Nasir Uddin Khan
SENIOR IT CONSULTANT · OCP ORACLE DBA · ERP & AI · ENTERPRISE SECURITY CONSULTANT · 18+ YEARS
🌐 khannasir.com · 💼 linkedin.com/in/nasir-uddin-khan
📍 Dhanmondi, Dhaka-1205, Bangladesh · 🌍 Worldwide Remote
Professional Summary
IT and security consultant with 18+ years of enterprise experience, specializing in the security and reliability of the Oracle database and ERP systems that banks, pharmaceutical companies and enterprises run on. An OCP-certified Oracle DBA (RAC, Data Guard, RMAN) and CSV-validated-systems specialist who designs high-availability, audit-ready and hardened infrastructure — and delivers hands-on security work: exposure & vulnerability audits, database/server/CMS hardening, email-spoofing (DMARC) protection, access governance and incident remediation.
A rare combination — someone who understands enterprise databases deeply and how to secure them. Currently deepening into offensive security and penetration testing to bring an attacker's perspective to enterprise data defense.
Certifications & Education
Certifications: Oracle Certified Professional (OCP) · Red Hat Certified — Linux · CSV (Computer System Validation)
In progress: PMP (Project Management Professional) · pursuing security certifications — eJPT / PNPT (penetration testing)
Education: MBA
Core Expertise
Security & Hardening
- Database security & privilege hardening (Oracle)
- Server, Linux & CMS (WordPress) hardening
- Digital exposure & vulnerability audits
- Email authentication — SPF, DKIM, DMARC
- TLS/SSL, security headers, secret rotation
- Threat-exposure monitoring & remediation
- Penetration testing (skills in active development)
Compliance & Governance
- CSV — Computer System Validation (pharma)
- Audit trails & governed access (RBAC)
- Backup, DR & business continuity
- Data sovereignty — on-premise AI (data stays in-house)
- Incident response & root-cause remediation
- Documentation & validated-environment discipline
Database Administration
- Oracle 11g / 12c / 19c / 21c / 26ai
- Multi-node RAC cluster configuration
- Data Guard standby & DR setup
- RMAN backup & recovery
- AWR / ADDM performance tuning
- SQL Server 2019 / 2022 administration
- MySQL replication & tuning
Infrastructure & Middleware
- High-availability (HA) architecture
- Disaster recovery (DR) planning
- Server & storage capacity sizing
- Network & firewall topology
- Linux / Windows server admin
- Oracle WebLogic 12c / 14c
- SSL / DNS / hosting management
ERP & AI Integration
- ERP system design & data modeling
- AI assistants grounded in ERP data
- Executive dashboards & SQL reporting
- Knowledge-base preparation
- Governed access & audit controls
- Workflow automation
Web & Digital
- Full-stack web development
- Database-backed web systems
- Web hosting & deployment
- Technical SEO & performance
- Schema markup & analytics
- Multi-site portfolio management
Industries Served
- Banks & Financial Services — Oracle DBA, WebLogic & security-hardened infrastructure for a government bank
- Pharma & Healthcare — a leading pharmaceutical group; CSV-validated systems, audit trails & compliance reporting
- Software & IT — secure custom software and database solutions
- Farms & Agriculture — ERP design, inventory, AI insights
- Logistics & Manufacturing — ERP integration, executive analytics
Selected Recent Work
- Built a Digital Exposure Audit service — breach, email-spoofing, and website-exposure assessment with plain-English remediation reporting.
- Security-hardened production systems and CMS estates — user-enumeration, XML-RPC, version-disclosure and header fixes; DMARC rollout across multiple domains.
- Designed on-premise / sovereign-AI architectures so sensitive business data never leaves the organization.
Languages
English (Professional) · Bengali / বাংলা (Native) · Hindi (Conversational)