Software engineer, UI designer, published technical author, public speaker with 20 years’ experience. Work has been cited, reviewed, and favorably mentioned by a variety of print and web publishers, including those in the scientific community. Focused on the design and development of applications for macOS and iOS. Building Cocoa applications since the initial release of Mac OS X 10.0. Looking to take the next step in my career toward furthering the visions of my future employer as a leader.


macOS • iOS • Xcode • Objective-C • Swift • Cocoa


Career History

Full resume available upon request.

Sketch B.V. – The Netherlands Software Engineer

Software Engineer (Remote)
Sep, 2019 – Present

National Institutes of Health, NIAID – Bethesda, MD

Senior Software Engineer (Remote)
Jun, 2011 – Sep, 2019

Senior Scientific System Analyst / Senior Software Engineer (On-Site)
April, 2007 – May, 2011

Peachpit Press (Pearson Education) – Berkeley, CA

Author (Remote)
Oct, 2010 – Aug, 2011

Bartas Technologies

Sole Proprietor / Independent Developer
Jun, 2002 – Apr, 2020

Franklin County Career & Technology Center – Chambersburg, PA

Adult Education Instructor
Summers of 1996 & 1997

Various Companies – PA, MD, DC, VA

IT Manager / Network Engineer / Rogue Developer
1996 – 2007

Speaking Engagements

  • Jan 15, 2020: Working Together, CLT Sketch Meetup (Charlotte, NC)
  • Jun 29, 2017: The Hackintosh, CocoaHeads Group (Raleigh, NC)
  • Dec 01, 2012: Xcode 4, CocoaConf (Raleigh, NC)
  • Nov 28, 2011: Xcode 4, Part 2/2, iDeveloper Live Podcast, Episode 35
  • Nov 21, 2011: Xcode 4, Part 1/2, iDeveloper Live Podcast, Episode 34
  • Nov 02, 2011: Xcode 4, CocoaHeads Group (Washington, DC)


It is my pleasure to provide a strong letter of recommendation for Josh. I have known and employed Josh for 12 years. He has been a consummate programmer, both for the UI design elements, as well as the implementation side. In addition, his support of customers has been outstanding. Indeed, his contributions resulted in a scientific publication that detailed the program he helped develop. I hired Josh to write two different applications, SPICE and Pestle. Josh’s expertise in UI/UX was highly evident throughout this process. He developed a modern Mac UI that users could quickly grasp and work with. Particularly with SPICE, for which the analyses can be very sophisticated, this became paramount. Josh is an outstanding programmer, who excels in UI/UX design and implementation. He is certainly very clever, inquisitive, and is an excellent resource. He is someone who interacts extremely well with users and engineers alike, and I am sure he will enable any programming effort synergistically.

Dr. Mario Roederer

Josh is one of the best developers I have ever worked with. He is truly interested in software development and is keen on expanding his skill set in Objective C and Xcode. He is fast in understanding complicated system and is able to contribute unique ideas in system design and implementation. Besides technology, he is also interested in identifying and utilizing best practices in software development. Josh also likes to work with other developers and share his knowledge with others. He has strong communication skills and a good sense of humor.

Dr. Yongjian Guo

I hired Josh as a software developer for a very challenging scientific project. Josh was able to acquire the complex subject matter knowledge in a very short time and used his critical thinking and outstanding technical skills to deliver a very high quality product. Josh works well with his peers, is always ready to lend a helping hand and contribute his knowledge, and has forged very solid relationships with our scientific community.

Dr. Stephan Bour

See Also

  • See Portfolio for a detailed list of my software applications and print publications.
  • References and downloadable resume in various formats available upon request.