Experience

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  Mera

  Apr 2011 - Jul 2016

  Troubleshooting and software design maintenance of SGSN-MME node, a key carrier-grade telecom node for GSM, 3G/WCDMA and LTE networks running in a multi-blade, multi-OS environment with 5 nines degree of availability - investigation of software issues - preparing software corrections (design, code review, verification) - interaction with customer network support teamsArea of responsibility: - link & routing subsystem (routing, dynamic routing protocols, custom forwarding engine, Linux network stack, L2/L3 switch setup) - real-time OS subsystem (Windriver Linux, Windriver VxWorks + custom patches) Show less

  • Software Designer

    Oct 2013 - Jul 2016

  • Software Engineer

    Apr 2011 - Oct 2013
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  Virtuozzo

  Nov 2016 - Apr 2021

  Software developer

  Hypervisor team (qemu/kvm): - optimized block/storage layer, qcow2 disk image driver, backup/mirroring features - worked with open-source community to merge-in the developed patchesStorage team:working on a software defined storage solution, distributed fault-tolerant data storage system with various access interfaces (FUSE filesystem, iSCSI, NFS, S3). Improving performance of backbone data storage services. Developing interface services, configuration+monitoring+failover services. - RPC optimizations (networking/protocol) - I/O optimizations - lowering operation latency with fast storage tiers, NVDIMM, Optane based - lowering write amplification by enhancing garbage collection procedures for erasure-encoded files Show less