About ISI

Leaders at every level, since 1991

Interior Systems, Inc., dba ISI Professional Services, is a Northern Virginia based Service-Disabled Veteran-Owned Small Business that provides our federal and commercial customers a comprehensive range of services and solutions.

1991Founded
100+Employees
100+Federal contracts
The ISI Professional Services team at work in their office.
Our vision is to succeed together by employing and inspiring excellence in all things, always.

The ISI Way

It’s not what we do but how we do it

At ISI, it’s not what we do but how we do it. We redefine ways to elevate standards and exceed expectations.

Since 1991, ISI’s strategy has been to meet the needs of our clients and exceed their expectations by using our customer-focused and performance-based processes. Our employees are passionate about their jobs, their customers and their company. ISI integrates its diverse capabilities, extensive experience and expertise to deliver customer-focused results.

InnovationNew ways to solve old problems
SolutionsBuilt for the client in front of us
IntegrityThe same answer in every room
Innovation, Solutions, and Integrity overlapping at the center to form the ISI Way INNOVATION SOLUTIONS INTEGRITY + + + THE ISI WAY
Our vision

Our vision is to succeed together by employing and inspiring excellence in all things, always.

Leadership

Leaders at every level

We believe that Leadership is paramount and foundational to every great company. We believe in delivering LEADERS AT EVERY LEVEL. Being a LEADER is not about making bold decisions, always having the last word, or about title.

01

Listen

Great leaders will always take time to listen.

02

Others first

They always place the organization and subordinates before their own individual success.

03

Trust

They clearly understand the importance of trust, credibility, and humility.

04

Own it

They believe in being responsible for everything that can go wrong and passing on praise to others for what goes right.

05

Character

Leadership is about character, which is defined through the eyes of those you are entrusted to lead.

Our team

Our most valuable asset is our people

Our most valuable asset, OUR PEOPLE, is the ultimate driver of success in helping our customers achieve mission success, operational excellence, and outstanding results and maintaining long lasting relationships.

ISI is uniquely able to respond anywhere and anytime; and, as our 30-year history illustrates, our deeply rooted relationships and success offer a low-risk solution to existing or emerging requirements. Your business is critical to our success. Our mission is to proactively exceed your expectations by aligning our solutions and resources with your unique requirements.

SDVOSB, SBA certified
Headquartered in Northern Virginia
2 GSA Federal Supply Schedules
Projects in 48 states
Christopher Lefebvre, President and CEO of ISI Professional Services.

ISI’s CEO, Christopher Lefebvre, a Marine Corps Veteran of campaigns in Iraq and Afghanistan, has instituted and maintains a priority of hiring Veterans to support our clients. We’ve found these Veterans demonstrate a core, can-do mentality, complimented by a fundamental sense of accountability and responsibility.

Tailored, Turn-key Solutions

Customized solutions based on a comprehensive understanding of unique customer needs and relationship management.

Partnership

Immediate commitment due to our holistic “Down in the Trenches” solidarity and anticipatory service delivery.

Project Continuity

Life cycle management benefits through optimized transition time, reduced turnover, and delivery on time and on budget.

ISI leadership

The people who run ISI

Christopher Lefebvre
Executive leadership

Christopher Lefebvre

President & CEO

Marine Corps Veteran of campaigns in Iraq and Afghanistan. Sets ISI’s veteran hiring priority and its standard for professionalism on every client site.

Wendy Ramos
Executive leadership

Wendy Ramos

Chief Operating Officer

Runs day-to-day operations across ISI’s practice areas, contracts, and people functions.

Advisory Services

David Stonehouse

David Stonehouse

Managing Director, Advisory Services
Caitlin Cunningham

Caitlin Cunningham

Senior Program Manager
Jennifer Shaw

Jennifer Shaw

Quality Assurance Manager
Nicholas Caskey

Nicholas Caskey

Facilities & Engineering Program Manager

Business Development, Contracts & Compliance

Catherine Niles

Catherine Niles

Managing Director, BD & Capture
Cliti Shafer

Cliti Shafer

Proposal Manager & FSO
Megan Shelton

Megan Shelton

Managing Director, Contracts & Compliance
Ellen Milliken

Ellen Milliken

Contract Coordinator

Finance

Michaela James

Michaela James

Managing Director of Finance
Barbara Martine

Barbara Martine

Accounting Manager

People Operations

Renee Shaffer

Renee Shaffer

HR Manager
Andrew Van Den Hoak

Andrew Van Den Hoak

Recruiting Manager
Amanda Paulson

Amanda Paulson

Employee Engagement Specialist

Career fields at ISI

Work hard. Be rewarded.

At ISI Professional Services we believe that everyone deserves an opportunity to be compensated well and take care of themselves both at work and outside of it. Pick a functional area to see what’s open.

View careers

Work with ISI

We strive to be your trusted partner

ISI has several agency-specific contracting vehicles as well as two GSA Federal Supply Schedules: Professional Services and Comprehensive Furniture Management Services.