Back to Developers
Rishav kumar

Rishav kumar

Senior Security Engineer

Bangalore, India 5+ yrs exp 90 · Outstanding

About

Senior Security Engineer with 5+ years of experience in cloud, network, and application security across AWS, OCI, and on-premise environments. Proven track record in mitigating credential stuffing attacks by 80% and leading zero-day remediation through strategic security policies and virtual patching. Skilled in OCI WAF, F5 ASM, Palo Alto WAF, Cisco ISE, and AWS security services, with expertise in ensuring compliance with ISO 27001, NIST, PCI DSS, GDPR, and PHI frameworks.

Skills & Expertise (57)

ISO 27001 Advanced
8.0/10
5
Years Exp
NIST Advanced
8.0/10
5
Years Exp
PCI DSS Advanced
8.0/10
5
Years Exp
GDPR Advanced
8.0/10
5
Years Exp
Threat protection Advanced
8.0/10
5
Years Exp
SIEM Advanced
8.0/10
5
Years Exp
Incident Response Advanced
8.0/10
5
Years Exp
Splunk Intermediate
7.5/10
5
Years Exp
Zero Trust Intermediate
7.5/10
5
Years Exp
VPN Gateway Intermediate
7.0/10
5
Years Exp
TACACS+ RADIUS DHCP VLANs OAuth MFA TCP DNS Windows Server IP HTTPS PKI WIRESHARK Tcpdump Traceroute RCA KVM Log Analysis Traffic inspection packet capture analysis Troubleshooting LINUX Cisco ISE NGFW PHI WAF SSL TLS SAML LDAP VMware ESXi Symantec Endpoint Protection IDS IPS Nessus Load Balancing CSPM OWASP Top 10 Palo Alto Firewall AWS WAF Oracle Cloud HYPER-V Azure AWS Cloud Security SSH IPSec VPN

Work Experience

Senior Security Engineer

Oracle

Jun 2024 - Present

Lead Sec-Ops for cloud and application security across OCI, AWS, and on-premise environments, managing end-to-end incident response, vulnerability management, and access control, including leading critical zero-day remediation projects. Mitigated credential stuffing and bot-driven attacks by implementing rate-limiting, behavioral detection, and bot defense on F5 WAF and Palo Alto firewall, including whitelisting/blacklisting of URLs, domains, and IPs while configuring threat detection rules, reducing malicious traffic by 80%. Resolved complex Cisco ISE authentication and authorization incidents, ensuring seamless, secure network access for enterprise users. Managed 400+ critical vulnerabilities monthly and fine-tuned security policies to counter emerging attack vectors. Led organization-wide security awareness initiatives, delivering targeted training sessions that significantly increased policy adherence and reduced human-factor security risks. Optimized Symantec endpoint protection policies as EDR solutions, reducing malware incidents by 30% through enhanced detection logic and automation. Delivered risk assessments and security recommendations to senior leadership, informing high-level security investments and risk-mitigation roadmaps. Ensured GRC alignment by implementing ISO 27001, NIST, PCI DSS, and GDPR frameworks, supporting audit readiness and data protection for PHI/PII.

Priority Security Engineer

Citrix

Feb 2023 - Jun 2024

Managed NetScaler ADC, WAF, and VPN Gateway for global enterprise applications across APAC, EMEA, and NA regions, ensuring high availability and robust security for mission-critical services. Resolved high-priority escalations for global enterprise clients, optimizing load balancing and SSL/TLS configurations to ensure seamless service delivery. Implemented Rewrite/Responder policies, secure certificate management, and SAML/LDAP authentication. Assisted enterprise clients with VPN connectivity and security issues, enhancing remote access reliability and maintaining robust security posture across distributed networks. Proactively identified and mitigated security risks for global infrastructure, contributing to a 25% reduction in overall vulnerability exposure for high-priority clients.

Escalation Engineer / Technical Consultant

Capgemini (Cisco TAC)

Mar 2021 - Feb 2023

Served as L2 Escalation Engineer; provided expert troubleshooting for Cisco UCS, Nexus switches, and virtualization platforms. Deployed Hyperflex HCI, VMware ESXi, and RedHat RHEL in high-availability setups. Performed RCA and resolved high-impact network escalations while consistently meeting strict SLAs. Configured Nexus switches, B-series and C-series UCS hardware, and conducted log analysis. Reduced incident resolution time by 30% through internal documentation and automation scripts.

Education

Bachelor of Engineering (ECE) - Model Institute of Engineering and Technology

- 2020 · Afghanistan

Certifications

No certifications added yet

Interested in this developer?

Profile Score Breakdown

📷 Photo 10/10
📄 Resume 10/10
💼 Job Title 10/10
✍️ Bio 10/10
🛠️ Skills 20/20
🎓 Education 10/10
⏱️ Experience 15/15
💰 Rate 0/5
🏆 Certs 0/5
Verified 5/5
Total Score 90/100

Profile Overview

Member sinceJun 2026

Availability Details

Visa Status

Citizen

Relocation

Open to Relocation