Proving their skills on a daily basis at NIL Ltd.’s clients, our security experts (each of them is an instructor and active engineer) bring real life security challenges and topics into the classroom.

They do their best to equip students with up-to-date knowledge and skills that will help them keep the infrastructure that they are responsible for, stable and resistant to present day security threats and hacking attempts.

Krzysztof Zygis

Krzysztof Zygis

Krzysztof has been in Cisco training and consulting for almost two decades. With rich field experience and a proven track record, he is a respected expert in routing and switching, network security, and data center technologies, which he regularly teaches to students around the EMEAR region. He is also highly involved in content development and has contributed to a list of authorized Cisco courses.

Krzysztof is a graduate of electrical engineering and can fluently speak three languages—Polish, German, and English. In his free time he enjoys sports and has an ear for good music, both as a listener and a piano player.

Certifications:

  • Certified Cisco System Instructor #20962

  • Cisco Certified Internetwork Expert – R & S #6376
Ratko Perlić

Ratko Perlić

Ratko has been in the networking industry for more than 15 years, focusing for the last few years on network security, Cisco Data Center product portfolio and Network Service Virtualization (NSO) technologies. Working on a number of projects for both large enterprises and service providers, Ratko has gained a broad overview of various network technologies and earned a number of different certifications. In addition to his everyday work in designing and implementing networks, he spends a significant amount of time working as a Cisco Certified Systems Instructor (CCSI), delivering advanced-level training to students around the world. Ratko won Quality Instructor Award at Cisco Global Learning Partner Conference 2014.

Certifications:

  • Certified Cisco Systems Instructor #32208
  • Cisco Certified Network Professional Data Center
  • Cisco Data Center Unified Computing Design Specialist
  • Cisco Data Center Unified Fabric Design Specialist
  • Cisco Unified Computing Technology Design Specialist
  • VMware Certified Professional 5 - Data Center Virtualization
Samo Jerman

Samo Jerman

Samo, CCIE Security #20241, is NIL’s security team lead. Specializing in the area of network and IT security and having more than 10 years of experience in this field makes him one of the leading experts in enterprise network security in the region. During his career, Samo has been designing, implementing, and supporting network and security systems for enterprises, financial organizations, public and governmental institutions, and service providers worldwide. He has been working with Cisco, Palo Alto and IBM solutions, and has broad knowledge of information standard compliance and IT systems auditing. Based on his rich field experience with security risks, IT architectures as well as regulatory frameworks, he can provide customers with optimal network security designs that deliver the highest protection without negative impact on business processes.           

Samo also often takes part in pre-sales activities and delivers specialized Cisco security courses.

Certifications:

  • Certified Cisco Systems Instructor (CCSI) #33256
  • Certified Information Systems Auditor (CISA)
  • Cisco Certified Internetwork Expert (CCIE) - Security #20241
  • IBM Certified Associate - Security QRadar  
  • Microsoft Certified IT Professional
  • Palo Alto Accredited Configuration Engineer (ACE)
  • Palo Alto Certified Network Security Engineer (CNSE)
  • VMware Certified Professional - Data Center Virtualization (VCP-DCV)
Srečko Milanič

Srečko Milanič

Srečko Milanič has devoted his professional skills to the design and implementation of a wide range of network solutions as well as customer support. He has been involved in several networking projects in Slovenia and abroad. With more than 12 years of experience in information technology, he specializes in network security. A Cisco Certified Systems Instructor (CCSI), he enjoys spending time in the classroom, sharing his knowledge with other IT professionals. Occasionally, Milanič also takes part in course development. He currently holds Cisco Certified Network Professional (CCNP), Cisco Certified Security Professional (CCSP), Cisco Certified Systems Instructor (CCSI) and RSA Certified Security Professional certifications.

