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At Experience Data we are solving complex business issues, bridging the gap between people and technology, for companies that put people first.

At Valid, we believe that the successful implementation of Information & Communication Technology enables our clients to excel, making them true leaders in their respective fields. This is how we live up to our motto, “Stay Ahead”.Stay Ahead is not only our promise, it is also our mentality. Each day, more than 300 experienced professionals, operating from our offices in Eindhoven, Maastricht and Utrecht strive to develop their expertise and realise business benefits for our clients.Main activities: Creating dashboards in Power BI, creating predictive models in Azure ML, Data analytics.Data science blog: https://blog.valid.nl/author/agis-christopoulosExposed to a range of tools like Microsoft SQL Manager studio, R, Power BI, Excel, Azure Machine Learning studio

FREO, part of Rabobank, wants to analyze applicants behavior and predict who is more likely to get the loan. I am responsible for analyzing application data and building the predictive model in Azure ML. From business and data understanding to data preparation, modeling and data presentation in a nice, meaningful way using Power BI.- Prepare data for analysis in SQL & R- Identifying trends, correlations within data using R- Build predictive model in Azure ML- Visualize results building dashboards in Power BI

To ensure compliance with General Data Protection Regulation (GDPR), VodafoneZiggo is executing a comprehensive Data Governance program. VodafoneZiggo needs to know what personal data types reside in what part of the organization, who has access, where is the data coming from/going to, how the data flows are interacting with each other and whether the personal data is secured.As data scanning specialist, me and my team are responsible for optimizing a scanning tool to automatically identify what personal data exists in which system.

Koninklijke Visio is using a current report which is based on Excel with various datasets that draw data from the Visio data warehouse. The refreshing of this report currently takes lots of actions and time and it is prone to error. Optimizing this process to simply, quickly and correctly update the data is the basis for the outlined solution. In that way we eliminate the factor of mistakes.I am responsible for connecting Power BI directly to Visio's data warehouse and build the new reports and dashboard.

Translation of business needs into data science solutions:- Unstuctured & structured data extraction and transformation- Both exploratory and confirmatory approaches of data analysis- Application of advanced analytics and visual exploration of data- Interpretation and communication of business insightsData quality check and data validationExposed to a range of tools like Oracle SQL Developer, R, Tableau, Microstrategy, Excel

- Composed the specifications of Risk Models and their Data Flows between systems- Created the Data Flow Charts of Risk Models/Tools- Updated existing documentation- Prepared for internal Policy Testing of a sample of the risk models- Facilitated the responsible parties to take action by conducting interviews, requesting documentation reviews or additional information etc.

SQL scripting, data visualization, ad-hoc analysis and creation of dashboards using Tableau (visualization software).Analyze and work with big data.Exposed to a range of tools like IBM Netezza database,SQL Developer,Tableau software and Excel.Data quality check and data validation.Assisting Business Analytics team with day to day/adhoc work.Helping with testing in different areas: ETL, Dashboards, SQL queries.

· Gathering information· Data analysis· Collection and evaluation of statistic data.. Ad-hoc analysis