Jeff Kereakoglow
Principal Software Engineer at NRG Energy
Greater Boston United States
Summary
👤
Senior🎓
Top SchoolJeff Kereakoglow is a Principal Software Engineer in Greater Boston with 11 years of experience evolving from early iOS work (pre-ARC) into leadership roles shaping mobile and web teams. He blends hands-on engineering—shipping apps, migrating Objective-C to Swift, and creative App Store workarounds—with a philosophy-driven approach to influence and team development learned at companies from DraftKings to NRG Energy. As a former Director of Engineering, he prioritizes product value, collaboration, and mentorship over technical dogma, and still experiments with AI-assisted developer workflows linking Claude, GitHub Copilot, and custom tooling. Practical, curious, and patient, Jeff is as comfortable diving into stack traces and Swift prompts as he is coaching engineers to create work rather than just do it.
11 years of coding experience
13 years of employment as a software developer
UMass Lowell
Greek, English
Github Skills (68)
dynamic-forms10
dynamic-table10
xlform10
ios-library10
obj10
nokogiri10
xslt10
forms10
passwords10
xml10
html-parser9
swift9
controller9
swiftui9
objective-c9
Programming languages (9)
Github contributions (5)
jkereako/HorizontalTimeline
Feb 2016 - Aug 2017
Contributions:11 commits, 9 pushes, 1 branch in 1 year 5 months
jkereako/LoginView
Feb 2016 - Sep 2022
Contributions:46 commits, 43 pushes, 1 branch in 6 years 8 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.