Senior Staff Systems Engineer, Network & Security

Securonix is leading the transformation of cybersecurity by helping organizations stay ahead of modern threats. Security teams are no longer constrained by data or tools. They are constrained by speed, clarity, and confidence. Securonix was built to close that gap. Our mission is to enable security teams to decide and act faster across the entire threat lifecycle.
The Securonix Unified Defense SIEM is the industry’s first platform powered by agentic AI and designed with a human-in-the-loop philosophy. It unifies detection, investigation, and response in a single system. Advanced UEBA delivers deep behavioral insight across users, entities, and data. Native threat intelligence continuously enriches detections and investigations with real-world context. AI reinforces every layer of the platform while keeping accountability with the security team.
Built cloud-native for scale and performance, the platform enables real-time analytics, deep investigation, and automated response without compromise. Analysts gain faster access to relevant signals. Investigations move from days to minutes. Response becomes consistent and measurable. The result is a CyberOps experience that scales as threats evolve.
Securonix is recognized as a six-time Leader in the Gartner Magic Quadrant for SIEM and a Customers’ Choice on Gartner Peer Insights. The company has been featured by leading publications including WIRED, Dark Reading, and Fortune for its innovation and leadership in security operations. Organizations rely on the platform for always-available data, rapid search and investigation, continuously updated threat content, and a fully integrated Threat Detection, Investigation, and Response experience.
Backed by Vista Equity Partners, one of the world’s leading enterprise software investors, Securonix benefits from deep operational expertise and a long-term commitment to innovation and growth. This partnership strengthens our ability to scale the platform, accelerate product execution, and support customers as their security needs evolve.
With more than 1,000 customers worldwide, including a meaningful portion of the Fortune 100, Securonix operates at global scale. Our ecosystem of partners and managed security service providers extends that reach, helping organizations deploy and operate with confidence wherever they do business. What drives us is how we work.
We win as one team. We operate with trust, respect, and shared accountability.
We are customer driven. Innovation is guided by real security challenges and measurable outcomes.
We act with agility. Change is constant, and we stay aligned on purpose while adapting fast.
That focus is how Securonix helps organizations move from reactive security to proactive, autonomous operations.
Summary:
We are looking for a Senior Staff Systems Engineer – Network & Security to lead the design and operation of secure, scalable, and highly available infrastructure supporting our internal IT and SaaS platform environments. This role is deeply hands-on while also setting architectural direction, with a strong emphasis on AWS networking, cloud security, and zero trust principles.
This position is particularly focused on post-acquisition integration, security program development, and continuous improvement of network and cyber defense architectures.
You will play a critical role in securing internal systems, enabling developer productivity, and ensuring resilient connectivity across cloud and corporate environments.
You will serve as a subject matter expert in network infrastructure and cybersecurity, leading a team focused on ensuring resilient, high-performing systems that align with business and compliance requirements.
Key Responsibilities:
• Lead and develop a high-performing team responsible for 24x7 security monitoring and response across multiple platforms and environments
• Establish operational processes, escalation paths, and performance metrics for continuous monitoring and incident response
• Architect and implement zero trust network access (ZTNA) for the workforce and systems
• Design network segmentation strategies across AWS and internal environments
• Deploy and manage security controls (NGFW, WAF, Shield, IDS/IPS, secure proxies)
• Partner with Security and GRC teams to align with SOC2, ISO 27001, and other frameworks
• Ensure secure access to internal tools, SaaS platforms, and production environments
• Improve identity-aware access patterns (SSO, conditional access, device posture integration)
• Support secure developer workflows and internal platform services
• Own availability, performance, and scalability of network and security infrastructure
• Lead incident response and deep root cause analysis for network/security events
• Mentor engineers and influence cross-functional teams (SRE, Security, DevOps)
• Lead design reviews and long-term infrastructure strategy
• Design, build, and mature security programs using a combination of in-house capabilities and third-party tools
• Own and operate the enterprise vulnerability management program across infrastructure, cloud, and application environments
• Establish asset visibility and coverage to ensure comprehensive and continuous scanning
• Define risk-based prioritization models incorporating exploitability, asset criticality, and business impact
• Partner with engineering and IT teams to drive timely remediation, including SLAs, tracking, and accountability
• Report on program effectiveness using metrics such as remediation timelines, exposure trends, and risk reduction
• Oversee 24x7 monitoring across multiple security and infrastructure tools, ensuring high signal-to-noise and actionable alerting
• Establish incident response processes and lead major incident investigations
Qualifications:
Required:
• 6+ years of experience in network engineering, security engineering, or related roles
• 3+ years leading teams in security operations, network engineering, or infrastructure security
• Deep expertise in AWS networking, including:
o VPC design, routing, NAT, security groups, NACLs
o Transit Gateway, PrivateLink, load balancing (ALB/NLB)
• Strong understanding of cloud security principles and zero-trust architecture
Experience with:
o Network security tools (firewalls, WAF, IDS/IPS)
o Identity-integrated access (SSO, IAM, conditional access)
• Solid foundation in traditional networking (TCP/IP, DNS, BGP, VPNs)
• Strong hands-on expertise with security tooling (e.g., SIEM, EDR, IDS/IPS, firewalls, cloud security platforms)
• Deep understanding of network design, protocols, and secure architecture principles
• Proven ability to design and implement scalable security programs
Preferred:
• Experience in cloud environments (AWS, Azure, or GCP) with a focus on secure architecture
• Experience operating or leading a 24x7 monitoring or SOC function
• Familiarity with compliance frameworks such as SOC 2, ISO 27001, or NIST
• Experience with automation and infrastructure-as-code (e.g., Terraform, scripting)
• Background in incident response, threat detection, or adversary simulation

Employment type
Full-Time

Work arrangement
No