Ray Vincent DS. Concepcion

Independent Project / Mobile Application & Local Al Integrator

A mobile application that enables users to run local AI directly on their devices completely offline.

• Runs local AI directly on the device natively.
• Designed a built-in model hub, allowing users to seamlessly browse and download GGUF models.
• Enables users to download models directly from the app via Hugging Face for offline use.

Professional Experience / Backend Engineer

A secure PHP-based CMS and RESTful API architecture built for scalable, university-wide deployment.

• Engineered a secure PHP-based CMS and RESTful APIs.
• Implemented Role-Based Access Control (RBAC) and robust database architectures to mitigate SQL injection vulnerabilities.
• Managed full-cycle deployment, hosting, and version control.
• Optimized live backend performance to ensure long-term system scalability and reliability.
• Maintained 24/7 uptime for university-wide deployments.

Full Stack Web Application / AI Integration

Automated, AI-driven resume screening system tailored for remote technical hiring.

• Built an automated, AI-driven resume screening system tailored for remote technical hiring.
• Integrated PDF text extraction utilizing the pypdfium2 library and orchestrated local LLM prompts to parse unstructured text into standardized JSON schemas.

Academic Project / Backend Engineer

A backend system featuring real-time ordering and vendor dashboards.

• Engineered PHP/MySQL APIs for real-time ordering systems and vendor dashboards.
• Collaborated within a 5-person agile team to deliver a minimum viable product (MVP) on schedule.
• Maintained hosting infrastructure to guarantee 24/7 uptime during critical rollouts.
• Integrated security features and refined overall backend performance.