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Our People

Spread across over 60 cities, our team is a global collective of urban experts in design, architecture, engineering, civil, transportation, urban geography, real estate, landscape, communications, software development and so much more. These are the people defining the cities of tomorrow.

Supporting our global team of 3,500 difference makers is IBI’s Leadership team, setting out a compelling vision and guiding IBI Group towards the future.

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Leslie Ackerman

Associate | Manager, Architecture
Toronto, ON

Leslie Ackerman
#Associate | Manager, Architecture# #All# #Architecture# #High Rise Residential# #Residential# ## #Living+# #Residential# ##
Toronto, Ontario, Canada
Mrs. Ackerman graduated on the Dean’s List from Ryerson University in 2008 with a Bachelor of Architectural Science. She has obtained her Project Management Professional (PMP)® and LEED® Accredited Professional credentials. With over 12 years of experience in high-rise residential design, Leslie has managed various condominium, rental building and school residence projects. Her involvement ranges from feasibility and conceptual design through to construction administration.
#North America#
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Zibby Petch

Associate Director | Practice Lead, Active Transportation
Hamilton, ON

Zibby Petch
#Associate Director | Practice Lead, Active Transportation # #Active Transportation# #Transportation# ## #All# #Bridges, Roads & Highways# #Transportation# ## #Mobility+# #Transportation# ## #Transportation# #Transportation Engineering# #Transportation# ## #Transportation Planning# #Transportation# ##
Hamilton, Ontario, Canada
Zibby is a transportation planner and licensed engineer whose work focuses on active transportation, complete streets and urban street design. She regularly collaborates on multi-disciplinary teams to bring a pedestrian and cycling perspective to planning and design projects, and is a certified Road Safety Professional (RSP1).
#North America#
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Peter Lang

Associate | Architect
Vancouver, BC

Peter Lang
#Associate | Architect# #All# #Architecture# #Community / Recreational Facilities# #Institution# #Civic & Government# ## #Healthcare+# #Healthcare# ## #High Rise Residential# #Residential# ## #Higher Education# #School# #Education# ## #K-12 Education# #School# #Education# ## #Learning+# #School# #Education# ## #Library# #Institution# #Civic & Government# ## #Living+# #Residential# ## #Low Rise Residential# #Residential# ## #Master Planning# #Placemaking# #Planning & Urban Design# ## #Mid Rise Residential# #Residential# ## #Mixed Use# #Commercial# ## #Placemaking# #Planning & Urban Design# #Placemaking# ## #Policy & Design Guidelines# #Residential# #Seniors Communities# #Residential# ## #Specialized Learning# #School# #Education# ##
Vancouver, British Columbia, Canada
Peter Lang is a Registered Architect, an insightful designer and master planner with 35+ years of professional experience, who translates project programs into memorable urban, resort and educational experiences and inspirational buildings. Along with multidisciplinary experience in most building types, Peter has also focused specialties in both Hospitality/Resort and Educational master planning, approvals negotiation and facility design. He has authored the design of projects throughout British Columbia, the United States, the Middle East and Asia, with an extensive portfolio of projects in Whistler B.C. Peter is committed to high quality design and documentation, to exploring new inclusive educational environments for all learners of the 21st century and beyond, and in creating compelling resort experiences and buildings that distill and capture the sense of a place. Peter joined IBI Group in 1997 and holds a Bachelor of Architecture degree from the University of British Columbia as well as a BA (Arts and Sciences) from the University of Toronto.
#North America#
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David Paterson

Associate Director | Practice Lead, Design Technology
Toronto, ON

David Paterson
#Associate Director | Practice Lead, Design Technology# #All# #BIM & 3D Visualization# #Civic & Government# #Institution# ## #Civil Infrastructure# #Design Build# #Design Technology# #Education# #School# ## #Energy Solutions# #Green# #Heritage / Historic Preservation# #Hospitality# #Commercial# ## #Industrial# #Information & Communications Technology# #ICT# ## #Landmark Events# #Special Events# ## #Maintenance Facilities# #Transportation# ## #Mixed Use# #Commercial# ## #Mobility Hub# #Transportation# ## #Office# #Commercial# ## #Operations Centre# #Transportation# ## #P3# #Parking# #Parks# #Institution# #Civic & Government# ## #Placemaking# #Policy & Design Guidelines# #Research & Development# #Residential# #Retail# #Commercial# ## #Revenue / Tolling# #Transportation# ## #Spiritual Places# #Institution# #Civic & Government# #Church# ## #Stadium / Athletic Facilities# #Institution# #Civic & Government# ## #Systems Integration# #Systems# ## #Transit Oriented Development# #TOD# ## #Transportation# #Traveller Information# #Transportation# #511# #ATIS# #Advanced Traveller Information System# ## #Visualization# #BIM & 3D Visualization# ## #Wayfinding & Signage#
Toronto, Ontario, Canada
https://www.linkedin.com/in/david-paterson-14567083/
David Paterson is responsible for coordinating the efforts of the Toronto visualization group aiming to produce 3D conceptual design models, high quality 3D renders, animations and virtual reality allowing our clients to easily envision their finished projects. His efforts extend beyond Toronto to engage and collaborate globally, connecting a network of over 50 visualization specialists scattered across IBI Group offices. David’s focus remains on all aspects of a project’s lifecycle, bringing these solutions to file whether for proposals, detail design coordination, or the visualization of completed projects.
#North America#
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Santosh Mishra

