Arkadi A.

Arkadi A.

Mentor
5.0
(501 reviews)
US$19.00
For every 15 mins
880
Sessions/Jobs
ABOUT ME
#1 R & Shiny & Excel Expert, former Investment Banker
#1 R & Shiny & Excel Expert, former Investment Banker

Senior Consultant at the World Bank

https://arkadi.me/

Microsoft Excel: over a decade of experience

R & Rstudio: Tidyverse | Shiny | Data Visualization: Charts and Tables | Functional Programming | RMarkdown | Web Scrapping | Email Parsing | R & SQL | Cloud Computing | Multithreading with R | REST API with plumber or RestRserve | AWS EC2, Lambda, RDS | Linux: Ubuntu, Redhat | Docker | Github | Automated Reporting Excel, Word, PowerPoint, PDF | Automated Emails | CronJobs |

Dutch, French, German, Russian, English
Yerevan (+04:00)
Joined April 2019
EXPERTISE
10 years experience | 190 endorsements
Main packages: tidyverse & data.table Reporting: openxlsx, officer, flextable, tableHTML, kableExtra, AWS Solutions: API with R, Lambda w...
Main packages: tidyverse & data.table Reporting: openxlsx, officer, flextable, tableHTML, kableExtra, AWS Solutions: API with R, Lambda with R
RStudioRmarkdownOfficer
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RStudioRmarkdownOfficer ggplotdplyrTidyverseR
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10 years experience | 10 endorsements
10 years experience | 35 endorsements

REVIEWS FROM CLIENTS

5.0
(501 reviews)
Rija R
Rija R
October 2024
Arkadi was fantastic. He solved my issue in about 20 mins. I would def recommend him! Very knowledgeable and reliable.
Rógvi í stórustovu
Rógvi í stórustovu
April 2024
Extremely efficient.
Aimal Arsalla
Aimal Arsalla
April 2024
Fantastic resource who went above and beyond to assist
Sylvie Borau
Sylvie Borau
November 2023
Excellent skills in R studio and excellent communication skills. Very smart, patient, and super clear. The best!
Aung Ye Kyaw
Aung Ye Kyaw
November 2023
Arkadi is informative and finished the project in the most efficient manner. highly recommend.
Brooke C
Brooke C
September 2023
Arkadi is highly proficient with over 800 tutoring sessions and real-world experience. With his professional background, he still finds a way to teach information that is understandable to a novice. He also works quickly in problem assessment and executing efficient code and results.
Th atsit
Th atsit
August 2023
Always patient, helpful, dedicating...HIGHLY Recommended!
Maria Bermudez
Maria Bermudez
August 2023
Arkadi is always excellent. He makes things clear and easy to understand.
Lisa Williams
Lisa Williams
June 2023
Wonderful working with Arkadi! Fast, efficient, expert!
Wade Sedgwick
Wade Sedgwick
May 2023
Arkadi is better than I could have imagined, he was very helpful with making my shiny app and helped me learn a lot as well. I had a workshop on shiny apps a few months ago and it was a good baseline but learning from Arkadi brought me to the next level. Highly recommend, he knows exactly what he is doing and how to get around issues and bugs that come up. I will be continuing to work with him over the next few weeks to continue to get help developing my shiny app.
EMPLOYMENTS
Software Development Consultant
Longs Peak Advisory Services
2019-04-01-Present

• Created and currently maintain a suite of webtools, enabling accurate performance measurement of over 200 mutual funds and hedge fun...

• Created and currently maintain a suite of webtools, enabling accurate performance measurement of over 200 mutual funds and hedge funds across the US. The tools automate the generation of GIPS-compliant reports, a critical regulatory requirement.

• Automated the primary reporting process, optimizing the code to minimize human intervention and enhance efficiency. The automated process allowed the company to scale rapidly while maintaining accuracy.

• Constructed a complex backend machine that processes millions of rows of data to compute over 40 financial performance metrics, achieving 100% accuracy. Integrated robust data cleaning and wrangling processes to ensure data integrity and accuracy.

Linux
R
Docker
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Linux
R
Docker
Shiny
AWS
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Consultant
Independent
2014-01-01-Present

Reporting and verification tools, automation of complex business systems.

Worked on over 50 projects in the fields of finance, d...

Reporting and verification tools, automation of complex business systems.

Worked on over 50 projects in the fields of finance, data science, pharma, sensory science, sales analytics, and other.

SQL
R
Excel
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SQL
R
Excel
Shiny
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Data Scientist - Head of Business Intelligence
Aigora
2019-09-01-2022-07-01

• Delivered premium work exclusively for Fortune 500 clients, showcasing the ability to meet rigorous standards and deliver customized...

• Delivered premium work exclusively for Fortune 500 clients, showcasing the ability to meet rigorous standards and deliver customized solutions.

• Implemented a scalable cloud infrastructure enabling efficient production-level codebase deployment and expanding client services.

• Developed complex engineering solutions, such as optimizing code for testing and production phases and improving speed by leveraging Docker container technology

• Developed and implemented R and R Shiny-based solutions to create dashboards and API solutions for clients, enabling them to access and visualize complex data in user-friendly formats.

• Launched API solutions with AWS Lambda for internal use, allowing teams to efficiently run complex models on demand.

• Created modular code and R packages to ensure the scalability of solutions, enabling efficient code reuse and extension for evolving client needs.

Python
Linux
R
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Python
Linux
R
Docker
Shiny
AWS
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PROJECTS
Senior Consultant at the World Bank
2022
Lead R Programmer: Carbon Pricing Modelling
Lead R Programmer: Carbon Pricing Modelling
R
Excel
Shiny
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R
Excel
Shiny
AWS
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