SUMMARY
Certified and industrial Network Administrator with 15 years of experience managing the IT environment of a large energy company using servers and complex cloud technologies, increases company productivity by implementing 6+ enterprise services for hundreds of users. Skilled in project management, firewalls, hardware, and extensive experience across the entire IT project life cycle, implemented over 6 initiatives, resulting in a 16x improvements in network performance.
PROFESSIONAL EXPERIENCE
System Administrator 10/2013-present
GEH TER LLC (branch) - Maintenance of large power plants | Novomichurinsk, Russia
Developed projects for the evolution of networks of 7 remote offices of the company by implementing new hybrid technologies Wi-Fi, VPN, WAN, LAN to increase network speed by 16 times and reduce the number of service denials.
Established Network Attached Storage (NAS) using software customization and project management skills to achieve industrial reliability storage and integration with existing business applications of 9 TB of enterprise data by implementing 3 additional Geo-distributed file servers.
Applied an innovative EDMS for 70 users, optimizing document workflows and reducing routine task completion time by 75%; this increased team productivity and was recognized by senior management for proactive initiative.
Performed in-depth analysis to align existing infrastructure with PURDUE security models, resulting in a 83% reduction in potential security vulnerabilities.
Designed, coordinated and managed the implementation of a CCTV (video surveillance) project using a private VPN connection to the Corporate Security department to install additional camera nodes.
System Administrator Dec 2008 - Oct 2013
TER-Novomicurinsk - Maintenance of large power plants | Novomichurinsk, Russia
Designed, managed and supported complex IT/OT environments including routing, switching, DNS, voice, wireless, security and load balancing platforms and technologies to ensure industrial performance and security.
EDUCATION
Ryazan College of Electronics | Ryazan, Russia 2002-2006
Degree: College Diploma (three years) GPA: 3.76 / 4.00
Major: Computer Systems and Networks Maintenance Technology (diploma with distinction)
Language Skills: • English – Fluent, • Czech – Intermediate • Russian – Native
TECHNOLOGICAL SKILLS
• Linux Windows Servers • Active Directory • Information Security • Exchange Server • Networking • Technical Support • Virtualization • Hardware • Cloud services • Firewalls
SOFT SKILLS
• Project management • Problem-solving • Communication • Risk management • Teamwork • Determination • Mentoring
PROFESSIONAL DEVELOPMENT
Network Defense, course from Cisco Jul 2024
Implement network monitoring and security techniques, including access control, firewalls, cloud security and cryptography. Evaluation and responding to security alerts.
Implemented robust security measures to protect networks against various cyber threats, reducing security incidents by 13% and minimizing downtime in the event of an exploit.
Endpoint Security, course from Cisco Jul 2024
Application of concepts of network security, as well as operating systems and endpoint security.
Utilized advanced security analysis techniques to assess and improve the company’s endpoint security measures, resulting in a 17% reduction in security vulnerabilities.
Networking Basics, course from Cisco Jul 2024
The foundation of networking applications and protocols, configuration, connection network devices, media, and protocols.
Configured VLANs, switches, routers, and firewalls to enhance network security and optimize data flow, resulting in reduced network downtime by 16%.
CERTIFICATIONS
International Academic Qualifications, Certificate WES #6038574IMM Oct 2023
Issued by World Education Services (WES) - Toronto, Canada
International English Language Testing System (IELTS), Certificate #23TR506632KOZS002G Feb 2024
Issued by British Council - Istanbul, Turkey
Fire safety measures for managers, Aug 2022
Issued by Personnel training center in the energy sector - Moscow, Russia
VOLUNTEER WORK
Over the past 3 years, trained 7 student programmers for various industries as a mentor. All students successfully completed their studies and received diplomas.
EMPLOYEE REVIEW
I am attaching a link to an employee review from my employer, but please note that my colleagues do not speak English: employee review
CONTACT
Given the time difference, please let me know the time of your call
- email: hello@sergeykozlov.ru
- Skype: sergeykozlov.ru
- https://www.linkedin.com/in/sergeykozlovru
- https://www.credly.com/users/sergei-kozlov
- https://learn.microsoft.com/users/sergeykozlov
- https://stackoverflow.com/users/1895392/sergey-kozlov
- https://github.com/SergeyKozlov
- https://gitlab.com/SergeyKozlov