Security. IT Support. Infrastructure.

Circulent | Managed Services

Managed Services

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Circulent | Managed Security

Managed Security

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Circulent | Backup & Disaster Recovery

Backup & Disaster Recovery

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Free estimate in one business day, including a FREE Essential Network Audit. Or call one of our offices for more information.

Why Choose Us?

Circulent | AboutMarcus Lee, CEO

We INVEST in the relationship with our customers

We distinguish ourselves by investing in our clients right from the start. We listen, assess, and react to their needs. As a result, they get superior service, fewer problems and pay one fixed price per month for unlimited IT support.

Why should you hire us?

Our clients pay the same price whether we work 1 hour or 1000 hours a month for them. The sooner we INVEST in the client and understand what’s under the hood, the more efficient we become. We have an incentive to get the job done right the first time! If you are looking for an IT services firm who cares about your business, then you’ve come to the right place.

Our Mission

Circulent, located in Darien, CT, was founded in 2003 by Marcus Lee. Under Mr. Lee’s direction, Circulent has remained dedicated to providing the state-of-the-art technology support, products and service. This level of service allows clients to get ahead of the competition and achieve greater success. Circulent’s focus is on Infrastructure-as-a-Service (IaaS), which gives companies the overarching structure to leverage technology over the long term, ensuring they are more profitable and productive.

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See what other business owners are saying about us

Thanks to Circulent, the entire burden of IT support has been taken off my back, and I don’t have to worry about security threats or downtime. Now we are getting regular Microsoft updates, virus updates, spyware is being scanned and removed, the temporary files are getting cleaned up, and our backups are being taken care of. It’s really helped speed up our network, our programs run better, and we don’t have the recurring problems that we had in the past.

Gary Piantedosi
Founder & Principal, CBP

I’ve been working with Circulent since 2012. They are always professional, and respond very quickly to our problems. Their willingness to help (no matter how small our problem) tells us that we are important to them; and that’s a great feeling! Best of all, they’ve made all of our systems, including backups and firewalls, run without a hitch.

Norman Grill
Managing Partner, Grill & Partners

The response time by Circulent is fantastic. Plus the findings from their Network Security Audit proved very helpful. Armed with that information we can now prioritize which IT projects we need to focus on in the short & long term.

Danny Lyne
Partner & CPA, Dylewsky, Goldberg & Brenner

Circulent delivers friendly and dependable service. When we need to call them, they’ve been awesome to deal with and the service has been fantastic. They’ve bailed us out from under IT problems, so I know we can count on them. I feel confident that we have a dependable company to call on when an issue arises!

Mario Bruni
President, Bruni & Campisi

Circulent truly appreciates and understands what is needed for a business to be productive. We always appreciate and respect the level of personal and professional dialogue with the Circulent staff. This provides us with a sense of trust and confidence. Their work demonstrates the highest quality and expertise, and we are confident that any computer problem (no matter how big or small) can and will be repaired.

Roy Cary
Partner, Chief Land Surveyor, S.E. Minor & Company

Circulent really does provide astoundingly good customer service. If there’s an issue I can generally get it resolved very quickly and in a very user-friendly way, and that’s quite special. Circulent frees management to focus on core business, which is the basis for a good outsourcing model.

Stephen Desloge
President, Rockwell Art & Framing

Our firm hired Circulent years ago to handle our IT needs. Circulent was diligent and professional in implementing standards and security protocols. The Circulent Team was always responsive to our needs and ensured our IT was always operating so we could serve our clients.

Doug Bayer
Managing Partner, Bayer & Black, P.C.

Having Circulent handle our network has allowed me to focus my attention on the business matters at hand. I know without any doubt that if something is wrong, someone on Marcus’ team will be here to fix it. If the problem is complicated, their knowledge of the inner workings of our business will aid in their suggestion for a solution. Circulent is always looking out for our success without regard to how it will benefit them personally. A rare quality in a personal or a business relationship.

Paul Bochicchio
Vice President, Eveready Transportation

Everything went great with the new network set up. Definitely will be using Circulent again when the need arises.

Rob Frangione
Principal & Founder, Frangione Engineering

Marcus is a valued resource with keen comprehensive insight across the Total IT Landscape. Working with Marcus and his group allows your business to keep focused on adding value to your clients and continue to acquire new ones. Why wouldn’t you discuss your technology issues and challenges with Marcus?

Adrian Rosati
Business Development Officer, EnRe Properties

Since Circulent has installed and serviced our network it has run extremely well. With regular monthly maintenance and occasional software upgrades the network has run flawlessly with no emergency downtime or lost data. My employees are also very happy to work with Circulent because of the prompt responses to their questions, and their investment into our relationship. All in all I would highly recommend Circulent’s services to any business.

Jim Meyers
CFO, Management Resources of America

I cannot say enough great things about the customer service at Circulent. They have gone above and beyond business interactions. They have gotten to know our staff personally, and they support this non-profit organization 100%. They offer pleasant quick support, patient guidance, and efficient service. Thank you, wonderful staff and team, at Circulent!!

Bob Orabona
Chief Operating Officer, Friends of Animals

General Questions & FAQ

General Questions

We are a Managed Service Provider (MSP) located in Darien, CT.
We provide unlimited IT support at a fixed price. The price is based on how many of what types of devices are supported. (i.e PC's, servers, network devices, etc.)
Companies that want to outsource their IT support. They do this because we are experts - faster, better, and cheaper than in-house solutions.
We act as the IT department. This includes 24x7 support, network monitoring, projects, and upgrades. We even source new equipment such as new PC's, laptops, and servers. We manage our client's data backups, and IP phone systems.
We INVEST in the relationship. Our clients pay the same price whether we work 1 hour or 1000 hours a month for them. The sooner we INVEST in the client and understand what's under the hood, the more efficient we become. We have an incentive to get it right the first time! We have skin in the game!


Fairfield, New Haven, Westchester, and Bergen Counties plus all New York City boroughs. Basically the NY Tri-State Area.
  1. They experienced a recent unplanned outage.
  2. They receive a lot of spam.
  3. They recently had a security breach (i.e. virus, disgruntled employee, etc.)
  4. They frequently lose their internet connection.
  5. They have a very old phone system.
  6. Their server room looks like a total disaster.
  7. They talk negatively about their existing IT team.
  8. Their outsourced IT service is slow to respond, or provides poor service.
  9. They are considering hiring a full-time IT employee.
A privately held company with 5 to 1,000 employees.
They are willing to take advice, willing to be educated, and have excellent relationships with partners.

More Questions?

Call us in Darien CT at 203-357-5000 or in NYC at 212-781-2000.