Senior Backend Engineer, Firewall

🔥 11 hours ago

🇺🇸 United States – Remote

💵 $175k - $230k / year

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 20%

What it means: the chance that no one is really hiring for this job.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Horizon3.ai

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2019

🔒 Cybersecurity

🤖 Artificial Intelligence

☁️ SaaS

Cybersecurity • Artificial Intelligence • SaaS

Horizon3. ai is a cybersecurity company that specializes in autonomous penetration testing through its platform, NodeZero. The company's mission is to proactively identify and address attack vectors before they can be exploited, allowing organizations to continuously assess their security posture across various environments including cloud, IoT, and on-premises systems. Founded by veterans from the US Special Operations and National Security sectors, Horizon3. ai offers a self-service SaaS solution that provides organizations with insights into their security vulnerabilities without requiring persistent or credentialed agents.

📋 Description

• Partner with Product to turn firewall effectiveness and tuning ambitions into concrete, buildable requirements • Translate blue team workflows and pain into prioritized product outcomes • Push back on features or agent behavior that would not hold up in a real SOC • Define acceptance criteria for detection, effectiveness, and tuning features • Validate releases before customers see them • Serve as the standing domain reference for Engineering and AI research • Own current knowledge of major firewall platforms at management console, policy/configuration, traffic/logging, and API levels • Maintain knowledge of policy evaluation and enforcement, including rule order, zones, objects, NAT, security profiles, exceptions, and default versus hardened configurations • Define vendor-specific policy semantics across differently modeled platforms • Track platform releases, policy/API changes, inspection and threat-prevention capabilities, and vendor guidance • Define correct firewall tuning recommendations and evaluate remediation output • Partner with the Attack team on attack-path validation, firewall coverage, and remediation guidance

🎯 Requirements

• 6+ years in firewall engineering, network security, security operations, incident response, or threat hunting • Hands-on production experience administering and tuning enterprise firewall platforms, including Palo Alto PAN-OS, Fortinet FortiGate/FortiOS, Cisco Secure Firewall, or Check Point Quantum • Experience with rulebases, NAT, segmentation, and policy exceptions • Deep understanding of firewall policy outcomes and traffic/threat logs for triage, containment, and investigation • Fluency in false-positive and false-negative tradeoffs, overly permissive rules, service-availability risks, and firewall policy effectiveness • Strong working knowledge of MITRE ATT&CK and network-control coverage frameworks • Understanding of post-compromise attacker behavior, network traffic, firewall telemetry, command-and-control, lateral movement, and data exfiltration • Demonstrated experience shaping a product or platform as a domain expert • Ability to influence without authority • Exceptional technical writing • Ability to translate between engineers, AI researchers, product managers, SOC analysts, and executives • Scripting ability, ideally Python, for querying APIs, inspecting telemetry, and prototyping analysis • Comfort with SQL and large volumes of event and telemetry data • Legally authorized to work in the United States

🏖️ Benefits

• Equity package in the form of stock options for all full-time roles • Health, vision & dental insurance for you and your family • Flexible vacation policy • Generous parental leave • 100% remote work • Career development opportunities • Inclusive and collaborative culture

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