As a Senior Back-End Software Developer in the Fraud Prevention team, I specialize in creating robust and scalable solutions that enhance both security and efficiency. Currently, my squad and I are developing a cutting-edge biometric processing middleware built with .NET 8, MongoDB, and AWS cloud services. This essential solution empowers our company to avoid dependence on a single biometric provider by integrating multiple options with built-in fault tolerance and a circuit breaker that automatically switches providers if one goes down.Additionally, my work has driven significant cost savings by enabling the use of simpler biometric analysis whenever possible, which can be ten times more cost-effective than the previously implemented option. This middleware is fully configurable through internal APIs, allowing for seamless integration and adaptability across different use cases.Throughout this project, I've been deeply involved from the outset, including the architectural phase, collaborating closely with our head architect and tech lead to shape a solution that not only meets current needs but also scales for future demands. My role is pivotal in ensuring that our systems are both resilient and cost-efficient, directly contributing to the overall security and reliability of our fraud prevention efforts.

As a Consultant at Vortigo, I worked for 9 months on a critical project for our client, DM, focusing on the development of a biometric processing middleware. My role involved creating scalable and reliable back-end solutions using .NET 8, MongoDB, and AWS cloud services. Throughout this period, I was responsible for implementing key features such as fault tolerance and a circuit breaker mechanism that ensures seamless provider switching in case of downtime.My work on this project was not only technically sound but also demonstrated strong soft skills, which led to a great cultural fit with the client. As a result, DM recognized my contributions and offered me an internal position to continue as one of the main senior developers on the team. This transition from consultant to internal employee reflects the high level of trust and value I brought to the team, ensuring that the project continues to thrive with my involvement.

As a squad leader I am responsible for leading a development squad, participating in technical discussions with the other squad leaders, estimating effort for new projects, writing rollout documentation, understanding, creating and managing tasks in Jira, planning sprints and presenting results to clients.

As a developer I take part in the development cycle of transport-focused applications both internal and third-party integrations, from planning to deployment using the following technologies:• Front-end: Single Page Application with Angular and Angular Material;• Back-end: REST APIs in Docker, Web APIs in IIS and Windows Forms Application in Citrix with ASP.NET, .NET Core and C# with unit tests using xUnit and Moq;• Database: DDL and DML with Oracle and PostgreSQL;• NoSQL: MongoDB for application logging;• Architecture: Microservices with RabbitMQ;• CI/CD: Jenkins for build and image promotion, Docker and Kubernets on Rancher for containerization, Git and Bitbucket for versioning;• Documentation: Swagger for APIs and Confluence;• Agile: Scrum and Jira.

• Maintaining a credit card and payment processing system using PL/SQL and Oracle Database.• Parameterization of the system working in an international team.• Scrum methodology using Jira.

• Full stack project development in fleet management system andmanagement system using C# and Entity Framework on the backend and Blazor with jQuery, CSS and JavaScript on the frontend.• Legacy system support using Visual Basic.• DDL and DML in MS SQL Server.• Code reviews on Github.• Git and Asana for code and project management.

• Maintenance using Java, Spring Security, JSP, JavaScript, jQuery and CSS in a major Loyalty Program application built in SAP Commerce Platform (Hybris).• Analysis and development of an internal knowledge sharing and communication application using Node.js, React and MySql.• Analysis of technical specification requirements for commercial proposals.

• Front-end development consuming Rest APIs using HTML, JavaScript, jQuery and Bootstrap.• Data troubleshooting in Firebird Sql database.• Point of sales application maintenance with Delphi 7 and Firebird Sql.• Usability, interface and functionality tests.• Technical support II.

• Usability and functionality tests in Point of sales application and hardware.• Homologation of Electronic funds transfer integration.• Help desk support.• User support.