Joe Leo
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Joe Leo Email & Phone Number

CEO @ Def Method – Custom Software Done Right at Def Method
Location: New York, New York, United States 9 work roles 3 schools
1 work email found @cyrusinnovation.com 4 phones found area 212 and 646 LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 4 phones

Work email j****@cyrusinnovation.com
Direct phone (212) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
CEO @ Def Method – Custom Software Done Right
Location
New York, New York, United States

Who is Joe Leo? Overview

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Quick answer

Joe Leo is listed as CEO @ Def Method – Custom Software Done Right at Def Method, based in New York, New York, United States. AeroLeads shows a work email signal at cyrusinnovation.com, phone signal with area code 212, 646, and a matched LinkedIn profile for Joe Leo.

Joe Leo previously worked as CEO at Def Method and Author at Manning Publications Co.. Joe Leo holds Ma, Arts from New York University.

Company email context

Email format at Def Method

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*@cyrusinnovation.com
68% confidence

AeroLeads found 1 current-domain work email signal for Joe Leo. Compare company email patterns before reaching out.

Profile bio

About Joe Leo

Joe Leo is a CEO @ Def Method – Custom Software Done Right at Def Method. He possess expertise in agile methodologies, ruby, test driven development, ruby on rails, software development and 23 more skills. Colleagues describe him as "It's not easy finding a development team that can both help you with your business practices and build an effective website; Def Method does both. Joe Leo is incredibly knowledgeable about what it takes to build out a robust website while also exhibiting superior business acumen. The PreeLine team would recommend the Def Method team to anyone looking for someone to build a site with them rather than for them.", "Joseph is bright, resourceful, and talented. It was a pleasure working with him and I would be glad to work with him again. Were I in a position to hire him I would.", and "Joe is an incredible team-lead and a human swiss army knife. At Benchmark, he demonstrated his ability to manage a complex software development process and his team consistently delivered working software on time. He is able to manage business priorities for his team, and direct them appropriately. He's also very aware of "social issues" in an organization, and is always striving to improve the human condition of his co-workers. In addition to these "soft" skills, though, he's a solid technologist who builds software in multiple languages and on multiple platforms. On a personal note, Joe is one of the best people I've worked with. His even temperament and strong work ethic make it a pleasure to be in the trenches with him. Work with him if you have the chance -- you will not regret it."

Listed skills include Agile Methodologies, Ruby, Test Driven Development, Ruby On Rails, and 24 others.

Current workplace

Joe Leo's current company

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Def Method
Def Method
CEO @ Def Method – Custom Software Done Right
AeroLeads page
9 roles · 22 years

Joe Leo work experience

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

Ceo

Current

New York, NY, US

Delivering results with custom software solutions, fantastic engineers, expert advice, and top-notch service.

Mar 2014 - Present

Author

Current

Shelter Island, NY, US

Co-author of The Well-Grounded Rubyist, 3rd Edition with David A. Black

Nov 2017 - Present

Member, Tech Advisory Board

New York, NY, US

The Foundling is a New York-based charity that empowers thousands of children and families to live independent, stable and fulfilling lives. Learn more at: https://www.nyfoundling.org/The Tech Advisory Board is responsible for advising on digital literacy and tech workforce development initiatives.

Feb 2016 - Sep 2017

Instructor

New York, NY, US

* Teaching Back End Web Development with Rails to adult learners.* Involved in a constantly growing and improving curriculum.* Counseling students and former students on potential projects and career paths.

Aug 2013 - Aug 2016

Associate Vice President

Zurich, CH

Software development and agile team leadership responsibilities. Extensive TDD and BDD in an XP environment. Currently working in C#, Scala, Ruby, and Java.

Aug 2012 - Mar 2014
3 education records

Joe Leo education

Ma, Arts

New York University

Bs, Economics

Penn State University

Education record

Holy Trinity High School
FAQ

Frequently asked questions about Joe Leo

Quick answers generated from the profile data available on this page.

What company does Joe Leo work for?

Joe Leo works for Def Method.

What is Joe Leo's role at Def Method?

Joe Leo is listed as CEO @ Def Method – Custom Software Done Right at Def Method.

What is Joe Leo's email address?

AeroLeads has found 1 work email signal at @cyrusinnovation.com for Joe Leo at Def Method.

What is Joe Leo's phone number?

AeroLeads has found 4 phone signal(s) with area code 212, 646 for Joe Leo at Def Method.

Where is Joe Leo based?

Joe Leo is based in New York, New York, United States while working with Def Method.

What companies has Joe Leo worked for?

Joe Leo has worked for Def Method, Manning Publications Co., Gotham Ruby Conference, The New York Foundling, and General Assemb.Ly.

How can I contact Joe Leo?

You can use AeroLeads to view verified contact signals for Joe Leo at Def Method, including work email, phone, and LinkedIn data when available.

What schools did Joe Leo attend?

Joe Leo holds Ma, Arts from New York University.

What skills is Joe Leo known for?

Joe Leo is listed with skills including Agile Methodologies, Ruby, Test Driven Development, Ruby On Rails, Software Development, Databases, Javascript, and C#.

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