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Olivier MarzinOM

Olivier Marzin

Payments, Fraud, and Chargebacks Specialist

€600/day
Barcelone, ES
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Olivier

Hello, I am French and I live in Spain, after many years spent in the United Kingdom and Ireland.

I am a motivated and experienced person in risks and fraud, technologies, and data applied to payments.

I specialize in the automation and implementation of efficient operational processes, as well as in the use of generated data for performance monitoring. I am very comfortable with data and technology to detect trends and optimize revenue (loss reduction, success increase). On the technical side, I would coordinate with your development team to optimize results if you have ambitious projects. I always prioritize the development of long-term solutions over short-term ones.

Formerly a PayPal employee, I am proficient in PayPal and payment gateways, as well as many aspects that can be optimized. I can be your primary contact for payments.

Furthermore, I have 5 years of experience as a business analyst (stocks), which allows me to better understand business opportunities in billing and product areas, as well as to gain broader knowledge of the e-commerce sector.

I am starting my freelance activity and look forward to hearing from you. I am working freelance because I am launching major projects and want to expand my family. Thank you.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Spanish

    Fluent

  • German

    Fluent

Can work on-site
Barcelone (up to 50km)

Experience

  • Mad Collective
    Chargeback and Fraud Analyst
    April 2018 - May 2025 (7 years and 1 month)
    Barcelona, Spain
    -Setting up chargeback representment process; -Understanding bank requirements and data sources -Requesting all needed data from IT support and payment partners -Automation of process (Google App script-> Zendesk tickets-> Google docs-> SQL Database) -Training and managing outsourcers -Analyse results and share fraud trends found in Bigquery, Redshift (SQL) and tableau. -Optimise traffic by detecting and blocking low performing and Fraudulent subsegments
  • Air Products
    Cash Collector
    October 2017 - April 2018 (6 months)
    Barcelona, Spain
    Cash Collector
    • Ensuring the timely collection of outstanding balances/debts from my b2b portfolio.
    • Negotiating satisfactory outcomes with my clients and banks.
    • Ensuring customer calls and emails are responded to.
    • Identify any customer complaints and escalate as appropriate.
    • Anticipate and communicate with different departments.
    • Liaise with the credit & collections coordinator or supervisor about all credit issues.
  • PayPal
    Dispute and resolution specialist
    April 2014 - June 2017 (3 years and 2 months)
    Co. Dublin, Ireland

    • Assign and prioritise workload to agents based on queue volume to manage the service level.
    • Rolled out new workload management method in a team of 12.
    • Report on EMEA queue volumes and build over 10 Excel and Microstrategy reports.
    • Complete Quality Monitoring each month and give appropriate feedback.
    • Built the new quality process and tools with management.
    • Develop fraud detection projects in claims and chargebacks globally - rolled out Microstrategy and Excel/VBA methods to detect over 30000 fraudulent accounts annually.
    • Liaised with account managers to establish Microstrategy, VBA methods and customer led mitigation solutions for the biggest EMEA enterprise merchants to reduce buyer fraud targeting the merchants.
    • Pilot, co-develop and run tools to automate parts of claims and chargeback process with VBA and Macro Express; liaise with business intelligence, product integration and process owners - resulting in over 2 million euros in annual savings.

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Education

  • SQL For Data Science With Google Big Query - Chris Levy
    Online Course (Udemy)
    2019
    SQL For Data Science With Google Big Query - Chris Levy
  • Advanced diploma in project management, Project Management., Project Management.
    Dublin Business School
    2011
    Advanced diploma in project management, Gestion de projet., Gestion de projet.

Skill set

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