Gregory Tsado
Dublin
Summary
Results-driven data professional with over five years of experience in the media and consulting industries, specializing in data science and analysis. Expertise in transforming complex datasets into actionable business insights through robust statistical and analytical methodologies. Ensures data accuracy while identifying and resolving bottlenecks to optimize data pipelines for peak performance. Proficient in leveraging big data tools such as Apache Spark and Hive, with a proven track record of effective collaboration with cross-functional teams. Committed to contributing to strategic decision-making within a data-driven environment, particularly in the clinical research sector.
Overview
7
7
years of professional experience
Work History
Data Engineer
Amdari
04.2024 - Current
- Engineered and deployed an automated, scalable ETL pipeline using PySpark and distributed computing to process vast volumes of raw financial data, reducing manual cleaning efforts and ensuring high data quality for downstream consumption.
Designed and implemented a normalized on a PostgreSQL server to centralize complex financial payroll data, establishing a single source of truth for city-wide resource allocation analysis.
Developed optimized aggregate tables and views within the Data Warehouse specifically for key business questions, enabling streamlined analysis of overtime spending and overall financial resource allocation.
Established robust data governance and security protocols by creating public users with limited privileges, ensuring controlled access and maintaining public transparency for sensitive payroll data.
Managed end-to-end project integrity by ensuring the entire solution was cloud-hosted, version-controlled, and fully documented, guaranteeing process reproducibility and facilitating enhanced team collaboration.
Data Analyst
Mediahuis, Ireland
05.2022 - 01.2024
- Analyzed large datasets to identify trends and insights, informing strategic decisions that improved audience engagement by 20%.
- Collaborated with marketing and sales teams to provide data-driven insights, increasing ad revenue by 15%
- Extracted and transformed data from different databases (Postgres, MySQL) reducing processing time by 50%
- Presented data-driven recommendations to senior management, leading to the implementation of cost-saving measures that resulted in a 12% reduction in expenses.
- Created various Excel documents to assist with pulling metrics data and presenting information to stakeholders for concise explanations of best placement for needed resources.
Security Analyst
Manguard Plus, Ireland
01.2022 - 05.2022
- Analysed network traffic logs to detect and investigate suspicious activities and potential security breaches.
- Conducted marketing forecast research and reduced processing time for monthly reports by 30% with four improved reporting tools and automation.
- Controlled access and monitored personnel in different zones for enhanced security and operational efficiency.
Data Statistician
Alliance4ai, CA, USA
06.2018 - 08.2020
- Built machine learning models with ensemble methods (random Forest and Logistic regression), while also utilizing deep learning models, to distinguish between legitimate and fraudulent transactions.
- Collaborated with product manager to perform a cohort analysis that identified an opportunity to reduce pricing by 15% for a segment of users to boost revenue by $16000.
- Effectively communicated complex statistical findings to non-technical stakeholders, supporting data-driven decision-making processes.
Education
MSc - Data Analytics
Dublin Business School
Dublin, Ireland01.2021
BSc - Mechanical Engineering
University of Debrecen
Hungary01.2017
Skills
- Proficient in Python and JavaScript
- Database: Microsoft SQL, MySQL, PostgreSQL, MongoDB, Cassandra
- ETL development- PySpark (distributed processing), ETL Pipeline Design, Automated Data Loading, Data Cleaning, Data Transformation, Handling large volumes of data
- Other Tools such as Apache-Spark, Databricks, Microsoft Excel Microsoft PowerBI, DAX, SQL, Cloud computing, Seaborn, Matplotlib, NumPy, and Pandas (Frameworks), Google Analytics, Google Ad Manager, Looker
- Collaborative tools (Slack, Team Viewer, Jira), Microsoft Office tools (MS Word, Excel, PowerPoint) and Google Suites (Doc, Sheet, Slide)
Timeline
Data Engineer
Amdari
04.2024 - Current
Data Analyst
Mediahuis, Ireland
05.2022 - 01.2024
Security Analyst
Manguard Plus, Ireland
01.2022 - 05.2022
Data Statistician
Alliance4ai, CA, USA
06.2018 - 08.2020
BSc - Mechanical Engineering
University of Debrecen
MSc - Data Analytics
Dublin Business School
PROJECTS
Churn Model Development: Developed a churn model utilizing historical user behavior data and subscription data., Engineered features to enhance model performance.
Propensity to Buy Model: Conducted data preparation and model selection for a propensity-to-buy model. Created datasets to support model training and validation.
Data Modernization: delivered a fully automated and scalable ETL pipeline for Nuga Bank to handle large volumes of financial data, significantly improving data quality and reporting efficiency.
link : https://github.com/gregtsado/ZipcoFood_orchestration
Fill Rate Analysis: Produced insightful visualizations to communicate fill rate trends and patterns., Analyzed impressions and ad request data to measure advertising effectiveness. Identified key metrics and dimensions influencing impressions/ad request ratios such as Brands, AdType, Application, LineItem and Operating System.
NYC Payroll Data Analytics: Designed and implemented a robust Data Warehouse and developing a fully automated ETL pipeline to ensure data consistency and quality
Link: https://github.com/gregtsado/Payroll_NYC
CORE COMPETENCIES
- Leadership skills
- Data Analysis
- Business Intelligence
- Statistical Analysis
- Project Management
- Predictive Analytics
- Predictive Modelling
- Business development
- Business & Trend Analysis
- Business Development
- Monitoring & Evaluation
- Machine learning