Ivar Jacobson International (IJI) and PEM Systems announce a Practice Essentialization Partnership

Ivar Jacobson International (IJI) and PEM Systems are delighted to announce a partnership to describe multiple industry-critical problem-solving practices using the Essence Language.

The newly Essentialized practices will be added to the ever-growing Essence based practice eco-system, giving organizations and teams even more flexibility as they select a way of working that is right-sized for them. The Essence and practice based approach is revolutionizing the way that the industry thinks about and presents development ‘methods’. Essence provides the architectural ‘glue’ that is helping organizations to treat software development more and more as an efficient engineering discipline rather than a cottage industry or craft. Read more about the values and use cases of Essence in Ivar’s recent article “Essence, the Standard Common Ground, in a Nutshell”.

Paul E. McMahon, principal consultant at PEM Systems, and a co-developer of the Essence framework, has developed multiple industry-critical problem-solving practices using an approach that applies Essence as a “thinking framework.” The practices are all methodology independent and can work effectively with whatever practices an organization is currently using.

“I’m really excited for the opportunity to move my Essence “thinking-framework” practices into IJI’s tooling and make them available to the broader software and systems engineering community through the growing Essence-based Eco-system” , said Paul E. McMahon. “Most of my clients come from the US Department of Defense industry and already have mature practices. What they want are very specific improvements to their existing way of working, such as making their practices more cybersecure and cyber-resilient. I teach them how to use the Essence framework to get rapid and measurable performance improvement in the areas they know they need help,” McMahon said. “As a result, some of my clients have started referring to my Essence “thinking-framework” practices as Consulting 101. Specifically, I teach my clients how to use the Essence standard checklists in what I refer to as ‘stealth mode’ to help them isolate the root cause of their problems.”

“Paul and I have worked together around Essence and the practice-based approach for many years and I am delighted that his great work will be added to the eco-system” , said Ivar Jacobson, CEO and Founder of Ivar Jacobson International. “Cybersecurity is a critical area for our industry so to get thinking around that subject more widely available can only be a good thing.”

More information about the Essence partner network can be found on the IJI Essence Partner page.

About Ivar Jacobson:

Dr. Ivar Jacobson received his Ph.D. in computer science from KTH Royal Institute of Technology, was rewarded the Gustaf Dalén medal from Chalmers University in 2003 and got an honorary doctorate at San Martin de Porres University, Peru, in 2009.

His contributions in software engineering span over 50 years starting from components and component architecture in 1968 to the essentials of modern software engineering (Essence) in 2019. In between he created Use Cases and what became the Unified Process in 1986 and he was the co-creator of UML in 1997.

Ivar is the principal author of eight books and co-author of another three.

For more information on Ivar, visit

About Paul McMahon:

Paul E. McMahon is Principal Consultant at PEM Systems and Senior Consulting Partner at Software Quality Center, LLC where he coaches teams in practical approaches to increase agility and performance. Prior to his independent coaching, Paul spent 25 years working as a software developer and manager in the US defense industry. Paul has been a leader in the SEMAT initiative that led to the OMG Essence standard since the Zurich meeting in 2010. Paul is the author of seven technical books, including Shy Boys: Notes from ten years of working with software engineering giants which chronicles his personal experiences leading to the Essence standard.

For more information about Paul’s Essence “thinking-framework” practices and training courses related to general problem-solving, root cause analysis and measurement refer to:

For more information about Paul’s Essence “thinking-framework” practices and training courses related to Cybersecurity and Cyber-resilience refer to:

For more information about PEM Systems, and Paul’s other Essence related publications and training courses refer to Paul is a Lean Six Sigma Black Belt, he holds the Program Protection Credential from the Defense Acquisition University, and he is an avid runner having completed 20 marathons including 12 Boston Marathons and over 80 half marathons.

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