Certifications:

  • Certified Cisco Systems Instructor #32760
  • 
Cisco Certified Network Professional Routing and Switching
  • Cisco Certified Network Professional Security
  • F5 Accredited Technical Sales Professional
  • F5 Certified BIG-IP Administrator
  • Palo Alto Accredited Configuration Engineer (v 5.0)
  • RSA SecurID Certified Systems Engineer 7.1x
  • RSA SE Professional in Authentication
Stojan Rančić

Stojan Rančić

Stojan, CCIE No. 17461, is a security expert, specializing in the area of networks and information systems since 2005. In addition, he has a strong background in open source systems, services and solutions, as well as virtualization technologies. He shows his skills as an instructor and lecturer for specialized Cisco Systems courses at home and around the world, where he teaches Cisco engineers as well as end users.

Certifications:

  • Certified Cisco Systems Instructor #31098
  • Certified MIMEsweeper Engineer
  • Cisco Certified Internetwork Expert – Security #17461

  • Palo Alto Accredited Configuration Engineer
  • Sourcefire Certified Expert
  • VMware Certified Professional #1012
Tilen Mlakar

Tilen Mlakar

Tilen Mlakar, CCIE No. 35693, is a network engineer who took part in numerous network design, implementation and verification projects in Slovenia and abroad. His expertise is routing and switching, network security and service provider networks. He is highly involved in development of Cisco courses for various tracks, and in delivering Cisco courses to customers at home and abroad as a Cisco Certified Systems Instructor (CCSI). His other certifications are Cisco IronPort Certified Security Professional (ICSP) – Email Security and Microsoft Certified IT Professional (MCITP).

Certifications:

  • Certified Cisco Systems Instructor #32108
  • 
Cisco ASA Specialist

  • Cisco Certified Internetwork Expert – Security #35693

  • Cisco Firewall Security Specialist
  • 
Cisco IOS Security Specialist

  • Cisco IPS Specialist

  • Cisco VPN Security Specialist
  • 
IronPort Certified Security Professional - Email Security
  • Microsoft Certified IT Professional #8036248
Trevor Angus

Trevor Angus

With more than 25 years of field experience in IT and after working in different positions ranging from support engineer, network engineer, and principal solution engineer to solution architect and consultant, Trevor Angus is a respected Cisco instructor. He specializes in security, data center, and routing and switching technologies. Students often emphasize his ability to enhance standard curriculum with practical examples. With his enthusiasm for passing on knowledge, Trevor is happy to grab every opportunity to mentor junior engineers and help them on their career path.

Certifications:

  • Certified Cisco System Instructor #34081
  • Cisco Certified Internetwork Expert – Security #19552
  • Cisco Certified Network Professional Routing and Switching
  • Cisco Data Center Unified Fabric Design Specialist
  • Cisco Data Center Unified Fabric Support Specialist
  • Juniper Networks Certified Specialist Security
Zlatko Marić

Zlatko Marić

When Zlatko joined NIL in 2016 he already had more than 10 years of experience in IT and a proven track record in deploying networking solutions for some of the largest organizations in Slovenia. He worked with routing, switching, wireless, and security technologies, and he was also often engaged in pre-sales activities.

At NIL, he is a member of the security team, and he primarily focuses on network security (firewalls) and mobile devices security (MDM). His main tasks are centered around consulting, and design and implementation projects. Zlatko is also a certified Cisco instructor, and he holds a degree in electrical engineering and a master’s in organizational sciences.

Certifications

  • Certified Cisco Systems Instructor (CCSI) #35462
  • Cisco Certified Design Professional (CCDP)
  • Cisco Certified Network Professional (CCNP) Routing and Switching
  • MobileIron Design and Deployment Specialist

 

Customized course and job-ready skills

Customized course and job-ready skills

For a few upcoming projects, we needed advanced Cisco ASA Firewall knowledge. We really wanted to learn the deepest firewall technologies and get familiar with the best practices from the real world. We also wanted to learn from instructors with real-life experiences, to provide us with the knowledge for successful future projects. After doing some research, we decided to take our training from NIL.

The course was professionally customized according to our request. During the course, we once more were assured that NIL was the best possible choice. The instructor, Ratko Perlić, was very experienced, and he was always eager to answer all our questions and help us to find the best solutions for all our problems.

We really learned a lot from this course, gaining practical real-world skills for successful work on our future implementation projects.

Tural A. Lachinov, Network Engineer
R.I.S.K. Company