Juan Luis Herrera Cortijo
Drop Here

Juan Luis Herrera Cortijo

Data Scientist


Vigo, Spain


Do you have some question that requires a statistical or machine learning answer? No problem. As a data scientist with 15 years of experience, I have the technical knowledge and the communication skills needed to solve your problem and, most important, give an answer that you can apply to your field of interest. What I offer to you is a full data analysis/machine learning stack, including: - Getting and organizing your data. - Selecting the most relevant statistical or machine learning technique for your case. - Applying the technique to your data. - Writing a report that explains every step taken and makes a interpretation ... moreof the results. All written with enough technical detail, but that doesn't require a depth statistical knowledge to follow. - Assistance in applying the results to your specific field. I can do all this using any or several of the following: R, MATLAB, Python, MySQL. Everybody can apply an out of the shell statistical algorithm to some benchmark data. But I'm an expert in the tricks needed to apply those algorithms to real data. less

Juan Luis Herrera Cortijo has added 5 portfolio pieces. Create an account to review them.

Work History and Feedback

  • Jul 2015 - Aug 2015

    Statistician Needed For Unusual Project
    This was a 72 hour long contract which went perfectly. Juan provided the expertise we needed for a data analysis and report writing project. I would hire him again and highly recommend him for data analysis work.
    74 hours
    $44.44 / hr
    $3,266.34 earned

  • Oct 2013 - Mar 2015

    Matlab development - related to file manipulation

    No feedback given

    7 hours
    $25.56 / hr
    $187.44 earned

  • Oct 2012 - Mar 2015

    Basic MATLAB programming and Concrete design

    No feedback given

    $95.50 earned
    Fixed Price

  • Jan 2015 - Feb 2015

    Porting Excel and Tableau Model to R and Shiny
    Juan went above and beyond all expectations for this project. He is highly skilled, communicative, and a great person to work with. I cannot recommend him enough.
    67 hours
    $25.56 / hr
    $1,721.04 earned

  • Jan 2014 - May 2014

    Product Matching
    Juan has been outstanding to work with, communication, dedication, quality. I will for sure hire again, and will recommend him to everyone that needs a dedicated, clever data guy :)
    Freelancer's Response
    Thanks Nicolai for your kind words. I'm looking forward to work with you again too.
    $1,911.11 earned
    Fixed Price

  • Jan 2014 - Mar 2014

    Python Programmer

    No feedback given

    $225.96 earned
    Fixed Price

  • View More (5)

Juan Luis Herrera Cortijo has more jobs to show. Create an account to review them.


Name Score (out of 5) Time to Complete
Data Sufficiency Test 3.00 Top 20% 23 mins
Spanish Word Usage Test 4.60 Top 20% 8 mins
Spanish Sentence Structure Test 3.40 Above Average 20 mins
Statistics Test 3.75 Top 30% 16 mins
Spanish Vocabulary Skills Test 4.90 Top 30% 8 mins
Python Test 4.10 Top 20% 40 mins
Data Interpretation Test 3.55 Top 20% 38 mins
English To Spanish Translation Skills Test 4.90 Top 20% 13 mins
Spanish Spelling Skills Test 4.75 Above Average 5 mins
MySQL 5.0 Test 3.10 Above Average 20 mins
U.S. English Basic Skills Test 4.50 Top 10% 22 mins
English Vocabulary Test (U.S. Version) 4.10 Above Average 17 mins
What's the difference?

Work History

100% Job Success
953 hours worked
26 jobs


As Needed - Open to Offers
24 hrs response time

Search for others