Director | Sr. Practice Lead, Transportation Engineering
San Francisco, CA

Santosh Mishra
#Director | Sr. Practice Lead, Transportation Engineering# #All# #Engineering# #Leader# #Mobility Hub# #Transportation# ## #Mobility+# #Transportation# ## #Multi-Modal Transportation# #Transportation# ## #Operations# #Project / Programme Management# #Research & Development# #Software as a Service# #SaaS# ## #Subject Matter Expert# #Systems# #Systems Integration# #Systems# ## #Traffic Engineering# #Transportation# #Traffic Management# ## #Transit Facilities# #Transportation# ## #Transit Management# #Transportation# ## #Transit Technology# #Transportation# #ITS# #Intelligent Transportation Systems# ## #Transportation# #Transportation Engineering# #Transportation# ## #Traveller Information# #Transportation# #511# #ATIS# #Advanced Traveller Information System# ## #Wayfinding & Signage#
San Francisco, California, United States of America
https://www.linkedin.com/in/smishra-transit
Santosh Mishra has over 15 years of experience with a specialization in transit technology, consulting for all transit modes. Santosh’s work encompasses planning, procurement and implementation of a full range of transit technologies that address the full spectrum needs of a transit agency and to date, he has assisted more than 50 agencies nationwide. Apart from transit technology deployments, Santosh has significant expertise in large transportation data (transit and non-transit) acquisition, management and utilization and was invited to write a guest article in the Mass Transit Magazine under Best Practices column. Santosh also has significant experience in transportation technology research and evaluation and co-authored TCRP Project A-31 Transit, Call Centers and 511: A Guide for Decision Makers, and TCRP Project J-09, Task 12: ‘New and Emerging Technologies’. Further, he has led several tasks related to recent USDOT research and demonstration projects, including United We Ride/Mobility Service for All Americans and Connected Vehicle/Dynamic Mobility programs.
#North America# #Pacific West#
Visit Demetrius Yannoulopoulos's Profile
Demetrius Yannoulopoulos

Director | Office Lead
Ottawa, ON

Demetrius Yannoulopoulos
#Director | Office Lead# #All# #Civil Engineering# #Civil Infrastructure# ## #Civil Infrastructure# #Development Engineering# #Engineering# #Leader# #Municipal Infrastructure# #Civil Infrastructure# ## #Office Lead# #Water / Wastewater# #Industrial# ##
Ottawa, Ontario, Canada
https://www.linkedin.com/in/demetrius-yannoulopoulos-83277286
Demetrius Yannoulopoulos is a Professional Engineer in Ontario with over 30 years of experience in civil engineering in both Land Development and Municipal Engineering. He is currently Project Director for a number of land development engineering studies and detail design projects, all based out of the Ottawa office. His Municipal Engineering experience includes design of road and infrastructure renewal projects in both Ottawa and Kingston. He has served as Municipal Engineer for various smaller municipalities reviewing development plans and providing general engineering advice to councils. public sector projects include infrastructure renewal for DND, and Correctional Services Canada. In addition to the various projects Demetrius has completed over the years, he has also assisted the civil engineering field in both the public and private realms by sitting on various engineering committees and serving on the executive of the Kingston Home Builders Association.
#North America#
Joseph Clark

Associate | Manager, Architecture
Bakersfield, CA

Joseph Clark
#Associate | Manager, Architecture# #All# #Ambulatory Care# #Healthcare# ## #Architecture# #BIM & 3D Visualization# #Civic & Government# #Institution# ## #Commercial# #Courts# #Institution# #Civic & Government# ## #Design Build# #Education# #School# ## #Learning+# #School# #Education# ## #Office# #Commercial# ## #Police & Fire Stations# #Institution# #Civic & Government# ## #Residential# #Retail# #Commercial# ##
Bakersfield, California, United States of America
Licensed in 1990, I am a California architect with over 30 years of experience on projects throughout the State, primarily in the central San Joaquin Valley of California. I have experience in a variety of project/building types, with approximately 11 years of experience having been focused on K-12 educational projects with some Community College experience. Other project types include: commercial office, government office, medical office, skilled nursing, industrial warehouse, hospitality, custom homes, single/multi-family residential and farm labor housing. I have designed projects from a predetermined program, as well as, assist the client by assessing their needs and preparing a program to suit situation. My experience includes: facility planning, conceptual design, construction documentation, construction administration and project closeout. My design philosophy focuses on meeting the Client’s need with creative and practical solutions.
#North America# #Pacific West#
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Konstantinos (Kostas) Paslis

