Network Security Lead

Cynosure Corporate Solutions; Chennai District; On-site; INR 2,500,000 - 4,000,000; Full time

Job summary

Cynosure Corporate Solutions is seeking a Network Security Lead in Chennai to design, implement, and monitor security controls across WAFs, load balancers, and firewalls. You will perform vulnerability testing, collaborate with SOC teams, and drive security improvements with minimal downtime.

Ideal candidates have 7+ years in network security, leadership experience, and certifications such as CCSP or CCNP Security. The role demands strong communication and coordination with customers and vendors.

Qualifications

• BE/B.Tech in CSE/IT/EEE/ECE/EIE with 7+ years in network security.
• 2+ years in firewalls/WAF/load balancers and 2+ years in application security.
• Led at least 2–3 full implementation projects as an individual contributor.
• Completed major migration/revamp of WAF/LB/Firewall.
• Strong communication, coordination, and problem-solving skills.
• Familiarity with ITIL/ITSM processes (incident/change management).
• Team player with leadership and mentoring capability.
• CCSP, F5-ASM, PCNSE, CCNP Security, CEH certification is a plus

Responsibilities

• Design and manage WAF rules to prevent application attacks (SQLi, XSS).
• Configure and optimize load balancers for security and performance.
• Migrate and revamp firewalls with minimal downtime and improved policy structure.
• Perform security assessments – vulnerability scanning and penetration testing.
• Collaborate with SOC teams to investigate and respond to threats.
• Coordinate with ISPs/vendors for upgrades and threat mitigation.
• Maintain documentation – policies, configurations, incident reports, and MIS reports.
• Guide and mentor team members on technical requirements.
• Handle risk analysis, OEM escalations, and critical issue resolution.
• Interact effectively with customers and vendors.

Skills

WAF Expertise

Load Balancers

Firewall Management

Network Security

Cloud Security

Container Security

SIEM Tools

Automation IaC

Incident Mgmt

Compliance PCI-DSS

Education

BE/B.Tech in CS/IT

MCA

MSc/MS in CS

Tools

F5 ASM

Imperva

FortiWeb

F5 LTM

Radware ADC

Palo Alto

FortiGate

Cisco Firepower

Kubernetes

Docker

Splunk

QRadar

ELK

RSA

Ansible

Terraform

Job description

Cynosure Corporate Solutions | Full time

Network Security Lead

Chennai City Corporation, India | Posted on 06/12/2025

Cynosure Corporate Solutions is a human capital services company. Our focus is to provide Executive Search, Recruitment, Training, Temporary Staffing services, Statutory Compliance's, and other HR aligned services. We understand the business goals of our clients and their need to align human resources to these goals. We are committed to provide high quality manpower in accordance to global standards and their requirements. Our candidates stand testimony to our professional competency.

We work with clients in IT/ITES, Manufacturing, Automobile, Health, Telecom, Media.

Job Description

• Design and manage WAF rules to prevent application attacks (SQLi, XSS).
  
• Configure and optimize load balancers for security and performance.
  
• Migrate and revamp firewalls with minimal downtime and improved policy structure.
  
• Perform security assessments – vulnerability scanning and penetration testing.
  
• Collaborate with SOC teams to investigate and respond to threats.
  
• Coordinate with ISPs/vendors for upgrades and threat mitigation.
  
• Maintain documentation – policies, configurations, incident reports, and MIS reports.
  
• Guide and mentor team members on technical requirements.
  
• Handle risk analysis, OEM escalations, and critical issue resolution.
  
• Interact effectively with customers and vendors.
  

Requirements

Key Skills & Expertise:

• Web Application Firewall (WAF): Hands-on experience with F5 ASM, Imperva, FortiWeb – deployment, configuration, and management.
  
• Load Balancer: Proficiency in F5 LTM/GTM, Radware ADC – optimization and troubleshooting.
  
• Firewall Management: Experience with Palo Alto, FortiGate, Cisco Firepower – revamp, migration, rule optimization.
  
• Network Security Concepts: Strong knowledge of Zero Trust, DDoS protection, SSL/TLS, IDS/IPS.
  
• Cloud Security: Familiar with AWS, Azure, GCP – Security Groups, NACLs, WAF, Cloud Firewalls.
  
• Container Security: Kubernetes, Docker – microservices and container-level protection.
  
• SIEM Tools: Splunk, QRadar, ELK, RSA – for threat detection and response.
  
• Automation: Ansible, Terraform – for policy management and infrastructure as code.
  
• Incident Management: WAF/firewall/DDoS incident handling and RCA.
  
• Compliance: Awareness of PCI-DSS, OWASP Top 10, NIST standards.
  

What we need :

• B.E/B.Tech (CSE/IT/EEE/ECE/EIE), MCA, M.Sc./MS in Computer Science.
  
• 7+ years in network security; 2+ years in firewalls/WAF/load balancers and 2+ years in application security.
  
• Led at least 2–3 full implementation projects as an individual contributor.
  
• Completed major migration/revamp of WAF/LB/Firewall.
  
• Strong communication, coordination, and problem-solving skills.
  
• Familiarity with ITIL/ITSM processes (incident/change management).
  
• Team player with leadership and mentoring capability.
  
• CCSP, F5-ASM, PCNSE, CCNP Security, CEH certification is a plus