Found email addresses for Dan Costello:
Business emails:
d********o@github.com
Personal emails:
d***@userclouds.com
Found phones for Dan Costello:
+1-403-***-**99,
+1-403-***-**84,
+1-403-***-**70,
+1-514-***-**19
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A different Dan Costello?
Sign up to search for other Dan Costello's across our 850M+ professionals databaseWork Experience 17 years
Software Developer at
GitHub
Jul 2025 - Current
Software Developer at
UserClouds
Sep 2024 - Jul 2025
Software Developer at
Instant Labs, Inc.
Jan 2022 - Sep 2024
Software Developer at
Rare Days
Jan 2020 - Sep 2022
Software Developer at
Pixel Union
Jan 2019 - Jan 2020
Software Developer at
Flow Marketing
Jan 2015 - Jan 2019
Software Developer at
Briteweb
Jan 2013 - Jan 2015
Co-Founder & Director at
public records
Jan 2009 - Jan 2014
Dan Costello started working in 2009, then the employee has changed 7 companies and 1 job. On average, Dan Costello works for one company for 2 years 5 months.
Frequently Asked Questions
SignalHire found verified email addresses for Dan Costello, both business and personal. Their business email is d********o@github.com, and personal emails include d***@userclouds.com.
SignalHire found multiple verified phone numbers for Dan Costello: +1-403-***-**99, +1-403-***-**84, and +1-403-***-**70.
You can reach Dan 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.
Dan Costello has 17 years of professional experience. They have held roles including Software Developer, Software Developer, and Software Developer at companies such as UserClouds, Instant Labs, Inc., and Rare Days.
Yes. Dan Costello's SignalHire profile was last updated on 7 October 2025, reflecting their current position as Software Developer at GitHub in San Francisco, CA, United States.
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