Lefteris Tziallas

Lefteris Tziallas

Data Analyst Assistant Accountant
Greece
German, English, Greek

About Me

My goal is to bring my strong background in mathematics statistical analysis and actuarial-financial mathematics together with my accounting experience to provide better analysis and utilization of the company's financia…

Experience

Data Analyst Assistant Accountant

Vasilaros OD. OE
Jan 2020 - Present · 6 years 9 months

<p>Managing sales invoices and credit notes<br>
Keeping track of sales invoices<br>
Handling credit notes for discounts<br>
Dealing with customer calls and emails<br>
Addressing concerns and providing assistance<br>
Using Excel and other tools to study sales data and create reports<br>
Suggesting improvements for invoicing and document management processes based on data analysis<br>
Working together with the team to examine information and compile reports for management<br>
Interpreted datasets to uncover insights that guide business decisions<br>
Managed data systems for collection and processing</p>

Assistant Accountant

Kalogirou Accounting Office, Karlovasi Samos
Jan 2021 - Jan 2024 · 3 years

<p>Internship in Accounting Office in Karlovasi Samos as Assistant Accountant</p>

Data Entry Clerk

Hotel Meropi
Jan 2018 - Jan 2020 · 2 years

<p>Managed data entry tasks<br>
Performed data verification and quality checks on a daily basis<br>
Used Microsoft Excel and other data entry software<br>
Input and updated information</p>

Internship

Kalogirou Accounting Office
Jan 2015 - Jan 2015

Math Teacher

Math Teacher

<p>Developed and implemented curriculum for high school math courses<br>
Tutored students in algebra, geometry, and calculus<br>
Utilized technology to enhance student learning and engagement</p>

Skills

Database Administration Coordination DB2 Database Administration DBA Disaster Recovery Linux SAN Technical Support Services Windows Operational Process Data Integrity PI-SQL Procedures SQL Server Reporting Services (SSRS) OEM Advanced Statistical Analysis R Studio Pylon Data analysis Machine learning Communication skills Microsoft Office Microsoft Excel SQL Python Critical thinking Teamwork SAS MATLAB SPSS Word PowerPoint Access Internet
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