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OwLlama
MobileIndependent Project / Mobile Application & Local Al Integrator
A mobile application that enables users to run local AI directly on their devices completely offline.
FlutterDartHugging FaceGGUF+1 more
> Hello world, my name is
Ray Vincent DS. Concepcion
Full-Stack Engineer bridging frontend, backend, and AI integrations.
View My Work01.
About Me
My work focuses on designing reliable APIs, optimizing database performance, and bridging the gap between robust backend architectures and dynamic frontend interfaces to support real-world, production-level applications.
I have experience delivering full-stack custom CMS platforms, interactive real-time dashboards, and AI-driven automation workflows, maintaining a strong emphasis on code quality, security best practices, and overall system maintainability.
Outside of active development, I continuously explore emerging technologies—including practical AI integrations and LLMs—to refine my engineering workflows and contribute to projects that strengthen my understanding of scalable, secure, and user-centric system design.
Currently working on:Software Engineering projects
Learning:Advanced AI concepts and expanding my development toolkit
Contact:concepcionrayvincent@gmail.com
02.
Skills & Expertise
Backend & Databases
PHPMySQLFirebaseMongoDBRESTful API DesignRBAC
Web Development
JavaScriptPythonReactNext.jsNode.jsRESTful API Integration
Mobile & Desktop Development
FlutterDartReact NativeTauri
Tools & Workflows
GitDockerLinuxPostmann8n
Cybersecurity & Networking
Burp SuiteWiresharkGhidraNetwork AnalysisSecurity Auditing
03.
Experience
Backend Engineer
June 2025 – January 2026Western Mindanao State University · Hybrid
Engineered secure backend systems and RESTful APIs for university-wide deployments.
- Engineered a secure PHP-based CMS and RESTful APIs, implementing Role-Based Access Control (RBAC) and robust database architectures to mitigate SQL injection vulnerabilities.
- Managed full-cycle deployment, hosting, and version control while optimizing live backend performance to ensure long-term system scalability and reliability.
PHPMySQLRESTful APIRBACDocker
Backend Engineer
September 2024 – May 2025Western Mindanao State University · Hybrid
Built real-time ordering APIs and vendor dashboards within an agile team.
- Developed PHP/MySQL APIs for real-time ordering systems and vendor dashboards, collaborating within a 5-person agile team to deliver an MVP on schedule.
- Maintained hosting infrastructure to guarantee 24/7 uptime during critical rollouts, integrating security features and refining overall backend performance.
PHPMySQLRESTful APIAgile
04.
Projects
FeaturedUW
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University (WMSU) Custom CMS
WebProfessional Experience / Backend Engineer
A secure PHP-based CMS and RESTful API architecture built for scalable, university-wide deployment.
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TryCatchUp
WebAI Automation & Content Syndication Engine
An autonomous, AI-driven technical publication pipeline that scans, writes, and syndicates tech articles.
n8nNext.js 16Sanity CMSOpenRouter API+3 more
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Sustancia (FlutterFlow HackFest)
MobileHackathon Project / Mobile Application
An app built in 24 hours that promotes healthier eating habits by analyzing meal proportions via photos.
FlutterFlowMobileHealthTechAI
CV
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CVRankify
WebFull Stack Web Application / AI Integration
Automated, AI-driven resume screening system tailored for remote technical hiring.
Pythonpypdfium2LLMOllama+1 more
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Food Park Management System
WebAcademic Project / Backend Engineer
A backend system featuring real-time ordering and vendor dashboards.
WM
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WMSU Marketplace
WebCollaboration / Web Application
An online marketplace platform developed for the university community.
PHPMySQLWeb
RM
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Resort Management System
WebCollaboration / Web Application
A comprehensive management system for resort operations and bookings.
PHPMySQLWeb
SC
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Spicetify Custom Theme
OtherOpen Source Contribution / UI Theme
A custom theme and UI snippets contribution for Spotify via Spicetify.
CSSUI/UXSpicetify
WM
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WMSU COR to Schedule (Script)
OtherIndependent Project / Scripting
A custom script that parses university COR documents into structured schedules.
PythonScriptingAutomation
OW
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OwWMSU (COR to Schedule App)
MobileIndependent Project / Mobile Application
A cross-platform mobile application built with Tauri that converts university COR into structured schedules.
