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Enzo Monzon

Open to internships & collaborations

Enzo Monzon

Portrait of Enzo Monzon
Available: Open to internships & collaborations
Terminal introduction
enzo@developer:~$ whoami
Enzo Monzon
Software Developer
Computer Science @ PLM
enzo@developer:~$ cat focus.yml
focus:
- full-stack development
- system design
- databases
- software engineering

Software Developer, Computer Science @ PLM

Building practical software through full-stack development, thoughtful system design, and technology-driven problem solving.

Computer Science student at Pamantasan ng Lungsod ng Maynila.

View ProjectsEmailLinkedIn (opens in a new tab)GitHub (opens in a new tab)

Computer Science Student,Full-Stack Development,Technology

01Selected work

Practical software, from schema to screen.

Four projects across internal tools, database design, mobile and e-commerce. Each one marks what's built and what's still planned.

Key

  • Built
  • Partial
  • Planned

  1. CinnabyteHQ

    Project 01. Internal Operations PlatformIn DevelopmentYear 2026

    A centralized workspace for managing internal operations.

    Request detail with workflow stepper
    A CinnabyteHQ request detail page showing the workflow stepper, the next-step approval card and the activity timeline.
    Overview dashboard
    CinnabyteHQ overview dashboard in dark mode with request counts, a request pipeline, items needing attention and recent activity.CinnabyteHQ overview dashboard in light mode with request counts, a request pipeline, items needing attention and recent activity.
    The CinnabyteHQ requests list at phone width, with view tabs, filters and request cards.
    • Request workflow: new → in_review, in_review → in_progress, in_progress → completed
    • Approval routed by category
    • Activity log written server-side
    • 409 on an invalid transition
    Screens from the running app · demo data

    CinnabyteHQ is an internal operations platform that centralizes requests, approvals, and ongoing work into one structured workspace. It is a full-stack web app with its own REST API and a PostgreSQL database.

    Problem
    Small teams often track internal requests, sign-offs, project work and tasks across scattered tools, which makes it hard to see what is waiting on whom and what changed.
    Solution
    One workspace where every request follows an explicit workflow. Categories that need sign-off are routed to an approver automatically, and every change is written to an activity log.

    Runs locally against a Supabase-hosted PostgreSQL database with seeded demo data. Authentication is the next milestone.

    Stack

    • Astro
    • TypeScript
    • PostgreSQL
    • REST API
    • Node.js
    • Zod
    • Tailwind CSS
    View case study: CinnabyteHQGitHub repository for CinnabyteHQ (opens in a new tab)

  2. Centralized Hospital Outpatient Services Database

    Project 02. Database Management SystemDesign ProjectYear 2026

    From registration to billing, in one relational model.

    A relational database designed to centralize hospital outpatient service information, including patient, doctor, appointment, consultation, laboratory, prescription, and billing-related data.

    Entity relationship diagram: 7 entities · 6 relationships.

    • Patient books Appointment (one to many).
    • Doctor attends Appointment (one to many).
    • Appointment results in Consultation (one to one).
    • Consultation orders Laboratory (one to many).
    • Consultation issues Prescription (one to many).
    • Appointment is billed by Billing (one to one).
    PatientPKpatient_idDoctorPKdoctor_idAppointmentPKappointment_idFKpatient_idFKdoctor_idConsultationPKconsultation_idFKappointment_idLaboratoryPKlab_record_idFKconsultation_idPrescriptionPKprescription_idFKconsultation_idBillingPKbilling_idFKappointment_id
    PatientPKpatient_idDoctorPKdoctor_idAppointmentPKappointment_idFKpatient_idFKdoctor_idConsultationPKconsultation_idFKappointment_idLaboratoryPKlab_record_idFKconsultation_idPrescriptionPKprescription_idFKconsultation_idBillingPKbilling_idFKappointment_id
    1. Patient
      • patient_id, primary key
    2. Doctor
      • doctor_id, primary key
    3. Appointment
      • appointment_id, primary key
      • patient_id, foreign key
      • doctor_id, foreign key
    4. Consultation
      • consultation_id, primary key
      • appointment_id, foreign key
    5. Laboratory
      • lab_record_id, primary key
      • consultation_id, foreign key
    6. Prescription
      • prescription_id, primary key
      • consultation_id, foreign key
    7. Billing
      • billing_id, primary key
      • appointment_id, foreign key
    Simplified overview of the core entities and how they relate. The full ERD, relational schema and data dictionary can be added below.

