Joe Leo

Joe brings his mix of engineering muscle, business acumen, enthusiasm for challenges, and technical leadership to the helm of Def Method. Before founding DM, Joe spent over a decade as a developer delivering high-quality software solutions spanning government, education, finance and e-commerce. He is also co-author of The Well-Grounded Rubyist, Third Edition. Outside of the office, he has helped to build the NYC developer community as lead organizer of GORUCO, a member of the Technical Advisory Board of the New York Founding, and an instructor at General Assembly.

CEO, Founder

Paul Ort

Chief Technology Officer

Chief Technology Officer

Isabelle Berner

Director of Product and Design

CEO, Founder

Jenn Imamura

Director of Business Development

CEO, Founder

Def Method Leadership

Def Method Leadership Team
Joe Leo

Joe is the founder and CEO of Def Method. He combines his engineering experience, business acumen, and proclivity for challenges to his leadership practice. Before founding DM, Joe worked with teams of every size and configuration to deliver high-quality software solutions across government, education, finance, and e-commerce. With a love of service and a commitment to his clients’ success, Joe enjoys discussing technical team management, implementing process improvements, and rescuing wayward software projects. Outside of work, he loves going on “adventures” with his five-year-old daughter, Lucy, and experiencing everything New York City has to offer.

Founder & CEO

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Paul Ort

Paul leads Engineering at Def Method. He is committed to the pursuit of technical excellence and the evolving of systems and teams through incremental improvement. Paul has extensive experience in full-stack web and native mobile development, and is increasingly focused on infrastructure automation and engineering workflow simplification. A classically trained violinist and pianist, Paul is fascinated by concepts and techniques of practice, and is exploring ways to apply them to knowledge work generally and software engineering skills in particular. Outside of work, he enjoys reading broadly, thinking by writing, and taking long walks.

Chief Technology Officer

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Isabelle Berner

Isabelle leads our Product and Design departments at Def Method. She has been a Product Manager for 12 years working in startups and consultancies such as Current,  Betterment, and Pivotal Labs. She has experience with all aspects of the product life cycle and on a wide variety of products including consumer facing products as well as enterprise and B2B products. She is dedicated to hiring and developing the best product managers and designers, and supporting them as they deliver impactful software that solves important business and user needs for Def Method’s clients. Outside of work, she enjoys kitesurfing, metalsmithing, and hanging out with her 3-year-old, Zoe.

Director of Product

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Jenn Imamura

As Director of Business Development, Jenn oversees the sales team at Def Method. She worked for 10+ years in the business services division at a large ITS organization where she managed enterprise accounts around the globe. She has a passion for business operations, account management, client partnerships, software design and development. At Def Method, Jenn fulfills her truest passion in helping people find solutions that strategically improve their businesses through the use of software engineering, product management, and design. When she’s not helping clients, Jenn can be found relaxing at the beach, improving her golf swing, or feasting at a new eatery.

Director of Business Development

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Developing software with high standards

We are committed to serving our clients through the delivery of valuable custom software. We follow lightweight, humanistic principles that prioritize agility over prescribed methodology. 

Def History

Founded in 2014, Def Method pairs agile development with best practices in management consulting to deliver high-quality custom software. We are flexible to our clients’ needs, realizing that software projects are expensive and complex and require discipline in order to deliver value. By focusing on both product and process, Def Method can help you build something great.

Headquartered in New York

7

Years in Business

26

Full-time employees
Committed to collaboration

A software project is innately complex and requires a high degree of interaction between people. Great technology is built through well-orchestrated human engagement, and the product, design and engineering teams must work together daily with business owners and leaders in order to optimize outcomes. At Def Method, our fully onshore team prioritizes communication and collaboration, creating an environment that supports individuals and fosters strong teams.

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