Aaron Mendez, Backend Developer in Costa Rica specialized in Java and Spring Boot

Aaron Mendez

Full Stack Engineer & Data | React + TypeScript · Java (Spring Boot)

About Me

Final year Business Informatics student with strong technical focus in backend development and hands-on experience in Linux environments. Skilled in Java, Python, JavaScript and bash scripting. Seeking a challenging role in an innovative company to contribute to impactful open source projects and deepen expertise in distributed systems and cloud technologies.

I have solid knowledge in database design, SQL, concurrency, security, and performance evaluation. I'm passionate about software engineering, clean coding practices, and efficient system architecture.

Education

B.Sc in Computer Science – Focus on Business Systems

University of Costa Rica

2021 - Present (Last-Year)

Relevant coursework: OOP, Software Architecture, Computer Architecture, Software engineering, Data Structures and Algorithms, Databases, Application Development.

Professional Electronics Technician

Colegio Técnico Profesional de Calle Zamora

2015 - 2020

PROJECTS

Here you will find some of the personal and clients projects that I created with each project containing its own case study

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Mock Endpoint

.NET
Bootstrap
SQL
SQL
SQL

APISandbox is an enterprise-oriented API simulation and governance platform built to model distributed service environments. It provides dynamic endpoint orchestration, policy-driven authorization, audit traceability, and scalable request processing. The system emphasizes observability, fault tolerance, and security hardening, enabling realistic testing of authentication flows, access control logic, and integration pipelines.

See Code
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GESTHUM – Internal Job Application Management System

.NET
Bootstrap
SQL
Gemmini

A web-based platform designed for managing internal job competitions within HR departments. GESTHUM allows employees to apply for vacancies by creating customized CVs, which are evaluated by an AI agent using advanced language models. The system provides recommendations, displays final evaluations, and ensures a transparent selection process. Built with Java (Spring Boot) for the backend, React with Material UI for the frontend, and Oracle DB for data management, with secure authentication via JWT.

See Code
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Enterprise Application Security System (24/7)

.NET
Bootstrap
SQL
SQL

Enterprise-grade centralized access control platform featuring hierarchical RBAC, dynamic policy evaluation engine, rule-based authorization, distributed audit logging, secure backup and replication strategies, and performance-optimized architecture focused on security, scalability, and high availability.

See Code

Professional Experience

Data Automation

University of Costa Rica

Agust 2025 - Present

Developed automated reporting workflows using Python, reducing manual effort by 90%. Implemented structured data validation processes to enhance reporting accuracy, and processed and transformed raw datasets into reliable, structured outputs to support data-driven decision-making.

Operations Manager

The Hills Outlet

November 2023 - June 2024

Managed inventory, supervised daily operations, and led strategic planning for process improvement.

Industrial Electronics Technician

Techcomm Wireless

June 2021 - November 2021

Diagnosed electronic circuits, conducted tests on digital and analog systems, and worked with microcontrollers.

Contact Me