Mitika Tewari

I’m a Security Consulting Engineer focused on delivering enterprise outcomes through networking, cybersecurity, and automation. I work across firewall upgrades, migrations, and security modernization—building solutions that meaningfully support organizational goals.

In my current role, I’ve led enterprise firewall upgrade and migration programs for Cisco ASA, FTD, and FMC HA/MI/cluster environments. I built and validated lab PoC environments using Cisco CML, EVE-NG, and VMware ESXi, including NIST-compliant IPsec IKEv2 VPN scenarios, access policy restructuring, and NAT redesign. I also architected NetFlow-based telemetry pipelines, using Cisco SNA for network behavior anomaly detection and integrating with ISE to correlate user identity with network traffic patterns.

I thrive on scaling security operations with automation and compliance rigor. I executed ISE-as-Code and Firewall-as-Code workflows using Python, Terraform, YAML, REST APIs, and Gitlab CI/CD pipelines, improving deployment consistency and reducing manual effort. I’ve supported security assessments and compliance validations across Cisco Hypershield environments (1000+ devices), led stakeholder readout sessions, and performed PSIRT analysis on up to 700+ defect issues to validate upgrade readiness for mission-critical operating system environments.