
TENEX is a cybersecurity company leveraging advanced artificial intelligence and human expertise to transform enterprise security. Backed by Andreessen Horowitz (a16z) and Shield Capital, TENEX’s…

TENEX is a cybersecurity company leveraging advanced artificial intelligence and human expertise to transform enterprise security. Backed by Andreessen Horowitz (a16z) and Shield Capital, TENEX’s…
What they do: AI-native Managed Detection and Response (MDR) and AI SOC services
Founded / launch: Commercial launch January 2025
Recent raise: $27M Series A (announced September 11, 2025)
Backers: Crosspoint Capital Partners (Series A lead), Andreessen Horowitz (a16z), Shield Capital
Employees: ~60
Enterprise security operations and threat detection/response
Technology, Information and Internet
$27M
Participation from Andreessen Horowitz and Shield Capital; additional participation reported from DTCP, DeepWork Capital, and the Florida Opportunity Fund
“Backed by top-tier venture investors including Andreessen Horowitz (a16z) and Crosspoint Capital Partners”
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TENEX is an AI-native, automation-first, built-for-scale Managed Detection and Response (MDR) provider. We are a force multiplier for defenders, helping organizations enhance their cybersecurity posture through advanced threat detection, rapid response, and continuous protection. Our team is composed of industry experts with deep experience in cybersecurity, automation and AI-driven solutions. Backed by leading investors, we are rapidly growing and seeking top talent to join our mission of revolutionizing the AI-Native MDR landscape.
We’re a fast growing startup backed by industry experts and top tier investors led by Crosspoint Capital Partners and also backed by Shield Capital, DTCP (formerly Deutsche Telekom Capital Partners), Deepwork Capital, and the Florida Opportunity Fund. Seed round led by Andreessen Horowitz (a16z). As an early employee, you’ll play a meaningful role in defining and building our culture. Get in on the ground floor. We’re a small but well-funded team that just raised a substantial round – joining now comes with limited risk and unlimited upside.
The Opportunity:
We're looking for a highly motivated and skilled IT Systems & Security Engineer to join our dynamic team. This pivotal role is perfect for an Systems/Security Engineer with a strong foundational understanding of security, eager to evolve into a full-fledged security and systems specialist. You'll play a crucial role in safeguarding our entire IT infrastructure and digital assets, including those of our valued customers. You will be designing, implementing, and optimizing cutting-edge security controls and building out robust system and security capabilities from the ground up. You'll be instrumental in ensuring seamless IT operations while proactively strengthening TENEX's and our customers’ security posture against an ever-evolving threat landscape through robust engineering practices and intelligent automation.
Location: This role will require onsite in our Sarasota, FL location.
Culture is one of the most important things at TENEX.AI—dive into our culture deck at culture.tenex.ai to see how we live it every day, with a deep emphasis on the collaboration and community that only in-person work delivers.
Bonus Points If You Have:
Why Join TENEX?
Ready to help us build a more secure future? Apply now! We're excited to see how your skills and passion can contribute to our mission.
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