Jonathan Costello: Email & Phone Number

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Senior Content Strategist at Demandbase|San Diego, California, United States

Position:

Senior Content Strategist at Demandbase

Location:

San Diego, California, United States

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Last updated: 2026-06-15

Updated: 2026-06-15

Found email addresses for Jonathan Costello:

Business emails:

j**********o@goinformatics.com,

j*******o@fortunebuilders.com,

*o*@golims.com

Personal emails:

c******j@gmail.com,

j***********2@gmail.com

Found phones for Jonathan Costello:

+1-480-***-**63,

+1-323-***-**83,

+1-870-***-**35,

+1-323-***-**50

A different Jonathan Costello?

Work Experience 9 years

Senior Content Strategist at Demandbase

May 2024 - Current

Senior Content Marketing Manager at Aprimo

Mar 2023 - Apr 2024

Managing Editor at FortuneBuilders

Mar 2021 - Dec 2022

Content Editor at FortuneBuilders

Aug 2020 - Mar 2021

Lead Digital Marketing & PR Strategist at Inseev Interactive, part of 3Q Digital

Sep 2019 - Apr 2020

Digital Marketing & PR Strategist at Inseev Interactive, part of 3Q Digital

Mar 2019 - Sep 2019

Digital Marketing & PR Specialist at Inseev Interactive, part of 3Q Digital

Jul 2018 - Mar 2019

Digital Marketing Intern at Morgan Stanley

Jun 2017 - Aug 2017

Jonathan Costello started working in 2017, then the employee has changed 4 companies and 7 jobs. On average, Jonathan Costello works for one company for 11 months.

Jonathan is proficient in English and Spanish. Their professional focus is A/B Testing, Adobe Creative Suite, and Advertising across 3 core areas.

Jonathan holds Account-Based Go-to-Market (GTM) Certification, Google AdWords Fundamentals, and Google AdWords Search Certification certifications.

Education

Bachelor’s Degree at Tulane University - A.B. Freeman School of Business

High School at St. John's Preparatory School

Frequently Asked Questions

What is Jonathan Costello's email address?

SignalHire found verified email addresses for Jonathan Costello, both business and personal. Their business email is j**********o@goinformatics.com, and personal emails include c******j@gmail.com, and j***********2@gmail.com.

What is Jonathan Costello's phone number?

SignalHire found multiple verified phone numbers for Jonathan Costello: +1-480-***-**63, +1-323-***-**83, and +1-870-***-**35.

How do I contact Jonathan Costello at Demandbase?

You can reach Jonathan Costello 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 Jonathan Costello's professional background?

Jonathan Costello has 9 years of professional experience. They have held roles including Senior Content Marketing Manager, Managing Editor, and Content Editor at companies such as Aprimo, FortuneBuilders, and FortuneBuilders. Their education includes Bachelor’s Degree from Tulane University - A.B. Freeman School of Business, and High School from St. John's Preparatory School.

Is Jonathan Costello's contact information up to date?

Yes. Jonathan Costello's SignalHire profile was last updated on 15 June 2026, reflecting their current position as Senior Content Strategist at Demandbase in San Francisco, CA, United States.

Jonathan Costello Namesakes

Name

Company

Position

Jon Costello

Queensland Health

Principal Fire Safety Coordinator

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Jon Costello

LOVELL'S AUTOMOTIVE, INC.

Branch Manager

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