John Siddall

John Siddall: Email & Phone Number

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Senior Portfolio Manager at Capital One|Brooklyn, New York, United States

Position:

Senior Portfolio Manager at Capital One

Location:

Brooklyn, New York, United States

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Last updated: 2026-04-14
Updated: 2026-04-14

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Work Experience 13 years

Senior Portfolio Manager at Capital One

May 2022 - Current

Senior Project Manager at Acacia Network

Apr 2016 - May 2022

Project Manager at Douglaston Development

May 2013 - May 2015

John Siddall started working in 2013, then the employee has changed 2 companies and 2 jobs. On average, John Siddall works for one company for 4 years.

Their professional focus is Affordable Housing, Non-profit Management, and Portfolio Management across 3 core areas.

Education

Bachelor of Arts - BA at Oberlin College

Frequently Asked Questions

What is John Siddall's email address?

SignalHire found a verified business email address for John Siddall: j******l@capitalone.com.

What is John Siddall's phone number?

SignalHire found a verified phone number for John Siddall: +1-***-***-4851.

How do I contact John Siddall at Capital One?

You can reach John Siddall through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is John Siddall's professional background?

John Siddall has 13 years of professional experience. They have held roles including Senior Project Manager, and Project Manager at companies such as Acacia Network, and Douglaston Development. Their education includes Bachelor of Arts - BA from Oberlin College.

Is John Siddall's contact information up to date?

Yes. John Siddall's SignalHire profile was last updated on 14 April 2026, reflecting their current position as Senior Portfolio Manager at Capital One in McLean, Va, United States.

John Siddall Namesakes

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John Siddall
Director of IT Infrastructure and Platform Operations
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John Siddall
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John Siddall
Director of IT Infrastructure and Platform Operations
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