Pensacola, FL · Working remotely worldwide

I build software.

Senior iOS, macOS, Web & AI Engineer — Swift, SwiftUI & LLM integration.

✓ Available nowRemoteContractConsultingAI & LLM IntegrationUS Citizen

I'm Janusz Chudzynski — a senior iOS & macOS engineer with 10+ years designing, building, and maintaining native Apple applications. Most recently a Senior Software Engineer on the macOS team at TechSmith, working on Camtasia. Today I run GulfCoast Dev LLC, shipping my own iOS, web, and AI-powered products end to end.

View my work →Download résumé PDF LinkedIn ↗

Engineer.swift

// 10+ years shipping Apple software
struct Engineer {
  let name  = "Janusz Chudzynski"
  let role  = "Senior iOS & macOS"
  let years = 10  // and counting
  let focus: [Platform] = [.iOS, .macOS, .web]
  let building = "GulfCoast Dev LLC"
  let shipped  = "Camtasia @ TechSmith"
  let honor    = "WWDC Scholar"
}

extension Engineer {
  func build() -> Software {
    .usedBy(millions)
  }
}

Millions

users reached

10+ Years

Apple platforms

Camtasia

macOS · TechSmith

Author

books & courses

01001010 01000011 01101001 01001111 01010011 01101101 01100001 01100011 01001010 01000011 01101001 01001111 01010011 01101101 01100001 01100011 01001010 01000011 01101001 01001111 01010011 01101101 01100001 01100011 01001010 01000011 01101001 01001111 01010011 01101101 01100001 01100011 01001010 01000011 01101001 01001111 01010011 01101101 01100001 01100011 01001010 01000011 01101001 01001111 01010011 01101101 01100001 01100011 01001010 01000011 01101001 01001111 01010011 01101101 01100001 01100011 01001010 01000011 01101001 01001111 01010011 01101101 01100001 01100011

Selected work

Featured · TechSmith · 2019–2025 Visit ↗

Camtasia for Mac

Senior Software Engineer on the macOS team behind one of the world's most widely used screen-recording and video-editing apps. Modernized legacy Objective-C into Swift, designed the Welcome Window onboarding experience, built REST APIs for application services, added macOS-specific features including Touch Bar support, and prototyped AI/LLM-powered features with OpenAI.

macOSSwiftObjective-CAppKit / SwiftUIAI / LLM

Products · GulfCoast Dev LLC

Things I've built & shipped

Independent products I design, build, and run end-to-end — iOS, web, and AI.

VolleyHeat↗

Native iOS app for indoor & beach volleyball scorekeeping and analytics — court-based play tracking, heatmaps, directional vectors, and player/team stats on a local-first JSON model. Swift & SwiftUI.

iOS

ainotes.us↗

Extracts, analyzes, and summarizes YouTube videos into organized, searchable notes. Built with Python and the OpenAI APIs.

AI · Web

micasa.rentals↗

A furnished-rental listings and property platform connecting renters with short- and long-term stays in Pensacola.

Web

nepacozyrentals.com↗

A rental property site for cozy stays in Northeastern Pennsylvania.

Web

helpspets.com↗

A pet directory for finding pet-related businesses, services, shelters, rescues, parks, veterinarians, and other local resources.

Directory · Web

Peony Palace (concept)↗

A concept site for a Chinese restaurant in Elk Grove, CA: a Dragon Festival theme with an animated dragon, lucky red envelopes, a Mongolian BBQ walkthrough and the full feast menu.

Demo · Web

Founder · 2025–Present

GulfCoast Dev LLC

My current studio, focused on native Apple software, web, and AI-powered products. I design, build, and ship my own products end-to-end — VolleyHeat, ainotes.us, micasa.rentals — and take on select client and consulting work.

iOSmacOSWebAI / LLMProducts

Founder · 2015–2020

Izotx LLC

A software studio building mobile, web, wearable, and blockchain applications for clients — including Next Exit History and a 2K Games companion app — from prototype to release. Led architecture, development, and client communication.

iOSAndroidWearableBlockchainConsulting

Academia · University of West Florida · 2008–2019

Software Engineer & Instructor, UWF

In the Computer Science department I created and taught mobile programming courses — among the first university iOS courses in the U.S. — and built mobile apps, web apps, games, and simulations. I led grant-funded work including applications for the U.S. Navy, and presented research on iBeacons, IoT, and Apple Watch.