    Simplified entity overview · key columns only

    1. UNF, unnormalized form
    2. 1NF, first normal form
    3. 2NF, second normal form
    4. 3NF, third normal form
    1. UNF

      Unnormalized form

      The starting point: repeating groups and multi-valued fields.

    2. 1NF

      First normal form

      Every field holds one atomic value, with no repeating groups.

    3. 2NF

      Second normal form

      Every non-key attribute depends on the whole key.

    4. 3NF

      Third normal form

      No transitive dependencies between non-key attributes.

    Concepts

    • Entity Relationship Diagram
    • Relational schema
    • Primary keys
    • Foreign keys
    • Relationships
    • Data dictionary

    A database and system design project. It is not deployed in a hospital.

    Stack

    • PostgreSQL / MySQL
    • SQL
    View case study: Hospital Outpatient Database

  3. Mobile Booking Application

    Project 03. Mobile ApplicationIn DevelopmentYear 2026

    From an open time slot to a confirmed booking.

    Choose a time

    01Date02Time03Confirm

    Available times

    October 6, 2026

    • 9:00 AM
    • 10:00 AM
    • 11:00 AM (unavailable)
    • 1:00 PM
    • 2:00 PM (selected)
    • 3:00 PM
    • 4:00 PM (unavailable)
    • 5:00 PM
    Continue

    Confirm

    01Date02Time03Confirm

    Review booking

    Service
    Professional Haircut
    Provider
    Sample Salon
    Date
    October 6, 2026
    Time
    2:00 PM
    Duration
    1 hour
    Total
    ₱500
    Confirm booking

    Booking confirmed

    Your appointment is scheduled.

    Professional Haircut

    October 6, 2026

    2:00 PM

    ₱500

    View bookingBack to home

    My bookings

    Upcoming (selected)Past
    • Confirmed

      Professional Haircut

      Sample Salon

      Oct 6 · 2:00 PM

      ₱500

      View details

    • Confirmed

      Relaxation Massage

      Serenity Spa

      Oct 9 · 11:00 AM

      ₱900

      View details

    Interface recreation · based on the app’s screens

    A mobile booking application designed around availability checking, booking confirmation, and booking history. The full client-side flow is built with React Native and Expo; the backend is planned.

    Booking flow

    1. Check AvailabilityCalendar + time slots
    2. Create BookingReview the details
    3. ConfirmationBooking confirmed
    4. Booking HistoryUpcoming & past

    PlannedFront-end prototype running on local mock data. The REST API and PostgreSQL backend are planned, not built.

    Stack

    • React Native
    • TypeScript
    • Expo
    • REST APIPlanned
    • PostgreSQLPlanned
    View case study: Mobile BookingGitHub repository for Mobile Booking (opens in a new tab)

  4. SellBytes

    Project 04. E-commerce PlatformIn DevelopmentYear 2026

    A connected storefront from product discovery to order management.

    The SellBytes catalog with a category tree, brand filters, sorting and product cards.
    The SellBytes admin dashboard with sales tiles, a daily revenue chart and orders by status, populated with seeded sample data.
    Storefront
    The SellBytes storefront home page with a hero headline, product search and a featured gaming PC.
    A SellBytes product page at phone width with a compact header, search and image gallery.
    Screens from the running app · sample data

    1. Product Discovery

      Catalog · search · filters

    2. Product Database

      Products · variants · stock

    3. Cart / Order

      Transactional checkout

    4. PaymentPartial

      Test gateway · Stripe unverified

    5. Order Management

      Admin back office

    PartialPayments API: test gateway works end to end · Stripe adapter unverified

    SellBytes is an e-commerce platform that connects product discovery, ordering, inventory, and payment workflows into one digital storefront: a server-rendered Astro app on a single PostgreSQL database, with an admin back office.

    Stack

    • Astro
    • TypeScript
    • PostgreSQL
    • REST API
    • Node.js
    • Payments APIPartial
    • Zod
    • Tailwind CSS
    View case study: SellBytesGitHub repository for SellBytes (opens in a new tab)

02About

Learning by building real software.

