Katriel

Experiencia demostrada en C#.

Experiencia demostrada en SQL (T-SQL).

Experiencia demostrada en JavaScript.

Experiencia demostrada en Java.

Experiencia demostrada en C++.

Owned the end-to-end automation of the institutional visitor control system, replacing a paper-based check-in with digital visitor registration, tracking, auditing and identity verification — reducing processing time from 5–10 minutes to under 1 minute per visitor; live in production for 2+ months.. Optimized SQL Server queries and stored procedures behind the visitor system, cutting response times by ~10 seconds and keeping lookups fast as the visitor log grew.. Build and consume RESTful APIs with Entity Framework to expose institutional data to internal applications, applying layered architecture and reusable service patterns.. Develop and maintain backend components of internal institutional systems in C#, .NET and SQL Server, participating in the full SDLC from requirements analysis through deployment.. Work in an Agile/Scrum team using Azure DevOps for sprint planning, version control and code review, coordinating directly with analysts and end users to validate requirements.

Maintained and validated national education databases holding over 20 years of student certification and high-school diploma (bachillerato) records, enforcing data-integrity and confidentiality standards across legacy data.. Produced recurring technical and statistical reports from SQL queries, delivering the data used by department leadership for operational decisions.. Contributed to improvement projects on internal information systems, documenting processes and identifying data-quality issues that reduced manual reconciliation work.