Vadim K.

Vadim K.

Data Scientist. ML, R, SAS, Python, ETL Developer.

Moscow, Russia



What's the difference

I have 3+ years experience working with data.
ETL Developer: SQL, SAS DI, Talend, Oracle DB, GreenPlum DB, PostgrSql, Hadoop, Hive, Pig.
Data Scientist/Data Analyst: R, SAS, Python, Machine Learning, D3.js, Spark.

I have 4+ years previous experience on developing web applications using PHP, JavaScript, AJAX.
Databases: MySQL, Postgresql.
Frameworks: JQuery, Code Igniter.
CMS: MODx, Wordpress.

Vadim K. has added 11 portfolio pieces. Create an account to review them.

Work History & Feedback

Update Our Client Wordpress Website

Fixed Price $160
“Great work on time. Project went very smooth. Will definitely hire again.”


Need an expert WordPress programmer

6 hrs @ $20.00/hr
Earned $120
“Excellent work, right on time! I am looking forward to working with Vadim again.”


Jquery Programmer / MODX cms website implementation

52 hrs @ $16.00/hr
Earned $832
“Vadim was a great programmer from creating the CSS, and had excellent modx skills. Highly recommend!”


small cms website

Fixed Price $224
“This became quite a complicated job where my requirements for it changed very frequently as we got along but Vadim was very flexible with it, he made good suggestions to even improve the site. So very happy with the job delivered.”


Need PHP Website Copies, Pasted, Tested, Tweaked for NEW Site

19 hrs @ $15.56/hr
Earned $298
“Great work on this!!!! Project was done successfully, on time, ahead of time!”


Joomla Web Site Developer

Fixed Price $494
“Vadim did an excellent job on our project. There was nothing we asked that he was not able to do and he even recommended some solutions we hadn't thought of which were better than our initial thinking. He understood and followed our instructions well and in a timely manner. He completed the work on time with regular communication, follow-up and revisions. We're very happy with the results. We will work with him again.”


Technical Translation of SAS Code to Python, R, or PHP

31 hrs @ $20.00/hr
Earned $630
Job in progress

Ongoing R script development (JSON etc)

Fixed Price $270
Job in progress

Tests Taken
Name Percentile Score

Analytical Skills Test


CSS 2.0 Test


Data Interpretation Test


Data Sufficiency Test


HTML 4.01 Test


PHP5 Test


Python Test


Statistics Test