Job Title

Network Security Reliability Engineer (NRE) – 8+ years-MumbaiSummary – An experienced Network Security Reliability Engineer responsible for ensuring the availability, stability, performance, and security of enterprise-grade network and security infrastructure across global environments. The role involves multi-vendor technology management, advanced troubleshooting, incident response, and continuous service improvement within a large international banking environment.Location – Mumbai Your Future Employer – A leading global corporate and investment banking institution and part of one of the world’s largest financial services groups by total assets. The organization operates across 30 international markets, delivering strategic IT services, ensuring global production stability, and driving innovative technology solutions to support large-scale financial operations.Responsibilities –Install, configure, and manage multi-vendor network and security infrastructure across data centers, cloud, and remote sites.Perform advanced troubleshooting, root-cause analysis, and incident response for complex network/security issues.Implement secure network architecture, segmentation, NAC, firewall optimization, and vulnerability remediation.Maintain high availability, redundancy, performance tuning, capacity planning, and traffic optimization (QoS/SD-WAN).Support audits, compliance activities, patch validation, firmware reviews, firewall rule validation, and continuous service improvements.Requirements –8–14 years of experience in network and security engineering within enterprise environments.Strong expertise in TCP/IP, routing & switching (BGP, OSPF, EIGRP), SDN, VPNs, firewalls, IDS/IPS, load balancers, proxy, NAC, and WLC systems.Hands-on experience with multiple vendors such as Cisco, Arista, Fortinet, F5, Infoblox, Check Point, Trend Micro, Ivanti, and Skyhigh.Strong troubleshooting, analytical, documentation, and stakeholder management skills.Bachelor’s degree in computer science/IT (or equivalent) with preferred certifications such as CCIE, NSE7, CCSA/CCSE, CISSP, or similar.What is in it for you –Opportunity to work in a globally recognized banking institution.Exposure to complex, large-scale enterprise network and security environments.Involvement in strategic IT initiatives across APAC, Middle East, and Americas.Continuous learning through multi-vendor technologies and advanced security platforms.Collaborative international environment with high-impact infrastructure responsibilities.Reach Us: If you feel this opportunity is well aligned with your career progression plans, please feel free to reach me with your updated profile at for a confidential discussion on the role.Disclaimer: Crescendo Global specializes in Senior to C-level niche recruitment. We are passionate about empowering job seekers and employers with an engaging and memorable job search and leadership hiring experience. Crescendo Global does not discriminate based on race, religion, color, origin, gender, sexual orientation, age, marital status, veteran status, or disability status.Note: We receive a large volume of applications daily. If you do not hear back within one week, please assume your profile has not been shortlisted. Your patience is appreciated.Fraud Alert: Scammers may misuse Crescendo Global’s name for fake job offers. We never ask for money, purchases, or system upgrades. Verify all opportunities at and report any suspicious activity immediately.Keywords: Head of Business Development, Revenue Growth Strategy, Global Market Expansion, Enterprise Sales Leadership, Strategic Partnerships, P&L Ownership, Go-to-Market Strategy.Keywords- Network Security Engineering, Enterprise Infrastructure, Multi-Vendor Technologies (Cisco, Arista, Fortinet, F5, Check Point), Routing & Switching (BGP, OSPF, EIGRP), SDN (ACI, VXLAN/EVPN), Firewalls, IDS/IPS, WAF, VPN, NAC, WLC