About JS Global

JS Global leadership team.

JS Global is led by Chief Executive Officer Darren Blue, Executive Vice President Mike Geraghty, Chief Financial Officer TJ Guarino, Senior Vice President of Business Development Brandon Weidenfeller, Vice President of Design Matt Alexander, PE, Director of Capture John Reilly, and Human Resources Manager Lynn Weingarten. Together they direct cleared design, engineering, and construction for federal, defense, and intelligence facilities.

Meet the Leadership Team ↓About JS Global ↗

Executive Leadership

Who leads JS Global?

01 / Corporate

Darren Blue

Chief Executive Officer

Leads JS Global Holdings and its two practices, JS Global and Atlantic Design Group, as one company.

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02 / Construction

Mike Geraghty

Executive Vice President

Leads the Construction Group, from business development and estimating through delivery and closeout.

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03 / Corporate

Thomas (TJ) Guarino

Chief Financial Officer

Leads accounting, finance, and human resources, plus the company's banking, bonding, and audit relationships.

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04 / Corporate

Brandon Weidenfeller

Senior Vice President, Business Development

Leads business development and owns new project inquiries from first contact to the right delivery team.

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05 / Design

Matt Alexander, PE

Vice President of Design

Leads Atlantic Design Group, the architecture and engineering practice of JS Global, from Columbia, Maryland.

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06 / Business Development

John Reilly

Director of Capture

Leads capture for federal and infrastructure pursuits, from opportunity qualification through proposal and award.

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07 / Corporate

Lynn Weingarten

Human Resources Manager

Runs human resources for JS Global and Atlantic Design Group, from hiring through employee support.

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08 / Careers

Join the team.

Build secure facilities alongside the people behind them. See open roles across design, construction, and corporate.

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Leadership Structure

How is JS Global's leadership organized?

JS Global is organized as one enterprise with two practices. Corporate leadership sets direction, and each practice is led by an executive accountable for its delivery.

Corporate

The Chief Executive Officer, Chief Financial Officer, and Senior Vice President of Business Development lead strategy, finance, pursuits, and client relationships across the enterprise. Capture lead John Reilly and Human Resources Manager Lynn Weingarten support those functions. Meet CEO Darren Blue, CFO TJ Guarino, and SVP Brandon Weidenfeller.

Construction

Executive Vice President Mike Geraghty leads the Construction Group. See secure facility construction and self-performed trades.

Design

The Vice President of Design leads Atlantic Design Group, which keeps its own registrations and contract vehicles. See cleared architecture and engineering.

One Accountable Team

Why does leadership structure matter on secure work?

Design and construction teams coordinate inside one organization, so decisions do not wait on a handoff between firms.

Leadership remains accessible, and responsibility stays visible from early planning through operational readiness.

JS Global holds a Top Secret facility clearance, and Atlantic Design Group retains its own Top Secret facility clearance.

Much of the work cannot be photographed or discussed publicly. The results appear in facilities that operate as intended.

Leadership Questions

Answers about who leads JS Global.

Direct answers about the executives behind the enterprise and how to reach the right team.

01Who is the CEO of JS Global?

Darren Blue is the Chief Executive Officer of JS Global. He leads the enterprise across its Construction and Design practices and its corporate operations.

02Who is the CFO of JS Global?

Thomas (TJ) Guarino is the Chief Financial Officer of JS Global. He leads accounting, finance, and human resources, and manages the company's banking, bonding, and audit relationships.

03Who leads JS Global's design practice?

Matt Alexander, PE, is Vice President of Design. He leads Atlantic Design Group, the architecture and engineering practice of JS Global, based in Columbia, Maryland.

04Who leads JS Global's construction work?

Mike Geraghty, Executive Vice President, leads the JS Global Construction Group, including secure facility construction and self-performed trades.

05Who should I contact about a new project?

Project inquiries go to Business Development, led by Senior Vice President Brandon Weidenfeller, with Director of Capture John Reilly leading pursuit capture. Use the Request a Quote form, and Business Development will bring in the right design or construction team.

Start with the Operating Requirement

What must the facility make possible?

Bring us the mission, the security condition, the delivery constraint, and the outcome. We will bring the right JS Global leaders into the conversation.

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