Build confidence
with GSS.

When you present tenants, visitors, and clients with a safe and clean building – and when employees are attentive and dressed well – you build trust in yourself, your abilities, and your facility. Trust GSS to help you put your best foot forward, always.

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Little details leave
big impacts.

Ground level services are key to the smooth operation of a building and so at GSS we take tremendous pride in delivering those services reliably and well.

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Eliminate the
unexpected.

We know you struggle to juggle multiple moving parts every day. That’s why we’re on a mission to ensure our services are predictable, reliable, and run like clockwork.

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From humble beginnings
to property partners.

GSS got its start in 2007 as a security firm serving local businesses and buildings. We soon earned a sterling reputation for pleasant, professional, and reliable teams, and our business grew. Today, we’re a robust facility service provider with local teams in New York, New Jersey, Connecticut, Pennsylvania, Florida.

Our commitment to our clients is legendary. We’re so much more than just ‘service providers’: we’re your reliable, fast-moving, and responsive partner, here to help you manage your facility more efficiently.

Why are we different

Experience can’t be taught.
We’ve earned ours.

15+

years’ experience

Our executive team has over a decade of experience owning, managing, and operating buildings across multiple sectors.

Complex, Detailed Knowledge

We’re adept at navigating the ins-and-outs of all regulations and compliance standards, including 421-tax abatement and wage control.

20+

industries

Each industry has its own regulations, needs, and nuances. We understand them all because we’ve worked in them all.

Meet your building’s
ground support.

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Isaac Weiss
CEO & Partner
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Abe Grunhut
President & Partner
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Mayer Leibovitz
Controller
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Itsy Matyas
Director of
Business Development
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Jenny Caba
Director of Concierge & Security Division
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Karen Prieto
Director of Janitorial Division
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Hugo Salazar
Director of Route Crew Division
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Ranaldo Bennett
Office Manager
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Elmis Erazo
Sproost Manager I
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Yudi Begun
Payroll Administrator
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Avi Greenbaum
AR Administrator
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Usher Gross
Accounting & AP Administrator
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Abraham Reich
AR Assistant
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Olivia Bayona
Executive Assistant
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Claudia Garcia
Office Administrative Support
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Esperanza Nunez
Regional Training Specialist
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Damaso Medrano
Area Manager, Concierge & Security Division
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Kelly Rodriguez
Area Manager, Concierge & Security Division
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Henry Rodriguez
Area Manager, Concierge & Security Division
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Quadir Lewis
Security Operations Manager, Security Division
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Loreli Andrade
Area Manager, Janitorial Division
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Alina Dominguez
Area Manager, Janitorial Division
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Daniela Garcia
Area Manager, Janitorial Division
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Katherin Bayona
Area Manager, Janitorial Division
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Teams in 5 states
- and growing

  • New York
  • New Jersey
  • Connecticut
  • Pennsylvania
  • Florida

How can your property run better?

Let’s find out together

Contact us