Mathias Jave Diaz
Junior Software Engineer
I'm Mathias Jave Diaz
SOFTWARE ENGINEER STUDENT - UPC
My projects
ScamShield — Scam Estimation in Digital Purchases
Web application with Machine Learning (Random Forest) and NLP (DistilBERT fine-tuning) to mitigate fraud risk in digital transactions, specifically trained for the Peruvian context.
Invoice Validation and Control
Invoice validation and control system for an inspection body with ISO 17020 accreditation, featuring state management and consumption charts.
Report Validation
Certificate of conformity validation system for an ISO 17020 accredited body, with customer management features.
Event Space Rental App
Platform with reservation management, payment integration, and a review system. Robust architecture focused on business scalability.
Vivlo
Artificial Intelligence assistant focused on accompanying and caring for patients with diabetes, using foundational cloud models.
EcoGuardian
IoT solution for agricultural monitoring with real-time alerts, personalized recommendations, and a distributed architecture.
My experience
- 02/2025 - Present
Software Developer Intern
ITSIGHT CONSULTING (Client: Western Union)
- Developed, migrated, and maintained 4 web applications using C#, ASP.NET Core, React, and SQL Server.
- Integrated 2 payment gateways (Ligo and PaymentHub) via RESTful APIs and a middleware connected to PagoEfectivo.
- Secured access to 4 applications and their APIs using JWT, OKTA, and CyberArk.
- Configured logging monitoring for 4 applications to detect and diagnose errors before production.
- Integrated Role-Based Access Control (RBAC) in 2 applications.
- Fixed 20-30 application vulnerabilities detected by Checkmarx under OWASP Top 10 standards.
- Reduced average transfer time to 1 minute per operation.
- Successfully migrated 8 modules in the accounting and tax areas.
- 07/2024 - 01/2025
FullStack Developer
HiperFast SAC
- Developed and maintained 2 web systems (ISO 17020 certificate validation and invoice control) implementing a layered architecture in C#, .NET Core, and Vue.js.
- Optimized SQL queries in MySQL, improving efficiency.
- Containerized both systems with Docker and configured a dedicated server in production.
- Evaluated technical risks and proposed security solutions.