Gregg Hilferding
Chief Technology Officer at GreenBar
Tampa, Florida, United States
Summary
👤
Senior🎓
Top SchoolGregg Hilferding is a seasoned technology executive and hands-on builder with 10+ years of leadership experience scaling product and engineering teams into high-performing organizations. Currently CTO at Certegy Payment Solutions, he blends strategic product vision with operational rigor—having progressed through VP and director roles to lead delivery, organizational development, and internal tooling at scale. He founded GreenBarLabs, delivering 40+ web projects while hiring and training teams, and brings deep full‑stack chops across PHP frameworks, modern JS, DevOps and cloud infrastructure. Gregg is also a pragmatic GenAI practitioner and trainer who helps companies adopt responsible AI governance, prompt engineering, and augmented workflows. A former Army Reserve specialist and long-time volunteer with Scouting America, he prioritizes leadership development and durable team culture as force multipliers. Notably, he couples agency-style client delivery experience with enterprise product leadership, making him equally fluent with client-facing constraints and C-suite strategy.
10 years of coding experience
21 years of employment as a software developer
Diploma, Diploma at Zephyrhills High School
Stackoverflow
75reputation
15kreached
8answers
1question
Github Skills (26)
lightbox10
responsive9
hash6
redirect6
php6
mod-rewrite6
htaccess6
ajax6
javascript6
apache6
restful-api4
lumen-framework4
laravel4
api4
restful4
Programming languages (4)
Github contributions (5)
the-universe/Homo-Sapiens
Jul 2016 - Jul 2016
Contributions:10 commits, 2 PRs, 8 pushes in 5 days
phonism-llc/freeswitch_agent
Jul 2018 - Aug 2018
Contributions:9 commits, 1 PR, 8 pushes in 20 days
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