Julian Santiago Villalon Cardenas

Julian Santiago Villalon Cardenas

Junior Full Stack Developer

Queretaro, Mexico

#OpenToWork

About

Software Developer with 2 years of experience in NestJS, Next.js, Angular, and PostgreSQL. I unified TMS, ERP, and IMS systems for logistics operations, standardized the UI for institutional systems, and provided network support for an ISP.

Experience

Transportes Rendon

Full Stack Developer

Feb 2026 – Aug 2026

• I designed and developed a monolithic platform (TMS, ERP, and IMS) using Next.js, NestJS, and PostgreSQL on a Linux VPS, employing an API-first and spec-driven development approach; I consolidated operational workflows by replacing Excel and WhatsApp records, reducing manual data entry time from 6 to 2 hours per week and cutting errors by 50%.

Next.jsNestJSPostgreSQL

Transportes Rendon

System Analyst

Sep 2025 – Dec 2025

• I designed and implemented reusable components using Angular and TailwindCSS for institutional systems, standardizing the visual interface, reducing code duplication by 40%, and cutting the delivery time for new interfaces from three days to one.

AngularTailwindCSSReusable components

State Attorney General of Querétaro

Maintenance Technician & Help Desk

Jun 2024 – Jun 2025

• I managed technical support and network issue resolution for internal and external clients, resolving an average of 20 tickets per week while maintaining 95% SLA compliance and performing preventive and corrective infrastructure maintenance.

Network supportTechnical support

GYBO (ISP & IT Solutions)

Education

Polytechnic University of Querétaro

Computer Systems Engineering

2023

Certifications

Linux Essentials

Cisco

Network Technician

Cisco

B2 English

EF SET

Design Thinking

University of Notre Dame

Skills

LinuxAPI Test/HoppscotchDocker/PodmanGit/GitHubREST APIsSQLitePostgreSQLFastAPINestJSHTML/CSSTailwindCSSShadcn/uiNext.jsAngularReactPHPC++SQLTypeScript/JavaScriptPython

Languages

English (Professional working proficiency)Spanish (Native or bilingual proficiency)