Presenter Bios London 2017


Bob Hruška

Lieber Lieber 

Bob, formally known as Bohumil Hruška is an OMG Certified UML® Professional™ who has over fifteen years’ experience in software engineering, where he has played various roles in several industries delivering systems that offer real value for customers. Bob possesses experience in running large projects both on-site and working with remote, multicultural teams. Bob is also experienced in the Capability Maturity Model Integration (CMMI) appraisal journey and with development of the New Product Introduction (NPI) process.


Dennis Geluk


 Dennis is a senior information analyst and partner at DiVetro in the Netherlands. He has over 15 years of experience in IT. During this period he has fulfilled a broad spectre of roles at different customers.  Being a certified UC2.0 coach Dennis helped numerous customers in implementing the UC2.0 practice and improving company requirements standards and guidelines with agile elements. Currently Dennis is working at Dutch Railways as an information analyst and coach in implementing the UC2.0 practice within a project that creates Apps for all outside staff of Dutch Railways.  Over the years Dennis has worked with a variety of case tools. He has been using different versions of Enterprise Architect and always tries to get the best out of the use of a case tool.  Both Dennis and DiVetro are convinced that a good set of company guidelines and standards can help to maintain a high level of quality and consistent documentation set. As a business partner of Ivar Jacobson International, DiVetro adopted the UC2.0 practise within their company standards. 


 Geert Bellekens

Geert Bellekens is an acknowledged Enterprise Architect expert and has written numerous add-ins for Enterprise Architect, including the free open source EA Navigator and EA-Matic. Geert Bellekens has helped several of the larger Belgian organizations to define and document their modelling method, train and coach the modellers and develop supporting tools. He is also one of the founding members and a regular speaker on the EA User Group events.


Gillian Adens

Hippo Software 

Gillian Adens is director at Hippo Software, an authorised Sparx Systems training partner. Gillian studied joint honours Mathematics and Computer Science at Glasgow University and is a Chartered IT Professional Member of the British Computer Society. Gillian was one of the first adopters of UML and Sparx EA in the UK (using Sparx EA from V2 onwards). She is also an expert in BPMN and ArchiMate industry standard notations. Gillian currently provides formal training and consulting services to a wide range of organisations in finance, education, utilities, healthcare, travel and government market sectors.


 Graham Williamson


Graham Williamson is the Head of Business Systems Architecture for Interserve, a FTSE 250, international support services and construction company. Graham is responsible for advising, assessing, planning and governing transformations and optimisations to Interserve's business systems, applications and technology. In this role, Graham leads a team of internal and consultant Enterprise Architects, who together define Group technology strategies, standards and transformation programmes, as well as work with their federated divisions to architecturally guide, support and assure their significant change initiatives.



Guillaume Finance,


 After several years of experience in software programming, Guillaume has worked for over 10 years with Sparx Systems Enterprise Architect tool to build and maintain models for software projects, and produce functional and technical specifications based on the expected level of deliverables. Working at the business and technical levels, Guillaume liaises with the business stakeholders and development teams.  As a modelling and EA expert/consultant at VISEO, official Sparx Systems Value Added Reseller in France, Guillaume also provides support, expertise and coaching services on UML, SysML and Sparx EA. Guillaume runs training sessions on Sparx EA with UML or SysML. |   This email address is being protected from spambots. You need JavaScript enabled to view it.   Twitter: @umlchannel


Hans Natvig


Hans Natvig is a certified systems engineering professional (CSEP) with over twenty years' experience, mainly from the defense domain, practicing SE processes such as requirement analysis, requirement definition, architecture definition, detailed design, integration, verification, and validation. Hans experience of using Sparx EA started in 2006, including the development of system architectures using OOSEM, enterprise architectures using UPDM, and custom made MDGs.


Ian Mitchell

Ability Engineering

A long-standing EA user, business analyst mentor and teacher, Ian is the author of the popular eaDocX® document generator for EA, as well as being heavily involved with the design of Prolaborate.  He also shares his observations from 30+ years in IT at 


 James Cullen

Martin-Baker Aircraft Company

 James Cullen is a Systems Engineer at Martin-Baker Aircraft Company the world leader in the design and manufacture of ejection seats. He has gained his experience from a master degree in systems engineering and using EA to drive the change to model-based engineering within Martin-Baker.


 Jan de Liefde 

The Collective

 Jan de Liefde is working as a senior consultant for public and private parties. His working field is mostly related to Model Based (Systems) Engineering and Technical Management during the different stages of the System Life Cycle of Infrastructure systems such as tunnels, sluices, water surge barriers and metro.