TauriRustTypeScriptMobile
ML
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MLBB Predictor
WebIndependent Project / Data Analysis
A tool designed to predict outcomes and analyze data for Mobile Legends: Bang Bang.
PythonData AnalysisMachine Learning
MP
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Minecraft Plugins Collection
OtherIndependent Project / Game Modding
A collection of custom quality-of-life and utility plugins for Minecraft servers.
JavaSpigot APIMinecraft
PG
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PromptGPT
WebIndependent Project / Web Application
A TypeScript-based project for managing and interacting with GPT prompts.
TypeScriptReactLLM
OG
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Owmegle Ecosystem
WebIndependent Project / Full-Stack & Bot
A full-stack real-time chat platform integrated with a Telegram bot.
Node.jsReactWebSocketsTelegram API
AM
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Automated Movie Post Workflow
OtherIndependent Project / AI & Automation
A fully automated n8n workflow that picks a movie, enriches it with AI, generates an image, and posts it to Facebook.
n8nAIAutomationFacebook API+1 more
05.
Research
Undergraduate Thesis
CVRankify: Automating Pre-Interview Resume Screening for Remote Software Engineers with Generative Pre-Trained Model
Western Mindanao State University - College of Computing Studies · 2022-2026
A web-based application integrating a locally hosted generative pre-trained transformer to contextually parse and evaluate PDF resumes for remote software engineering recruitment.
- Addressed the bottleneck in remote software engineering recruitment caused by rigid keyword matching in traditional applicant tracking systems (ATS).
- Developed a web-based application that integrates a locally hosted generative pre-trained transformer model (Qwen3:8b) via the Ollama framework to parse and evaluate PDF resumes contextually.
- Evaluated resumes against four customizable, weighted criteria: skills, experience, education, and time-zone compatibility.
- Achieved a high degree of agreement (Kendall’s W=0.9569) between the AI rankings and expert human judgment, effectively mitigating common human recruiter biases.
- Optimized local inference to process 100 ATS-standard resumes at an average of 20 seconds per applicant using an NVIDIA RTX 3070 GPU.
Qwen3:8bOllamapypdfium2PythonLLMNVIDIA RTX 3070
06.
Awards & Achievements
picoCTF 2026
2026Top 316 of 8,747 Teams
Individual Score: 6,350
Hack The Box University CTF 2025
2025Ranked 161st of 1,014 Teams (Top 15% Global)
Hack4Gov 2024 & 2025
2024 & 20252x National Finalist (Top 5 in '25) & Regional Champion (Region IX/BaSulTa)
ASEAN Open CTF 2025
2025Top 7 in the Philippines; Top 70 Overall (of 948)
FlutterFlow HackFest 2024
2024Champion - Sustancia (AI Nutrition App)
WMSU CCS Fest - Tech Sprint 2024
2024Champion
07.
Certificates & Credentials
08.
Speaking & Leadership
Build with AI Zamboanga 2026 — "Hack to Win" Panel
June 2026Panelist · Google Developers Group (GDG) Zamboanga
Taking initiative, learning through execution, and rapidly developing AI applications during high-stakes environments.
"Ethical Unethical Hacking" Talk
March 2026Speaker · WMSU Devcore Circle
Identifying session vulnerabilities using a custom browser extension and effectively securing systems.
"The De-Vibing" Lab Workshop
March 2026Speaker · WMSU ZERO TRUST FUND KIDS
Teaching students how to effectively secure "vibe-coded" codebases.
CTF Basics & Actionable Hacking Tips
February 2026Speaker · UE League of Information Technology Students
Teaching CTF basics and actionable hacking tips.
Research & Development Lead
January 2026 - June 2026Lead · Google Developer Groups on Campus WMSU
Intro to Cybersecurity Seminar
2025Speaker · GDGoC WMSU InfoSession 2025
Intro to Cybersecurity seminar featuring live exploit demonstrations in Web Security, Steganography, and OSINT.
09.
Education
Bachelor of Science in Computer Science
2022 – 2026Western Mindanao State University
Computer Science
10.
Get In Touch
Have a question or an opportunity? Send me a message and I’ll get back to you.