> ## Documentation Index
> Fetch the complete documentation index at: https://notes.vvkhash.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Software/systems engineer

## Areas of Expertise

<Columns cols={2}>
  <Column>
    <Card title="DevOps & CI/CD" icon="arrows-rotate" href="/devops/overview">
      Pipeline design and day-two operations across GitLab CI, Jenkins, Tekton, Bamboo, and GoCD — with a particular emphasis on reproducible, container-based builds.
    </Card>

    <Card title="Cloud & Infrastructure" icon="cloud" href="/cloud/aws">
      Deep AWS experience (primary cloud), plus GCP and Azure. Infrastructure-as-Code with Terraform and Ansible, and FinOps cost-optimisation across all three providers.
    </Card>
  </Column>

  <Column>
    <Card title="Site Reliability Engineering" icon="gauge-high" href="/linux/troubleshooting">
      Observability stacks (Prometheus/Grafana, ELK, Zabbix), incident response, capacity planning, and SLO/SLA design in high-availability environments.
    </Card>

    <Card title="Linux & Systems" icon="terminal" href="/linux/essentials">
      25+ years of Linux administration, Bash scripting, networking, and systems-level troubleshooting on everything from VMs to Kubernetes nodes.
    </Card>
  </Column>
</Columns>

### Container & Orchestration Platforms

Valeriy works daily with **Docker**, **Kubernetes**, **Nomad**, and **Proxmox** — covering the full spectrum from local development containers to multi-cluster production deployments.

<CardGroup cols={2}>
  <Card title="Docker" icon="docker" href="/devops/docker">
    Build optimisation, multi-stage images, registries, and Compose patterns.
  </Card>

  <Card title="Kubernetes" icon="dharmachakra" href="/devops/kubernetes">
    Workload management, networking, RBAC, and cluster operations.
  </Card>
</CardGroup>

### Data & Observability

Production experience with **MySQL**, **PostgreSQL**, **Greenplum**, and **Oracle** databases, combined with observability pipelines built on Prometheus, Grafana, ELK, and Zabbix.

## Certifications

The following credentials reflect formal validation of the topics covered in these notes:

<Expandable title="details">
  <Columns cols={3}>
    <Column>
      <Card title="AWS Certified Solutions Architect - Associate" horizontal img="https://mintcdn.com/vvkhashcom/RF2KaskLmSPvrAJH/about/assets/pro-certification-badges/aws-certified-solutions-architect-associate.png?fit=max&auto=format&n=RF2KaskLmSPvrAJH&q=85&s=ced18d6de9273368f357f30eb25f4561" width="600" height="600" data-path="about/assets/pro-certification-badges/aws-certified-solutions-architect-associate.png">
        Issued by  Amazon Web Services Training and Certification

        [Details...](https://www.credly.com/badges/887e3c33-a6a8-4024-a6d5-ce62638d66dc/public_url)
      </Card>
    </Column>

    <Column>
      <Card title="Well-Architected Proficient" horizontal img="https://mintcdn.com/vvkhashcom/l3NsGXjCrKdY3HVJ/about/assets/pro-certification-badges/well-architected-proficient.png?fit=max&auto=format&n=l3NsGXjCrKdY3HVJ&q=85&s=ae4174b7b66ed818eaa2153f3bcb055c" width="294" height="294" data-path="about/assets/pro-certification-badges/well-architected-proficient.png">
        Issued by  Amazon Web Services Training and Certification

        [Details...](https://www.credly.com/badges/7a33614c-a362-4600-83b7-ed5a5d21d780/public_url)
      </Card>
    </Column>

    <Column>
      <Card title="AWS Partner: Technical Accredited" horizontal img="https://mintcdn.com/vvkhashcom/l3NsGXjCrKdY3HVJ/about/assets/pro-certification-badges/aws-partner-accreditation-technical.png?fit=max&auto=format&n=l3NsGXjCrKdY3HVJ&q=85&s=31a20801b397749874ca7d8f97ade55a" width="294" height="294" data-path="about/assets/pro-certification-badges/aws-partner-accreditation-technical.png">
        Issued by  Amazon Web Services Training and Certification

