Ivan Segura Araujo

Tech Stack: .NET 8 (Backend), React, Next.js (Frontend), PostgreSQL, Azure, Docker.

• Designed and developed a multi-tenant inventory and billing system, handling stock, categories, users, roles, permissions, and reporting.
• Implemented JWT-based authentication and role-based access control (RBAC) for secure user management.
• Created a generic filtering and pagination API with dynamic sorting and search capabilities.
• Developed an inventory movement system to track stock transactions across multiple invoices.
• Integrated React Query for optimized front-end data fetching and caching.
• Designed and deployed the system using Azure and Docker for scalability and cloud compatibility.
• Implemented a discount authorization feature, allowing administrators to approve special pricing for sales representatives.
• Utilized Zod for form validation, ensuring robust and error-free front-end input handling.
• Managed barcode scanner compatibility for streamlined product entry and stock updates.
• Built customer and invoice management modules, enabling full sales cycle tracking.

Here is the link: https://ebmapp.vercel.app/

User: admin

Password: admin

• Working as a Backend Developer specializing in .NET, with responsibilities including debugging and resolving issues in both legacy and modern versions of .NET applications.
• Additionally, I contributed to the migration from Bing Maps to Azure Maps, enhancing the system's mapping capabilities and aligning with modern cloud solutions.
• Worked closely with systems analysts, engineers and programmers to understand limitations, develop capabilities and resolve software problems.
• Performed troubleshooting of post-release software faults to support live service and installed software patch design.
• Resolved production issues reported by end users in a timely manner.

• Promoted to team lead in a payroll system project, gaining experience in team management, task assignment, client collaboration, system integration with Dynamics and SAP, web services, server management, and time estimation.
• Led the migration of the system to .NET 8 and Next.js, transforming it into a multi-tenant, cloud-based solution (Azure).
• Implemented microservices, an API gateway, and modularized the database using SQL Server.
• Utilized Docker and Kubernetes for deployment.

• Worked on a payroll system for a company with over 3,000 employees, developing the API using C#, ASP.NET, Entity Framework, Fluent Validation, Dependency Injection, and RESTful principles
• The frontend was built with .NET Core, JavaScript, jQuery, Kendo UI, and MVC
• One of the most challenging tasks was designing a comprehensive attendance module to manage overtime, lateness, absences, and schedule rotations
• This required accounting for various employee scenarios, such as permits, licenses, vacations, substitutions, holidays, and day-offs