A hands-on leader with broad experience in data science, product development and software engineering. I enjoy building innovative products and bringing them to market. Specialties: Data science, Hadoop, Big data, software engineering, engineering management, technology vision, search advertising, machine learning, data mining, web development, information retrieval, information security, recommendation engine, predictive models,

Director of Data Science @ Helping customers with their big data science initiatives From November 2012 to Present (3 years 2 months) EIR @ Big data strategy From September 2012 to November 2012 (3 months) Advisor @ data science consulting acting CTO From September 2012 to November 2012 (3 months) Advisor @ consulting From September 2012 to November 2012 (3 months) Advisor @ Data science consulting From July 2012 to November 2012 (5 months) VP of Engineering @ Nor1 is the technology leader in upsell solutions for the hospitality industry. Led engineering team (developers, QA, and operations) to deliver various product initiatives, including the PRiME algorithmic platform, revenue manager, PRiME UI and various front-end experimentats (A/B testing). From October 2010 to June 2012 (1 year 9 months) Director of Customer Solutions, Sponsored Search @ Led a team of engineers and product managers responsible for product solutions and tools for Yahoo!'s search advertising customer-facing teams, helping them improve advertiser ROI and publisher monetization. Integrated Hadoop into sales tools stack. From April 2009 to October 2010 (1 year 7 months) Director of Engineering, Sponsored Search @ Led an engineering team responsible for Yahoo!'s search advertising front-end serving systems. Initiated and developer the next-generation serving platform (SSFE) implementing ad selection, ranking, and pricing using advanced machine learning algorithms under low-latency constraints. From March 2008 to April 2009 (1 year 2 months) Technical Yahoo!, Sponsored Search @ Worked on various features of Yahoo!'s Panama search advertising system, including ranking, pricing, click modeling, budgeting, forecasting, filtering, and A/B testing. Led deployment of the new ad ranking model to major international markets and transition of CTR modeling to Hadoop. From September 2005 to March 2008 (2 years 7 months) CTO / Founder @ An enterprise security startup. Fund raising, customer interviews, product definition, and prototype clustering algorithm to identify user security roles. From January 2004 to August 2005 (1 year 8 months) Chief Architect @ A security startup focusing on security appliance for small and mid-sized businesses. From January 2003 to December 2003 (1 year) Founder & CTO @ A provider of machine-learning based document classification platform of corporate knowledge (acquired by Inktomi). From 1998 to 2003 (5 years) Captain @ From 1991 to 1997 (6 years)

M.Sc., Electrical Engineering @ Tel Aviv University From 1994 to 1997 B.Sc., Computer Science @ Technion - Israel Institute of Technology From 1987 to 1991 High School @ Ostrovsky From 1981 to 1987 Ofer Mendelevitch is skilled in: Big Data, Hadoop, R, Python, Machine Learning, Data Mining, Start-ups, Algorithms, Search Advertising, Product Management, Optimization, A/B testing, Data Science, Scalability, Strategy