Sajjad A.

Hi, I'm Sajjad, a freelance Technical Consultant and Cybersecurity Analyst with over 4 years of experience supporting small, medium, and large organizations in managing, optimizing, and securing mission-critical IT systems. My background combines enterprise infrastructure administration with modern cybersecurity practices, enabling me to deliver reliable, scalable, and secure solutions tailored to business needs. Core Expertise ✔ Oracle Database Administration (11g, 12c, 19c) ✔ Microsoft SQL Server Administration ✔ Oracle Utility Applications (MDM, OUA, C2M, CC&B) ✔ Oracle WebLogic & Middleware Administration ✔ Red Hat Enterprise Linux (RHEL) Administration ✔ Database Performance Tuning & Optimization ✔ System Deployment, Migration & Upgrades ✔ Backup, Recovery & High Availability Solutions Cybersecurity & Compliance ✔ ISO/IEC 27001 Compliance & Internal Auditing ✔ Vulnerability Assessment & Risk Management ✔ Security Information and Event Management (Wazuh SIEM) ✔ Intrusion Detection Systems (Suricata IDS) ✔ Security Monitoring & Incident Response ✔ Security Hardening & Configuration Management ✔ Cybersecurity Controls aligned with NIST, ISO/IEC 27001, and PCI DSS frameworks I am committed to helping organizations improve system performance, strengthen security posture, maintain compliance, and minimize operational risks. Whether you need database administration, infrastructure support, cybersecurity consulting, compliance guidance, or threat detection solutions, I provide professional, results-driven services with a strong focus on quality and reliability.