GMP Contracting Ltd. specializes in heavy civil construction, bridge and structural concrete rehabilitation, concrete forming, marine structures, and roadwork projects. Our innovative approach and experienced team of Civil Engineers come together to successfully implement quality construction projects amounting to 100 capital projects to date, with an embedded environmental focus. Our full service engineering, design and construction expertise is offered across wide ranging projects with private and public organizations. We offer a collaborative work environment and the opportunity to widen one’s skill and grow professionally as well. We’re passionate about our business and believe in only quality and excellence with every project we undertake.


GMP Contracting Ltd. was established in 2008 by two partners Paul DiManno and Gianfranco Tamburrini with the goal of providing landscape construction services to residential and commercial customers across the Greater Toronto Area. In 2010, Joseph Reitano joined the team as a partner and the strategic partnership grew the business into new realms; to include Commercial General Contracting and Concrete Road Work projects for the public sector. Over the last 11 years, GMP Contracting has performed over 50 Capital Projects with a focus on heavy civil construction within various municipalities throughout Ontario; including the Greater Toronto area.


We believe that our success is a direct result of our core values; the guiding principles for our business conduct with customers and partners as the company organically grows and adapts.



  • Continuous Improvement
  • Innovation
  • Integrity
  • Communication
  • Job Satisfaction


We believe in creating a business environment that allows our team to thrive. We are committed to enabling them, so they can do their best work every day and on every project.


Joseph Reitano
Senior Partner, Construction Manager

Joseph has over 20 years of experience in the construction industry with extensive bridge and concrete formwork projects in his portfolio. His experience in managing large and complex heavy civil projects, accompanied with hands on experience has empowered GMP Contracting to continue to grow and become a leading bridge contractor in Ontario. Prior to joining GMP Contracting in 2010, he began his career as an owner operator for a family owned custom homes business, which constructed over 50 homes throughout the Greater Toronto Area. In his current role as Construction Manager, Joseph fosters a teamwork approach while overseeing quality control, optimizing production and maintaining team morale. Joseph approaches all projects with strategic focus and emphasis on maintaining a clear path towards achieving the project goals.
Joseph has a Bachelor of Applied Science and Engineering (Civil) from the University of Toronto, 2004

Paul Di Manno
Senior Partner, Chief Estimator.

Paul has over 20 years of experience in the heavy civil construction industry. He is knowledgeable in all phases of project management and delivery with extensive experience in a wide range of public, institutional and commercial projects. Pauls’ practical experience with a range of implementation strategies has provided him with the tools to successfully balance project requirements. He is an innovative problem solver, a thoughtful and collaborative manager and an effective communicator and decision-maker. Paul manages his projects through teamwork, motivation and a proactive approach with focus on maintaining project goals.
Paul has a Bachelor of Applied Science and Engineering (Civil) from the University of Toronto, 2004

Daniel Botelho
Project Manager

Daniel joined GMP Contracting in 2017 and has quickly become a valuable asset to the team with his versatile skillset. His 3 years of experience in performing takeoff analyses and calculating cost estimates for a drywall contractor has transitioned well into helping GMP Contracting throughout the bids and tendering process. As a Project Coordinator, Daniel is involved with assisting in all aspects of managing ongoing projects including tracking budgets and working in close liaison with clients. He has also taken on the role of Internal Auditor and will be a key component in helping GMP Contracting become COR™ Certified. His work ethic, enthusiasm, and attention to detail are what excel him to achieve project goals and create satisfied customers.
Daniel has a Bachelor of Applied Science and Engineering (Civil) from McMaster University, 2017.

Robert Di Manno
Project Coordinator and Junior Estimator

Robert joined GMP Contracting in 2019 and has becomes a valued member to the team with a divers skillset in business and project management.  With a background in entrepreneurship Robert has grew up in a construction based family and took that knowledge to build a business in real estate. It’s his interpersonal skills and knowledge of budgets that makes him mesh well with client and other representatives of projects. 

Robert has a Bachelor in Business from Ryerson University, 2009

Apply Now

GMP Contracting Ltd. is a leader in heavy civil construction, bridge and structural concrete rehabilitation, retaining walls, foundation walls, culverts, and marine structures, based in Toronto, ON.


We are always looking to expand our team and are currently looking to fill the following positions:

  • Site Superintendent
  • Junior Estimator
  • Civil Project Co-ordinator
  • Civil Project Manager

Contact Us

Main: 1-888-467-2019
Direct: 647-689-2433
Fax: 1-855-515-7397



208-90C Centurian Drive

Markham, ON   L3R 8C5

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