Meet Our OpenStack Instructors

OpenStack experts with real-world experience.

Mirantis OpenStack instructors are true masters in their field, offering the unique combination of real-world technical experience with advanced communication and teaching skills. Having first cultivated their talents as devops, command-line ninjas, system administrators, engineers, and scientists, Mirantis instructors bring these talents to the classroom - working to ensure each student receives the technical experience they need to be become a true OpenStack guru.

Incredibly skilled in Linux, networking, virtualization and storage, Our instructors are in-house Mirantis engineers with real-world experience. OpenStack is not just their job, it's their passion. It's a passion they continue to share and cultivate by participating in any number of OpenStack projects, writing expert blog posts, and developing OpenStack training curriculum.

Reza Roodsari

Senior Technical Instructor

  • Double BA in Mathematics & Computer Science from UCSC and a MS in EECS from Santa Clara University 
  • Early career included work as a c/c++ developer on Unix and embedded real-time systems. 
  • Led teams in US, Taipei, and Shanghai, developing IPMI firmware for BMC for Dell, IBM and other ODMs.
"There is a lot I like about being a trainer - I've always enjoyed teaching. However, what stands out for me in leading Mirantis OpenStack trainings is the opportunity to meet engineers and architects working on some of the most exciting and challenging IT projects currently out there."

Learn a little more about Reza: Early in his career, Reza was a c/c++ developer, working on Unix and embedded real-time systems. He received his double BA in Mathematics and Computer Science at UCSC and his MS in EECS at Santa Clara University.

Reza has taught courses at Santa Clara University and he has worked as an adjunct faculty member. He also joined Versant Object Tech, working as a trainer and post-sales/service engineer, deploying applications on Versant ODBMS throughout north-America and Europe.

Reza participated in the internet revolution and web development in late 90s at a startup that didn't quite make it, followed by a decade leading various teams in the US, Taipei, and Shanghai developing IPMI firmware for multiple generations of BMC for Dell, IBM, and other ODMs. After stepping back into the internet and the cloud in 2012, he has been inspired by the breath and growth of open-source, as well as the transformation of software to glueware.

When not working with Openstack: Reza is married and lives with his wife and two teenage girls in sunny San Luis Obispo, California - home of CalPoly.


Devin Parrish

Technical Writer, Senior Technical Instructor

  • Began career as a Systems Engineer, automating, deploying, maintaining Linux & Unix systems 
  • OpenStack experience includes deployment, configuration, cloud operation & troubleshooting 
  • Has led trainings on a range of topics, including Linux administration and Java development
"Mirantis OpenStack training not only gives you the hands-on experience all administrators need, but it also gives you the knowledge needed to understand the internals of OpenStack."

Learn a little more about Devin: After completing studies in Computer Science, Devin began his professional career as a Systems Engineer automating, deploying, and maintaining Linux and Unix systems. He then began training professionals in topics ranging from Linux System Administration to Java software development.

Devin’s extensive OpenStack experience includes includes deployment and configuration, cloud operation, and troubleshooting.

When not working with Openstack: Devin enjoys traveling, bicycling, and anything hockey related.


Polina Petruik

Senior Technical Instructor, Curriculum Developer

  • Led a large QA team, responsible for testing life-critical medical software at Global Logic Inc. 
  • Began her career in software as a QA engineer for credit scoring and decision management solutions 
  • Before becoming an OpenStack instructor, Polina was a Mirantis QA and Program Manager
"It doesn't matter which field I want to try myself in, Mirantis always gives me an opportunity to do so. As a trainer I can go to different places and meet a lot of interesting people, get to know the cultures and how different companies do things and what fascinating problems they are trying to solve."

Learn a little more about Polina: Polina Petriuk is a Senior Technical Trainer at Mirantis. Responsible for developing and teaching OpenStack classes, she has led a number of training classes to leading technology and enterprise companies.

