Efthymios K.
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R / Shiny App Developer / Data Analyst / Statistician

I graduated from the University of Macedonia, getting my degree in Finance, having acquired knowledge in various economics fields such as Finance, Statistics, Macroeconomics, and Marketing. I also graduated from the Master Program of Business Informatics of the Aristotle University of Thessaloniki. Last October, I completed my MSc in Complex Systems and Networks, in which I made heavy use of R to represent graphically statistical models and complex networks. My courses have focused on various specialist tools such as Business Intelligence, Data Analysis, Statistical Programming, creating Database Systems, and simulating economic models. These have helped me broaden my knowledge while showing me the diverse side of Computer Science combined with Economic Sciences, which I find fascinating. Currently, I work as BI Analyst in Carrie Beam Consulting and Alta Media Inc. I have also co-operated with Alpha Architect LLC, Firmographs LLC, DataCurry Inc., and R-exercises.com as a freelancer with a specialization in data visualization and statistical modeling projects using R/shiny, Qlk Sense, Tableau, and Microsoft BI via Upwork. As an author for R-exercises, I have published series of exercises and tutorials related to R packages like shiny, ggplot2, ggvis, Rmarkdown, Machine Learning methodologies, etc. As a person, I consider myself a perfectionist and passionate about precision and order. Attached you can find URLs of some of my Shiny projects. There are only parts of them that I had clients' permission to deploy and use as a portfolio.
Work history

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  • Qlik Sense
  • Statistical Analysis
  • Exploratory Data Analysis