We are looking for Senior Network Security Engineer with experience in designing, implementing, and managing enterprise-scale network security infrastructures across on-premises, cloud, and hybrid environments.
Mandatory Skill(s)
- Bachelor’s degree in IT/Computing or equivalent hands-on experience;
- Must have 10- 15 years of experience in to Network security infrastructure;
- Must have exposure to Firewalls (FortiGate Firewall, Cisco ASA, Check Point) VPNs, routing, switching, segmentation,IDS/IPS, WAF (e.g. F5 WAF) NAC systems;
- Strong knowledge of cloud security in AWS, Azure, or GCP (VPCs, Security Groups, NSGs);
- Automation: Basic scripting skills in Python and use of Ansible for security configuration;
- Expertise in enterprise firewalls (Cisco, Fortinet), Zero Trust Architecture (ZTA), and SASE;
- Experience in network segmentation (VLANs, VRFs) and micro-segmentation design;
- Familiar with SIEM tools such as Splunk or Microsoft Sentinel for security monitoring and analysis;
- Strong packet analysis and troubleshooting skills using Wireshark and tcpdump.
Desirable Skill(s)
- Relevant certifications preferred: Fortinet, RSA, Tenable, Trend Micro, F5;
- Strong credentials such as CCNP/CCIE Security, PCNSE, CISSP (preferred);
- NAC: Cisco ISE or similar Network Access Control systems;
- Experience in change management process and method.
Responsibilities
- Define and drive the enterprise network security strategy across on-premises, cloud, and hybrid environments;
- Lead L3/L4 incident response, root cause analysis, and remediation for critical network security issues;
- Design, deploy, and manage security infrastructure including NGFWs, IDS/IPS, VPNs, Load Balancers, and NAC solutions;
- Develop and enforce network security policies, standards, segmentation, and compliance controls;
- Architect secure cloud networking solutions across AWS and Azure, integrating cloud and on-premises environments;
- Develop, test, and maintain Disaster Recovery (DR) and Business Continuity (BCP) network security capabilities;
- Evaluate and implement emerging security technologies such as Zero Trust and SASE to enhance security posture;
- Produce high-quality HLD/LLD documentation and mentor engineering teams on security best practices and advanced troubleshooting;
- Serve as the highest escalation point for complex incidents, ensuring timely resolution within SLA commitments;
- Drive change management, operational excellence, automation initiatives, and continuous service improvement;
- Collaborate with cross-functional teams, stakeholders, and clients to deliver secure, scalable, and resilient network services.
If you are interested in this role, click on the “Apply to this job” button below or you could also write in with your CV to Binodini Panda at binodini.p@sciente.com quoting the job title.
