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Cassie Koomjian Email & Phone Number
Principal Developer
at
Substantial
3 work emails found
@substantial.com
2 phones found area 206
LinkedIn matched
✓ Verified Jun 2026
4 data sources
Profile completeness 100%
Current company
Role
Principal Developer
Location
Seattle, Washington, United States
Company size
Who is Cassie Koomjian? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Cassie Koomjian is listed as Principal Developer at Substantial, a company with 57 employees, based in Seattle, Washington, United States. AeroLeads shows a work email signal at substantial.com, phone signal with area code 206, and a matched LinkedIn profile for Cassie Koomjian.
Cassie Koomjian previously worked as Director of Development at Substantial and Associate Principal Developer at Substantial. Cassie Koomjian holds Ba, Computer Science from Grinnell College.
Company email context
Email format at Substantial
This section adds company-level context without repeating Cassie Koomjian's masked contact details.
{first}@substantial.com
95% confidence
AeroLeads found 3 current-domain work email signals for Cassie Koomjian. Compare company email patterns before reaching out.
Profile bio
About Cassie Koomjian
I am a web developer with over 10 years of experience. My primary expertise is in building web applications, but I have experience with a wide variety of technologies from developing mobile apps to web server administration.Specialties: Ruby/Rails, Javascript, React, React Native, PHP, Java, SQL, Linux, Apache/Nginx
Listed skills include Ruby On Rails, Mysql, Apache, Javascript, and 24 others.
Current workplace
Cassie Koomjian's current company
Company context helps verify the profile and gives searchers a useful next step.
Substantial
11 roles
Cassie Koomjian work experience
A career timeline built from the work history available for this profile.
Director Of Development
Associate Principal Developer
Substantial is a digital product studio creating best-in-class software that lowers risks and creates faster outcomes through strategy, design, & development for web, mobile, and connected devices.
Feb 2012 - Jul 2023
Co-Founder
Printwhatyoulike.Com
Responsible for all aspects of running a web startup: software development, server administration, customer service, and marketing
Freelance Developer
Feb 2010 - Jan 2012
Jan 2010 - Apr 2011
Senior Web Developer
Iowa Interactive
- Developed e-government applications for the state of Iowa and local governments.- Used Linux, Apache, MySQL, PHP, Java, Ruby on Rails, Javascript, Ajax, HTML/CSS.
Apr 2008 - Dec 2008
Web Developer
Iowa Interactive
- Developed e-government applications for the state of Iowa and local governments.- Used Linux, Apache, MySQL, PHP, Java, Ruby on Rails, Javascript, Ajax, HTML/CSS.
Aug 2005 - Apr 2008
User Consultant
- Assisted faculty and students with programming and software questions. - Supported Windows, Linux, MacOS, Microsoft Office, and mathematics and computer science software.
Jan 2002 - May 2005
Research Assistant
Professor Sam Rebelsky, Grinnell College
- Redesigned Web Raveler, an infrastructure for providing Web mediation services, written in Java. - Chosen to lead a team of students. - Created an API for developers of plugins for Web Raveler.- Designed the user interface using HTML/CSS.
May 2004 - Aug 2004
Research Assistant
Professor Sam Rebelsky, Grinnell College
- Redesigned Web Raveler, an infrastructure for providing Web mediation services, written in Java. - Implemented an authenticating HTTP1.1 proxy server as the framework.
May 2003 - Aug 2003
Team & coworkers
Colleagues at Substantial
Other employees you can reach at substantial.com. View company contacts for 57 employees →
JH
Jennifer H.
Colleague at SubstantialSeattle, Washington, United States, United States
View →
GY
Gangadhar Yousaf
Colleague at SubstantialHyderabad, Telangana, India, India
View →
MJ
Mike Judge
Colleague at SubstantialSeattle, Washington, United States, United States
View →
KT
Kelly Towle
Colleague at SubstantialLancaster Metropolitan Area, United States
View →
KG
Katie Garrison
Colleague at SubstantialMiami, Florida, United States, United States
View →
CM
Cristina Maiolati
Colleague at SubstantialRome, Latium, Italy, Italy
View →
MF
Matthew Findley
Colleague at SubstantialSeattle, Washington, United States, United States
View →
AL
Alan Levene
Colleague at SubstantialManchester Area, United Kingdom, United Kingdom
View →
RP
Rosa Parks
Colleague at SubstantialWest Palm Beach, Florida, United States, United States
View →
Jennifer H.
Colleague at SubstantialSeattle, Washington, United States, United States
View →
GY
Gangadhar Yousaf
Colleague at SubstantialHyderabad, Telangana, India, India
View →
MJ
Mike Judge
Colleague at SubstantialSeattle, Washington, United States, United States
View →
KT
Kelly Towle
Colleague at SubstantialLancaster Metropolitan Area, United States
View →
KG
Katie Garrison
Colleague at SubstantialMiami, Florida, United States, United States
View →
CM
Cristina Maiolati
Colleague at SubstantialRome, Latium, Italy, Italy
View →
MF
Matthew Findley
Colleague at SubstantialSeattle, Washington, United States, United States
View →
AL
Alan Levene
Colleague at SubstantialManchester Area, United Kingdom, United Kingdom
View →
RP
Rosa Parks
Colleague at SubstantialWest Palm Beach, Florida, United States, United States
View →
1 education record
Cassie Koomjian education
FAQ
Frequently asked questions about Cassie Koomjian
Quick answers generated from the profile data available on this page.
What company does Cassie Koomjian work for?
Cassie Koomjian works for Substantial.
What is Cassie Koomjian's role at Substantial?
Cassie Koomjian is listed as Principal Developer at Substantial.
What is Cassie Koomjian's email address?
AeroLeads has found 3 work email signals at @substantial.com for Cassie Koomjian at Substantial.
What is Cassie Koomjian's phone number?
AeroLeads has found 2 phone signal(s) with area code 206 for Cassie Koomjian at Substantial.
Where is Cassie Koomjian based?
Cassie Koomjian is based in Seattle, Washington, United States while working with Substantial.
What companies has Cassie Koomjian worked for?
Cassie Koomjian has worked for Substantial, Printwhatyoulike.Com, The Integer Group, Savvygoose.Com, and Iowa Interactive.
Who are Cassie Koomjian's colleagues at Substantial?
Cassie Koomjian's colleagues at Substantial include Jennifer H., Gangadhar Yousaf, Mike Judge, Kelly Towle, and Katie Garrison.
How can I contact Cassie Koomjian?
You can use AeroLeads to view verified contact signals for Cassie Koomjian at Substantial, including work email, phone, and LinkedIn data when available.
What schools did Cassie Koomjian attend?
Cassie Koomjian holds Ba, Computer Science from Grinnell College.
What skills is Cassie Koomjian known for?
Cassie Koomjian is listed with skills including Ruby On Rails, Mysql, Apache, Javascript, Php, Linux, Software Development, and Web Applications.
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