Open to opportunities

aamer ahmed

@aamerahmed

I build reliable Linux and cloud infrastructure for mission-critical enterprise systems.

At Medline, I administer 1,000+ SAP-dominant Linux servers across on-premises and Azure environments, maintaining 99.9% availability. I led core-application migrations to Azure that reduced data-center footprint by 40% and projected $1.2M in annual savings.

Previously at Discover Financial, I supported 2,000+ Unix servers across three data centers and led a seven-engineer team delivering automation with Ansible Tower and Chef. My work reduced manual patching effort by 70%, accelerated Red Hat patch deployment from days to hours, and strengthened security compliance across 1,200+ RHEL servers.

Across banking, healthcare, pharmaceutical, and retail environments, I’ve delivered high-availability SAP, Oracle RAC, GPFS, AIX, storage, and disaster-recovery solutions. I focus on automation, reliable migrations, observability, security remediation, cost optimization, and sharing operational knowledge with engineering teams.

Experience

Work history, roles, and key accomplishments

Current

Senior Linux & Cloud Infrastructure Specialist

Current

Medline

Oct 2023 - Present (2 years 10 months)

Administer 1000+ mission-critical SAP-dominant Linux servers across on-premises and Azure, ensuring 99.9% availability. Lead Azure migrations, NFSv4.1 upgrades, and RHEL LEAPP in-place upgrades, reducing costs and improving performance.

RHEL SLES Azure Ansible Terraform Salt NFS NetApp SUSE Manager Uyuni Red Hat Satellite AppDynamics Datadog Crowdstrike Illumio BASH Python SAP Hana CVE RBAC Azure Active Directory

Lead Unix Engineer

Discover Financial

Sep 2014 - Sep 2023 (9 years)

Led a team of 7 engineers supporting 2000+ Unix servers, driving automation with Ansible Tower and Chef. Managed Red Hat Satellite lifecycle, GPFS storage clusters, and Centrify-AD integration, reducing patching effort by 70%.

RHEL Ansible Chef Red Hat Satellite Centrify Active Directory GitHub BASH Python NFS SMB

AIX System Specialist

UBS Bank

Jan 2012 - Dec 2014 (2 years 11 months)

Supported dual data centers for global banking platforms, managing 300+ AIX LPARs. Migrated AIX 5.2/5.3 to 6.1, implemented dual VIO servers, and managed SAN storage for Oracle RAC and SAP.

LPAR VIO Brocade SAP Nim Live Partition Mobility

Unix System Administrator

CVS Pharmacy

Jan 2011 - Dec 2012 (1 year 11 months)

Provided 24/7 production support for HACMP clusters hosting pharmacy applications, achieving 99.99% uptime. Automated tasks with shell scripting and cron, saving 10+ hours weekly.

Shell Scripting

Unix Build Admin

Glaxo Smithkline Pharmaceuticals

Jan 2010 - Dec 2011 (1 year 11 months)

Built a disaster recovery environment replicating UK data centre to US, achieving RPO of 10 minutes for SAP R/3. Configured HACMP clusters and implemented NetApp SnapMirror for data replication.

SAP LPAR Nim NetApp SnapMirror Brocade

Cloud Migration Strategy (AWS – Planning Phase)

Discover Financial

Led Linux infrastructure assessment for migrating 2000+ Unix servers to AWS, defining architecture and migration approach. Produced runbooks and rollback strategies, presenting roadmap to leadership.