Open to opportunities

Deniz Günay

@denizgnay

I keep mission-critical enterprise applications stable, deployment-ready, and resilient across telecommunications and banking.

Turkey

Message

What I'm looking for

I'm looking to apply my enterprise application operations, production readiness, service continuity, and testing experience to protect high-availability services and deliver safe, reliable production changes.

I've supported mission-critical enterprise applications at Vodafone Türkiye, Vodafone Technology, Turkcell, and Turkish Halkbank across telecommunications and banking production environments.

At Vodafone Türkiye, I owned operations for Value Added Services and the Oracle Common User Repository LDAP platform hosting 22 million subscriber records. I coordinated production readiness, controlled deployments, go-live activities, major-incident response, vendor engagement, backup and recovery validation, and service continuity.

At Vodafone Technology, I deployed, integrated, and provided L2/L3 support for SMS, MMS, USSD, CUR, and other telecommunications platforms using Sun Solaris, UNIX, Oracle, and Oracle LDAP.

I've also supported IBM Mainframe banking systems and Turkcell's Mediation platform, while building hands-on testing capability across functional, regression, performance, integration, UAT, and production validation. I focus on safe production changes, operational risk reduction, high availability, and reliable business services.

Experience

Work history, roles, and key accomplishments

Senior Specialist – VAS & Third Party Services Management

Vodafone Türkiye

Jan 2011 - Feb 2018 (7 years 1 month)

Operational and technical owner for mission-critical VAS platforms, including Oracle CUR LDAP serving 22 million subscribers. Managed production readiness, deployments, incident response, and vendor coordination to ensure high availability and business continuity.

Application Operations Production Support Incident Management Problem Management Change Management Release Management Root Cause Analysis Manual Testing Regression Testing Smoke Testing Sanity Testing Performance Testing Exploratory testing LDAP SQL Pl SQL Vendor Management Stakeholder Management Business Continuity

System Support Engineer

Vodafone Technology

Dec 2005 - Jan 2011 (5 years 1 month)

Deployed, integrated, and provided L2/L3 production support for VAS platforms including SMS, MMS, and USSD. Managed Oracle LDAP-based CUR platform for 22 million subscribers, performing deployments, upgrades, and testing.

L2 L3 Support SMS LDAP Unix Oracle Database SS7 Sigtran Manual Testing Functional Testing Regression Testing Smoke Testing Sanity Testing Performance Testing Exploratory testing Integration Testing UAT Deployment Configuration software upgrades

System Engineer

Pinnet ITC Solutions / Lucent Technologies

Apr 2005 - Dec 2005 (8 months)

Implemented and configured Lucent LSMS VPN Firewall and VitalSuite network performance management solutions for enterprise customers. Provided post-sales support and managed network security, performance, and fault management.

Network Security Performance Management Fault Management Implementation Configuration Post sales Support VITALSUITE

System Administrator

Turkcell

Jun 1999 - May 2001 (1 year 11 months)

Managed daily operations of mission-critical Mediation platform in UNIX environment, ensuring billing data integrity from MSCs. Oversaw Comptel MDS and Ericsson Billing Gateway, developed shell scripts for automation, and led incident resolution.

Unix Shell Scripting Mediation Platforms Comptel Ericsson Billing Gateway X.25 Backup Recovery Incident Management Regression Testing Automation

System Programmer

Turkish Halkbank

Nov 1996 - Sep 1998 (1 year 10 months)

Supported IBM Mainframe production environments hosting core banking applications, performing CICS and MQ administration. Contributed to Y2K readiness and Client/Server migration projects, ensuring stable banking operations.

IBM Mainframe CIC Production Support Change Management Testing Y2K Continuity Planning Server Migration Technical analysis