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David Tijerina is an experienced engineering leader who has held various titles in companies such as Polly, SoundSignal LLC, Apptio, Amazon, HP, Opsware, iConclude, Network Commerce, Microsoft, and the United States Geological Survey. David has a strong background in engineering, product development, and leadership, with a focus on machine learning, data-driven products, and web applications. Their most recent role as Head of Engineering at Polly showcases their expertise in leading engineering teams to deliver high-quality products and insights to customers.