About

Hi I’m Yannis, an experienced Project Manager, an passioned Data Analyst and a Lifelong Learner.

Skills

  • Data Verification & Cleaning
  • Data Visualization (ggplot, Matplotlib, Seaborn)
  • Advanced knowledge of R
  • Advanced Knowledge of Python (NumPy, Pandas)
  • Knowledge of SQL
  • Machine Learning (quite fluent on scikit-learn)
  • Jupyter Notebook, R Studio, Spyder, Markdown, Git version control framework.

Recent Projects

Fraud Detection Using Machine Learning

  • Deployed Python and Scikit-learn for fraud classification.
  • Evaluated the performance of several popular classifiers.
  • Otimized the hyperparameters of the best performing algorithm.

link to the project

Exploring Uber Demand in NYC

  • Performed Data Wrangling and Exploratory Data Analysis on Uber ridership for the area of NYC.
  • Concluding to the main factors that affect ridership.
  • Developed a forecasting model that explains 95% of the variance.

link to the project

OpenStreetMap Improvements

  • Assessed the quality of OpenStreetMap data for the center of Singapore.
  • Cleaned a dataset of 476,842 records in XML format using Python and SQL.
  • Corrected 1,019 entries of invalid street names, postcodes or amenities.

link to the project

Work Experience

Niometrics - Senior Project Manager | Data Analytics

Singapore | November 2015 - February 2017

  • Conducted requirement analysis meetings, and data mapping sessions to understand business needs.
  • Coordinated data analysis, design, and information flow, of ad-hoc reports to the customers.
  • Delivered Data Analytics Projects for two major Mobile Network Operators in the Asia Pacific region.

GLOBO PLC - Senior Presales Engineer

Athens, Greece | November 2012-October 2015

  • Led a team of 3 Presales consultants
  • Responsible to prepare and manage Mobile Offerings - on premise & cloud (Mobile Device Management, Mobile Application Development Platforms, Enterprise Mobility customized products) in international customers (mainly in Mobile Operators).
  • Initiated and managed large mobility project assignments, (from initial consultancy to live execution).
  • Manage and supported different teams during projects lifecycle (both from customers side and the company).
  • Solutions demonstrations and technical presentations to high-profile potential customers and partners.

Coursera / University of Maryland - Community TA

Remote | June 2015 - September 2015

  • Provided academic support to the students helping them understand the core concepts of the course.
  • Helped students understand the syllabus, grading policies, course schedule, etc.

GLOBO PLC - Technical Project Manager

Athens, Greece | September 2010 - October 2012

  • Responsible for mobile Cloud offerings (CitronGO!, GO!Social).
  • Managing integration with Mobile Operators - Biling and Provisioning systems
  • Successfully managed 14 international projects (mainly in Europe, Middle East, APAC region).
  • Data management and visualization of users data for clearance, reconciliation and reporting purposes (signed users, concurrent users, renews, etc).
  • Managing mobile user behavioral data through Mobile Operators cloud offerings

Education

Nanodegree on Data Analytics

Udacity - Ongoing
(co-created by Facebook & MongoDB)

Specialization Certificate on Cybersecurity

University of Maryland / Coursera- 2015

MEng on Production Engineering & Management

Technical University of Crete - 2005