Jonathan Greifenberger

Own and lead the development of relationships with high profile AWS Clients. Assist customers with their cloud migration and adoption strategies and provide consultative guidance to ensure clients maximize their return on investment, and assist with Go-to-Market and co-selling opportunities.

Responsible for the sales engagement with enterprise firms to help identify and bring business value to their Big Data and Data Intensive initiatives. MapR delivers the industry's only converged data platform that integrates the power of Hadoop, Drill, and Spark with global event streaming, real-time database capabilities, and enterprise storage, enabling customers to harness the enormous power of their data. MapR is used by more than 700 customers across financial services, government, healthcare, manufacturing, media, retail and telecommunications. The MapR Converged Data Platform enables direct processing of files, tables, and event streams. Unlike "connected" environments that require complex integrations and orchestration, MapR's Convergred Data Platform offers a streamlined architecture that drives data intensive applications delivering real-time actionable insights.

Responsible for the overall global relationship between Oracle and Citigroup with a strong focus on high levels of client satisfaction and positive experience across all interactions with Oracle. Manage and co-ordinate engagement and successful execution of the Oracle sales teams from the various solution portfolios including cloud (IaaS, Paps, SaaS), software, support, services, systems and storage and Oracle's financial services solutions. Direct responsibilty for sale of Oracle software and cloud solutions as well as Oracle's suite of engineered systems solutions with the goal of growing the business and usage of the Oracle solution portfolio. Develop and execute current and multi-year Sales growth and retainment strategy across all lines of business CxO relationship engagement and development across multiple lines of business and disciplines Manage and drive to close large value and complex opportunities including contract and pricing negotiations. Manage a sales team, consisting of direct and matrix reports, responsible for Oracle's portfolio of cloud based and on-premise solutions - IaaS, PaaS, SaaS, Support, Consulting etc.

Account lead responsible for the sale of Oracle's portfolio of systems and infrastructure solutions to large financial institution. Development of large opportunities from identification to close, manage complex engagements, contract negotiations, development and implementation of sales strategy maintain leadership position within account and to grow install base.

Sales executive responsible for the direct sale of Sun Microsystems' product portfolio in the US as well as globally for the Citigroup Sales team. Direct sales management the international sales teams calling on the account to ensure success of the global team. Develop relationships with the Client's Region Technology Heads and key decision makers Responsible for development and co-ordination of global strategy and engagement model Grew sales from $27M to $76M in 3 years through direct engagement with the region sales teams - EMEA, APAC, Japan, LATAM.

Systems Engineer responsible for supporting the technical pre-sales effort. Running PoCs, customer briefings, Transfer knowledge to client and internal teams. Engage directly with Sun Engineering teams in support of customer requirements, beta programs and requests for enhancements. In 2002 Moved to Systems Architect role within Global Financial's team supporting the Citigroup team. Responsible for helping the client and the team support their infrastructure architecture requirements.

Senior Engineer responsible for manufacturing, assembly, and installation testing of new build undersea fiber optic networks including TAT-10, TAT-11, TAT-12, TAT-13, UNISUR, HAW-5, TPC-4, TPC-5, ITUR. Responsible for ship board testing during installation and in-station commissioning, certification and bring-up of systems. Managed team of engineers dispersed globally during the manufacturing, construction and installation phases of the project. Manage client relationshps during the manufacturing and installation phase of the project. Project value was between $150M - $1.2B.

Third Tier Unix support and engineering for internal AT&T Business Units. Provided support for the UNIX OS and engineering activities associated with the certification and support for new technologies to be used across AT&T business units.