Julio Lopez Mendez

Full Stack Developer with 5+ years of experience building scalable enterprise applications using Java (8–17), Spring Boot, Angular, and React. Strong background in backend development, including batch data processing, system integration, and secure architectures. Experienced in designing ERP-like systems and implementing high-volume data pipelines using Spring Batch to automate complex workflows.

Proven ability to improve system performance, reduce manual processes, and deliver reliable solutions in enterprise environments.

Full Stack Developer at O'Reilly Auto (2023-02 – Present)

Full Stack Developer at O'Reilly Auto working on enterprise-level ERP systems and batch processing solutions.

• Designed and developed a scalable ERP-like purchasing system using Java 17 and Angular 18, supporting internal procurement operations
• Implemented secure authentication using Azure AD (SSO) and enforced Role-Based Access Control (RBAC)
• Led code reviews and enforced coding standards using Bitbucket
• Managed environment configuration and deployments across Development, QA, and Production environments
• Developed batch processing pipelines using Spring Batch to automate ingestion of purchase orders from external servers
• Retrieved compressed (ZIP) files and processed high-volume .txt files containing thousands of records
• Transformed and normalized complex data structures into relational models and persisted data into on-premise databases
• Automated end-to-end data processing, reducing manual effort and significantly decreasing error rates
• Optimized processing workflows to efficiently handle large-scale purchase data

Full Stack Developer at Hexaware (2022-05 – 2022-12)

Developed RESTful APIs and responsive user interfaces for e-commerce shopping cart functionality.

• Developed RESTful APIs for shopping cart functionality using Spring Boot and MongoDB
• Integrated Cloudinary for media storage and management
• Built responsive user interfaces using Angular 11 for cart and product management

Full Stack Developer at Tata Consultancy Services (2021-05 – 2022-05)

Developed modules and REST endpoints for internal banking systems with focus on performance optimization.

• Developed new modules and REST endpoints for internal banking systems using Java 8 and AngularJS
• Improved backend performance by optimizing MVC architecture and request handling

Bachelor's degree in Systems Engineering (2011 – 2015)