Helping Security Teams Detect & Respond to Breaches at Cloud-Scale.


Panther is an engineering-first company. Our roots come from building tools to solve security issues at scale. We work hard to instill reliability and best practices into our code in order to uphold confidence in our products.

Our Values:

Customers First

Listen and be attentive to customers, understand their pain points, and build solutions to keep them happy. 

Relentless Prioritization

Focus on the most urgent and important items with the highest customer or market impact.

Move Fast and Iterate

Ship quickly, incorporate feedback, scale, repeat.

Be an Owner

Take ownership and be the change you want to see in our company and product.

Seek to Understand

Build empathy, learn from your teammates, measure success using data, and continually learn and grow.

Build Clarity

Create narratives to express ideas, commit to actionable and accountable next-steps.

“When security issues inevitably occur, a fast response can make an enormous difference in mitigating the damage done. Panther bridges the gap between security event detection and the platforms operations teams already use to mount structured and fast responses. It is a must-have for any business adopting a DevSecOps mindset.”

Andrew Miklas, cofounding CTO PagerDuty


At Panther, we want to help companies stay secure. We are a group of practitioners who have lived these problems and built solutions. Our team comprises prior engineers from companies such as Airbnb and Amazon.

Jack Naglieri

Founder, CEO

Austin Byers

Lead Backend Engineer

William Lowe

Head of Business Operations

Kostas Papageorgiou

Senior Software Engineer

Nicholas Hakmiller

Security Engineer

Aggelos Arvanitakis

Frontend Engineer

Russell Leighton

Principal Software Engineer

Kartikey Pandey

Head of Content

Sugandha Lahoti

Technical Writer

Alex Mylonas

Senior Software Engineer

Nick Angelou

Senior Security Engineer


S28 Capital

Innovation Endeavors

Fathom Capital

645 Ventures

Interested in joining our team?