
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. We’re a fast growing startup backed by industry experts and top tier investor Andreessen Horowitz. 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. We are rapidly growing and seeking top talent to join our mission of revolutionizing the cybersecurity landscape.
We are seeking an experienced Staff Software Engineer to join our core engineering team. In this role, you will drive the technical vision and execution of our platform, ensuring that it is reliable, scalable, and secure as we grow. You’ll lead architecture design, guide complex technical decisions, and mentor engineers while remaining deeply hands-on.
As one of the most senior engineers on the team, you’ll balance strategic impact with technical depth—setting the standard for engineering excellence while directly contributing to our codebase. We value proactive builders who thrive in ambiguity, enjoy tackling hard technical problems, and can influence both product and engineering direction.
Location: This role will require Monday - Thursday onsite in any of our locations. WFH Friday.
Culture is one of the most important things at TENEX.AI—explore our culture deck at culture.tenex.ai to witness how we embody it, prioritizing the irreplaceable collaboration and community of in-person work.
If you're passionate about combining cybersecurity expertise with artificial intelligence and have experience with Google SecOps and Chronicle, we encourage you to apply!
We practice pay transparency and reward performance. Offers reflect equity, experience, skills, education, and certifications. Base salary for this position in San Jose: $160,000 - $230,000
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