Senior Cybersecurity Engineer

Location: Remote |
Experience Level: Senior (5+ years)

Build the next generation of autonomous threat detection systems. You'll design and develop Sentinel—our agentic threat detection platform that autonomously monitors, analyzes, and responds to threats in real-time.

Sentinel is redefining security by replacing reactive detection with proactive, autonomous agents. As a Senior Cybersecurity Engineer, you'll architect and build intelligent security agents that learn from threats, correlate events, and make autonomous response decisions without human intervention.

You'll work on:

• Autonomous threat detection agents - Design agents that continuously monitor and analyze security events
• Intelligent anomaly detection - Build systems that recognize threats through behavioral analysis and pattern correlation
• Autonomous response workflows - Create decision-making frameworks for autonomous threat response
• Threat intelligence integration - Build agent systems that learn from threat data and improve autonomously

Required:

• 5+ years of professional cybersecurity or security engineering experience
• Deep expertise in threat detection, security architecture, or incident response
• Strong understanding of modern security challenges (advanced threats, threat intelligence, compliance)
• Experience with SIEM systems, IDS/IPS, or security analytics platforms
• Proficiency in at least one programming language (Python, Go, Rust, or C++)
• Experience with cloud security (AWS, GCP, or Azure)

Nice to Have:

• Experience with machine learning or anomaly detection systems
• Background in autonomous systems or agent-based architecture
• Contributions to open-source security projects
• Knowledge of threat intelligence platforms or threat hunting frameworks

• Deep technical problem-solving skills with a focus on autonomous security systems
• Experience designing systems that make intelligent decisions without human intervention
• Ability to work across multiple domains (cloud, on-premises, edge environments)
• Strong communication skills to explain complex security concepts to non-security teams
• Passion for building production-grade systems that operate reliably at scale

• Design and develop autonomous threat detection agents for Sentinel
• Build threat correlation and analysis systems that operate autonomously
• Contribute to Sentinel's threat intelligence and learning capabilities
• Collaborate with teams to integrate Sentinel into customer environments
• Participate in security reviews and threat modeling for our agentic systems
• Mentor junior engineers and contribute to technical documentation

• Work on cutting-edge agentic security - Build systems that represent the future of cybersecurity
• Autonomous systems at scale - Design security agents deployed globally
• Technical depth - Solve challenging problems in threat detection and autonomous response
• Ownership - Own significant portions of the Sentinel platform
• Remote-friendly - Work from anywhere with a collaborative, distributed team
• Learning opportunities - Stay at the forefront of autonomous security systems and AI
• Competitive salary commensurate with experience
• Equity in Arlin Systems
• Remote work flexibility
• Annual discretionary PTO