Products · GulfCoast Dev LLC
Things I've built & shipped
Independent products I design, build, and run end-to-end — iOS, web, and AI.
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.
// 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
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01
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.
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.
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.
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.
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
02
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.
Who I work with
- →Startups shipping their first app
- →Teams needing senior iOS/macOS help
- →Universities & research groups
- →Government, military & local business
Based in
Pensacola, FL · working remotely with teams worldwide
03
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
04
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
05
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.
// currently
Open to senior / staff roles & select consulting
iOS · macOS · Web · Swift · SwiftUI · AI/LLM. Remote-friendly, based in the U.S.