Senior Threat Detection Engineer

Company Overview: 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. 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.

About

the Role: Tenex is seeking a highly motivated and skilled Senior Threat Detection Engineer to join our growing Security Operations team. In this critical role, you will be responsible for proactively identifying and mitigating security threats by developing and implementing advanced detection rules (YARA-L). You will work with our Security Operations team and leverage your deep understanding of attack methodologies, security vulnerabilities, and log analysis to enhance security posture and protect assets.

Responsibilities: Design, develop, implement, and maintain custom detection rules, correlation searches, and alerts within Google Security Operations (SecOps) to identify malicious activity, security incidents, and policy violations. Utilize your expertise in the SecOps detection engine and YARA-L syntax to create efficient and effective detection logic. Analyze large datasets of security logs and events from various sources (e.g., cloud platforms, endpoint detection and response (EDR), network devices, applications) to identify patterns and anomalies indicative of threats. Stay up-to-date with the latest threat intelligence, attack techniques, and security trends to proactively develop new detection strategies. Collaborate closely with Security Analysts to tune detections logic based on incident analysis and threat landscape changes. Contribute to the development and maintenance of security documentation, including YARA-L rules, response strategies, playbooks, and operational procedures. Participate in the evaluation and integration of new security tools and technologies. Automate detection creation, threat intelligence gathering, and rule deployment. Provide mentorship, training, and guidance to junior team members.