Cassie Koomjian
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Cassie Koomjian Email & Phone Number

Principal Developer at Substantial
Location: Seattle, Washington, United States 11 work roles 1 school
3 work emails found @substantial.com 2 phones found area 206 LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

Contact Signals · 3 work emails · 2 phones

Work email c****@substantial.com
Direct phone (206) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Principal Developer
Location
Seattle, Washington, United States
Company size

Who is Cassie Koomjian? Overview

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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

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{first}@substantial.com
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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
Substantial
Principal Developer
seattle, washington, united states
Website
Employees
57
AeroLeads page
11 roles

Cassie Koomjian work experience

A career timeline built from the work history available for this profile.

Director Of Development

Seattle, Washington, United States

Associate Principal Developer

Seattle, WA

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

Des Moines, Iowa Area

Responsible for all aspects of running a web startup: software development, server administration, customer service, and marketing

Developer

Developed a sweepstakes/daily deal site in Ruby on Rails

Jan 2010 - Apr 2011

Senior Web Developer

Iowa Interactive

Des Moines, Iowa Area

- 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

Des Moines, Iowa Area

- 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 →

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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