Charilaos Savoullis Email & Phone Number

London Area, United Kingdom

London, England, United Kingdom

• Built and maintained data pipelines for ingestion and processing, using AWS (S3, Glue, Lambda, Step Functions) to manage data flow from marketing platforms to S3 data lakes and then to Snowflake, ensuring data integrity and a 100% data integrity and optimal performance.• Designed and managed relational databases such as Postgres, MySQL, SQLite and Snowflake, resulting in optimised performance and a 25% reduction in query response time. • Built interactive dashboards using Power BI and Tableau, incorporating filters and visualisations to facilitate data-driven decision-making on time-series data. • Utilised data manipulation libraries such as Pandas, NumPy and PySpark alongside SQL, ensuring data integrity and precision in data transformation solutions, resulting in a 25% increase in processing efficiency. • Designed and orchestrated Azure Data Factory workflows to extract data from various sources, perform ETL processes in the data lake, and transfer it to the EDW.• Collaborated with data scientists, product owners and business analysts to contribute to requirement definition, solution design and architectural designs.

London, England, United Kingdom

• Developed Python scripts to automate tasks and web scrape data, boosting efficiency and productivity.• Conducted exploratory data analysis to uncover trends and insights in large datasets.• Created an automated reporting workflow using visualisation tools such as Google Analytics for streamlined insights delivery and decision-making.• Contributed to the development of data-driven decisions and features by providing insights and recommendations based on analysis.• Collaborated with cross-functional teams to define key performance indicators (KPIs) and create dashboards for tracking business metrics.

Limassol (Lemesos), Cyprus

• Executed functional/ NF test procedures and scripts either manually or by automated tools. Tracking and reporting on the test execution in a timely manner with attention given to achieving a high level of quality.• Coordinated with Development and Infra teams/peers on the resolution of issues, overseeing the testing progress and ensuring that high standards of quality are being met.• Gathered and documented the outcome of test executions and all information needed to support on going measurements and reporting on risks, defects, tests, and coverage.• Identified, documented and reported bugs, errors, interoperability flaws and other issues within proprietary software applications developed by the Company such as CRM.• Evaluated test exit criteria to assess if additional tests are required or if test scenarios needed to be adjusted.• Participated in and contributed to internal design reviews of testing materials.• Exporting and Importing data to and from various platforms for testing and reporting using MySQL queries and scripts.

Nicosia, Cyprus

• Website development and maintenance.• Configuration of the email system and online forms.• Modified HTML, JavaScript and CSS web pages to optimize the webpage’s performance.

Meng, Electrical And Electronics Engineering, Upper Second-Class Honours, 2:1

Activities and Societies: BEEES - Marketing Officer GoGreek - Member • Proficient in Python and MATLAB programming languages.

High School Diploma