Yenal Yavuz - Shiny R Development

Recommended expert

Hanover, Germany

Experience

Jun 2025 - Aug 2025

3 months

Implementation and mapping of regulatory requirements (CSRD, ESRS) in Shiny dashboards and backend functionalities
Design and development of data-driven modules in Shiny including ESG metrics and reporting templates
Integration of data sources (SQL, SAP HANA, APIs, CSV/Excel) using DBI, odbc, httr and readr
Creation of interactive visualizations with plotly, highcharter and DT (DataTables)

Sep 2024 - Dec 2024

4 months

Analyzing technical and organizational requirements for providing SAP data for Power BI and Shiny R dashboards
Evaluating data provisioning from SAP BW/4HANA as a basis for interactive dashboards to visualize production, delivery and quality metrics
Developing Power BI dashboards and training internal staff in Power BI usage
Extracting data from SAP HANA and other systems
Creating data models and concepts for SQL databases and SAP BW/4HANA objects
Designing and implementing automation solutions for data processing workflows using SparkR

Mar 2024 - May 2025

1 year 3 months

Design and implementation of custom algorithms in Python to support financial analysis and decision-making processes
Storing and modeling streamed data in a high-performance Exasol SQL database for analytical evaluation
Using advanced data analysis and machine learning techniques with PySpark to improve investment strategy performance
Using Python for algorithm development and implementation
Creating and maintaining comprehensive documentation for developed algorithms and workflows in Jira and Confluence
Continuous monitoring and maintenance of algorithms to ensure consistent performance and reliability

Jun 2023 - Apr 2024

11 months

Conducting comprehensive training in the R programming language for internal staff to improve their data analysis and programming skills
Guiding and supporting staff in project implementation, especially in using R for data-related tasks
Creating and presenting weekly status reports on project progress to the client's management
Coordinating and monitoring project deliverables to ensure all milestones are met on time and according to quality standards
Collaborating closely with various departments to ensure training and project goals align with overall company objectives
Using ShinyProxy for containerizing Shiny apps (Dockerizing ShinyApps)
Training internal staff in Shiny R
Training internal staff in R programming with dplyr and Tidyverse
Training internal staff in version control with Git

Mar 2023 - Feb 2024

1 year

Attending ERP system Miles training in Ghent, Belgium
Working in an internal Sofico development team to implement Miles at an automotive bank
Agile working using Scrum
Modeling processes, operations and tables in the Miles configuration system
Developing custom SQL queries in the Miles software system to configure and adapt data processes based on specific requirements
Providing professional support in planning and executing cut-over processes for a smooth transition to the new system
Troubleshooting and resolving defects
Creating user stories based on client requirements
Documenting functional requirements for the acceptance process
Defining necessary test cases for handover to the test team

Jan 2021 - Sep 2022

1 year 9 months

Hanover, Germany

Planning, execution, and documentation of data science, data migration, and transformation projects
Implementing data science project requirements in agile teams using technologies like Java, Shiny R, and Python
Developing a Java tool for migrating data from a source system to a target system
Operational support of the Java tool in a CI/CD pipeline environment
Using Git and GitHub for code reviews and version control
Working in an agile setup following Scrum

Nov 2019 - Dec 2020

1 year 2 months

Hanover, Germany

Supporting the business project management of a global ERP project
Conducting training for a newly introduced SAP test software and supporting business users
Creating SAP test cases, tracking timely execution, and providing support in all related plants
Independently tracking project phases and successfully guiding the pilot rollout
Performing R programming in the subproject
Developing and designing an interactive data analytics dashboard in Shiny R for global logistics centers and factories in the commercial vehicle supplier division
Extracting data using Oracle PL/SQL queries from SAP R/3 databases
Analyzing large datasets with Spark