About Ontech Systems

Founded in 2004 and located in Menomonee Falls, Ontech Systems provides comprehensive technical solutions for small and medium-sized businesses throughout Greater Milwaukee.

Free Network Discovery

Years in Business

Client Retention Rate

Vendor Relationships

Mark Dohnal – President, Mike Piotrowski – Owner

Is Your IT Infrastructure Working With…or Against You?

To offer the most functional, reliable, and cost effective solutions for today’s businesses, we have partnered with industry leaders to provide our clients the most up to date solutions on the market.

Since 2004, we have achieved a 98% client retention rate – one of the highest retention rates in our industry. Ontech provides IT support and consulting to all of the Greater Milwaukee area.

Four Primary Service Areas

Our dedicated Account Teams will design a plan to help your business achieve your upcoming IT goals.

Network Related Projects

Server and SAN Setup & Migrations, Infrastructure Upgrades, Azure & Office 365 Migrations, Network Security Assessments, VoIP On premise and Hosted Solutions, etc.

Managed Services

Proactive IT Support allows our service team to proactively monitor, manage, and troubleshoot, 24×7, across your network devices users. Servers, Infrastructure, PC’s, MAC’s, Mobile Devices and User Help Desk are available.

Hourly IT Support

Proactive onsite or remote support with 1 of our local technicians. Can also be combined with Managed Services to create a hybrid IT support model that best fits your needs and budget.

Hardware & Licensing Sales

Purchasing, License Management, Asset Management.

Don’t Settle For Sub-Par IT Support

At Ontech Systems, we pride ourselves on offering 4 things that separate us from the competition:

Communication Skills – We speak a language you can understand and our techs are very accommodating towards staff.
Response Time – You’ll get a phone call/email within an hour during normal business hours.
Pro-active approach – we’re not a break/fix firm. We take into consideration your company’s growth outlook as well.
No Long Term Contract – We don’t lock our clients into long-term contracts. If you’re not happy with our services, simply let us know.

As a small business, you are in a unique position that requires you to juggle more responsibilities than larger companies. When technology fails, you are often faced with difficult decisions outside your area of expertise. That’s why in addition to our IT support services, we take the guess work out of planning and implementing solutions through small business IT consulting.

Our IT support and services have been rated 5 / 5 based on 10 testimonials from our clients.

Management/Leadership Team

MARK DOHNAL

President and Partner

JACKIE BUEHLER

Office Manager

MORGAN HERRICK

Technical Service Manager

JARED OLSON

Cloud Services and RMM Manager

MIKE PIOTROWSKI

Founder and Partner

Ontech News & special promotions

Ontech is Celebrating 15 Years of Service!

Mar 12, 2019

Ontech Systems is celebrating 15 years of providing IT support and servicing small to medium sized businesses in Southeast Wisconsin this March! A special thank you to all of our clients and vendors who have supported us along the way! The relationships and trust we...

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5 Simple Steps to a Millennial-Friendly Network

Apr 29, 2019

The millennial generation is different in many ways, from its reluctance to invest in the stock market in the wake of the Great Recession to its preference for experience over material goods. But for businesses, there are other, more important differences to consider....

Introducing Webroot Enhanced Security Training

Apr 3, 2019

Cyber security is a top priority for most businesses, and if it isn’t, it should be. Cyber security basics can protect your business from cyber threats through a layered security approach. One of the most important fundamentals of cyber security involves educating...

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Ontech Appearances on Fox 6 News

Fox 6 News sat down with Ontech’s own Jared Olson to get an IT perspective on a cyber-attack targeted at Milwaukee’s own Bradley Foundation. Watch the full story below or check out the news release online.

On a separate occasion, Fox 6 News turned to Ontech’s senior consultant John May for security expertise on another story regarding email security.

Ontech Systems, Inc

Greater Milwaukee IT Support
N85W16186 Appleton Ave
Suite A
Menomonee Falls, WI 53051

Hours: M-F 8am-5pm

Phone: 262-522-8560

Areas We Serve: Milwaukee, Waukesha, Wauwatosa, Mequon, Menomonee Falls, Brown Deer, Hartford, Brookfield, West Bend, Germantown

Bryan Clark

13:30 16 May 19

Excellent service, tech support goes above and beyond the call of duty.

khaled Salem

22:26 15 May 19

Amazing people, techs, and management. There is a bright future for anyone having the pleasure of working with Ontech.

Kelli Feucht

13:55 21 Aug 18

We have been utilizing Ontech for almost 3 years now. They have been great with response time to service calls and are very knowledgeable with HIPAA and Security which is a very important part of our business. They stay on top of current requirements and recommend appropriate software/hardware when needed/required.

Boyd Hunter

19:17 14 Aug 18

Our company has been with Ontech Systems, Inc. for many years. Scott Schepp is our Tech. No matter what the issue, he is there for us, and extremely helpful. He explains things in a way a "non techy" person is able to understand. Scott goes out of his way to ensure that we are taken care of immediately and follows up on all of our questions, no matter how small, in a professional manner. Highly recommend!

Stephanie Padiasek

13:31 10 Aug 18

My company has been with Ontech Systems, Inc. since their start. No matter the issue, big or small, their staff are quick to respond and get things resolved. Their team is extremely helpful when it comes to staying current in the ever-changing world of IT, and they are an instrumental part of our preparations for the future. Highly recommend!

