Summary
Overview
Work History
Education
Skills
Websites
Professional Development
Personal Information
Accomplishments
Certification
Timeline
Generic
Sergey Terekhin

Sergey Terekhin

Sr. Storage & Virtualization Engineer
Buenos Aires, Argentina — Willing To Relocate

Summary

Senior Storage & Virtualization Engineer with 8+ years improving serviceability for Tier-1 banks and telecom across the CIS from Huawei's flagship regional office. HCIE-Storage & HCIE-Cloud certified and authorised HCIE-Storage examiner; mentored engineers to expert level while leading pre-GA validation, log-analysis and root-cause programs that boosted first-call resolution by 30 % on 500 + high-end Dorado arrays. Deep expertise in Fibre Channel SAN, NVMe-oF, Linux systems, VMware/KVM virtualization and metro-class BC&DR solutions (HyperMetro, synchronous replication). Ready to apply large-scale diagnostic, RCA and storage-architecture skills as a Senior Serviceability Engineer at Nutanix.

Overview

12
12
years of professional experience
6
6
years of post-secondary education
5
5
Certifications
3
3
Languages

Work History

Huawei Technical Consultant

LabVS
01.2023 - Current
  • Scaled Huawei practice from 0 → 300+ arrays (Dorado 8000/18000 v6, 3000/5510) in 24 months; Huawei revenue now ≈ 70 % of company profit.
  • Built a mirror lab (Dorado 8000 v6 + DP2200 + Zabbix/syslog/Grafana) to reproduce customer issues; enabled 30 % first-call resolution of software defects without vendor escalation.
  • Deployed Prometheus–Grafana dashboards for 200+ Huawei arrays; proactive tuning based on P95 latency trends cut 95th-percentile IO latency by 18 % and trimmed manual health-check time 30 %.
  • Led pre-release testing & fault-injection for new Dorado firmware; partnered with Huawei R&D via legacy contacts, supplied 40+ defect-reports, 18 critical bugs fixed before GA.
  • Authored serviceability guidelines (log decoding, compatibility checks, QA matrix); trained 7 engineers → all passed HCIP-Storage , 3 preparing for HCIE .
  • Delivered 64 presale designs (SAN / NVMe-oF / BC&DR); closed flagship wins:
    24× Dorado 8000 v6 @Tier-1 bank (high-end core) — on-time install, zero Sev-1 during go-live.
    8× Dorado 8000 + 2× 18000 v6 @Tier-1 bank; acted as vendor, shipped custom ZIP kits.
  • Automated log-parsing & performance analytics : Python pipeline → capacity & IOPS trend reports, config-best-practice audit; reduced manual report prep from 24 h → 25 min.
  • Designed and implemented BC&DR architecture for a Tier-1 bank (Dorado 8000 v6); achieved RPO = 0 min and RTO ~ 0 min, ensuring zero data loss during failover tests.
  • Grew installed base support YoY +294 % (200+ new assets in 2024) while sustaining 99.9 % SLA.

Professional Service IT Team Lead

HUAWEI
05.2020 - 01.2023
  • Grew professional-service team from **8 → 18 engineers**; built local BC&DR and data-migration expertise that generated +35 % PS revenue YoY.
    • Collected **50 + new-feature requirements** from Tier-1 bank; coordinated PoC in lab, validated against prod workloads; Huawei R&D accepted 60 % of requests for roadmap delivery.
  • Drove weekly defect-review calls with Shenzhen R&D; resolved 20 + Severity-1 cases, achieving **0 customer outages** across 24 strategic storage networks during 2020.
  • Acted as on-site Technical Director for VIP bank (6-person SWAT team); provided proactive support and quarterly executive briefings up to Deputy CIO level — **100 % CSAT** maintained.
  • Maintained multi-vendor lab (200 + servers, storage, switches, FW); built hands-on clusters for A-A metro storage, Huawei Cloud, SDS, VDI, and Prometheus + Grafana monitoring.
  • Planned and executed **5 PB online array-based migration** (controller-level virtualization); completed cut-over with zero data loss and **no application downtime**.

