

São Paulo, São Paulo, Brazil

At Concrete Solutions, I had the opportunity to participate in several projects, always working with agile methods.In the project I'm currently in, I have had the opportunity to implement several cool things: As lead developer, I helped with the architecture decisions, TDD and pair programming adoption, DDD to tackle the business complexity.Migration of a product to a cloud-native solution using:.Net core 3.1 and 5.0, Microservices, Kubernetes(AKS), Azure Storage, Postgres (write side), MongoDB (query side), Kafka (using Events Hub and Kafka on AKS with Strimzi), Azure AD, Oauth2.Applying in the entire product the evolutionary architecture principles. Hexagonal architecture in the solution, separating the concerns with CQRS and BDD (Specflow) for acceptance tests.As we have a legacy monolith to deal with, we had the challenge to keep running both applications while we migrate features. We solved this situation by adopting a strategy of strangling the monolith, migrating feature by feature, and an API Gateway orchestrates the redirection rules.Completed projectsI helped build a global account solution for a Fintech company, using Kotlin as the main language and Microservices, TDD and Pair Programming, as well as SOLID and Code Review, DDD and Design Patterns best practices, when applicable, in the solution design.Member of the team that built the BFF Microservices of the App of a big retailer in Brazil, using .net core 2, Polly, Nlog, Redis, Refit.The big challenge in this project was to integrate with the client's legacy APIs, where they returned large payloads. The API we built had the main mission to receive the APP requests, access the several legacy API's and return only what was necessary for the App.We helped in the migration of the legacy POS system of a large fast-food chain to the .NET platform using the best practices of Clean Code, Design Patterns, SOLID. The challenge was reading the legacy code in Javascript and translating it for C#.

As a consultant for a toll payment company, I was part of the client's support team and later, the new projects team. During my time there I helped in the creation of production system monitors, the resolution of critical bugs and the creation of new features. The most relevant feature I did was the implementation of a product called Road Toll Voucher, which is used by companies with large fleets. The solution was developed using the following technologies: .NET framework 4.6 and C#, NHibernate and SQL Server, MVC, Javascript, Jquery, KnockOut.js, Windows Services, SOAP web services and WCF.

Providing services for Itau BBA bank. Leading the team that carries out the evolution of the Backoffice systems. The solution was developed using the following technologies: VB.Net, C #, .NET Framework 1.1 / 2.0 / 3.5 / 4 , WCF, WebForms, Ajax Toolkit, Jquery, Linq.

São Paulo, Brazil

Providing services of business analysis using UML and handling outsourced development, dealing mostly with Code Reviews and the deployment life cycle for Itau BBA bank.The solution was developed using the following technologies: VB.net, C # .NET Framework 1.1 / 2.0 / 3.5 / 4, WCF, WebForms, Ajax Toolkit, Jquery, Linq, Business sector: Analysis, development, maintenance of Financial systems.

Analysis and development of systems for the financial market, including Vehicle Finance, Personal Credit, Construction Materials, using J2EE, Struts, EJB, DWR, JSTL, javascript and Sybase database.

ERP System End User Support (developed internally with the technologies: Oracle Portal, Oracle Forms and Oracle Reports and Oracle Database 10g).