Nikos Kastrinakis, Developer in Athens, Greece
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Nikos Kastrinakis

Verified Expert  in Engineering

Bio

Nikos is a self-motivated data professional who enables businesses to make better decisions using data. He has built high-performing business intelligence teams and delivered financial services and entertainment solutions for various-sized companies. Nikos has worked closely with people from across the business, from the board of directors to product teams, bridging the gap between technology and business.

Portfolio

Orfium
Tableau, Snowflake, Metabase, Stakeholder Management, Data Analytics...
Chenavari
Data Analytics, Risk Management, Hedge Funds, Statistics...
PwC UK
Tableau, SQL, Stakeholder Management, Business Analysis, Databases...

Experience

  • Data Analytics - 10 years
  • Stakeholder Management - 10 years
  • Tableau - 10 years
  • Business Intelligence (BI) - 10 years
  • SQL - 10 years
  • Strategy - 9 years
  • Knowledge Management - 8 years
  • Team Management - 5 years

Availability

Part-time

Preferred Environment

Tableau, SQL, Snowflake, Amazon Web Services (AWS)

The most amazing...

...initiative I've led is setting up a self-service analytics capability in a technology startup, empowering business individuals to analyze their data.

Work Experience

Director of Business Intelligence

2019 - PRESENT
Orfium
  • Developed complex analytics applications in Tableau to visualize internal and external stakeholders' key metrics and KPIs using hundreds of millions of raw data points.
  • Acted as the thought leader and primary driver of the data-driven decision-making mission.
  • Built a high-performing business intelligence team with eight business intelligence analysts from scratch.
  • Monitored the delivery of the team's high-level roadmap and handled identified potential threats.
  • Supervised and evaluated business intelligence managers and architects and facilitated their professional growth.
  • Improved the team's existing processes and toolkit by following global trends.
  • Served as a member of the data governance committee and contributed to the data culture.
  • Conveyed hiring needs to the research and development leadership and monitored the hiring plan execution.
Technologies: Tableau, Snowflake, Metabase, Stakeholder Management, Data Analytics, Business Intelligence (BI), Team Management, Mentorship & Coaching, Best Practices, Strategy, Hiring, Data-driven Decision-making, Business Analysis, SQL, Databases, Knowledge Management, Data Governance, Data Strategy, Data Analysis, Dashboards, Dashboard Design, Amazon Web Services (AWS), Data Pipelines, Datasets, Data Build Tool (dbt), Data Visualization, Forecasting, Visual Storytelling, User Interface (UI), Excel 2016

Business Intelligence Team Lead

2015 - 2017
Chenavari
  • Managed the business intelligence flow for every department and team, including senior management, risk, portfolio management, and analytics.
  • Reported directly to the CΤO, leading the design, development, and implementation of new reports and visualization dashboards to optimize the company's data assets.
  • Kept the company up to date regarding all ongoing data-related issues, including gathering, sorting, and delivering data.
Technologies: Data Analytics, Risk Management, Hedge Funds, Statistics, Business Intelligence (BI), Stakeholder Management, Business Analysis, SQL, Databases, Knowledge Management, Mentorship & Coaching, Team Management, Data Analysis, Datasets, Dashboards, Dashboard Design, Data Visualization, Data Cleansing, Data-driven Decision-making, Forecasting, Visual Storytelling, User Interface (UI), Excel 2016

Senior Associate Consultant

2012 - 2015
PwC UK
  • Contributed to the Branch DNA Analysis delivery, which was recognized as the annual PwC UK's data and analytics top proposition and rewarded the PWC's Compelling Proposition Award for 2014.
  • Built a data analysis tool that reviews current working patterns and behaviors to help visualize and optimize future performance. The tool was created for a large international retailer and delivered in Tableau.
  • Delivered a spend analysis tool as part of a team to one of the world's largest airlines across Oracle, SAP, and other ERP systems. It covered a spend of over £5 billion and delivered spend visibility and procurement insight.
  • Provided analytics and contributed to business modeling, data insight, and reporting for the company's key clients.
  • Developed several skills related to data quality, big data, financial and business modeling, survey collection, reporting, and data visualization.
  • Created tools in Microsoft Excel that automated processes, reducing the effort needed to complete them and saving time and money.
Technologies: Tableau, SQL, Stakeholder Management, Business Analysis, Databases, Knowledge Management, Data Visualization, Data Cleansing, Data-driven Decision-making, Data Analytics, Visual Storytelling, Data Analysis, Dashboards, Datasets, User Interface (UI), Excel 2016

Experience

Spend Analysis Tool

Built a spend analysis tool in Tableau and a data visualization tool to help one of the largest airlines better understand and manage their spending. The data was stored across multiple Oracle, SAP, and other ERP systems and covered a spend of over £5 billion. The project provided the client with spend visibility and procurement insight, and the tool was used to drive procurement efficiencies as part of a global change program. My role involved collating data and supplier cleansing, coding, and classifying.

COVID-19 Impact on Revenue

Developed a report showcasing the impact of COVID-19 on the client's revenue and used past data to generate two forecasts covering potential revenue trends. The report compared their revenue data and the potential revenue without the impact of the COVID-19 pandemic over the same period. The client then used this analysis in presentations for their board of directors and at the town hall.

Education

2011 - 2012

Master's Degree in Information Systems and Management

Warwick Business School (WBS) - Coventry, UK

2006 - 2011

Bachelor's Degree in Informatics and Telecommunications

National and Kapodistrian University of Athens - Athens, Greece

Skills

Tools

Tableau, Excel 2016

Languages

SQL, Snowflake

Paradigms

Business Intelligence (BI), Best Practices

Storage

Databases, Data Pipelines

Platforms

Amazon Web Services (AWS)

Other

Business Analysis, Stakeholder Management, Data Analytics, Data Cleansing, Data Visualization, Dashboard Design, Visual Storytelling, Data Analysis, Dashboards, Datasets, Knowledge Management, Innovation, Team Management, Mentorship & Coaching, Strategy, Data-driven Decision-making, Forecasting, User Interface (UI), Metabase, Computer Science, Coding, Programming, Statistics, Hiring, Risk Management, Hedge Funds, Data Governance, Data Strategy, Data Build Tool (dbt)

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