Network Security Lead

3 days ago

Chennai, Tamil Nadu, India Cynosure Corporate Solutions Full time US$ 90,000 - US$ 1,20,000 per year

We are looking for a skilled and proactive Network Security Lead to design, implement, and manage our security infrastructure. You will lead critical projects around firewall/WAF/load balancer modernization, assess and mitigate risks, guide the team on security best practices, and ensure regulatory compliance.

Key Responsibilities

  • Design, deploy, and optimize WAF policies to defend against application-layer attacks (SQLi, XSS).
  • Configure and secure load balancers (F5 LTM/GTM, Radware ADC) for high availability and performance.
  • Execute firewall migrations (Palo Alto, FortiGate, Cisco Firepower) with minimal downtime and effective rule set management.
  • Conduct vulnerability scans and penetration tests, ensuring threat identification and remediation.
  • Collaborate with SOC teams to investigate and mitigate security incidents.
  • Engage with ISPs and OEMs for upgrades, escalations, and real-time threat responses.
  • Maintain accurate records for policies, configurations, incident reports, and MIS documentation.
  • Provide technical leadership, mentoring, and support to junior team members.
  • Perform impact analysis, handle critical issue escalations, and lead resolution processes.
  • Interface with internal stakeholders, customers, and vendors to ensure smooth operations.

Skills & Expertise Required

  • Hands-on with F5 ASM, Imperva, FortiWeb - deployment and tuning.
  • Advanced troubleshooting of F5 LTM/GTM, Radware ADC.
  • Migration and management of Palo Alto, FortiGate, Cisco Firepower.
  • Deep understanding of Zero Trust, DDoS defense, SSL/TLS, IDS/IPS.
  • Proficiency in DMZ, VPN, NAC, LAN/WAN segmentation.
  • Familiarity with AWS, Azure, GCP - including native firewall and WAF capabilities.
  • Working knowledge of Kubernetes, Docker, microservices protection.
  • Experience with Splunk, QRadar, ELK, RSA.
  • Infrastructure as Code using Ansible, Terraform.
  • Knowledge of PCI-DSS, OWASP Top 10, NIST frameworks.
  • Hands-on experience in handling and documenting WAF/firewall/DDoS incidents.

Required Qualifications

  • Bachelor's or Master's degree in Computer Science, IT, or a related field (BE/B.Tech, MCA, M.Sc./MS).
  • 7+ years of experience in network security, with 2+ years in application security and 2+ years handling firewalls, WAFs, and load balancers.
  • Proven track record of leading 2-3 end-to-end security implementation or migration projects.
  • Strong interpersonal, leadership, and problem-solving abilities.
  • Familiarity with ITIL/ITSM processes (change, incident, and problem management).

Preferred Certifications (Nice To Have)

  • F5-ASM, PCNSE, CCNP Security, CCSP, CEH

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