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AVANT's World Class Engineers

Niko O'Hara

Niko O'Hara

Head of Programs, Engineering & Vendors

As the first engineer at AVANT in 2013, Niko was truly born in the cloud. He uses his technical background in Electrical Engineering to dissect complex technologies like SD-WAN/SASE, Backup/DR, and Security.
When I'm not working with the best engineers on the planet, you can find me at home with my wife and two French Bulldogs, watching Marvel movies, playing PS5, hosting game nights, or shooting hoops.
Andy Bird

Andy Bird

Head of CX | UCaaS, CCaaS

Andy has over 26 years of industry experience, and has had the privilege of leading teams and organizations in the development of several Contact Center as a Service (CCaaS) Platforms, including one of the first Generative AI Interaction Platforms. Throughout his career, he has held numerous product leadership roles that have shaped his expertise and vision.
The landscape of our industry has evolved significantly, and Avant’s comprehensive understanding of the market sets it apart. The ability to harness top-tier solutions to address challenges and deliver results is a unique strength of Avant. It is this very aspect that has drawn me to be a part of the AVANT team.
Chip Hoisington

Chip Hoisington

Head of Connectivity & Colo

Chip brings more than 25 years of technology, engineering, and sales experience to the AVANT team. While he specializes in connectivity, global wide area networks, colo, TEM, and Mobility, Chip also holds certifications in Security, Data Science, and IT Support.
My colleagues would describe me as a story teller who uses analogies to simplify complex subjects. People say that I love to teach. When not working toward global domination, you can find me near the water fishing and teaching other people to fish.
Stephen Semmelroth

Stephen Semmelroth

Head of Security

Stephen is a vCISO, CISSP, and Army Ranger who led cyber teams and infantry platoons in Afghanistan. After retiring from the Army, he founded and sold a cyber recruiting company.
Coming to AVANT allows me to roll up my sleeves and truly build the industry. This is an opportunity to grow the security program and allow TAs to be there when customers need them, and to build a plan that turns fear into rational planning and execution.
Brent Wilford

Brent Wilford

Senior Director | UCaaS, CCaaS

Brent has 21 years of SE experience across UCaaS, CCaaS, Cellular Networks, Distributed Antenna Systems, Enterprise Sales Process, and Proof of Concept Design. He’s held previous roles as a Senior Sales Engineer at Fuze and T-Mobile, and Sales Engineer with Nextel and Sprint.
I knew I wanted to be an SE while working in a technical sales role at Nextel. Our Sales Engineer impressed me with the questions he could answer with ease, and the trust he built immediately with the customer. I asked him to mentor me, and 20 years later here I am!
Dave Watson

Dave Watson

Field Sales Engineer | UCaaS, CCaaS

Dave has 25 years of experience in the industry, selling, installing, and maintaining UC Platforms and Contact Centers. Prior to joining the team, Dave was also a Trusted Advisor. This depth of experience gives him the ability to see deals from several perspectives.
When not assisting Trusted Advisors with opportunities, or sharpening my craft with peers and providers, you can find me competing in pickleball or racquetball, or somewhere in the Caribbean 60 feet below water.
John Paullin

John Paullin

FSE / Director | UCaaS, CCaaS

John has 14 years of industry experience in UCaaS, CCaaS, SD-WAN and Conferencing/Collaboration. He’s held previous roles as a Solutions Engineer at Stratosphere Networks, as well as a Sales Engineer and Web Collaboration Specialist with InterCall.
The best part of being an SE at AVANT is that I learn something new EVERY SINGLE DAY. Whether it’s a new vendor’s offering, an update from one of our long-time partners, or a challenge by a Trusted Advisor’s customer, there is never a dull moment in this role.
Peter Callowhill

Peter Callowhill

FSE / Director | WAN, Colo

Peter has more than 25 years experience with specialties in Connectivity, Colo, Mobility, and Telecom Expense Management. Before AVANT, Peter founded a CLEC (carrier) and TEM provider.
As an AVANT engineer, I get to be an integral part of an amazing team of highly knowledgeable professionals, dedicated to helping clients make best decisions, and supporting TAs to win a lot of business.
Rick Mischka

Rick Mischka

Field Sales Engineer | Security

Rick is an 8+ year Cybersecurity SME with a diverse set of life experiences, including being a former Special Forces Green Beret, a professional volleyball player, a National Championship-winning coach, and a Firefighter—Paramedic.
It is my passion to promote cyber education through servant leadership and carve a trail where there was no path before. Avant's mission aligns and promotes this vision for all of their Trusted Advisors, and this is super awesome!
Tom Croft

Tom Croft

FSE / Director | UCaaS, CCaaS, WAN

Tom’s journey to AVANT has been full of diverse experiences, from decoding complex customer problems to sculpting seamless user experiences. While his focus areas are UCaaS and CCaaS, he is also well-versed in Connectivity, SD-WAN/SASE, and Security.
I am beyond excited to take the foundations of what is already built at AVANT and really drive the international business, starting with Europe and then beyond!
Dane Menke

Dane Menke

Senior Sales Engineer | Cloud, Security

Dane brings 13 years of industry experience to AVANT with an emphasis on Cloud, IaaS, Security, and Backup/DR. His previous roles include Solutions Architect at Singlehop and INAP, and Systems Engineer with Hipskind and in the military.
As a former sysadmin, troubleshooting is in my nature. There’s nothing I enjoy more than digging in with a customer on a complex IT initiative to craft a solution unique to their needs.
Eric Cooke

Eric Cooke

Senior Sales Engineer | WAN, Colo

Eric has 25 years of experience in the industry and 15 years supporting the channel. He has held various roles in technical sales, provisioning, and project management, specializing in Connectivity, Colo, SD-WAN, Voice, and UCaaS.
Being an Avant SE gives me and our Trusted Advisors the opportunity to explore such a deep array of offerings. Having the team, tools, and providers to find the right fit for your customers is the best part of the job.
Amanda Bean

Amanda Bean

Sales Engineer | UCaaS, CCaaS

With over 15 years in the industry, Amanda’s held leadership roles in Contact Center, Engineering, and IT. Experience in retail (250 agents) and healthcare (9000!) help her understand the entire CCaaS process: deploying media channels, programming, support, development, and process automation.
My entire career has prepared me to be an SE at AVANT. I feel blessed to work with such incredible, intelligent, passionate people. I’m inspired every day to learn, grow, and make a difference, empowering businesses to meet the demands of the modern workplace.
David Bjerke

David Bjerke

Sales Engineer | Cloud

David has been in the industry since 2013 and specializes in Cloud, IaaS, DaaS, and Backup & DR. He’s held previous positions at AVANT in Operations, Commissions, and IT.
When I'm not helping Trusted Advisors or honing my cloud expertise, you can find me agonizing about another disappointing season for a Wisconsin-based college/professional sports team, and subsequently trying to find the appropriate Spotify playlist to help me cope.
Sarah Arnstein

Sarah Arnstein

Sales Engineer | UCaaS, CCaaS, WAN

Sarah has been in the industry since 2018 and specializes in UCaas, CCaaS and SD-WAN. She has held the previous roles of Patent Engineer at Hanley, Flight and Zimmerman and Mechanical Engineer with the Ford Motor Company.
The best thing about being on the SE team at AVANT is the caliber of people I get to work with. These are some of the most intelligent, clever, and helpful people I know.