Hello world. I'm

CARL MASTERS

|

First-year cybersecurity student based in Tokyo, Japan

VIEW MY WORK CONTACT ME

Who I Am

I'm a first-year Cybersecurity student at Temple University Japan, based in Tokyo. I got into coding out of curiosity and found I genuinely love it I've worked through Python, C, Java, and web development as part of my degree. My biggest interests right now are cybersecurity and digital privacy, network security, operating systems, and AI and machine learning.

I've already had the chance to build a real-world project and place first in a hackathon, and I'm eager to keep growing. I'm looking for opportunities to collaborate, contribute, and learn alongside people who hold themselves to a high standard and push each other to be better.

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Real Projects

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Languages

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Hackathons

about_me.py
class CarlMasters:
    school  = "Temple Univ. Japan"
    year    = "1st Year Cybersecurity"
    skills  = ["Python", "C",
           "Java", "HTML/CSS/JS"]
    focus   = ["Cybersecurity & Privacy",
           "Operating Systems",
           "AI / ML"]
    based   = "Tokyo, Japan"

    def greet(self):
      return "Just getting started."

What I Know

Languages

Python C HTML CSS JavaScript

Web

Responsive Design DOM Manipulation Flexbox / Grid Web Forms

Tools

Git GitHub VS Code Terminal / CLI

Currently Learning

Basic Cybersecurity Digital Privacy Operating Systems AI / Machine Learning Discrete Mathematics Precalculus Java

INFINITE SKILL STREAM

Python C JavaScript HTML CSS Git GitHub Terminal CLI Responsive Design DOM Manipulation Cybersecurity AI and ML Operating Systems Voice AI API Integration Hackathon Builder Problem Solving Team Collaboration Web Development Digital Privacy VS Code Flexbox / Grid Web Forms Python C JavaScript HTML CSS Git GitHub Terminal CLI Responsive Design DOM Manipulation Cybersecurity AI and ML Operating Systems Voice AI API Integration Hackathon Builder Problem Solving Team Collaboration Web Development Digital Privacy VS Code Flexbox / Grid Web Forms
Web Forms Flexbox / Grid VS Code Digital Privacy Web Development Team Collaboration Problem Solving Hackathon Builder API Integration Voice AI Operating Systems AI and ML Cybersecurity DOM Manipulation Responsive Design Terminal CLI GitHub Git CSS HTML JavaScript C Python Web Forms Flexbox / Grid VS Code Digital Privacy Web Development Team Collaboration Problem Solving Hackathon Builder API Integration Voice AI Operating Systems AI and ML Cybersecurity DOM Manipulation Responsive Design Terminal CLI GitHub Git CSS HTML JavaScript C Python
AI and ML CSS Python Web Development C DOM Manipulation GitHub Git JavaScript HTML Flexbox / Grid Web Forms Digital Privacy Team Collaboration Problem Solving Hackathon Builder API Integration Voice AI Operating Systems Terminal CLI Cybersecurity Responsive Design VS Code AI and ML CSS Python Web Development C DOM Manipulation GitHub Git JavaScript HTML Flexbox / Grid Web Forms Digital Privacy Team Collaboration Problem Solving Hackathon Builder API Integration Voice AI Operating Systems Terminal CLI Cybersecurity Responsive Design VS Code

What I've Built

Nov. 2025 — Present

This Portfolio

carlmasters.com

Designed and coded from scratch to practice modern HTML, CSS, and vanilla JavaScript, with animations, responsive layout, and all. A project that's also the thing showing you the project.

HTML CSS JavaScript Supabase Responsive Design DOM Manipulation Git
Jan. 2026 — Present

Freelance English Teacher Site

kadysenglish.com

A business website built for a freelance English teacher to advertise their services. Features a clean landing page, a services section, and a contact form. My first project built for a real client.

HTML CSS JavaScript Responsive Design Flexbox / Grid Web Forms
March 2026

UI/UX Hackathon — 1st Place

Temple University Japan — Tokyo, Japan

Competed with a team in a UI/UX-focused hackathon hosted by Temple University Japan. Our team took first place by designing and prototyping a clean, user-centered interface concept under a tight time constraint.

UI/UX Design Prototyping User-Centered Design Wireframing Visual Hierarchy Iterative Design Presentation Skills Competitive Problem Solving Teamwork
March 2026

Builders Weekend 2026 Hackathon

Shibuya, Tokyo, Japan

Built TabeTalk, an AI-powered dining app that removes the chaos of splitting restaurant bills. Guests sign in, provide a voice sample, and the app listens in real time during ordering to identify who ordered each item. When the check arrives, the host scans the bill, costs are assigned automatically, and everyone pays their share hands-free.

Team

Carl Masters, Bhushith Gujjala Hari, Kseniya Chadovich, Kevin Beutler, and Fangyan Fu.

Tech & APIs

Used multiple programming languages and several API keys to integrate voice and payment workflows.

Sponsor Integrations

Open Network Labs, Lovable, Supercell, VoiceOS, RevenueCat, and ElevenLabs.

Built By

Fully developed by a crew of students from Temple University Japan.

Voice AI Real-time Recognition Bill Splitting Automation API Integration Payment Workflows Rapid Prototyping Cross-functional Teamwork Product Design Deadline Management Team Collaboration
June 2026

SDGs to Startups Hackathon 2026 — 1st Place

Shibaura Institute of Technology — Tokyo, Japan

Built FocusHear in 48 hours, a real-time assistive communication platform tackling SDG 10: Reduced Inequalities. The core insight: 430 million people worldwide live with disabling hearing loss, yet no existing technology gives them the ability to choose whose voice they hear in a crowded room. Every captioning app today transcribes everyone simultaneously, flooding users with an unreadable wall of overlapping voices. We built something different.