Education
Computer Science · PLMPamantasan ng Lungsod ng Maynila
Role
Software Developer
Focus
Full-Stack Development
Currently
Associate Founder, Cinnabyte
Open to
Internships & collaborations

I'm a Computer Science student at Pamantasan ng Lungsod ng Maynila (PLM) with a growing passion for software development, problem-solving, and technology-driven solutions.

Right now I'm strengthening my foundations in programming, data structures, and system design, mostly by applying them to real projects. Most of those come out of Cinnabyte, where I'm an Associate Founder, and so far they span internal tools, e-commerce, mobile apps, and database design.

Next, I'm looking for real-world experience through internships, collaborations, and projects where I can learn from experienced developers and help build practical software.

Currently developing

  • 01Programming
  • 02Data structures
  • 03System design
  • 04Full-stack development
  • 05Database systems

Looking for

Real-world projects,Internships,Collaboration,Building practical software

//Technical profile

Current focus

Full-Stack Development

Interfaces, APIs and the databases behind them, built as one system so the pieces agree with each other.

  1. L1InterfaceReactAstroTypeScriptTailwind CSS
  2. L2APINode.jsREST API
  3. L3DataPostgreSQLMySQL
Languages05
  • Python
  • Java
  • C
  • JavaScript
  • TypeScript (used in CinnabyteHQ, Mobile Booking, SellBytes)
Frontend05
  • HTML
  • CSS
  • React (used in Mobile Booking)
  • Astro (used in CinnabyteHQ, SellBytes)
  • Tailwind CSS (used in CinnabyteHQ, SellBytes)
Backend02
  • Node.js (used in CinnabyteHQ, SellBytes)
  • REST API (used in CinnabyteHQ, SellBytes)
Databases02
  • PostgreSQL (used in CinnabyteHQ, Hospital Outpatient Database, SellBytes)
  • MySQL (used in Hospital Outpatient Database)
Tools04
  • Git
  • GitHub
  • VS Code
  • Figma

03Experience

Where I've been building.

Hands-on roles alongside my studies, from building products at a software startup to an engineering internship.

03 roles · most recent first

  • Current role
  • Former role

  1. Cinnabyte

    Associate Founder · Software Engineer

    Current

    As an Associate Founder of Cinnabyte, I lead the design and development of custom software solutions, turning complex ideas into functional, production-ready systems. My work bridges full-stack engineering, system architecture, and intuitive UI/UX design, driven by start-up leadership and co-creation.

    Period
    Sep 2026 — Present · Remote
    Responsibilities
    • Product development: building e-commerce platforms, SaaS dashboards, and mobile booking applications from the ground up.
    • System architecture: designing reliable REST API infrastructure and mapping out legacy system modernizations.
    • Business solutions: creating internal operations tools designed to streamline daily workflows and improve business efficiency.
    Stack
    • React
    • React Native
    • TypeScript
    • Node.js
    • PostgreSQL
    • Astro

    Built through Cinnabyte

  2. AWS Student Builder Group — Haribon

    AI - Machine Learning Associate

    Current

    Details about the AI - Machine Learning Associate role to be added

    Period
    Sep 2026 · Manila, Philippines · Hybrid
    Stack
    • Machine Learning

  3. V-Tech Solutions

    Software Engineer Intern

    Former

    Contributed to the development of scalable enterprise applications by writing clean, maintainable Java code, working closely with senior engineers to troubleshoot and deploy reliable software solutions.

    Period
    Jul 2026 — Sep 2026 · Remote
    Responsibilities
    • Wrote clean, maintainable Java code for enterprise applications.
    • Integrated Python-based tools to automate data processing pipelines and routine operational tasks.
    • Worked with senior engineers to troubleshoot and deploy software solutions.
    Stack
    • Java
    • Python

04Mini game

FPS aimtrainer

A little side project for the FPS player in me.

  • 3 modes
  • 30s rounds
  • Canvas + TypeScript
  • Desktop · mouse
Play the aim trainer

Open to internships & collaborations

05Contact

Let's build something useful.

I'm open to internships, collaborations, software projects, and opportunities to learn and build.

Email meLinkedIn (opens in a new tab)GitHub (opens in a new tab)
or write tomonzonmarcusenzo@gmail.com