Marek Barabas
Woking,Surrey
Summary
Accomplished professional specializing in data governance, quality management, and process improvement. Proficient in data loading, validation, and quality assurance, with strong troubleshooting and helpdesk support skills. Experienced in project management and cross-functional coordination, ensuring effective client and stakeholder engagement. Expertise in market and stakeholder reporting, along with processing purchase orders and invoices.
Overview
19
19
years of professional experience
5
5
years of post-secondary education
1
1
Certification
Work history
Data Excellence Manager
MediaCom/EssenceMediaCom/WPP Media
London
11.2018 - 12.2025
- Held progressively responsible roles over 6 years within data management, reporting, and support operations across multiple platforms and high-profile clients.
- Amazon – Data Excellence Manager - Collaborated with media, analytics, and technology teams to streamline data processes, improve workflows, and deliver actionable insights.
- Managed data quality and governance across Amazon media accounts, ensuring accurate and reliable reporting for stakeholders.
- Edge Competitive Reporting Tool - Managed data loading operations for major clients including Mars, Bayer, and Shell.
- Ensured timely, accurate delivery of market reporting data, maintaining high client satisfaction.
- Synthesis tool - Provided helpdesk support, issue investigation, and resolution for platform users.
- Collaborated with an external backend support partner to troubleshoot and resolve technical issues.
- Acted as a liaison between internal teams, users, and backend developers to improve system performance.
- Project Lead – SOW Tool & Contract Review Tool - Led the end-to-end delivery of both tools, from requirement gathering and testing to implementation.
- Coordinated cross-functional teams to successfully launch tools on time and within scope.
- Mars 360 Rejection Prototype - Developed and tested a naming convention prototype to improve data standardization and reduce rejection rates.
- Hasbro mValidate Corrector & Naming Generator - Developed data validation and naming convention tools to safeguard data integrity and improve processing accuracy for client deliverables.
- Mars Team (Data QA / Data Validator) - Executed comprehensive data checks and validations across Mars business segments, ensuring quality and reliability of client reports.
- Supported issue resolution processes to enhance reporting accuracy and client satisfaction for their biggest segments.
Branch Manager
J&S Accessories ltd
New Malden
03.2017 - 11.2018
- Managed daily operations to ensure smooth running of the branch.
- Oversaw bookings on invoices and scheduling of jobs to ensure efficiency. . Coordinated stock-checking processes and resolved discrepancies. Cultivated relationships with suppliers.
- Led the interviewing process for new candidates to enhance team capabilities.
- Ensured compliance with company policies, maintaining ethical standards.
- Reviewed and analysed sales data to identify growth opportunities.
- Addressing returns and warranty claims, maintaining company's reputation.
- Tel. Number - 020 8949 5731
Assistant Manager
J&S Accessories ltd
New Malden
10.2013 - 03.2017
- Assisted with daily tasks and rota for efficient operations.
Supported customer service initiatives through timely order placement and stock management. - Monitored deliveries and addressed issues promptly.
- Developed strong relationships with suppliers, ensuring timely delivery of products.
- Monitored sales performance regularly adjusting strategies as required.
- Tel. Number - 020 8949 5731
Sales Assistant
West London Yamaha
Twickenham
07.2013 - 06.2013
- Utilised POS systems to process cash transactions, delivering prompt service while verifying cash accuracy and reconciliation procedures.
- Assisted customers with product selection for optimal satisfaction.
- Demonstrated products effectively leading to increased sales conversions.
- Tel. Number - 020 8949 5731
Sales Assistant
J&S Accessories ltd
New Malden
05.2012 - 06.2013
- Collaborated effectively with team members to meet sales targets.
- Delivered exceptional after-sales service, encouraging repeat business.
- Managed till operations smoothly, reducing waiting time for customers.
- Maintained knowledge of current sales promotions helping customers make informed buying decisions.
- Offered personalised shopping advice to enhance customer experiences.
- Tel. number - 0208 546 9764
Assistant Manager
Domino’s Pizza
01.2012 - 05.2012
- Carried out day-to-day duties accurately and efficiently.
- Ensured health and safety compliance, maintaining a safe working environment for all staff members.
- Head office tel. number – 0207 737 7171
Assistant manager / Manager in training
Domino’s Pizza
Teddington, Middlesex
12.2011 - 02.2012
- Addressed customer queries promptly, ensuring their satisfaction was met at all times,.
- Monitored food quality control procedures diligently, maintaining highest standards of dishes served.
- Managed supply inventory to avoid shortages or excesses.
- Tel. number - 0208 977 7722
Head driver, Assistant manager
Domino’s Pizza
Kingston Upon Thames, England
09.2006 - 12.2011
- Ensured safety and operational readiness of 13 motorcycles for shift deployment.
- Oversaw daily operations to achieve high productivity levels.
- Tel. number - 020 8974 5666
Education
Telecommunications Engineering
Technical University of Kosice
01.2004 - 01.2005
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Secondary Technical School of Electrical Engineering
Kosice, Slovakia 01.2000 - 01.2004
Skills
- Data loading, validation, and QA, Issue troubleshooting
- Helpdesk and technical support
- Project management and cross-functional coordination
- Stakeholder management, Process improvement
- Data governance, Data quality management
- Market reporting and stakeholder reporting
- Purchase orders processing, Invoice processing
Certification
- Excel Power Tools for Data Analysis – Coursera 2024
- Data Analyst Professional Certificate – Coursera 2022
- Data Analysis with Python – Coursera 2022
- Databases and SQL for Data Science with Python – Coursera 2022
- Data Visualization and Dashboards with Excel and Cognos – Coursera 2021
- Introduction to Data Analytics – Coursera 2021
- AI for Everyone – Coursera 2021
- Excel Essentials for Data Analytics – Coursera 2021
- Introduction to Artificial Intelligence – Coursera 2020
- Excel Basics for Data Analysis – Coursera 2019
- Python for Data Science, AI & Development – Coursera 2019
- Basic Management Course – October 2011, Milton Keynes
LANGUAGES:
English- active (writing and speaking)
Beginner
Slovak, Polish, Czech - active
Beginner
IT Skills:
MS Windows (from 3.1 – Windows 11), MS Office, Excel, Outlook, Word, Power Point, Sharepoint, Sage, SQL, Tableau, Power BI, Python,
Driving licence:
A, B, C, T
Timeline
Data Excellence Manager
MediaCom/EssenceMediaCom/WPP Media
11.2018 - 12.2025
Branch Manager
J&S Accessories ltd
03.2017 - 11.2018
Assistant Manager
J&S Accessories ltd
10.2013 - 03.2017
Sales Assistant
West London Yamaha
07.2013 - 06.2013
Sales Assistant
J&S Accessories ltd
05.2012 - 06.2013
Assistant Manager
Domino’s Pizza
01.2012 - 05.2012
Assistant manager / Manager in training
Domino’s Pizza
12.2011 - 02.2012
Head driver, Assistant manager
Domino’s Pizza
09.2006 - 12.2011
Telecommunications Engineering
Technical University of Kosice
01.2004 - 01.2005
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Secondary Technical School of Electrical Engineering
01.2000 - 01.2004