Working as Data Scientist from past 10 years.
Excellent understanding of machine learning techniques and algorithms, such as k-NN, Naive Bayes, SVM, Decision Forests, etc.
Experience with common data science toolkits, such as R, Weka, NumPy, MatLab, etc {{depending on specific project requirements}}. Excellence in at least one of these is highly desirable
Great communication skills
Experience with data visualisation tools, such as D3.js, GGplot, etc.