**Job Summary** Network Security Lead - Network Security Engineer **Responsibilities** Key Responsibilities Review and approve firewall requests in line with risk appetite Review and analyse firewall rules to ensure they are effective and in line with security best practices Ensure all firewall rules are recertified by owners in the specified timeframe Where no owner is made available ensure an owner is found and that necessary information is updated Perform firewall ruleset review Validate the rule compliance report of the firewalls generated from the automated firewall review solution and share with the respective stakeholders Perform ACL ruleset management add update remove optimize to remove defunct duplicate rules Follow the change management process for creationmodificationremoval of rules with necessary approvals Clearly document all changes to firewall rules including the reason for the change the details of the change the requestor and the date and time of the change Periodically reviewing existing firewall rules to ensure they are still necessary and appropriate Remove outdated or redundant rules Regularly assess rule effectiveness Adjust rules based on issues identified Experience Qualifications Should have 8 to 12 years of experience in setup configuration and ongoing management of firewall devices like Palo Alto F5 Zscaler Cisco ISE Azure DDoS Willing to work in 24X7 rotational shifts Should have to lead mentor the junior team members Should have excellent communication skills Good to have CEH certification Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.