Sergey Tsaparin
Портфолио
LCC RKS-energo
• Led a team of 15 professionals in it infrastructure to ensuring fault tolerance of company services. • Implemented corporate local services, such as: NextCloud (instead of Google disk, Dropbox, etc), RocketChat (instead of public chat services). • Successfully transferred 600 people to a full remote work in the spring of 2020 while maintaining office IP telephony (using VYOS/OpenVPN) and the full functionality of employees. • Organized a unified IP-telephony on the territory of 40 offices after they were combined via VPN: ipsec + gre + ospf. • Search, selection, training of employees with minimal staff turnover.
LCC RKS-energo
• Transferred all processes to a fault-tolerant virtual environment (Hyper-V Cluster, SQL enterprise cluster). Enterprise-level equipment based on servers and storages Fujitsu. • Developed and monitored a $6M annual Information Technology (IT) budget for each year. • As head of the restructuring team, each year performed a sensitivity analysis to renegotiate all contracts with IT vendors, resulting in savings of 5-15% per year. • As the product owner of a SaaS corporate scraping service changed the architecture of the solution for working with containers, which reduced the service launch time for test connections and 3 times and increased the number of subscriptions by 1.7 times. • Tracked spending against budget and projects progress to ensure effectiveness of financial controls and accuracy. • Led a project to implement a unified ERP platform for the entire information system to facilitate monthly reporting, which reduced the time of movement of documents and reports by more than 40%.
LCC Optimal service
• Preparation and control of the expenditure of the enterprise budget. • Solving non-standard tasks with the help of IT tools. • Search, selection, training of employees. • Administration of a large network and fleet of units (1000+). • Unification of procedures, work, algorithms. Cost optimization. Writing scripts powershell, bash. • Search, selection, training of employees. • Searching, negotiating with new clients, concluding contracts, resolving conflict situations. • Cost optimization, negotiating with providers and suppliers in order to achieve the most favorable terms of cooperation. • Development of regulatory documentation (instructions, rules of use, information security policy of the company, etc.). Full management of the client, the solution of all issues in the field of IT. IT consulting. • Installation and administration Windows and Unix infrastructure. • Configuring services and protocols AD, GPO, DNS, DHCP, VPN, FTP, RDP, web servers, file servers, print servers. Using virtualization to host client servers (Hyper-V, Xen, VMware, Proxmox). • Network protection, Firewall, DMZ. • Data backup (Acronis, Veeam, MS DPM, etc.). • Deployment of RAID arrays and network storages. • Installation, configuration, administration of mail environments: MS Exchange, Exim, spam limitation. • Maintenance of network equipment Cisco, Huawei, MikroTik.