AeroLeads people directory · profile

Ryan Tetzlaff Email & Phone Number

Director IT and OT Cybersecurity at Open Systems International
Location: St Michael, Minnesota, United States 5 work roles 1 school
2 work emails found @osii.com 3 phones found area 763 LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

Contact Signals · 2 work emails · 3 phones

Work email r****@osii.com
Direct phone (763) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Open Systems International
Role
Director IT and OT Cybersecurity
Location
St Michael, Minnesota, United States
Company size
784 employees

Who is Ryan Tetzlaff? Overview

A concise factual answer block for searchers comparing this professional profile.

Quick answer

Ryan Tetzlaff is listed as Director IT and OT Cybersecurity at Open Systems International, a with 784 employees, based in St Michael, Minnesota, United States. AeroLeads shows a work email signal at osii.com, phone signal with area code 763, and a matched LinkedIn profile for Ryan Tetzlaff.

Ryan Tetzlaff previously worked as Director Of Information Technology at Open Systems International and Senior Manager of Information Technology at Open Systems International. Ryan Tetzlaff holds Bachelor Of Science (B.S.), Computer Science from University Of Minnesota-Twin Cities.

Company email context

Email format at Open Systems International

This section adds company-level context without repeating Ryan Tetzlaff's masked contact details.

{first_initial}{last}@osii.com
92% confidence

AeroLeads found 2 current-domain work email signals for Ryan Tetzlaff. Compare company email patterns before reaching out.

View email format View company profile Management contacts
Profile bio

About Ryan Tetzlaff

Ryan Tetzlaff is a Director IT and OT Cybersecurity at Open Systems International. He possess expertise in vmware, windows server, active directory, data center, integration and 14 more skills. Colleagues describe him as "I really enjoyed reporting to Ryan while I worked at OSI. He is a brilliant individual who is always up to date on the latest technologies. I always admired his excellent problem-solving abilities, and if I ever had a question, he always could provide a logical answer. He is personable, a strong leader, and a joy to work for – provided the right circumstances, I could work for Ryan again in a heartbeat."

Listed skills include Vmware, Windows Server, Active Directory, Data Center, and 15 others.

Current workplace

Ryan Tetzlaff's current company

Company context helps verify the profile and gives searchers a useful next step.

Open Systems International
Open Systems International
Director IT and OT Cybersecurity
minneapolis, minnesota, united states
Website
osii.com
Employees
784
AeroLeads page
Company profile
View company profile Email format
5 roles

Ryan Tetzlaff work experience

A career timeline built from the work history available for this profile.

Production Support

Webhelp
May 2001 - Jan 2002
Team & coworkers

Colleagues at Open Systems International

Other employees you can reach at osii.com. View company contacts for 784 employees →

NH Najib Hussien Najib Hussien Colleague at Open Systems InternationalGreater Minneapolis-St. Paul Area, United States View → OK Oscar Keating Oscar Keating Colleague at Open Systems InternationalSydney, New South Wales, Australia View → SD Sam Dobs Sam Dobs Colleague at Open Systems InternationalMinneapolis, Minnesota, United States View → KL Kyle Luu Kyle Luu Colleague at Open Systems InternationalGreater Chicago Area, United States View → GR Gerardo Ramirez Gerardo Ramirez Colleague at Open Systems InternationalColombia View → IA Ivan Arley Osorio Figueroa Ivan Arley Osorio Figueroa Colleague at Open Systems InternationalColombia View → AC Alexandria Cina-Bernard Alexandria Cina-Bernard Colleague at Open Systems InternationalGreater Minneapolis-St. Paul Area, United States View → CB Cody Boyd Cody Boyd Colleague at Open Systems InternationalGreater Duluth Area, United States View → JR Jacob Rausch Jacob Rausch Colleague at Open Systems InternationalGreater Minneapolis-St. Paul Area, United States View → KK Kory Krattiger Kory Krattiger Colleague at Open Systems InternationalMaple Grove, Minnesota, United States View →
1 education record

Ryan Tetzlaff education

FAQ

Frequently asked questions about Ryan Tetzlaff

Quick answers generated from the profile data available on this page.

What company does Ryan Tetzlaff work for?

Ryan Tetzlaff works for Open Systems International.

What is Ryan Tetzlaff's role at Open Systems International?

Ryan Tetzlaff is listed as Director IT and OT Cybersecurity at Open Systems International.

What is Ryan Tetzlaff's email address?

AeroLeads has found 2 work email signals at @osii.com for Ryan Tetzlaff at Open Systems International.

What is Ryan Tetzlaff's phone number?

AeroLeads has found 3 phone signal(s) with area code 763 for Ryan Tetzlaff at Open Systems International.

Where is Ryan Tetzlaff based?

Ryan Tetzlaff is based in St Michael, Minnesota, United States while working with Open Systems International.

What companies has Ryan Tetzlaff worked for?

Ryan Tetzlaff has worked for Open Systems International, Open Systems International, Inc., and Webhelp.

Who are Ryan Tetzlaff's colleagues at Open Systems International?

Ryan Tetzlaff's colleagues at Open Systems International include Najib Hussien, Oscar Keating, Sam Dobs, Kyle Luu, and Gerardo Ramirez.

How can I contact Ryan Tetzlaff?

You can use AeroLeads to view verified contact signals for Ryan Tetzlaff at Open Systems International, including work email, phone, and LinkedIn data when available.

What schools did Ryan Tetzlaff attend?

Ryan Tetzlaff holds Bachelor Of Science (B.S.), Computer Science from University Of Minnesota-Twin Cities.

What skills is Ryan Tetzlaff known for?

Ryan Tetzlaff is listed with skills including Vmware, Windows Server, Active Directory, Data Center, Integration, Microsoft Sql Server, Project Management, and Troubleshooting.

Find 750M verified contacts

Search by job title, company, industry, location, and seniority. Export verified B2B contact data when you need it.

People with similar names

Check these profiles if this is not the Ryan Tetzlaff you were looking for.

View similar profiles