Associate | Manager, Infrastructure
Athens, Greece

Konstantinos (Kostas) Paslis
#Associate | Manager, Infrastructure# #All# #BIM & 3D Visualization# #Civil Engineering# #Civil Infrastructure# ## #Civil Infrastructure# #Design Build# #P3# #Parking# #Rail# #Transportation# ## #Transportation# #Transportation Engineering# #Transportation# ##
Athens, Greece, Europe
https://www.linkedin.com/in/kpaslis/
Challenge Everything
Konstantinos is a Civil infrastructure Designer with extensive knowledge in Project Management processes and Scrum methodology. With more than 20 years of experience, he has been engaged in Railway, Metro, Motorway and Light Rail projects in Southeastern Europe, Middle East, and North America. He has participated in interdisciplinary Design Teams having the role of Team Leader, Project Designer, Project Manager, Scrum Master, 3D visualizer, In-house Software Trainer and Design Checker.
#Europe#
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Tetyana Tymchyk

Associate | Manager, Intelligent Systems
Toronto, ON

Tetyana Tymchyk
#Associate | Manager, Intelligent Systems# #Advanced Traffic Management System# #Transportation# #ATMS# ## #All# #Civil Engineering# #Civil Infrastructure# ## #Systems# #Systems Integration# #Systems# ## #Transit Technology# #Transportation# #ITS# #Intelligent Transportation Systems# ##
Toronto, Ontario, Canada
Tetyana is a Project Manager in the intelligent systems group based out of Toronto Campus. She holds a B.Eng. and Masters of Engineering from Ryerson University in Toronto. Her 10-year career with the firm has been focused in intelligent transportation and transit systems technology, design, construction technical support, operations and maintenance for such clients as Ministry of Transportation Ontario (MTO), 407TR, Metrolinx and TTC. Some of her most notable projects include the design of an advanced traffic management system (ATMS) on Hwy 427, Highway 401 EB Collector rehab from Jane Avenue to Avenue Road, Windsor-Detroit Tunnel plaza improvements, Variable Message Signs for 407ETR and Toronto Transit Commission CAD/AVL. She received her Ontario professional engineering license in 2014.
#North America#
Visit Tetyana Tymchyk's ProfileVisit Bill Conboy's Profile
Bill Conboy

Principal | Education, Buildings
Portland, OR

Bill Conboy
#Principal | Education, Buildings# #All# #Architecture# #Education# #School# ## #Leader# #Learning+# #School# #Education# ## #Project / Programme Management#
Portland, Oregon, North America
Bill has over 30 years of managing school design and construction projects, where he uses his design and project management abilities to ensure success for the districts with whom he collaborates. Bill believes in staying actively connected on projects from planning through construction, to help ensure quality, consistency, and communication are maintained over the life of the project.
#North America# #Pacific West#
Visit Ainsley Brown's Profile
Ainsley Brown

Associate Director | Practice Lead, Transportation Planning
Edmonton, AB

Ainsley Brown
#Associate Director | Practice Lead, Transportation Planning# #All# #Civil Infrastructure# #Master Planning# #Placemaking# #Planning & Urban Design# ## #Municipal Infrastructure# #Civil Infrastructure# ## #Project / Programme Management# #Transportation# #Transportation Engineering# #Transportation# ## #Transportation Planning# #Transportation# ##
Edmonton, Alberta, North America
Ainsley is a transportation planning engineer with 19 years of experience in transportation planning and project management, with expertise in transportation policy and master plan implementation. Ainsley has worked on a wide range of projects from policy development and transportation impact assessments through to design and construction. She has a specialty in multi-modal transportation, renewal projects, Complete Streets, and collaborative processes to develop principles and goals for project success. With training in GBA+ as well as diversity and inclusion, Ainsley seeks to develop transportation infrastructure which is accessible and welcoming for all users. She is a member of the Association of Professional Engineers and Geoscientists of Alberta and the Institute of Transportation Engineers.
#North America#
Visit Elizabeth Vieweg's Profile
Elizabeth Vieweg

Associate Director | Practice Lead, Intelligent Systems
Toronto, ON

Elizabeth Vieweg
#Associate Director | Practice Lead, Intelligent Systems# #All# #Civic & Government# #Institution# ## #Landmark Events# #Special Events# ## #Operations# #Planning & Urban Design# #Placemaking# ## #Project / Programme Management# #Public Outreach# #Strategic Planning# #Subject Matter Expert# #Transportation#
Toronto, Ontario, Canada
Elizabeth Vieweg is a passionate, goal-oriented leader with 20 years of experience managing multiple portfolio events in fast-paced national and international Games environments. This is bolstered by additional experience as a senior manager in the sport, arts and health sectors. Elizabeth is also a skilled negotiator, collaborator and integrator with diverse groups of stakeholders, including municipal and provincial levels of government, community leaders, First Nations, facility/venue owners, games host societies, senior management, and volunteers.
#North America#
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