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Efthymios K.

Efthymios K.

Thessaloniki, Greece
Job Success
Top Rated

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 in 2016. 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.
Rating is 5 out of 5.
5.00 Jul 23, 2022 - Oct 16, 2022

"Makis is very competent with Shiny. His billing is fair and honest. Makis is attentive to detail and is flexible. The project changed several times during development. Makis was accomodating and prompt to comply with changing needs. I enjoyed working with Makis and I have no reservations about recommending him to others. The contract with Makis was completed sucessfully."

Private earnings
Apr 29, 2022 - Oct 14, 2022

No feedback given

Private earnings
Nov 16, 2021 - Oct 14, 2022

No feedback given

Private earnings
Dec 9, 2021 - Oct 13, 2022

No feedback given

Private earnings
Nov 16, 2020 - Oct 13, 2022

No feedback given

Private earnings
Rating is 3.9 out of 5.
3.90 Dec 22, 2021 - Oct 4, 2022

"Makis was very responsive. This is highly valued. The quality of the work lacked a bit. The code could have been written better and more questions posed in the first place to understand the data. Although I have to admit that the task was quite complex and he tackled it."

Private earnings
Rating is 5 out of 5.
5.00 Feb 10, 2021 - Sep 30, 2022

"Makis is an expert in R, specializing in data manipulation and visualization. Strong communication skills and adherence to deadlines. We highly recommend him for any data-related projects."

Private earnings
Rating is 4.7 out of 5.
4.70 Jan 26, 2022 - Apr 10, 2022

"I had the pleasure of working with Makis. He did a great job quickly and cleanly, and I respected his honesty when there was some part of the work beyond his expertise and he informed me that he couldn't deliver this part.  I recommend him if you have any tasks with Shiny in R or R in general."

Private earnings
Rating is 5 out of 5.
5.00 Mar 17, 2022 - Mar 21, 2022

"Well done. Excited to work together again."

Private earnings
Rating is 5 out of 5.
5.00 Mar 1, 2022 - Mar 10, 2022

"Nice work!"

Private earnings
Efthymios K. has more jobs. Create an account to review them

Skills

Efthymios K.

Efthymios K.

Thessaloniki, Greece
Job Success
Top Rated
159
Total Jobs
3,577
Total Hours

View profile

R / Shiny App Developer / Data Analyst / Statistician

Specializes in
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 in 2016. 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.
Rating is 5 out of 5.
5.00 Jul 23, 2022 - Oct 16, 2022

"Makis is very competent with Shiny. His billing is fair and honest. Makis is attentive to detail and is flexible. The project changed several times during development. Makis was accomodating and prompt to comply with changing needs. I enjoyed working with Makis and I have no reservations about recommending him to others. The contract with Makis was completed sucessfully."

Private earnings
Apr 29, 2022 - Oct 14, 2022

No feedback given

Private earnings
Nov 16, 2021 - Oct 14, 2022

No feedback given

Private earnings
Dec 9, 2021 - Oct 13, 2022

No feedback given

Private earnings
Nov 16, 2020 - Oct 13, 2022

No feedback given

Private earnings
Rating is 3.9 out of 5.
3.90 Dec 22, 2021 - Oct 4, 2022

"Makis was very responsive. This is highly valued. The quality of the work lacked a bit. The code could have been written better and more questions posed in the first place to understand the data. Although I have to admit that the task was quite complex and he tackled it."

Private earnings
Rating is 5 out of 5.
5.00 Feb 10, 2021 - Sep 30, 2022

"Makis is an expert in R, specializing in data manipulation and visualization. Strong communication skills and adherence to deadlines. We highly recommend him for any data-related projects."

Private earnings
Rating is 4.7 out of 5.
4.70 Jan 26, 2022 - Apr 10, 2022

"I had the pleasure of working with Makis. He did a great job quickly and cleanly, and I respected his honesty when there was some part of the work beyond his expertise and he informed me that he couldn't deliver this part.  I recommend him if you have any tasks with Shiny in R or R in general."

Private earnings
Rating is 5 out of 5.
5.00 Mar 17, 2022 - Mar 21, 2022

"Well done. Excited to work together again."

Private earnings
Rating is 5 out of 5.
5.00 Mar 1, 2022 - Mar 10, 2022

"Nice work!"

Private earnings
Efthymios K. has more jobs. Create an account to review them

Skills

As Needed - Open to Offers
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