Team

Carl Masters, Cassady Mead, Juthathip (Jenny) Loedsinaudom, and Thiago Komeno.

Core Features

Selective Listening (tap a face, hear only that person via ElevenLabs Scribe + lip movement detection), Sign Language Bridge (ASL fingerspelling via hand position tracking), and Chat Mode (voice-enrolled speaker diarization with color-coded live log).

Sponsor & Tech

ElevenLabs (Scribe transcription + speaker diarization), real-time lip movement detection, hand position tracking for sign language recognition.

Organizers

Tokyo Student Network, Tokyo AI (TAI), TUJ CS Society, GDG on Campus at Sophia, IPUT, and Waseda University.

Voice AI Assistive Technology Accessibility ElevenLabs Speaker Diarization Sign Language Bridge Real-time Transcription SDG 10 Rapid Prototyping Team Collaboration Deadline Management
June 2026

OpenAI x Tokyo AI Hackathon — Build with OpenAI

Hongo, Tokyo, Japan

Brought a massively rebuilt FocusHear to an invite-only "Build with OpenAI" event hosted by OpenAI and Tokyo AI. Since the original SDGs to Startups prototype, the app went through a full architecture rebuild: a GPT-4o + ElevenLabs Scribe AI pipeline, Supabase Auth with Stripe billing, saved voice and face profiles with automatic in-session recognition, a sound-alert and live-translation system, and a real ONNX-based LSTM sign-language model replacing the original demo classifier. Competed against strong international teams and advanced to the first round.

Team

Carl Masters, Cassady Mead, Juthathip (Jenny) Loedsinaudom, and Thiago Komeno.

Major Upgrades Since SDGs to Startups

Vertical Slice Architecture rebuild, GPT-4o + ElevenLabs Scribe AI pipeline, Supabase Auth (email/password + Google OAuth) with Stripe Pro billing, saved voice and face profile recognition, sound-alert system with tone/intent badges and multilingual live caption translation, and a trained ONNX-based LSTM sign-language model.

Result

Advanced to the first round against a strong field of international teams.

Hosted By

OpenAI and Tokyo AI — invite-only Build with OpenAI event, Tokyo, Japan.

Voice AI GPT-4o ElevenLabs Scribe Assistive Technology Accessibility Sign Language Recognition Supabase Auth Stripe Billing Production Security Team Collaboration

My Background

2017 — 2021

High School Diploma

Lake Minneola High School — Minneola, Florida, USA

Completed a standard high school curriculum at Lake Minneola High School with coursework across core academic disciplines. Built foundational skills in mathematics, English, and the sciences while developing the study habits and work ethic that carry into everything since.

Mathematics English Science Critical Thinking Time Management
2021 — 2025

United States Marine Corps

0842 — Field Artillery Radar Operator  |  Camp Hansen, Okinawa, Japan & Camp Lejeune, North Carolina, USA

Served four years as a Field Artillery Radar Operator, operating the AN/TPS-80 Ground/Air Task Oriented Radar, AN/TPQ-48 Lightweight Counter Mortar Radar, and AN/TPQ-46 Firefinder Radar (now retired). Worked as part of a cohesive team under demanding operational conditions and strict time constraints, contributing to the successful tracking of thousands of artillery munitions and delivering critical battlefield intelligence directly to commanders.

Concurrently held a secondary billet as a Key Management Infrastructure (KMI) Custodian, responsible for the secure handling, safeguarding, loading, and operational use of highly sensitive military cryptographic keys and associated intelligence materials.

Selected to attend two formal military schools, earning qualifications as both a Combat Marksmanship Coach (CMC) and a Combat Marksmanship Trainer (CMT). As a CMC, provided individualized coaching to improve Marines' fundamental rifle and pistol proficiency. As a CMT, operated full courses of fire, developed training curricula, and advanced modern marksmanship standards across the unit.

Critical Thinking Leadership Teamwork Discipline Radar Employment & Maintenance Instructional Skills Cryptographic Key Management Operational Security High-Pressure Decision Making Curriculum Development
2025 — Present

B.S. Cybersecurity

Temple University Japan — Tokyo, Japan

First-year coursework covering programming fundamentals in Python, C, and Java, introductory cybersecurity concepts, and core math for Cybersecurity at Temple University Japan. Learning to think like a security professional from the ground up.

Python C Java Network Security Algorithms & Data Structures Discrete Mathematics Object-Oriented Programming Ethical Hacking Version Control (Git) Problem Solving Tokyo Campus

CERTIFICATIONS

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My Articles

Career Advice

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Most resumes never make it past the first 10 seconds. Here's what separates the ones that do: format, phrasing, and the one-page rule.

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Cybersecurity

Everyday Cybersecurity Habits That Actually Matter

You don't need to be a security expert to protect yourself online. The right habits, consistently applied, cover the vast majority of real-world threats most people face.

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Privacy

The Privacy Stack: Open Source and Encrypted Alternatives for Every App You Use

Big Tech apps are convenient, but they come at a cost. These privacy-respecting swaps are just as good, sometimes better.

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Let's Talk

I'm actively looking for internship and entry-level opportunities in cybersecurity, including SOC analyst roles, penetration testing, security research, and more. Whether you have a role, a project, or just want to connect my inbox is open.