Erl Teodemar D. Sofer
Mobile & Full-Stack Developer — Edge AI, Flutter, Deployed Systems
I build things that ship and keep running without me: an offline cacao-disease detector farmers use in the field, a records system a provincial health office runs today, attendance bots professors still rely on. BS Computer Science, Intelligent Systems, Laguna State Polytechnic University — Sta. Cruz, 2026.
Undergraduate Thesis
CAPE — Cacao Application for Pod Evaluation
Edge AI mobile app, architected and solely developed end-to-end
Cacao farmers lose crop to pod disease they often can't identify in time, and field sites rarely have reliable signal. CAPE puts detection in their pocket instead of on a server: a custom YOLOv11s model, exported to ONNX, running real-time inference entirely on-device.
I built the full stack myself, frontend and backend. When it came time to validate the model against real cacao expertise, I reached out to DOST-PCAARRD for a referral to people who actually know cacao disease. That led to CFAN, the Cacao Farmers Association of Nagcarlan — I brought the finished app to their experts and members for hands-on field testing against real pods in real light, not clean training photos.
At a glance
- ModelYOLOv11s (ONNX), custom-trained for cacao pod disease
- InferenceFully offline, real-time, on-device
- Referred byDOST-PCAARRD, to cacao disease experts
- Validated withCFAN — Cacao Farmers Association of Nagcarlan
- RoleSole architect and developer, full stack
Screenshots
Showcase
CAPE gets the most room here — it's the flagship build.
images/cape-app-1.jpgCAPE — Detection Screen
On-device YOLOv11s (ONNX) inference identifying cacao pod disease in real time.
View repo →
images/cape-app-2.jpgCAPE — Results & Diagnosis
Per-pod disease breakdown, generated entirely offline in the field.
View repo →
images/cape-app-3.jpgCAPE — Field Testing with CFAN
Validated on real pods with the Cacao Farmers Association of Nagcarlan.
View repo →
images/rrj-dashboard.jpgRR&J Dashboard
Client records, scheduling, and activity logs for a repair business.
images/laguna-pho.jpgLaguna PHO MAIP
Modernized UI/UX plus a chatbot assistant for a provincial health office.
View repo →
images/studentsuite.jpg
images/edu-game.jpgEducational Game
Gamified learning app built for Bagumbayan Elementary School students.
images/ipynb-site.jpgipynb_site
Personal site that statically fetches .ipynb files from a repo folder and renders them in-browser via nbviewer iframes — no manual conversion step.
Visit site → View repo →Deployed & In Active Use
Systems Matrix
Filtered by who each system was actually built for.
Desktop tool that digitizes day-to-day operations for the business: client records, appointment scheduling, and automated activity logs, all through a local database.
Modernized the platform's UI/UX and shipped an automated chatbot assistant plus a system-wide dark mode toggle for provincial health office staff.
View repo →
Designed and delivered a gamified learning application built for elementary-age students.
Automated attendance logging and administrative record exports, deployed across multiple professors' Discord servers for ongoing faculty use.
View repo →
Designed and delivered a gamified learning application built for elementary-age students.
Statically fetches .ipynb notebook files from a specific folder in the repo and renders them directly in-browser via nbviewer iframes, no manual conversion step.
Visit site → View repo →
Automation scripts integrating third-party APIs across gaming, version control, and communication platforms.
Experience
DepEd SDO Laguna Internship
Mar – Jun 2026Systems Development
Systems Development
- Built Inventra, an internal asset management application, from the ground up
- Assisted development of ICTHelpDesk and TRACKit, two internal systems
Administrative
- Processed and organized existing office documents and records
- Created new administrative documents to support office workflows
Technical
- Performed basic IT hardware maintenance on existing office units
- Built and set up newly procured PCs from scratch for office use
Certifications
Cisco Certified Support Technician — Cybersecurity
Certificate on file, viewable below
Skills
Languages & Frameworks
Styling & Data
Tools
Office & Productivity
Leadership
Sports Committee Lead
Student Organization of the College of Computer Studies · 2022
- Orchestrated the complete lifecycle of a major sports tournament, from pre-event planning through post-event settlement
- Secured funding and sponsorships by negotiating directly with local government officials
- Managed rule enforcement, legal compliance, and technical logistics for the event