James Stack: Email & Phone Number

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Principal at Monzi|São Paulo, Brazil

Position:

Principal at Monzi

Location:

São Paulo, Brazil

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Last updated: 2026-07-31

Updated: 2026-07-31

Found email addresses for James Stack:

Business emails:

j*********k@firstdata.com,

**@ppro.com,

j*********k@ppro.com

Personal emails:

j*********k@gmail.com

Found phone for James Stack:

+55-***-***-3172

A different James Stack?

Work Experience 21 years

Principal at Monzi

Oct 2023 - Current

Operating Partner at Paymend

May 2025 - Current

VP, Commercial, Americas at Fexco

Apr 2026 - Current

Head of Product (Global) at YUNO

Feb 2024 - Apr 2025

Director of Product at PPRO

Sep 2021 - Feb 2024

Director, Product Management LATAM at Fiserv

Sep 2017 - Aug 2021

Director, Product Management EMEA at Fiserv

Jan 2017 - Sep 2017

Channel Development Manager at Fiserv

Sep 2014 - Jan 2017

Product Manager at Mastercard

May 2012 - Sep 2014

Manager, Financial Partnerships | Payments & FX at Fexco

Feb 2010 - May 2012

Product Analyst | Payments & FX at Fexco

Mar 2008 - Feb 2010

Product Champion (Secondment) at European Merchant Services

Jun 2011 - Oct 2011

Product Management Internship at Amadeus

Aug 2007 - Jan 2008

Graduate Program at Invest Northern Ireland

Aug 2005 - Sep 2006

James Stack started working in 2005, then the employee has changed 9 companies and 13 jobs. On average, James Stack works for one company for 1 year 8 months.

James is proficient in English, French, and Portuguese. Their professional focus is Account Management, B2B, and Business Analysis across 3 core areas.

Education

BA at Trinity College, Dublin

MA at Ecole supérieure de Commerce de Rennes

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Hamlin's Marine

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