TeachingGrant researchU.S. NavyAuthorship

U.S. Navy grant
Grant-funded iOS app development

First-in-U.S. iOS course
Created & taught the CS curriculum

Apple WWDC Scholarship
Awarded for platform excellence

About GulfCoast Dev

GulfCoast Dev is the studio of Janusz Chudzynski — a senior engineer who has spent 10+ years shipping Apple-platform software used by millions.

Over my career I've delivered software for private clients, state institutions, military organizations including the United States Navy, and large commercial companies. Most recently I worked on Camtasia for Mac at TechSmith, modernizing legacy code, shipping user-facing features, and researching AI/LLM integration in a native desktop app — so I bring production-grade craft to every engagement, not just working code.

Today I run my own products under GulfCoast Dev LLC, which means I understand what it takes to own something end-to-end: the architecture, the UX, the release, and everything that breaks after launch. If you need a senior Apple engineer who can lead the work and hand you something maintainable, that's exactly what I do.

Skills & stack

Languages

Swift
Objective-C
Python
JavaScript
Solidity
SQL

Apple frameworks

SwiftUI · UIKit
AppKit · macOS
Core Data
Core Graphics / Animation

Platforms & data

iOS · iPadOS · macOS
REST APIs · JSON
Firebase
Git · Xcode

AI & systems

OpenAI APIs
AI / LLM integrations
Legacy modernization
App architecture

The path

2025 → now

Founder & Independent Developer — GulfCoast Dev LLC

Mobile & AI-powered products · VolleyHeat, ainotes.us, micasa.rentals · OpenAI integrations & crypto/web work

2019 – 2025

Senior Software Engineer — Camtasia, macOS

TechSmith · Obj-C → Swift modernization, Welcome Window onboarding, REST APIs, Touch Bar, AI/LLM prototypes

2015 – 2020

Owner & Lead Developer — Izotx LLC

iOS, Android, web, wearable & blockchain apps · Next Exit History, 2K Games companion & client projects

2011 – 2019

Software Engineer & Instructor — University of West Florida

CS dept · mobile apps, games & simulations · U.S. Navy grant work · created & taught mobile programming courses

2008 – 2010

Graduate Assistant / Adjunct — University of West Florida

Taught iPhone Programming & iPhone Web Applications · built iPhone apps, games, and CS department websites

Honor

Apple WWDC Scholarship

Awarded by Apple for excellence in platform development

Beyond the code

Education

M.S. Software EngineeringUniversity of West Florida
M.S. Industrial EngineeringWarsaw University of Technology
B.S. Industrial EngineeringWarsaw University of Technology

Publications

Developing iOS 5 ApplicationsCo-authored with Laura J. White
Retiring with Bitcoin and Real Estate
Technical writing on iOS & mobile development

Awards

Apple WWDC Scholarship Recipient
Outstanding Graduate Teaching Assistant
Outstanding Graduate Assistant

Talks & research

Mobile & Wearable Apps at UWFiTenWired, 2015
Mobile Development & Apple WatchIn the age of IoT
IoT, Contextual Computing & iBeacons2014

Work with me · via GulfCoast Dev

Native Apple software and web apps, built by someone who's shipped it at scale.

App & web development

End-to-end iOS, macOS, and web product work — from concept to shipped release.

AI / LLM integration

Bring language models into native apps with the right UX and guardrails.

Technical advisory

Architecture reviews, mentoring, and platform strategy for your team.

Let's talk

Hiring, or building something?

Whether you're a hiring team looking for a senior Apple-platform engineer or a company that needs one built, the fastest way to reach me is below.

Email me →Connect on LinkedIn ↗Résumé PDF

// currently

Open to senior / staff roles & select consulting

iOS · macOS · Web · Swift · SwiftUI · AI/LLM. Remote-friendly, based in the U.S.

emailgulfcoastdevs@gmail.com phone(850) 502-9913

basedPensacola, FL