Our Team

Mary Grubbs


Mary holds a Women Owned Business Certification. Over the years, she has worked on many different jobs, most notably the DC Water 500 year flood project in 2021.

Louis Marques

Director of Projects

Louis has been in the construction, masonry and grouting industry for over 35 years. He leads the LJS team with skill and experience.

Reynaldo Mejias


Rey has a strong background in management and construction, acting as a guide for his teams of technicians.

Douglas Baillie

Assistant Superintendent

Ryan Mackerley

Leak Seal Specialist

Efrain Rivera

Soil Stabilization Specialist

Niheim Crawford

Expert Waterproofing Technician

Mathew Polimeni

Bid Takeoff Specialist

Joshua Esdaile

Void Fill Specialist

Derek Cuello

Expert Waterproofing Technician

Flavio Oliveira

Expert Waterproofing Technician

Maurice Cason

Expert Waterproofing Technician
Call (973) 750-1988