Vitaly Grinberg

Tel No: 262-***-****

Email: acxgnr@r.postjobfree.com

Summary of Qualifications

Enterprise Performance Architect with expertise in delivering performance and capacity management solutions on virtualized distributed, mainframe, and massively parallel platforms.

Professional Experience

Kohl’s Innovation Center 2014 – Present

Performance Architect

* Provided leadership in implementing agile performance testing strategies designed to expose potential bottlenecks and failure points.

* Influenced adoption of technical solutions, strategies and design patterns across multiple teams and stakeholders for the array of merchandising applications as well as for mission critical applications such as POC, POS, Loyalty and Oracle RPAS.

* Provided infrastructure optimization across VMware/PowerVM platforms.

* Provided technical consulting and mentoring to team members on optimization techniques of infrastructure components including Oracle Coherence which was used by mission critical applications. Hotspots, bottlenecks and latency in Coherence were monitored by RTView Enterprise Monitor that also tracks other Oracle components (Database, WebLogic) and non-Oracle software such as TIBCO.

* Performed in-depth analysis (using Dynatrace and Exadata OEM) of production performance issues to pinpoint hotspot and opportunities for optimization.

* Closely worked with vendors in identifying preferable performance practices specific to Kohl's workloads.

* Closely worked with development teams in building a microservices based architecture on platforms that support virtualization, scale, availability and performance.

* Based on technical expertise, problem solving and decision making skills provided performance improvement solutions in the stressful war room environment.

Marriott International 2005- 2014

Technical Consultant/ Performance Architect

Responsible for architecting and implementing of private (Xen/Linux based) cloud solutions, troubleshooting and analyzing the root cause of performance issues, developing and implementing the infrastructure specific set of the best practices that resulted in high performance, high availability, massively scalable Marriott e-commerce site that experienced explosive revenue growth from $1 B to $8 B.

Duties included:

using and fine tuning the workload-aware (Tivoli ITCAM based) system of early warnings to avoid significant performance degradations and outages in Production

closely working with development teams to review architecture and design, suggesting tuning and configuration improvements for infrastructure components such as WebSphere, DB2, Oracle, Vignette, Oracle Coherence and Endeca (Oracle) before deployment in production, using anomaly detection technology applied to benchmark test results obtained from running HP Load Runner tests designed to detect the performance and availability issues in the new releases and upgrades

monitoring, pinpointing and fixing production performance bottlenecks across all layers of the software and hardware stack, including but not limited to front end servers, JVMs, GC, back end servers, DB layer, OS layer, DataPower, MQ layer, z/OS and Network layer using innovative byte code instrumentation technologies such as dynaTrace, (Quest/Dell Performasure) and Precise DB monitoring tool

maintaining and analyzing the historical database (Metron based) of key infrastructure performance metrics which were used for capacity planning studies and capacity planning presentations for senior management

Candle Corporation El Segundo, CA 1996 – 2004

Sr. Software Developer

Responsible for analytical modeling, bottleneck analysis, tuning, profiling and optimization of C, Java and C++ code that resulted in massive scalability of the company’s array of infrastructure performance monitoring products running on z/OS, AIX, HP-UX, AS/400, Solaris and Windows platforms.

Duties included:

analytical modeling and bottleneck analysis of company performance monitoring system components that resulted in optimizing C, Java and C++ code and enhancing the scalability of system components in mainframe and distributed environments

providing L3 support for company customers by advising on installation, configuration and tuning solutions, rapidly resolving escalated customer problems and writing best practices guidelines to the company knowledge database used by developers, customers, SEs and marketing personnel

Teradata/NCR El Segundo, CA 1990-1996

Consultant

Responsible for the performance analysis, tuning and scalability of the Teradata

massively parallel relational database.

Duties included:

analytical modeling, performance analysis and scalability tuning for Teradata major infrastructure components

application and query tuning to improve performance of the multi-user throughput for TPC-D decision support benchmark

performance enhancements for the Teradata massively parallel relational database interfaces to S/390 (z/OS) and VM systems.

Additional Career Experience

BLUE CROSS OF CALIFORNIA, Woodland Hills, CA

Senior System Programmer

COMPUTER SCIENCES CORPORATION, El Segundo, CA

Computer Scientist

Education

University of Moscow, Moscow, Russia, MS Mathematics/Computer Sciences

Professional and Community Affiliation

Professional Member of Association for Computing Machinery ACM), the world’s largest educational and scientific computing society.

US Citizen

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