Cristian Vargas Email and Phone Number

Since January 2023, I have been leading a team of developers and QA on a completely new project. Previously, I participated as a Subject Matter Expert (SME), analyzing and researching the project requirements and collaborating with the company architect to design the architecture for the new initiative. Our team focuses on the backend, creating approximately six independent microservices, each built using a hexagonal architecture approach.We started with .NET 6, which we used for over a year, and in 2024, we upgraded to .NET 8 across all solutions. The team implemented a custom security solution for the project and is also responsible for delivering most of the data to the frontend. The technologies and practices utilized throughout the project include .NET 6, .NET 8, Entity Framework, SOLID principles, dependency injection, Sentry, Swagger, Jenkins, SonarQube, SQL, Dapper, JetBrains Rider, JetBrains dotTrace, and JetBrains dotMemory.In addition to my role as a technical leader, I significantly contribute as an SME, assisting the product owner in understanding and prioritizing project requirements. Our team has delivered excellent results, with most endpoints responding in under one second, which is outstanding.

October 2019 – August 2020As outsourcing for the client Firefighters of Costa Rica, in the SIMAV system, the system in charge of vehicle operations, fines and different aspects handled by the fire department.Technologies used: IIS Express, MVC 3, C #, Sql server 2016, Team Foundation Services, TortoiseSubVersion, Reporting Services.

Different systems of the company:Capella: Involving Watson's Cognitive technology, Capella is the solution for managing and monitoring a company's communication channels. It has a virtual assistant for communication by chat and also monitors the interaction of its clients with their social networks (Facebook, twitter).Nebula: Virtual assistant for the early detection of money laundering and terrorist financing, for this information is captured from different digital media such as newspapers on the internet, blacklists and social networks. Additionally, the names of the people involved are extracted and a database is formed with the possible suspects and it is linked to the current clients that have a bank and their respective transactions. With this input, the system can determine if it is under a possible case of L.A.F.T. and sends an alert to system users.Technologies used: Visual Basic .Net, SQL Server, Transact SQL, HTML, WCF, Angularjs, HTML 5, Boostrap, CCS3, ASP.Net Core, Entity Framework, NodeJS, GitHub, Bitbucket, Facebook's APIs, Twitter and IBM Watson, NodeJS.January 2017 – October 2019As outsourcing for the BCCR client, working for a team of economic platform improvements, where improvements are made in different systems, among these the following are mentioned:• Statistics Service of Private Construction.• External Sector Statistics.• Economic Indicators Management Service.• Economic Information Service for Companies.• Import, Export and Declarations Service.• Economic Data Disclosure System.• Information Link Service.Technologies used: Visual Basic .Net, C #, SQL Server, PL / SQL, HTML5, CCS, JQuery, Framework 4.0, Framework 4.5, JavaScript, ASMX, TDD, Power BI, Team Foundation Services.

May 2015 – May 2016 Web, Apps and Desktop DeveloperDevelopment of an information system for a gym, the objective was to automate the treatment of a trainer with the client. It was thought big so the software was made to encompass the entire staff of a gym, gym manager, customer service, trainers, clients.Besides, the car rental system was developed for a company that provides transportation services to the whole country, the main objective was to reserve vehicles for customers.It also participated in systems that were already in use, only it was given some updates to improve it. These updates involved querying data with certain search filters.Technologies used: C #, SQL Server, HTML5, CCS, JQuery, Framework 4.0, JavaScript.