Sergey Klochkov

Senior Network Engineer | Cloud & Data Center Networking | Enterprise Infrastructure | Delivery & Operations

New York City Metropolitan Area

About

Senior Network Engineer with experience in enterprise, financial, data center, and cloud environments. Designs, deploys, and operates network infrastructure and drives multi-vendor technical delivery across complex environments. U.S. Green Card holder, currently based in the UAE and relocating to the U.S. in late July, with availability to start in late August.

Experience

  • Senior Network Engineer at Core42
    Jul 2022 - Present · 4 yrs 1 mo

    • Design and deploy a multi-tenant BGP EVPN/VXLAN data center fabric supporting cloud services and workload isolation across compute, storage, and edge domains. • Design and implement a VPC-like networking abstraction on OpenStack, enabling tenant isolation and controlled access to cloud and external networks. • Develop VPC networking services, including VPC Peering, Custom Route Tables, Public NAT Gateway, Virtual IP, and Direct Connect. • Provide technical guidance to software engineering teams on implementation, testing, and validation of VPC networking services. • Design network infrastructure for AI/HPC compute clusters, including high-bandwidth fabrics and traffic isolation for large-scale GPU workloads. Technology stack: BGP EVPN, VXLAN, OpenStack, OpenShift, REST API, Python

  • Senior Network Engineer at PepsiCo
    Apr 2020 - Jun 2022 · 2 yrs 3 mos

    • Led wireless deployments: RF design validation, contractor coordination, implementation, and production handover • Deployed enterprise Wi-Fi across 20+ manufacturing and warehouse sites (high-density, industrial environments) • Planned and executed LAN infrastructure refresh across multiple 24/7 production sites Technology stack: Ekahau, enterprise Wi-Fi, routing and switching

  • Senior Network engineer / Architect at GDC (Fujitsu preferred supplier of Services)
    Nov 2017 - Apr 2020 · 2 yrs 6 mos

    • Provided advanced operational support for large-scale datacenter network within a Tier-1 financial institution, serving as primary escalation point and on-site vendor representative. • Reviewed and validated architectural changes, supporting controlled production modifications within a live EVPN/VXLAN fabric. • Developed Python scripts to collect and analyze operational metrics from network devices, improving visibility into fabric performance. Technology stack: Huawei CloudEngine, Cisco Nexus, EVPN/VXLAN, BGP, OSPF, Python

  • Senior Network Engineer at VTB Capital
    Aug 2008 - Oct 2017 · 9 yrs 3 mos

    • Designed and operated global network infrastructure (data centers, WAN, international locations) • Built and operated connectivity to trading platforms and exchanges (NYSE, LSE, Bloomberg, Reuters, Fidessa, Quant House), supporting production trading systems Technology stack: Networking: BGP, OSPF, MPLS, Multicast, VPN, QoS Security: Firewalls, Proxy, SSL VPN, IPsec VPN, DDoS protection Platforms: Cisco, Juniper, Riverbed, Symantec (Blue Coat), Ivanti (Pulse Secure)

  • Network Engineer at CB Renaissance Credit
    Sep 2007 - Aug 2008 · 1 yr

    • Designed and operated MPLS network • Designed and deployed DMVPN network Technology stack: routing and switching, MPLS, DMVPN