Design and commissioning of new cloud data centers: ● Preparation of architecture, preparing LLD for installation, project implementation process management, technical debt management, support of the developed infrastructure. ● Networks is built on the Leaf-Spine architecture on Arista DCS equipment for the Underlay network and switch-based Overlay on the EVPN/VxLAN with OpenStack virtualization and CEPH for the storage network. ● This allowed the company to develop quickly and attract new clients by offering new capacities. Design and commissioning of new CDN, AntiDDoS locations: ● Preparation of architecture, preparing LLD for installation, project implementation process management, technical debt management, support of the developed infrastructure. ● This allowed the company to provide new services to customers. Design and commissioning of the DC Interconnect transport network: ● Preparation of the architecture, selecting a solution provider, preparing LLD for installatio, nproject implementation process management, technical debt management, support of the created infrastructure. ● The transport network is built on the PacketLight PL-4000 on DWDM network layer. ● This allowed the company to organize a geo-distributed network to improve scalability, reliability and disaster recovery. ● Gathering business requirements. ● Developed the solution infrastructure architecture. ● Prepared the HLD (Architecture and description of the solution) and LLD (L1/L2/L3 diagrams, Inclusion diagrams, equipment placement, cable magazine). ● Work with core team on list of potential activities and solutions. ● Support deployment of solution. ● Provide feedback to R&D. ● Participate in knowledge transfer, documentation and information sharing.

● New cloud data center design and commissioning. ● Starting from gathering information about services provided to existing and future customers and development of architecture for business requirements to implementation into production and subsequent support of the developed infrastructure. ● The network is built on the Leaf-Spine architecture on Juniper QFX and Mellanox SN equipment for the Underlay network, implemented on BGP Unnumbered for a dual stack (IPv4/IPv6) and Host-based Overlay on the Microsoft Network Controller (SDN), for the storage network, the SDS Microsoft Storage Space Direct (S2D) solution with RDMA support with RoCEv2 QoS was used. ● This allowed the company to enter new markets for the provision of cloud services and provide its customers with new services and gain new clients. ● Gathering business requirements for cloud services. ● Developed the solution infrastructure architecture. ● Prepared the HLD (Architecture and description of the solution) and LLD (L1/L2/L3 diagrams, Inclusion diagrams, equipment placement, cable magazine). ● Developed Method of Procedure and Acceptance Test Procedure. ● Solution testing and commissioning. ● Participate in knowledge transfer, documentation and information sharing.

Design and commissioning of a new supercomputer Christofari Neo: ● Preparation of architecture, project implementation process management, technical debt management, support of the developed infrastructure. ● The network for NVIDIA DGX A100 cluster is built on the Leaf-Spine architecture on Mellanox SN equipment for the Underlay network and Host-based Overlay on the VMware NSX-T (SDN), for the storage network, NFS was used. ● The supercomputer entered the Top500 (LINPACK benchmarks). ● This allowed the company to provide a new service in ML training to clients. Design and commissioning of new cloud data centers: ● Preparation of architecture, project implementation process management, technical debt management, support of the developed infrastructure. ● Networks is built on the Leaf-Spine architecture on Cisco Nexus equipment for the Underlay network and Host-based Overlay on the VMware NSX-T or OpenStack Neutron (SDN), for the storage network, the VMware vSAN or CEPH was used. ● This allowed the company to develop quickly and attract new clients by offering new capacities. ● Design and commissioning of new PaaS, SaaS, VDI, S3: ● Preparation of architecture, project implementation process management, technical debt management, support of the developed infrastructure. ● This allowed the company to provide new services to customers. Design and commissioning of the DC Interconnect network: ● Preparation of the architecture, project implementation process management, technical debt management, support of the created infrastructure. ● The network is built on the Leaf-Spine architecture on Arista DCS equipment for the L2/L3 network layer and Huawei OptiXtrans on L1 (DWDM) network layer. ● This allowed the company to organize a geo-distributed network to improve scalability, reliability and disaster recovery. ● Collaborating with customer to gather detailed data for the solution/business architecture and information models. ● Development of business process models and architecture. ● Development Design Documents (High-Level Design, Solution Design Documents). ● Technology Strategy development. ● Developing Method of Procedure and Acceptance Test Procedure. ● Work with core team on list of potential activities and solutions. ● Developing technical presentations and proposals. ● Support deployment of solution. ● Provide feedback to R&D. ● Participate in knowledge transfer, documentation and information sharing.

● Developed the concept of Software Defined Networking (SDN) architecture PJSC Rostelecom in the part of T-SDN for DWDM backbone network. ● Developed the technical development strategy of DWDM backbone network and DWDM regional network. ● Developed the unified technical policy for construction of DWDM regional network for all Macroregional Divisions in the structure of Rostelecom. ● Developed the testing program for DWDM regional network hardware. ● Run the test of the following hardware: Huawei OSN 9800, Alcatel-Lucent 1830 PSS, Transmode TM3000, Iritel OTP10G, T8 Volga. ● Research of prospective trends in telecom field. Analysis and study of possible application of prospective technologies and new approaches to construction of PJSC Rostelecom network infrastructure, considering total ownership costs of the proposed technologies and approaches. ● Interaction with hardware and software producers and vendors, participation in dedicated conferences and technological communities. ● Correspondence proving of applied technical solutions to backbone network and regional network according to the developed technical policies. ● Compliance control of tender competitive performance objectives to technical strategies / policies. ● Compliance control of tender draft proposals of vendors to the performance objective, technical policies and requirements. ● Expert analysis of the target development program of backbone network and regional network to be compatible with technical strategies / policies. ● Compliance testing of hardware to the technical requirements.

● Full cycle of Pre-sale activities for the Customer in Carriers and Enterprise networking solutions. ● Discovering new opportunities by helping customers to define their needs and achieve their Business goals by means of our products and services. ● Technical assistance in projects, RFx clarifying solutions, technical presentation to the customer (presentation), participation on negotiations with the customer (travel), participation in tenders, participation in sales planning (planning / execution). ● Technical projects implementation and installation as a network engineer. ● Technical consultations for the Customer. ● Development a wide range of technical documentation. ● Proof of concept and laboratory testing.

● Full cycle of Pre-sale activities for the Customer in Carriers and Enterprise networking solutions. ● Discovering new opportunities by helping customers define their needs and achieve their Business goals by means of our products and services. ● Technical assistance in projects, RFx clarifying solutions, technical presentation to the customer (presentation), participation on negotiations with the customer (travel), participation in tenders, participation in sales planning (planning / execution). ● Technical projects implementation and installation as a network engineer. ● Technical consultations for the Customer. ● Development a wide range of technical documentation. ● Proof of concept and laboratory testing.

● Full cycle of Pre-sale activities for the Customer in Carriers and Enterprise networking solutions. ● Discovering new opportunities by helping customers define their needs and achieve their Business goals by means of our products and services. ● Technical assistance in projects, RFx clarifying solutions, technical presentation to the customer (presentation), participation on negotiations with the customer (travel), participation in tenders, participation in sales planning (planning / execution). ● Technical projects implementation and installation as a network engineer. ● Technical consultations for the Customer. ● Development a wide range of technical documentation. ● Proof of concept and laboratory testing.