ck.dev-verse

> about.sh

Carl Kristian R. Ortiz
BS Computer Engineering
3rd Year

Kamusta, I’m CK. Computer Engineering student at PUP Manila, studying on a DOST-SEI scholarship.
I work across the stack: PCB layout, routing, firmware, full-stack. What I actually like is the seam between hardware and software, where both sides have to give a little.

I also write. Not as a side hobby, but as the other way I process things. I think good engineering is already a form of care. You’re always building for someone, even if you don’t say it out loud.

$ education.log

Level	School	Program	Year
Elementary	Santo Tomas Catholic School	-	S.Y. 2016–2017
Junior HS	Mangaldan National High School	STE Program	S.Y. 2020–2021
Senior HS	Mangaldan National High School	STEM Strand	S.Y. 2022–2023
College	Polytechnic University of the Philippines	BS Computer Engineering	S.Y. 2023–Present

> gpa_history.log

1st Year
- 1st Semester: 1.66 GPA (S.Y. 2023–2024)
- 2nd Semester: 1.93 GPA (S.Y. 2023–2024)
2nd Year
- 1st Semester: 1.82 GPA (S.Y. 2024–2025)
- 2nd Semester: 1.83 GPA (S.Y. 2024–2025)
- Summer Term: 1.00 GPA (S.Y. 2024–2025)
3rd Year
- 1st Semester: 1.45 GPA (S.Y. 2025–2026)
- 2nd Semester: loading (S.Y. 2025–2026)

> skills.db

> technical_skills[]

Python · JavaScript · HTML/CSS

C++ · VHDL/Verilog · SQL

LTspice · Arduino IDE · TinkerCAD

Full-Stack Architecture React Native, Next.js, Flask
Hardware Engineering & PCB Design KiCAD, LTspice, Arduino IDE, TinkerCAD
AI-Assisted Development Cursor, Codex, Claude Code
Technical Writing Diataxis Framework
Frontend & UI/UX Design WCAG 2.1 AA, Figma, Framer, Paper
Network Analysis Cisco Packet Tracer, Wireshark

> soft_skills{}

Resilience & Adaptability: Perseveres through academic and personal challenges, adapting strategies to maintain forward momentum.
Emotional Intelligence: Deep understanding of human dynamics, motivations, and unspoken needs in collaborative settings.
Critical Thinking: Deconstructs multifaceted problems from logical, ethical, and human-centric viewpoints.
Communication: Expresses complex thoughts with precision and poetic clarity.
Project Leadership: Takes proactive ownership of group projects, ensuring team success and meeting rigorous deadlines.

> work.sh

Present Oct 2025

Junior Software Developer

● CURRENT

Dewise Solutions Philippines Inc.

End-to-end documentation strategy for Alon platform
B2B content marketing on EU Pay Transparency Directive ~ >25% LinkedIn engagement
Production-ready social media pubmats using pixel-accurate design tokens
AI-assisted automations: LLM agents for content automation and brand consistency

Sep 2025 Jul 2025

Product Architect & Data Analyst Intern

Dewise Solutions Philippines Inc.

Architected core equity analytics framework for the Alon platform
Designed 'Hybrid Threshold' and 'Dual-Modifier' models to mitigate evaluation bias
.py simulation engine to stress-test framework algorithms against varied datasets
High-fidelity UI mockups for a manager-facing analytics dashboard

> projects.sh

// 01. Hardware Engineering

AQuAbot: Aqua Quality Analyzing Robot

Raspberry Pi · Arduino MEGA · Python · C++ · IoT · Sensors

Autonomous floating robot for real-time water quality analysis
Integrated 4 sensors: Dissolved Oxygen, pH, Turbidity, Temperature
Wireless data transmission; 95–100% accuracy in controlled trials
Award: 3rd Place, Best in Robotics Paper Presentation

Choco Drink Dispenser: Combinational Logic Vending Machine

KiCAD · PCB Design · Boolean Algebra · K-Maps · 74LS148 · Arduino Nano · Logisim · TinkerCad

4-variant iterative build for CMPE 304; final variant adds Arduino Nano + buzzer SFX
74LS148 priority encoder, hex inverters, AND/OR gates; NAND-gate workaround for TinkerCad
Two-board PCB in KiCAD; NPN drivers, MT3608 step-up; weatherproof 240×160mm ABS enclosure
K-Map minimized Boolean expressions verified across 8 test cases in Logisim and TinkerCad

Variable Linear DC Power Supply (0–30V, 2A)