Prior to this role, Polina was a QA and Program Manager at Mirantis. Her responsibilities included running a geographically distributed engineering team; developing, administrating and providing technical support of a private cloud for one of the leading DRaaS providers; and creating and implementing CI/CD infrastructure for that product.

Polina began her career in software as a QA engineer for credit scoring and decision management solutions, transitioning into QA Lead, Deployment and Release Manager at Scorto Solutions. Polina has also led a large QA team for testing of life-critical medical device software at Global Logic Inc.

When not working with Openstack: She currently resides in San Jose, CA. When not engaged with Mirantis Training, Polina enjoys her patio garden and multiple knitting projects.


Damian Igbe, PhD

Senior Technical Instructor

  • Received a PhD in Computer Science from the University of Westminster, UK. 
  • Has eight-plus years of commercial experience building computer clusters and cloud infrastructures 
  • Experience includes deploying up to 500 Servers & PCs and virtual computers with IT automation tools
“I am glad to be among those doing what they love most and most importantly doing that with Mirantis, the leaders in Openstack Training.”

Learn a little more about Damian: Damian received his PhD in Computer Science from the University of Westminster, UK. Computer networking is one of his passions and interests, and he is always working to hone and cultivate this expertise. Damian has more than 8 years commercial experience building computer clusters and cloud infrastructure, and deploying up to 500 Servers & PCs and virtual computers with IT automation tools.

After spending several years as a techie combined with a research degree, Damian always felt that his next career move would be in an environment where he could better utilize his core technical and communication skills. Technical training affords him the opportunity to connect with his technical colleagues in the classroom and share ideas.

Damian shares his technical experience and knowledge and at the same time learns from his colleagues too - this is why he is always looking forward to his next training.

When not working with Openstack: Outside the classroom, Damian is probably jogging or hacking Openstack or playing with his kids.


Grzegorz Pawelski

Senior Technical Instructor

  • Engineer's degree in software and computer architecture from Warsaw University of Technology
  • 15+ years of experience as a systems engineer at IBM, AT&T and Nokia
  • Trainings developer and instructor in Nokia Centre of Excellence
“It is a great pleasure to be a part of Mirantis and the OpenStack community.
I believe that knowledge sharing becomes a natural progression when you love to discover and learn how things work.”

Grzegorz started his career as a young computer enthusiast. After handing over his beloved Amiga 500 to his younger brother, he switched to a PC, which very soon became controlled by Linux. Years later, he attended Warsaw University of Technology where he graduated with an engineer's degree in software and computer architecture.

Before joining Mirantis, his spent over 15 years at IBM, AT&T and Nokia, where he worked as a systems engineer in the areas of IP networking, IT security, mobile networking, virtualization and telco cloud. As a contributor of Nokia Centre of Excellence, Grzegorz developed and led trainings and workshops on the above topics.

When not working with Openstack: Grzegorz enjoys spending his spare time with his wife and kids. He enjoys playing and watching football, cycling, and reading scientific books and articles.


Stephen Nemeth

Technical Instructor

  • Directed design and architecture for Cisco Advanced Services on some of Cisco's largest projects
  • Worked as a trainer at State Farm Insurance after directing the collaboration security design
  • Formerly a Linux Systems Administrator focusing on reliability engineering, exploitation, and system monitoring
“Mirantis has pioneered OpenStack to be an enterprise ready offering.
This includes preparing administrators and support staff for the challenges of running OpenStack in production, providing a comprehensive enterprise solution.”

At the early age of two, Stephen had an Amiga Commodore and immediately fell in love with computers. He has been working with computers ever since and considers himself to be a lifelong computer enthusiast. Before joining the Mirantis Training team, he spent five years working extensively with Cisco on various projects, including working for Cisco Systems Advanced Services. Prior to Cisco, he worked on LAMP stacks and had a strong interest in pentesting and security design.

