Southern California

Bryan Medina

Quality Assurance Engineer

I find out why software breaks, then build the tests and tooling that keep it from breaking again. Today that means hardware and firmware QA at TP-Link; before that, triaging regressions in WebKit's CI at Apple.

See my projects Résumé GitHub

215 automated tests written for one iOS app
99% line coverage, enforced in CI
4 Apple platforms validated in WebKit CI
300+ students taught in a course I designed

01 · About

Quality is an engineering problem.

I'm a Cal State Fullerton computer science graduate who gravitated toward the part of software most people avoid: figuring out what went wrong. At Apple I worked on WebKit regression test integrity, where I was the first point of contact for incoming test failures across iOS, macOS, watchOS, and tvOS.

That work taught me to read CI logs quickly, tell a product defect from an infrastructure hiccup, and write the scripts that make the next triage shorter. I now apply it to hardware and firmware validation as a QA engineer, and to my own projects, which tend to ship with more tests than features.

Before any of that I designed and taught a programming course for more than 300 students, which is where I learned to explain technical things plainly.

Languages

Python
Swift
C++
JavaScript
Bash
SQL
HTML & CSS

Quality engineering

Regression testing
CI triage
Test automation
XCTest & XCUITest
Swift Testing
Bug reporting

Tools

Git
Jira
Xcode
Docker
macOS & UNIX
SwiftUI
Generative AI tools

02 · Experience

Where I've worked.

May 2026 – Present

QA Engineer

TP-Link Systems Inc.

Execute test plans and document findings across hardware and firmware validation cycles, tracking defects to resolution in Jira.
Communicate system status, test findings, and planned changes to engineering and program management teams.
Build Python automation for data collection and reporting, cutting manual overhead across test cycles.

Jun 2025 – Nov 2025

WebKit Regression Test Integrity QE Engineer (Internship)

Apple

First point of contact for incoming test failures, triaging and filing multiple bugs daily and driving them to resolution across teams.
Validated automated test results across iOS, macOS, watchOS, and tvOS build trains within WebKit's CI infrastructure.
Analyzed CI logs and historical test data to isolate regressions and separate product defects from infrastructure issues.
Improved regression detection scripts and internal tooling to sharpen failure identification and cut triage time.
Rebaselined layout tests after behavioral or visual changes to keep CI outcomes stable.

Aug 2021 – May 2026

Technical Specialist

Apple

Provided Tier 1/2 technical support for hardware, software, and connectivity issues across Mac, iPhone, iPad, and Apple Watch in a high-volume walk-in environment.
Performed hands-on hardware diagnostics and component-level troubleshooting to find the root cause of failures.
Ran one-on-one and small-group sessions, explaining technical findings to people of every skill level.

Mar 2020 – Aug 2020

CS Instructor and Course Designer

TGR Foundation

Designed and taught “What's ‘App’ening in Computer Science,” a virtual course for 300+ students in the Los Angeles County School District.
Led a team of certified instructors teaching introductory Java programming.

03 · Projects

Things I've built.

Featured · iOS

FitTracker

A SwiftUI calorie and macro tracker for iPhone. I took an existing team project, restructured it to be testable, fixed 11 bugs including hard-coded API keys and a login that didn't work, and wrapped it in three layers of automated tests.

94 Swift Testing unit tests and 24 XCUITest UI tests
97 Python tests for the test runner itself
99% line coverage, with CI failing below 85%

Swift
SwiftUI
Swift Testing
XCUITest
Python
CI

Capstone · Full stack

Parfummelier

A fragrance recommendation web app built as a senior capstone. It uses curated scent data and quizzes to learn what a person likes, then suggests fragrances and gives them forums to talk about it.

TypeScript frontend with Python services behind an API gateway
Containerized with Docker Compose for dev, test, and production
Custom scripts to scrape, clean, and map scent data

TypeScript
Python
Docker
MongoDB

Tooling · Desktop

USB Performance Tool

A desktop app that benchmarks USB storage plugged into a router over SMB. It runs a matrix of transfers, verifies every file by checksum, and judges each result against per-file-size thresholds.

Deterministic test files verified against SHA-256 manifests
Flags cached or physically impossible speeds
Reports as HTML with charts, Excel dashboards, CSV, and JSON

Python
Tkinter
xlsxwriter
PyInstaller

Coursework · Desktop

Contact Book

A contacts app modeled on iOS Contacts, built for a software engineering course. It has accounts, rich contact details, and a few integrations that go past the basics.

Looks up a contact's city from their area code
SMS notifications through the Twilio API
Login and registration backed by a local database

Python
SQLite
Twilio

The rest is on GitHub

Smaller experiments, coursework, and whatever I'm working on this week.

04 · Education

What I studied.

Aug 2020 – Dec 2024

B.S. Computer Science

California State University, Fullerton

Certifications

Google Cloud Big Data and Machine Learning Fundamentals
Introduction to Tableau

Relevant coursework

Data Structures and Algorithms
Operating System Concepts
iOS Mobile Development
File Structures and Databases
Object-Oriented Programming
Data Science and Big Data
Blockchain Technologies

05 · Contact

Let's talk.

I'm always happy to talk about quality assurance and test engineering. The fastest way to reach me is a message on LinkedIn.

Message me on LinkedIn Download résumé GitHub