L3 Senior Firewall Engineer – Firewall, IDS/IPS & DDoS The ideal candidate will be a highly experienced firewall and network security SME capable of owning complex enterprise security infrastructure end to end. The role demands strong technical depth, disciplined change execution, and the ability to support mission-critical services in a regulated, fast-paced environment. Role Summary: This role is responsible for designing, implementing, upgrading, and supporting enterprise network security controls across firewall, IDS/IPS, and DDoS protection platforms in complex production environments. The engineer will serve as an SME for physical and virtual security appliances and will own change execution, fault resolution, lifecycle replacements, and operational stability across hybrid and multi-site infrastructures. A. Roles and Responsibilities Lead end-to-end lifecycle management of enterprise firewall, IDS/IPS, and DDoS security platforms, including planning, deployment, upgrades, migrati...