PCB Design · FR-4 · Analog Circuits · KiCAD · Technical Documentation

Lab-grade adjustable DC power supply from 220V AC
Custom FR-4 PCB, dual thermal management (passive heatsink + 24V fan)
Validated: <1% load regulation, <0.5% line regulation
Sole author of the 32-page technical report

2-Bit ALU Sub-System

VHDL · Verilog · Intel Quartus Prime · Digital Logic

Functional ALU: add, subtract, multiply, divide
Gate-level adder, subtractor, MUX implementations
Waveform validation against truth tables in Questa

Automated LED Actuator Circuit

KiCAD · PCB Routing · 3D Modeling · Gerber Files

Schematic design, PCB layout routing, and 3D modeling in KiCAD
Translated circuit modules into manufacturing-ready Gerber files

// 02. Software Engineering

RailTime PH: Real-Time Train Station Tracker

React Native · Python · SQLite · WCAG 2.1 AA · Accessibility

Offline-capable Metro Manila train tracking app; cross-functional team lead
Accelerometer-based detection algorithms
WCAG 2.1 AA compliant: text-to-speech, high-contrast UI for visually impaired users

DSA Visualizer Suite: 7 Deployed Web Applications

HTML · CSS · JavaScript · Python · Flask · REST API · Vercel

Structures: Arrays (Tic-Tac-Toe + Minimax AI), Stacks, Queues, BST, Binary Trees
Algorithms: 7 sorting algorithms with speed controls, Tower of Hanoi (BFS auto-solver)
BST app: Python/Flask backend + RESTful API + Cytoscape.js frontend

CashClarity: Personal Finance Manager

Python · CustomTkinter · SQLite · Matplotlib · ReportLab · OOP

Desktop app: authentication, dashboard, transaction notebook, budget planner
50/30/20 rule-based budget calculator with dynamic pie charts and bar graphs
PDF export via ReportLab; modular OOP architecture

Movie House Management System

Python · Tkinter · SQLite · OOP · UML

Full-stack desktop app: movie listings, room bookings, GUI-driven
12+ distinct classes, UML diagrams, custom Vigenère cipher for security

// 03. Cross-Disciplinary / Logic Systems

Water Flow Monitoring System (Consultant Role)

74LS148 · LM3914 · Combinational Logic · Prototyping

Technical lead for a parallel team; prototyped 80%+ of the circuit
Priority encoder-driven pump control based on tank water levels

Mode-Selectable 4-Bit Synchronous Counter

D Flip-Flops · 74LS74 · Sequential Logic · 7-Segment Display

State machine alternating between Even-Down and Odd-Up counting
Dual 7-segment display output

> research.sh

> cat fractured_monolith_2025.pub: The Fractured Monolith: Systematic Review of Modern Operating System Design
2025 · Ortiz et al. · PUP
67-page literature review of 35+ papers (2020-2025). Covers heterogeneous computing, cloud-native OS, kernel security, AI-augmented kernels, Post-Quantum Cryptography.
> cat pkm_latency_2025.pub: Comparative Analysis of Latency in PKM Architectures: Local-First vs. Cloud-Based
2025 · Ortiz · PUP
Benchmarked Obsidian vs. Notion: 4.2x faster boot, 7.5x lower search latency for local-first architectures.
> cat bioplastic_2023.pub: Effectiveness of Canistel Seed and Potato Peel Waste as a Starch-Based Bioplastic Film
2023 · Ortiz, Esperida, Eslava, Mejia
Novel agricultural-waste bioplastic with statistically validated mechanical properties.
> cat machoism_2022.pub: Machoism Dominance: Patriarchal Influence of Fictophilia from Hypermasculine Wattpad Characters
2022 · Ortiz et al.
Phenomenological study on digital media's influence on gender norms; 168-page thesis.
Champion: Best Qualitative Research Title · Champion: Best Final Defense
> cat aquabot_2021.pub: AQuAbot: Aqua Quality Analyzing Robot as Water Quality Analyzer and Sender
2021 · Ortiz, Laza, Cornel
Autonomous IoT robot for real-time water quality monitoring in aquaculture.
> cat techlearning_2020.pub: The Effectiveness of Technology-Aided Learning Among Grade 10 Learners
2020 · Ortiz
Quantitative study on tech-assisted instruction outcomes.

> links.cfg

> external_links[]

> contact.sh

// TRANSMISSION FORM > enter NAME: > enter EMAIL: > select SUBJECT: > enter MESSAGE: > enter SECURITY_CLEARANCE: