Football
CLETUS TENGEN
Data Analyst
Berlin
Summary
Highly motivated and detailed-oriented candidate passionate about using data to improve business performance and customer experience. Skilled at leveraging data to develop actionable solutions to business challenges and utilizing data mining and data visualization to create meaningful insights. Excellent technical aptitude and knowledge of programming languages, data analytics and data visualization.
Overview
9
9
years of professional experience
8
8
years of post-secondary education
7
7
Certifications
4
4
Languages
Work History
Data Analyst Intern
PwC Switzerland
Switzerland (Remote)
02.2025 - Current
- Converted raw datasets into meaningful formats by performing extensive pre-processing activities such as normalization and transformation.
- Optimized SQL queries for faster processing times, increasing overall productivity within the team.
- Completed data cleaning and data validation of existing spreadsheets to promote robust data management platform, resulting in accurate data analysis and entry.
- Assisted management in making informed decisions by presenting clear and concise reports detailing analytical findings.
- Visualization of data using Power BI
Operations Analyst
Lynk & Co
Berlin Area
01.2023 - 10.2023
- Coordinated daily pre-delivery services for over 700 vehicles, ensuring timely and efficient handovers
- Managed vehicle follow-up at workshops
- Approved invoices and conducted finance investigations, enhancing process accuracy
- Managed parts ordering, logistics delay rescheduling, and vehicle allocation, reducing downtime by 20%
Analyst
Appen
Berlin Area
01.2021 - 12.2022
- Analyzed performance data to interpret KPIs, identifying long-term trends and short-term event impacts
- Supported forecast and budget creation, enhancing financial tracking efficiency by 15%
Support Specialist, Identity and Access Governance
Atos
Berlin Area
01.2020 - 12.2020
- Oversaw access requests and managed authorization rights for Deutsche Bank employees
- Responsible for revocations and recertification of internal control systems, ensuring compliance and security
Online Data Analyst
Lionbridge Global Sourcing Solutions Inc
Berlin Area
03.2019 - 01.2020
- Collected, cleansed, and preprocessed data from various online sources, ensuring accuracy and reliability
- Utilized statistical methods to analyze large datasets, identifying trends and patterns to inform business decisions
Master Data Analyst
Weber-Stephen Products GmbH
Berlin Area
01.2018 - 01.2019
- Assures that data is frequently updated, correct and accessible in order to support objectives and strategic goals
- Optimize processes for new data and new product entries
- Sync and update systems
- Processing Helpdesk tickets, following the company's guidelines and collaborating on the creation of Master Data documentation
IT Quality Assurance
Helpling GmbH
Berlin Area
06.2016 - 12.2017
- Manual testing of new features for the web application in 12 countries
- Manuel Testing of Release Candidates features
- Writing and Editing Test cases
- Bug Analysis & reporting using JIRA
- Smoke and Regression testing
- Exploratory Testing
- Received and maintained over 88% average for call quality assurance
Education
Data Analyst - Computer Science
SPICED Academy
10.2023 - 02.2024
M.Sc. - Information and Operations Management
Europa-Universität Viadrina Frankfurt
04.2014 - 05.2016
Postgraduate certificates - Business Informatics
Europa-Universität Viadrina Frankfurt
04.2013 - 04.2014
Bachelor of Science - International Business Administration
Kultur University
Istanbul, Turkey 09.2011 - 02.2012
B.Sc. - International Business Administration
Europa-Universität Viadrina Frankfurt
10.2008 - 12.2012
Skills
Python
Pandas
NumPy
Matplotlib
Seaborn
Plotly
SQL
PostgresSQL
dbt
Tableau
Power BI
HTML
CSS
JavaScript
SAP FICO
SAP MM
SAP SD
MS Navision
MS Dynamics 365
Jira
ServiceNow
GitHub
VSCode
Jupyter Notebook
MS Office
Excel
Word
PowerPoint
Access
Google Workspace
Regression Analysis
A/B Testing
Hypothesis Testing
Probability
AI
Certification
Data Analytics and Engineering, Spiced Academy
Passions
- Cooking
- Football
Skills
Python - Pandas, NumPy, Matplotlib, Seaborn, Plotly, SQL - PostgresSQL, dbt, Tableau, Power BI, HTML, CSS, JavaScript, SAP FICO, SAP MM, SAP SD, MS Navision, MS Dynamics 365, Jira, ServiceNow, GitHub, VSCode, Jupyter Notebook, MS Office - Excel, Word, PowerPoint, Access, Google Workspace, Regression Analysis, A/B Testing, Hypothesis Testing, Probability, AI
Interests
Cooking
Timeline
Data Analyst Intern
PwC Switzerland
02.2025 - Current
Data Analyst - Computer Science
SPICED Academy
10.2023 - 02.2024
Operations Analyst
Lynk & Co
01.2023 - 10.2023
Analyst
Appen
01.2021 - 12.2022
Support Specialist, Identity and Access Governance
Atos
01.2020 - 12.2020
Online Data Analyst
Lionbridge Global Sourcing Solutions Inc
03.2019 - 01.2020
Master Data Analyst
Weber-Stephen Products GmbH
01.2018 - 01.2019
IT Quality Assurance
Helpling GmbH
06.2016 - 12.2017
M.Sc. - Information and Operations Management
Europa-Universität Viadrina Frankfurt
04.2014 - 05.2016
Postgraduate certificates - Business Informatics
Europa-Universität Viadrina Frankfurt
04.2013 - 04.2014
Bachelor of Science - International Business Administration
Kultur University
09.2011 - 02.2012
B.Sc. - International Business Administration
Europa-Universität Viadrina Frankfurt
10.2008 - 12.2012