// Senior DBA & Architect · 25+ Years

Mahmood U. Siddiqi

Oracle · SQL Server · Solutions Architect · Data Architect

Senior Database Administrator and emerging Solutions, Data, and Enterprise Architect with over 25 years designing, optimizing, and securing mission-critical database environments — now bridging into cloud-native architecture on AWS.

✓ AWS Cloud Practitioner
✓ AWS Solutions Architect — Associate
⬡ AWS SysOps Admin — In Progress
⬡ AWS Developer — Planned
⬡ AWS Solutions Arch — Pro — Planned
01 — Profile
About Me

With more than 25 years in the field, I have built a deep expertise in relational database systems — from schema design and query optimization to high-availability clustering and disaster recovery. My career spans Oracle and SQL Server environments across industries including finance, healthcare, and government.

Today I am channeling that foundation into cloud architecture, pursuing a path toward Solutions, Data, and Enterprise Architecture on AWS. I believe the best architects are those who have spent years in the engine room — and I have.

I hold two AWS certifications and am actively working toward three more, with a focus on designing scalable, resilient, cost-efficient cloud systems.

25+
Years Experience
2
AWS Certs
3
Certs Planned
Skills & Technologies
// DATABASE

Oracle Database

Oracle 19c/21c RAC Data Guard RMAN ASM Performance Tuning PL/SQL OEM
// DATABASE

SQL Server

SQL Server 2019/2022 Always On AG SSRS SSIS T-SQL Query Optimization Replication
// CLOUD

AWS Cloud

RDS / Aurora Redshift S3 EC2 VPC IAM CloudFormation Lambda
// ARCHITECTURE

Solutions Architecture

Enterprise Architecture Data Architecture HA / DR Design Migration Planning Cloud-Native Design
// DATA

Data Engineering

ETL / ELT Data Modeling Data Warehousing AWS Glue Redshift Athena
// OPERATIONS

Database Operations

Backup & Recovery Capacity Planning Security Hardening Compliance Automation Linux / Windows
03 — Career
Work Experience
2018 — Present
Senior Database Administrator
Your Current Employer

Lead DBA responsible for managing and optimizing enterprise Oracle and SQL Server environments supporting 500+ users. Spearheading cloud migration strategy to AWS RDS and Aurora, reducing infrastructure costs by 30%. Designed HA/DR architecture using Always On Availability Groups and Oracle Data Guard.

Oracle SQL Server AWS RDS HA/DR Cloud Migration
2012 — 2018
Database Administrator III
Previous Employer

Managed multi-terabyte Oracle RAC clusters and SQL Server environments for a large-scale financial services firm. Implemented RMAN-based backup and recovery procedures, reducing recovery time objectives by 60%. Mentored junior DBAs and led quarterly performance review cycles.

Oracle RAC RMAN Performance Tuning Mentoring
2005 — 2012
Database Administrator
Previous Employer

Administered Oracle 10g/11g and SQL Server 2005/2008 databases in a mixed Windows/Linux environment. Developed automated monitoring and alerting scripts that reduced unplanned downtime by 45%. Designed and implemented the organization's first formal database change management process.

Oracle 11g SQL Server 2008 Automation Change Management
1999 — 2005
Junior / Mid-Level DBA
Early Career

Began career supporting Oracle 8i/9i databases, performing backups, schema management, and user administration. Developed strong foundations in SQL optimization, storage management, and database security practices.

Oracle 9i SQL Database Fundamentals
Featured Projects
// PROJ-001
Cloud Migration

On-Prem Oracle → AWS Aurora Migration

Led end-to-end migration of a 4TB Oracle database to AWS Aurora PostgreSQL using AWS DMS, achieving zero-downtime cutover and 35% cost reduction.

AWS DMS Aurora Oracle Schema Conversion
// PROJ-002
Architecture

Enterprise HA/DR Architecture Design

Designed and implemented a multi-region HA/DR solution for SQL Server using Always On Availability Groups with RPO < 5 min and RTO < 15 min.

SQL Server Always On DR Planning Multi-Region
// PROJ-003
Data Platform

AWS Redshift Data Warehouse Build

Architected and built a Redshift-based data warehouse ingesting data from 12 source systems via AWS Glue ETL, enabling self-service BI for the enterprise.

Redshift AWS Glue Data Modeling QuickSight
05 — Credentials
Education & Certifications
YEAR

Bachelor of Science — Your Degree

Your University

2024 ✓

AWS Certified Cloud Practitioner

Amazon Web Services

2024 ✓

AWS Solutions Architect — Associate

Amazon Web Services

In Progress

AWS SysOps Administrator — Associate

Amazon Web Services

Planned

AWS Developer — Associate

Amazon Web Services

Planned

AWS Solutions Architect — Professional

Amazon Web Services

Let's Connect

Available for senior DBA consulting, cloud architecture engagements, and solutions architecture roles. Let's build something robust together.