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Our People

Our People

The essence of Collaborative Structures Limited is our people

We invest in our employees, fostering the spirit of collaboration to grow and expand, while maintaining our commitment to a corporate culture that embodies open communication, passion, and personal growth. With a diverse and talented multi-generational team, we continue to strive toward total client satisfaction and excellence in all projects. Our product may be buildings, but our strength is in our people.

David Timlock

David Timlock, P.Eng., G.S.C.
dtimlock@collaborativestructures.com
519.658.2750

President, Founder

David Timlock, President of Collaborative Structures Limited, possesses over 30 years of experience in the Construction and Project Management field. His qualifications encompass work in all aspects of the construction industry, including consulting, Contractor, and Owner.

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Bill Zister

Bill Zister
bzister@collaborativestructures.com
519.658.2750

Chief Executive Officer

Bill joined Collaborative Structures in April 2018 with over 17 years’ of construction experience. Bill is a proven leader with a track record for exemplifying professionalism, encouraging collaboration and fostering communication.

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Josh Blackler

Josh Blackler, G.S.C.
jblackler@collaborativestructures.com
519.658.2750

Partner, Vice President

After graduating from Conestoga College’s, Architecture - Construction Engineering Technology (ACET) program, Joshua joined the CSL team in May 2006 as a Junior Estimator. As CSL was still in its infancy, Joshua drew on the experience of David Timlock and senior Project Managers to develop his skills.

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Jim Blair

Jim Blair, C.E.T., G.S.C.
jblair@collaborativestructures.com
519.658.2750

Partner, Director of Construction

Since his graduation from the Conestoga College ACET program with Honours, Jim joined CSL in September 2009 and continued to build on his childhood passion of construction.

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Justin Bender

Justin Bender, G.S.C.
jbender@collaborativestructures.com
519.658.2750

Partner, Director of Field Operations

Justin Bender joined our team full time after graduating from the Architecture – Construction Engineering Technology Co-op program at Conestoga College in 2008.

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Tim Jacques

Tim Jacques
tjacques@collaborativestructures.com
519.658.2750

Controller

Tim brings to our team over 30 years of finance and accounting experience from the manufacturing, automotive, distribution, and construction industries.

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Sam Salem

Sam Salem, P.Eng.
ssalem@collaborativestructures.com
519.658.2750

Senior Project Manager

Sam Salem is an accomplished Project Manager possessing over 25 years of experience in the construction industry in both Canada and Overseas. Upon graduating from Kuwait University, in 1987, with a degree in Civil and Structural Engineering, Sam worked as a Project Engineer until 1995.

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Andrew Reibel

Andrew Reibel, C.E.T.
areibel@collaborativestructures.com
519.658.2750

Project Manager

Andrew is a Certified Engineering Technologist, with over nine years of experience in ICI estimating and construction management of projects up to $30 million construction value.

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Sergio Lima

Sergio Lima, G.S.C.
slima@collaborativestructures.com
519.658.2750

Project Manager

Continuing a long standing career in Construction Management, Sergio joined our team with over 20 years of experience in the ICI sector, with significant commercial and industrial project management experience.

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Dan Dietrich

Dan Dietrich, G.S.C.
ddietrich@collaborativestructures.com
519.658.2750

Senior Project Manager

Dan Dietrich is an accomplished Project Manager possessing over 30 years of experience in the Industrial, Commercial, Institutional, and Multi- Residential industry. Upon graduating from Conestoga College’s Construction Engineering program in 1983, Dan worked as an Estimator and Project Manager until he founded his own company in 1992.

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Lynn Duncan

Lynn Duncan
lduncan@collaborativestructures.com
519.658.2750

Junior Project Manager

Lynn Duncan joined Collaborative Structures after graduating from the Architecture Construction Engineering Technology program at Conestoga College. Lynn is a highly detail-oriented, self-motivated leader that is quickly advancing within our organization.

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Stefanie Rajnak

Stefanie Rajnak
srajnak@collaborativestructures.com
519.658.2750

Junior Project Manager

Stefanie joined Collaborative Structures in June of 2018 with over 7 years’ of construction experience. Stefanie is highly detail-oriented, a self-motivated leader, and exemplifies strong communication skills. She possesses a strong working knowledge of ICI construction, Ontario building codes, and software programs associated with the preparation of construction documents and drawings. Her superior communication and interpersonal skills make her a strong asset to the CSL team as she consistently exceeds client expectations.

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Colin Thomson

Colin Thomson, G.S.I.
cthomson@collaborativestructures.com
519.658.2750

Junior Project Manager

Colin joined Collaborative Structures in June of 2018, with over 9 years’ of experience in the construction industry. Upon graduating from Architectural Technology (Co-op Program) at Sheridan College, Colin worked as a Building Information Modeling (BIM) Coordinator. 

Colin also has extensive experience with Government Infrastructure and maintains a high level of quality control throughout his projects.

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Garry Bennett

Garry Bennett, G.S.C.
gbennett@collaborativestructures.com
519.658.2750

Health & Safety Manager

Garry Bennett joined Collaborative Structures Limited in July 2018 with more than 25 years’ experience in the construction industry. Garry has a proven track record to be a reliable and knowledge Health and Safety Manager. He has experience creating safe and understandable safety programs; it is a great asset to have him manage the onsite and in-office safety for Collaborative Structures Limited.

Nancy Sebring

Nancy Sebring, G.S.C.
nsebring@collaborativestructures.com
519.658.2750

Health & Safety Coordinator

Nancy has proven to be a reliable and knowledgeable Health and Safety Coordinator as she is responsible for managing the on-site and in-office safety for Collaborative Structures Limited. With over 10 years of infield experience, and seven years working closely with the Canadian Food Inspection Association (CFIA) to create safe and understandable safety programs, it is a great asset to have her.

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Rachel Fletcher

Rachel Fletcher
rfletcher@collaborativestructures.com
519.658.2750

Office Manager

Rachel joined Collaborative Structures in September 2009 and has held various positions throughout her time here, including but not limited to: contract administrator, IT, marketing, and office administrator. Her superior knowledge of CSL’s inner workings makes her an exceptional problem solver and a great resource.

Laura Hansen

Laura Hansen
lhansen@collaborativestructures.com
519.658.2750

Human Resources Manager

Laura brings with her over 10 years of human resources generalist experience in diverse industries including construction, manufacturing, executive search, consulting, and not for profit sectors. Laura manages the internal human resources of Collaborative Structures through effective recruitment, training, development, and influential internal employee relations undertakings; geared at fostering a culture of collaboration to meet organizational objectives.

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