A data engineer uses data to find patterns and extract significant insights for industry sectors like advertising/marketing, security/fraud detection, and finance. The data engineer works to process very large data sets, or Big Data. With the ever expanding amount of new data created from smart devices, web, mobile and social media, finding patterns, creating data-driven decision making helps companies develop business strategies. Job responsibilities include creating large and complex data sets and databases, systems administration, programming, software development, and modeling. Note: The closest detailed job profile and earnings data was found under the job title, Data Warehousing Specialist.