Michael Steck

13:15 09 Aug 18

Ontech does many things right. From the initial assessment of the IT needs of my office they have worked to anticipate potential problems, offer different solutions, and make sound technical and financial recommendations that best suit my specific needs. Their willingness and ability to educate me on the different options or concerns that have popped-up is greatly appreciated! I know that I am not their only client, yet they always make me feel like the only person on the schedule. In 2017, they started an online portal to view and pay the invoices. It is a wonderful way to keep on top of my IT expenses. Mike, Mark, Jackie, Katelyn, Dan and the other members of the tech support team are wonderful!

Don Melnikoff

21:16 08 Aug 18

I have had Ontech as our IT partner for many years now and continued to be impressed with the quality of service they provide. Their secret sauce is their team members are both highly qualified IT professionals as well as having great people skills. They are a great partner that helps us understand and implement what we need from an IT perspective to grow. I have referred them to other business owners / operators and they too have had great things to say about Ontech.

Blue Chip

20:52 08 Aug 18

Ontech Systems meets the needs of our small professional service firm. We have used their IT services for several years now and feel that with today's scammers such as server, e-mail and internet intruders getting more clever with attacks each day that we are on solid ground. Our technician Dan is great to work with on simple and the most complex IT matters that we experience. We are always confident with Ontech as our go to IT firm.

Cindy Katzke

22:03 07 Aug 18

Our business has been using Ontech for a number of years and Dan is our main technical consultant that handles any questions or concerns we encounter on a daily basis. The service has been nothing short of great! Ontech goes out of there way to ensure that we are taken care of immediately and follows up to all of our questions, no matter how small, in a professional manner. Highly recommend!

Linda Vanden Heuvel

18:36 07 Aug 18

Great place! I completely trust this company. I highly recommend.

Bryan Meech

15:50 07 Aug 18

My full time employer came across OnTech from a cold call from Jackie. While talking to her, OnTech had better rates than the company we were currently using for outside tech support (I'm being nice and not naming the company). As it was, the outside tech support company we were using at the time we were becoming unimpressed with, so I talked with management into giving OnTech a chance.Once OnTech came in as our outside tech support, we've been nothing but impressed! Dealing with Keegan, John, and Dan (as well as a few others, but these 3 have been our main contacts) has always met or exceeded the expectations of ours. The team actually listens to what we have to say for what we are looking for and will come back with one or more solutions at all times.In the end, I highly recommend OnTech to anyone looking for a team to help give you resolutions with your technology needs as well as support!

Ryan Hetzel

14:37 07 Aug 18

Ontech has been a great partner. They've helped is with our onsite hardware, cloud storage, Office 365, and VOIP phone system. Everything they've done for us has been very well implemented and supported.

Trudy Gebhard

13:58 07 Aug 18

I have used Ontech System for my business and personal computer needs for years. I came to them in a situation where I had lost my current IT company and needed to immediately have them assess and recommend what I needed to protect and run my business. They were amazing! They are professional, prompt, budget conscious, and generally a great company and people to work with. I have recommended them to many of my professional and personal contacts. I cannot say enough about who they are and what they deliver.

Sean Luedke

04:15 17 Feb 17

For over 4 years, Ontech Systems has provided Public Allies with a consistently high level of support and customer service that has allowed us to have full confidence and trust in them. We've worked with other IT companies, but none of them come close to the service provided by Ontech.

Mary Sylvester

20:40 08 Feb 17

We’ve been outsourcing Ontech for a couple of years now. Their staff is knowledgeable, responsive, and proactive. We utilize them for onsite IT services, monthly managed services, and network projects. They do their homework on our various software systems to make sure our network always meets system requirements. Dan is our main man at Ontech. He has the ability to explain to me the IT side of things in normal, understandable words. IT issues can bring your business to a halt. Ontech keeps it going!

Sue Schoedel

20:33 07 Feb 17

Ontech has supported our IT needs for over 7 years. The service that is provided far exceeds our expectations. Our business relationship with Ontech is a great partnership that ensures all of our IT requirements are met.

dan flaschberger

18:43 03 Feb 17

Our infrastructure was aging and was in need of a refresh. We spoke to several potential vendors finding most of them trying to force us into a standard configuration. Instead, OnTech listened to our needs making several recommendations along the way. We were able to build a scope of work in which we were both confident. And then, they delivered the project. Of course, there were a few challenges along the way, mainly due to our lack of valid documentation, but the OnTech team was accountable to the end result. The project was concluded on time and on budget. We continue to use their on-going support today.

Mary Helbick

20:52 31 Jan 17

We hired OnTech a year ago, and are grateful we did! Prior to, we heard complaining from team members regarding various tech elements. No more! Our company invested in the equipment/programs they suggested for OUR company and OUR size of staff. They were spot on! No more complaints about slow computers, programs freezing up, or being tied to the phone. OnTech has given us freedom, flexibility and security in our day to day work life. In fact, I’m not sure how we functioned without them!Have a problem? Need something urgent fixed/looked into? ONTECH! Today is a GREAT example of their efforts. I called in with a problem that had a team member shut down. Shortly after, our IT Consultant, Dan Dineen, called to help me and SOLVED the issue. Dan is endlessly patient; his knowledge is amazing and he’s always going above and beyond. That’s OnTech as a whole! I’m impressed every time I need to call in for help.If you are looking for help with any of your IT needs, look no further! Call them TODAY!