Hi, I’m Esteban.

Build Java 17 and Spring Boot services for a production Student Information System covering enrollment, grades, identity, reporting, and administration.

• Introduced historical and time-scoped data models, migrated legacy relationships, and corrected records that produced inaccurate certificates and enrollment states.
• Improved identity reliability with Keycloak provisioning retries, account reconciliation, and deterministic identity matching.
• Reworked evaluation-assignment generation using bulk retrieval, deduplication, batching, indexes, and transactional safeguards to eliminate N+1-style access patterns.
• Diagnose production incidents across logs, database state, request flows, code, and deployed configuration; deliver releases through Jenkins.
• Assign tasks, review pull requests, and guide delivery for up to three junior developers.

Owned the lifecycle of an institutional document-management platform from requirements and relational modeling through implementation, deployment, and support.

• Built the application with Laravel and MySQL, including administrator provisioning, RBAC, departmental access, uploads, and document version history.
• Configured Apache as a reverse proxy in a legacy PHP/MySQL environment; the application remains in use and received follow-up support in 2026.

Owned requirements, architecture, documentation, data modeling, backend, frontend, auditing, surveys, reports, and testing for a production university system.

• Built the system with Laravel, Next.js, and MySQL, with RBAC and auditing.
• Dockerized and deployed it to university-owned physical servers, moved MySQL to the host, and introduced backups after identifying container-volume data-loss risk.