A defined scope — the pages, fixes, features, or monthly support included.
02
A clear timeline — when work can start and what I need from you.
03
A written price — based on the actual work, with revisions and exclusions stated.
04
Separate third-party costs — such as hosting, domains, and paid tools, normally in accounts you own.
05 / FOR AGENCIES
Your client. Your brand. My development.
For design studios, marketing agencies, and freelancers that need development behind the scenes. You lead the client relationship; I build to an agreed brief. Scope, confidentiality, communication, ownership, and pricing are agreed per project.
03I deliver the agreed development under your brand.
06 / ABOUT
Work directly with me from brief to handover.
I'm Jan Miko Guevarra. I lead the work from scoping through development, testing, and handover. My experience spans websites, mobile products, and the systems behind them.
BS Computer Science · Cor Jesu College, Inc. · Expected 2027
Available for project-based website work and agency collaborations
Explore all 22 reviewed projects: client systems, commissioned work, academic builds, and my own product. Each card identifies my role and technology stack.
08 / EXPERIENCE
What I worked on and where.
Two work contexts, with project roles and details inside each.
Practicum and client systems
JohnV MEDIA
Development and integrationsSelected work
PicklePark and PesoJar were part of my July–August 2026 practicum. Pay247 and NomoQR are shown separately within this work.
Explore this experience
Supervised practicum · Jul–Aug 2026
Full-Stack Software Developer Intern
PicklePark
Sports and facility operations
Built customer booking and Open Play flows, including the queue and player assignment workflows.
Connected payments and customer activity to staff controls for courts, facilities, and reporting.
Worked across the Next.js interface, Supabase/PostgreSQL data layer, integrations, debugging, and release checks.
PesoJar
Local-first personal finance
Built Flutter finance workflows with SQLite so signed-in users can keep working offline.
Implemented account access and synchronization through authenticated Cloudflare Worker APIs and D1.
Worked on Stripe subscription integration, protected administration, and release verification.
Other JohnV MEDIA client systems
Development and integrations
Pay247
Test-mode payment pilot
Implemented OAuth setup and checkout mapping between HighLevel and Xendit.
Handled native Xendit webhooks and concurrent callback processing for order status updates.
Verified the sandbox checkout path through the provider and HighLevel records; this is a test-mode pilot, not a production payment claim.
NomoQR
Restaurant ordering and operations
Worked on account-free table QR ordering and real-time staff operations with Next.js and Supabase.
Implemented backend order and price validation through PostgreSQL functions.
Collaborated with a frontend contributor on the customer and staff experience.
Next.jsFlutterSupabasePostgreSQLPayments
More project experience
Client work & personal projects
Web, mobile and product developmentSelected work
Client systems, my NameAsOne product, and web, mobile, and research projects—each with its own role and context.
Explore this experience
Direct client and commissioned work
Four documented projects
InCloud System
Client inventory and ordering system
Built the full-stack system independently, including a Next.js staff dashboard and Flutter customer app.
Connected inventory and ordering workflows to the supporting application data and integrations.
HealthCardGo
Client healthcare system
Developed appointment and surveillance workflows for a healthcare application.
JobSync
Client hiring system
Developed an AI-assisted job matching and applicant ranking system.
MCI Detection System
Freelance research prototype
Developed a research application connecting MRI processing and model inference to a web dashboard.
NameAsOne
Personal product
NameAsOne
Personal identity platform
Designed and built custom handles, profiles, grouped links, and contact actions.
Worked across the interface, account experience, and supporting data for the product.
Additional projects
13 academic and other builds
UAV Flood Assessment System
Academic · Completed
Flood road passability checker for disaster response.
Fyllens - Plant Health Detection
Academic · Completed
Plant health app for nutrient and disease checks.
A'ezzy Grammar Correction
Academic · Completed
AI grammar and writing correction tool.
Yummify Recipe Finder
Project · Completed
AI-powered recipe discovery combining Gemini AI with Spoonacular API for personalized recommendations and recipe generation.
SnakeBuddy
Project · Completed
AI-powered snake identification using Gemini 1.5 Pro vision with real-time camera capture and offline catalog for Philippines.
Better Bites
Project · Completed
AI dietary choice analyzer scanning ingredient labels with OCR, providing health recommendations based on personal profiles.
Scan My Soil
Project · Completed
AI soil analysis providing agricultural recommendations and insights based on soil composition using Gemini vision.
TalkToHand
Project · Completed
Real-time sign language gesture recognition using MediaPipe, translating gestures into readable text for accessibility.
EnviroSpeak
Project · Completed
AI voice processing app using Gemini that describes surroundings via voice input with voice-to-text and text-to-speech.
Econaga
Project · Completed
Waste management with location tracking allowing users to submit collection requests for efficient waste transportation.
QR Code Attendance System
Project · Completed
QR-based attendance tracking for efficient check-in/check-out management.
SienaTalk
Project · Completed
Student counselor booking platform with messaging, voice recordings, and admin oversight of interactions.
Eatease
Project · Completed
Streamlined food delivery with simplified interface for browsing restaurants and ordering meals.
Web appsMobileAI integrationsProduct design
The practicum dates and each project’s engagement type remain distinct inside the two entries.
09 / CONTACT
Need a new website? Or help with the one you have?
Tell me what you need, what you already have, and where you're stuck. I'll work with you toward a clear scope and practical quote.