Georgios Efstatoglou

Georgios Efstatoglou

Data Analyst
Portsmouth , England , United Kingdom (UK)
Greek, English

About Me

MSc Data Analytics graduate with a strong foundation in Mathematics and hands-on experience in SQL, Python, and visualisation tools like Tableau and Power Bi. Skilled in data scraping, cleaning, querying, and building da…

Experience

Trading Assistant (Full Time)

Sainsbury’s, Broadcut branch, Fareham PO16 8SU
Jul 2025 - Present · 1 year

Ensured that shop’s shelfs are filled and sorted correctly

Trading Assistant

Sainsbury’s, Broadcut branch, Fareham PO16 8SU · Fareham , England , United Kingdom (UK)
Jul 2025 - Present · 1 year

Ensured that shop’s shelves are filled and sorted correctly .

Kitchen Assistant (Part Time)

M Dim Sum masterdimsum, 109 Above Bar Street, Southampton SO14 7FH
Apr 2025 - Jul 2025 · 3 months

Ensured cleanliness and sanitation of all kitchen equipment and work areas in a line with health standards

Kitchen Assistant

M Dim Sum masterdimsum, 109 Above Bar Street, Southampton SO14 7FH
Apr 2025 - Jul 2025 · 2 months

Ensured cleanliness and sanitation of all kitchen equipment and work areas in line with health standards

Inventory Specialist (Part Time)

RGIS Inventory Specialists Limited rgis.co.uk, District 772, 1631 Parkway, Whiteley, Fareham PO15 7AH
Dec 2024 - Apr 2025 · 4 months

Accuratly stocktaking in various types of retail shops from grocery to cosmetics stores

Inventory Specialist

RGIS Inventory Specialists Limited, District 772, 1631 Parkway, Whiteley, Fareham PO15 7AH
Dec 2024 - Apr 2025 · 4 months

Accurately stocktaking in various types of retail shops from grocery to cosmetics stores

Car Rental Agent (Full Time)

Drive365 drive365.rent, 11 Industrial Road E, Herakleion 71601, Crete, Greece
Apr 2024 - Aug 2024 · 4 months

Welcoming and customer service
Processing car rental contracts
Photography of the car before delivery
Car check on delivery
Answering e-mails and phone calls
Cash check at the end of the shift

Car Rental Agent

Drive365, 11 Industrial Road E, Herakleion 71601, Crete, Greece
Apr 2024 - Aug 2024 · 4 months

Welcoming and customer service, Processing car rental contracts, Photography of the car before delivery, Car check on delivery, Answering e-mails and phone calls, Cash check at the end of the shift

Mathematics Tutor (Part Time)

Self-employed – Freelancer https://giorgosefstatoglou.github.io/com/
Aug 2022 - Jun 2024 · 1 year 10 months

Delivered precise and clear theoretical knowledge (incl. complex theories, principles and methodologies)
Designed systematic and logical paths for exercises solving
Prepared students for internal school examinations

Mathematics Tutor

Self-employed – Freelancer
Aug 2022 - Jun 2024 · 1 year 10 months

Delivered precise and clear theoretical knowledge (incl. complex theories, principles, and methodologies), Designed systematic and logical paths for exercises solving, Prepared students for internal school examinations

Admissions and Administration (Full Time)

Katranitsa Theodora - Foreign Language School and the Lifelong Learning Institute, 1 Kilkisiou str., Drama, 66100, Greece
Apr 2023 - Nov 2023 · 7 months

Provided detailed information regarding educational programs to prospective participants, ensuring a comprehensive understanding of program objectives, structures, and benefits.
Managed the assembly of individuals into coherent groups, aligning participants with comparable educational needs and learning objectives.
Oversaw the meticulous preparation and verification of requisite documentation for participants, ensuring adherence to established guidelines and procedural compliance.
Scheduled and manage the group's instructional sessions and examinations, guaranteeing optimal accommodation of participants’ availability and program timelines, while maintaining the integrity of the educational objectives.

Admissions and Administration

Katranitsa Theodora - Foreign Language School and the Lifelong Learning Institute, 1 Kilkisiou str., Drama, 66100, Greece
Apr 2023 - Nov 2023 · 7 months

Provided detailed information regarding educational programs to prospective participants, ensuring a comprehensive understanding of program objectives, structures, and benefits, Managed the assembly of individuals into coherent groups, aligning participants with comparable educational needs and learning objectives, Oversaw the meticulous preparation and verification of requisite documentation for participants, ensuring adherence to established guidelines and procedural compliance, Scheduled and managed the group's instructional sessions and examinations, guaranteeing optimal accommodation of participants’ availability and program timelines, while maintaining the integrity of the educational objectives

Skills

Excel Python NumPy Power BI Tableau SQL Pandas Data Cleaning Exploratory Data Analysis Data querying Aggregations Subqueries CTEs PivotTables Lookup Functions Data summarisation Interactive dashboards KPI reporting Natural Language Processing Sentiment classification SWOT Data visualisation Big Data Machine Learning Statistical Machine Learning Data Management Programming for Data Analysis and AI Applied Statistics Probability Theory Stochastic Processes Algorithm Design and Analysis Programming
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