He is a member of the Electronic Frontier Foundation and an avid supporter of open source software. He is also an innovator, keeping apace of rapid changes in technology and engineering.

When not working with OpenStack: He currently resides in Silicon Valley. He has two dogs and a cat and enjoys reading, camping, theater and music. He is also interested in 3D printing, chemistry and material science, and drones for home use.



  • Mirantis Training is the perfect place to get into the reality of OpenStack. The most beneficial parts for me were the general overview of OpenStack and the deep-dive into Nova networking. The hands-on workshop was also very helpful for learning to deploy OpenStack. I would highly recommend it to anyone looking for a clear, unbiased overview of OpenStack.

    Aravinthan Gopalasingham Research Engineer, Alcatel-Lucent

  • Having gone through rigorous certifications, I find the MCA-100 exam to be of the highest quality. The test reflects accurately the content covered during the 3-day bootcamp. Most importantly in my opinion, is that the technological independence that Mirantis professes is accurately reflected in the exam. Highly recommended.

    Ramiro Salas Global Technology Specialist, OpenStack

  • Just spent the last three days training with [Mirantis instructor] Polina Petriuk. Her class was--by far--the best training class I've taken in a long, long, time.

    Joshua Feldman Director, Data Center

  • I would highly recommend Mirantis OpenStack training. The technical depth was excellent. Processes of authorization with tokens, databases, RabbitMQ and others were explained very well. Troubleshooting was explained very thoroughly and well structured. Every participant had a dedicated OpenStack cluster for practical work. The real life implementation with HA and other considerations was discussed.

    Alexander Low Deutsche Borse Cloud Exchange AG, Germany

  • The most useful part of participating in OpenStack BootCamp was its combination of theory and practice, networking module and dedicated attention by instructor. With Mirantis extensive experience and guidance I learned about OpenStack functionality and use of Devstack for development which was exactly what I needed.

    Miguel Lavalle OpenStack Developer

  • Great program that guides you through OpenStack architecture and highlights its capabilities and limitations.

    Russ McElroy Manager – Storage Engineering

  • Technical overview, quantum networking and flow work for virtual machine creation made this class helpful for beginners as well as more advanced users.

    Ahmed Al-Mehdi Sr. Software Engineer

  • The boot camp proved to be a great hands-on conceptual overview supported by knowledgeable instructors and presented at a comfortable pace.

    Berry Weber CTO

  • This was a great experience even for someone just starting to learn OpenStack. The instructors were able to break down a complex concept into understandable steps and engaging examples.

    Joseph Williamson OpenStack Cloud Network Engineer – Sr Adviser

  • The class did a great job at explaining Quantum and Folsom changes, deployment and use cases. Lectures were perfectly mapped to labs

    Jeffrey Rametta Solutions Engineer

  • If you need a 2-day intensive introduction into the operation of OpenStack, this course is for you. In this program you will learn the limitations and capabilities of the various pieces that make up the system with focus on using both GUI and CLL. The variety of hands-on exercises as well as pointing out strengths and weaknesses of the system proved extremely useful.

    David Kensiski Director of Technical Infrastructure

  • I attended Mirantis’ OpenStack training program seeking a better understanding of the OpenStack software architecture and operations practices. The program far surpassed my expectations and I consider it an excellent introduction to OpenStack. It's a quick jumpstart to the entire product.

    Bernard Golden VP, enStratus

  • For me, the most useful part of attending this Boot Camp was seeing and interacting with the software. Putting hands on the system, talking to someone who had used it in production, and getting a better deep-dive than the manual/documentation at the process level were key benefits. I'd encourage people to take the class to get up to speed quickly.

    Pat Holben CTO

  • The most useful part of this Boot Camp was getting a good understanding of the architecture, and meeting participants from other companies working on OpenStack. It helped me understand the status of the OpenStack Project in terms of how it can help our mutual customers today, and in the future.

    Don Vosburg Technology specialist