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.

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Teams in 5 states
- and growing

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

Meet your building’s
ground support.

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Rosario Mejia

Area Manager, Janitorial & Concierge Division - Florida Division
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Moshe Colin

Payroll Specialist
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Raymond Burks

Marketing Coordinator
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Joseph Rosenbaum

AP Assistant
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Sruly Wachs

Area Manager, Route Crew
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Mattis Berger

CFO
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Ben Basch

Business Development Manager
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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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Chany Bernat

COO
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Itsy Maytas

Director of Business Development
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Jonathan Kessler

Executive Vice President (EVP)
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Karen Prieto

Director of Janitorial Division
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Jenny Caba

Director of Concierge & Security Division
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Nick Oren

Director of Operations & Business Development / Florida Division
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Yudi Begun

Payroll Administrator
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Natalie Gonzalez

Payroll Assistant
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Jojaira Arias

Human Resources Manager
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Paula Ramirez

Administrative Officer
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Avi Greenbaum

AR Administrator
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Shira Levy-Haim

Administrative Officer
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Usher Gross

Accounting & AP Administrator
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Sol Berkovitz

AR Assistant
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Henry Rodriguez

Area Manager, Concierge & Security Division
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Sylvia Kendrick

Area Manager, Concierge & Security Division - New Jersey/PA Region
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Damaso Medrano

Area Manager, Concierge & Security Division
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Juan Ruiz

Area Manager, Janitorial Division
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Jay Perez

Area Manager, Concierge & Security Division
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Daniela Garcia

Operations Manager, Janitorial Division
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Kelly Rodriguez

Area Manager, Concierge & Security Division
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Reymond Hidalgo

Area Manager, Janitorial Division
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Quadir Lewis

Security & Construction 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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Motty Oliel

Area Manager, Janitorial & Concierge Division - Florida Region
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Esperanza Nunez

Regional Training Specialist, Janitorial Division
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How can your property run better?

Let’s find out together

Contact us