Technical Account Manager (VIP Accounts)

HUAWEI
12.2018 - 05.2020
  • Owned end-to-end delivery, proactive support, and maintenance for 4 VIP financial-sector customers (> 300 storage & compute nodes); single technical contact up to Deputy CIO level.
  • Produced weekly status decks and quarterly executive business reviews, sustaining > 95 % CSAT and securing FR-warranty renewals worth US$ 2 M.
  • Planned and executed 1.2 PB **online array-based migration** between Dorado V3 arrays; completed cut-over with zero data-loss and **no application downtime**.
  • Ran proactive health checks and risk forecasts; reduced customer-reported Severity-1 incidents **40 % YoY** via early firmware baselining and config audits.
  • • Led 30+ storage PoCs (Dorado 8000/18000, NVMe-oF, HyperMetro); achieved > 2 M IOPS @ < 1 ms and secured an 85 % win-rate, driving a multi-million-dollar sales pipeline.
  • Collaborated with Huawei R&D during PoC sprints to tune firmware (QoS burst, cache-flush, NVMe path-failback); **3 customer-driven features** merged into GA within two release cycles.
  • Coordinated cross-functional teams (Support, Logistics, R&D) to meet 4-hour SLA; achieved **100 % on-time part delivery** across 24 strategic storage networks.

Senior Professional Service Engineer

HUAWEI
12.2017 - 12.2018
  • Executed 120 + field deployments and remediation engagements (servers, SAN, virtualization, backup); resolved high-severity incidents on-site under 4-hour SLA.
  • Designed and launched **FusionSphere + HyperMetro DR** for city e-gov: two Dorado V3 AFA arrays, zero-RPO synchronous replication across metro distance.
  • Piloted Huawei **VDI-GPU + SDS** PoC for national sports TV channel; tuned write-cache to meet 4K-video latency < 2 ms, enabling green-light to production roll-out.
  • Integrated **7 000 + servers & 40 + storage arrays** for Russia's largest bank; led zoning, multipath, and fail-over testing, achieving 99.99 % availability at go-live.
  • Expanded city CCTV storage cluster to 18 000 + IP-cameras; optimized RAID-stripe and cache policy, boosting sustained ingest throughput by **28 %** without HW upgrade.

Customer Service Engineer

HUAWEI
04.2017 - 12.2017
  • Handled 1st-line warranty support for OceanStor V3, FusionServer, FusionCompute & SAN switches; closed 150+ tickets with 92 % first-day resolution.
  • Triaged cross-product issues (storage ↔ hypervisor ↔ network), escalating only 5 % to L3; built internal KB articles adopted by wider support team.
  • Achieved **HCIE-Storage** certification just 8 months after hire (fastest in regional team); promoted to Professional Service Engineer.
  • Mentored new hires and represented Russia region in Huawei global support contest, placing in top-10 %.

Field Systems Engineer

Croc Inc.
07.2014 - 04.2017
  • Delivered on-site installation, testing, and break-fix support for multi-vendor infrastructures (HP, Dell, Cisco, IBM, EMC, Brocade, VMware, Red Hat); closed 200 + service tickets with 98 % SLA compliance.
  • Built and documented end-to-end solutions for flagship customers — e.g. traffic-analytics platform expansion (VimpelCom), network-information system (Transneft), and Skolkovo datacenter upgrade — producing survey reports and acceptance test procedures.
  • Provisioned and supported VM workloads on CROC Cloud ; automated backup policies (NetBackup, Veeam, Commvault), reducing RTO by 40 % for tier-2 customers.

Junior Game Server Support

Innova Systems
04.2013 - 07.2014

Education

Master of Science - Autonomous Information & Control Systems

Bauman State Technical University
Moscow
05.2009 - 07.2015

Skills

    SAN & NVMe-oF Architecture

    VMware ESXi / KVM

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Professional Development

  • 2022, Cloud Service Engineer, Yandex Practicum
  • 2022, Python, Stepik
  • 2022, Pyneng, Python for Network engineers

Personal Information

• Willing to relocate to USA, CA; open to limited business travel.  
• Will require employer-sponsored U.S. work visa (e.g., H-1B).

Accomplishments

    • Selected as authorized HCIE-Storage examiner; proctored and graded 30+ global expert-level exams.

Certification

HCIE-Storage (initial 2018, recertified 2025)

Timeline

RHCSA — Red Hat Certified System Administrator (in progress)

07-2025

Huawei Technical Consultant

LabVS
01.2023 - Current

HCIA-Routing&Switching

05-2020

Professional Service IT Team Lead

HUAWEI
05.2020 - 01.2023

Authorized HCIE-Storage Examiner

01-2020

HCIE-Cloud Computing

04-2019

Technical Account Manager (VIP Accounts)

HUAWEI
12.2018 - 05.2020

HCIE-Storage (initial 2018, recertified 2025)

03-2018

Senior Professional Service Engineer

HUAWEI
12.2017 - 12.2018

Customer Service Engineer

HUAWEI
04.2017 - 12.2017

Field Systems Engineer

Croc Inc.
07.2014 - 04.2017

Junior Game Server Support

Innova Systems
04.2013 - 07.2014

Master of Science - Autonomous Information & Control Systems

Bauman State Technical University
05.2009 - 07.2015

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Sergey TerekhinSr. Storage & Virtualization Engineer