Mikhail Sementsov
Linux System Administrator at Quantum Brains- Claim this Profile
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Bio
Experience
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Quantum Brains
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Germany
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Research Services
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1 - 100 Employee
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Linux System Administrator
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May 2022 - Present
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Information Technology Support Technician
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Feb 2020 - May 2022
Administration: terminal server based on Windows Server 2012, Hyper-V, Veeam, network from data center to office, VPN via L2TP-IPsec / SSTP / SSH Port-forwarding on Mikrotik, box. Bitrix24, Active Directory up to 50 users Setting up Zabbix monitoring on key services with notification of critical events in Telegram, support for its operation PBX administration based on FreePBX, support for integration with Bitrix24, periodic troubleshooting Diagnostics and repair of Eltex equipment at the request of customers, as well as maintenance of existing equipment, visits at the request of customers for installation and commissioning Selection of equipment for the requirements of technical specifications for public procurement, in particular Eltex, Cisco, HP, Extreme, Juniper Technical support for employees remotely and on-site Show less
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System Administrator
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Nov 2019 - Feb 2020
Deployment and configuration of SMTP servers in the cloud for mailing (as well as its conduction) - DigitalOcean + CentOS 7 + CentOS Web panel + DNS settings Collection/parsing of data from CRM and other sources with own scripts and third-party software. Modernization of the amoCRM interface to the requirements of the company, writing applications on webhooks. Workplace support, assistance to company employees in working with software. Drawing up requirements and purchasing new equipment, as well as its modernization and maintenance. Writing instructions for working with CRM, mail relays, full relay configuration on CentOS and launching mailing lists on the collected database. Show less
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Back End Web Developer
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Dec 2018 - Jul 2019
Performing site modification tasks and writing applications for server and cloud versions of Bitrix24 (in PHP using the old and new API, as well as REST-API for the cloud). Configuration and support of client servers for stable operation (CentOS, Debian). Setting up cloud and self-hosted telephony both for clients and within the company (Asterisk, Uiscom, Bitrix 24 telephony). Writing instructions for other employees on working with servers, as well as documenting the written code. Show less
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Russian Military
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United Kingdom
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Armed Forces
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1 - 100 Employee
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Information Technology Technician
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Nov 2017 - Nov 2018
1 year of experience in LAN configuration and support on Astra Linux with DNS, mail services, domain user space (Astra Linux Directory - setup of user access levels, Bind9 - setup of master and slave DNS servers, Postfix - mail exchange server setup , configuring iptables, firewall). Together with administration experience - a year of work with an electronic document management system, technical writing, etc. in MS Word, Excel and Visio. 1 year of experience in LAN configuration and support on Astra Linux with DNS, mail services, domain user space (Astra Linux Directory - setup of user access levels, Bind9 - setup of master and slave DNS servers, Postfix - mail exchange server setup , configuring iptables, firewall). Together with administration experience - a year of work with an electronic document management system, technical writing, etc. in MS Word, Excel and Visio.
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