Network Security Engineer
Noblesoft Technologies
San Jose, CA, United States
1 day ago
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Role details
Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
8 years minimum
Working hours
Regular working hours
Job source
Tech stack
Amazon Web Services
Application Firewall
Microsoft Azure
Bash Shell
Border Gateway Protocol
Cisco PIX
Cloud Computing Security
Complex Networks
Cyber Security
Domain Name System (DNS)
Identity and Access Management
Internet Protocol Security (IP SEC)
+33 more
Intrusion Detection Systems
Virtual Private Networks (VPN)
Python (Programming Language)
Network Security
Network Protocols
Open Shortest Path First (OSPF)
Windows PowerShell
Azure Active Directory
Zero Trust Network Access
Security Information and Event Management
TCP/IP
Virtual Local Area Networks
Software Vulnerability Management
Wide Area Networks
Scripting
Transport Layer Security
Okta
Cyberark
QRadar
Cyber Threat Analysis
Firewalls (Computer Science)
Palo Alto Networks
Performance Monitor
Tenable Nessus
Drilldown
Microsoft Sentinel
Fortinet
Firepower
Ddos
Splunk
Cisco
Qualys
Servicenow
Job description
We are seeking a highly skilled Network Security Engineer (L3).., * Serve as the primary L3 escalation point for complex network security incidents, providing deep-dive analysis and resolution beyond L1/L2 capabilities
- Lead proactive monitoring and event triage across customer-managed security infrastructure including firewalls, IDS/IPS, SIEM platforms, and endpoint security tools
- Perform root cause analysis (RCA) and develop permanent remediation strategies for recurring security incidents and vulnerabilities
- Manage and respond to security events related to malware, advanced persistent threats (APTs), DDoS, unauthorized access, and policy violations
- Administer and fine-tune security technologies including SIEM (Splunk, QRadar), Firewall (Palo Alto, Cisco ASA/Firepower, Fortinet), PAM, IAM, and Cloud Security tools
- Oversee vulnerability management lifecycle - from scanning and prioritization to remediation tracking and reporting
- Ensure SLA compliance for incident detection, response, and resolution across all managed accounts
- Develop and maintain SOPs, runbooks, and knowledge base articles to enhance team capability and consistency
- Participate in change management processes, reviewing and approving firewall rule changes, access requests, and security configuration updates
- Provide executive-level incident reports and briefings to client stakeholders and internal leadership as required
- Mentor and provide technical guidance to L1 and L2 engineers, supporting skill development and operational excellence
- Collaborate with client IT teams, vendors, and third-party security partners on security projects and initiatives
Requirements
- 8+ years of hands-on experience in network security operations, SOC, or managed security services
- Deep expertise in firewall administration: Palo Alto Networks (PCNSE preferred), Cisco Firepower/ASA, Fortinet FortiGate, or Check Point
- Proficiency with SIEM platforms: Splunk (SPLK-1002/3002 preferred), IBM QRadar, or Microsoft Sentinel
- Strong understanding of network protocols: TCP/IP, BGP, OSPF, VLANs, VPNs (IPSec/SSL), DNS, HTTP/S
- Experience with vulnerability management tools: Tenable Nessus, Qualys, or Rapid7 InsightVM
- Familiarity with IAM and PAM solutions (CyberArk, BeyondTrust, Okta, Azure AD)
- Solid understanding of cloud security principles across AWS, Azure, or GCP environments
- Demonstrated experience working in an ITIL-based service delivery model with SLA accountability
- Strong analytical, troubleshooting, and documentation skills
- Ability to work in a 24x7 on-call rotation environment
Preferred Qualifications
- Industry certifications: CISSP, CISM, CEH, CCNP Security, PCNSE, or equivalent
- Experience supporting Fortune 500 or enterprise-scale managed security environments
- Exposure to Zero Trust architecture, SASE, or SD-WAN security frameworks
- Scripting/automation skills (Python, PowerShell, Bash) for security task automation
- Prior experience with ServiceNow for ITSM and incident management workflows
Experience supporting VIP/executive-level incidents with executive communication skills
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