   John Gladstone

Protean Electric

 John is a Senior Systems Engineer at Protean Electric and has been responsible for the development of the company’s Model-Based Systems Engineering Process for automotive Functional Safety applications (ISO-26262). He has more than 14 years’ experience of Systems Engineering, is a member of International Council on Systems Engineering (MINCOSE) and part of the UK MBSE Working Group.


Matthew Thomas

Principality Building Society 

Is a Solutions Architect at the Principality Building Society headquarters in Cardiff, where they have adopted TOGAF and Sparx EA to support its transformation programme.  Responsible for defining the structure of the Architecture Repository and curating much of the content, as well as defining workable approaches. Work began by addressing documentation debt and building a baseline architecture model, and using the model to perform impact and gap analysis on various target solution options.  Matthew has many years of using modelling tools in different environments, and is a Chartered Engineer with an Engineering Doctorate (EngD) gained in an industrial setting.


Peter Lieber

Lieber Lieber 

 Peter Lieber is a serial entrepreneur in the software industry and since September 2014, president of the Austrian Association of Software Industry ( He is committed to sharing his knowledge with students, entrepreneurs and managers. In his most relevant businesses: SparxSystems Central Europe ( and LieberLieber Software ( he is focused on model based systems and software engineering.   In his own words: "I am an extrovert promoter and results-oriented controller and director. It like creating new partnerships and relations. I like people that are talking with me and it is important for me to help and motivate others. I'm very self-motivated and I prefer doing thinks I really like. I need a lot of creative and open space. But I also need people doing the administrative tasks and people realizing the ideas.  My highest motivation is doing creative work with and around Enterprise Architect. (


Phil Chudley

Dunstan Thomas Consulting Ltd

Phil Chudley is a principal consultant at Dunstan Thomas Consulting Ltd. He has been using Enterprise Architect for over 10 years, and has vast modelling experience ranging from UML, BPMN and SysML. He has provided training consultancy for numerous organisations in the UK, Europe and the Middle East. These organisations cover sectors ranging from financial to aerospace and defence.  Phil has also developed two extensions for Enterprise Architect, BPMN Generator and EA Safe Delete.  Phil’s latest consultancy is the development of scripts for automated project workflow and validation /export of elements and relationships. 


Ramsay Millar, INTEGRATE iT 

Millar is a proven expert in the areas of business and enterprise architecture transformations involving the collaboration of business leaders, enterprise architects, business analysts, projects managers, and is a loyal Sparx Systems Partner since 2001.  Ramsay has demonstrated the ability to harmonize and bring together diverse skill sets meet time, budget, and the stated vision of the leaders he serves. Millar is involved in many successful enterprise transformation initiatives since 1989. He began his career as a business and technology transformation early adopter and is highly practiced in the areas of project management, business analysis, business architecture and enterprise architecture.  Ramsay offers his consulting practice, and mentorship workshops to a diverse international client base through INTEGRATE iT.  Ramsay shares “insights from the road” gathered during his many consulting and training events.


Richard Hilekes


Richard is a senior information analyst at DiVetro in the Netherlands. He has over 10 years of experience in IT. During this period he has fulfilled a broad spectre of roles at different customers. Currently Richard is working at Wigo4it as an information analyst and scrum master. In this project he is responsible for the requirements of automatic processing of inquiries for social welfare. Over the years Richard has worked with Enterprise Architect at different customers and DiVetro. He is always looking for the most practical way to use a case tool.


Stephen Channell

 Stephen is a freelance Technology Architect, specialising in Investment Banking risk pricing and trading.  He has used Sparx EA for ten years for Model Driven Architecture and has authored a number of tools ( ) to extend Sparx for application generation from models.


Terry Merriman

OAD Consulting Inc. 

Terry Merriman is the President and Chief Architect of OAD Consulting, Inc. He has over thirty years in software development and founded OAD in 2000 to provide consulting and training services in the enterprise architecture space. He has consulted with fortune 500 countries in the US and Europe, providing training, on the job mentoring, and consulting services on multi-million dollar projects. For the past twelve years, he has worked with clients to create architectural principles and guidelines along with supporting toolsets to make designing systems that conform to the principles and guidelines the easiest path to take. The result of this effort is Model Guardian, a profile and model management extension to Sparx System’s Enterprise Architect. Mr. Merriman first developed Model Guardian in 2005 and has continued to enhance it with new features that have been directly applied to OAD consulting engagements.


Tom Geerts


Tom is a Business Analyst / Information Architect at Atrias, a neutral consultation platform in the Belgian energy market that develops and optimizes the energy market processes and is currently realizing a federal Clearing House. He has 8 years of experience with Enterprise Architect and is familiar with modelling BPMN, UML and XML Schema, document generation, custom searches, metamodels, version control in TFS.  He strives to continuously improve and extend the use of Enterprise Architect within his organisation. He writes internal modelling standards, trains end-users and likes to share his EA knowledge and best practices.



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