Gururaghav Gopal is presently working as a risk management consultant in a start-up. Previously, he worked at Paterson Securities as an quant developer/trader consultant .He has also worked as a data science consultant and was associated with an e-commerce organization. He has been teaching graduate and post-graduate students of VIT University, Vellore, in the areas of pattern recognition, machine learning, and big data. He has been associated with several research organizations, namely IFMR and NAL, as a research associate. He has also reviewed Learning Data Mining with R, Packt Publishing and has been a reviewer for a few journals and conferences.

He did his bachelor's degree in electrical and electronics engineering with a master's degree in computer science and engineering. He later did his course work from IFMR in financial engineering and risk management, and since then, he has been associated with the financial industry. He has won many awards and has a few international publications to his credit.

He is interested in programming, teaching, and doing consulting work. During his free time, he listens to music.

He can be contacted for professional consulting through LinkedIn at in.linkedin.com/in/gururaghavg.

Zhuo QL (a.k.a KDr2 online) is a free developer from China who has about 10 years' experience in Linux, C, C++, Java, Python, and Perl development. He loves to participate in and contribute to the open source community (which, of course, includes the Julia community). He maintains a personal website at http://kdr2.com; you can find out more about him there.

Dan Wlasiuk is the author of various Julia packages including TimeSeries and Quandl, and he is also the founder of the JuliaQuant GitHub organization of quantitative finance related packages.