        [Details...](https://www.credly.com/badges/895435eb-2c1a-493f-9344-538a1ddbd89c/public_url)
      </Card>
    </Column>

    <Column>
      <Card title="AWS Cloud Quest: Cloud Practitioner" horizontal img="https://mintcdn.com/vvkhashcom/l3NsGXjCrKdY3HVJ/about/assets/pro-certification-badges/aws-cloud-quest-cloud-practitioner.png?fit=max&auto=format&n=l3NsGXjCrKdY3HVJ&q=85&s=547a00b4c20e122481492f0395e2a295" width="294" height="294" data-path="about/assets/pro-certification-badges/aws-cloud-quest-cloud-practitioner.png">
        Issued by  Amazon Web Services Training and Certification

        [Details...](https://www.credly.com/badges/b12fe10e-7eb2-4428-b94f-5220be8a6ffc/public_url)
      </Card>
    </Column>

    <Column>
      <Card title="AZ-900" horizontal img="https://mintcdn.com/vvkhashcom/l3NsGXjCrKdY3HVJ/about/assets/pro-certification-badges/badge-ms-az-900.jpeg?fit=max&auto=format&n=l3NsGXjCrKdY3HVJ&q=85&s=479587b67e6220ed449645f96735f149" width="130" height="134" data-path="about/assets/pro-certification-badges/badge-ms-az-900.jpeg">
        Issued by Microsoft

        [Details...](https://learn.microsoft.com/api/credentials/share/en-us/ValeriyKhashkovskiy-9310/F4A3AA8196FC1DB7?sharingId)
      </Card>
    </Column>

    <Column>
      <Card title="FinOps" horizontal img="https://mintcdn.com/vvkhashcom/l3NsGXjCrKdY3HVJ/about/assets/pro-certification-badges/finops-certified-practitioner.3.png?fit=max&auto=format&n=l3NsGXjCrKdY3HVJ&q=85&s=b8ad9a6cb740279ff7defcfff8723f85" width="294" height="294" data-path="about/assets/pro-certification-badges/finops-certified-practitioner.3.png">
        Issued by The Linux Foundation

        [Details...](https://www.credly.com/badges/b0f0dc44-53ef-496b-b7b1-d2f0a8014136/public_url)
      </Card>
    </Column>

    <Column>
      <Card title="Modern Technology with MACH" horizontal img="https://mintcdn.com/vvkhashcom/l3NsGXjCrKdY3HVJ/about/assets/pro-certification-badges/modern-technology-with-mach.1.png?fit=max&auto=format&n=l3NsGXjCrKdY3HVJ&q=85&s=67fb8483cb2872b4f5070b2adff571a2" width="296" height="296" data-path="about/assets/pro-certification-badges/modern-technology-with-mach.1.png">
        Issued by MACH Alliance

        [Details...](https://www.credly.com/badges/078ad896-829c-4e49-ae30-d59aa0994dc8/public_url)
      </Card>
    </Column>

    <Column>
      <Card title="MACH Mindset" horizontal img="https://mintcdn.com/vvkhashcom/l3NsGXjCrKdY3HVJ/about/assets/pro-certification-badges/mach-mindset.png?fit=max&auto=format&n=l3NsGXjCrKdY3HVJ&q=85&s=7a2bd7978350694655f4ff8e0aae50f3" width="296" height="296" data-path="about/assets/pro-certification-badges/mach-mindset.png">
        Issued by MACH Alliance

        [Details...](https://www.credly.com/badges/aa3cf3d6-edca-4a38-a333-c9bcf48713d0/public_url)
      </Card>
    </Column>
  </Columns>
</Expandable>

## Experience

<Expandable title="details">
  <Accordion title="[ 2019 - now ] - Lead systems engineer @ EPAM Systems">
    <Columns cols={2}>
      <Column>
        <Frame>
          <img src="https://mintcdn.com/vvkhashcom/_NYA1BdwDnI8iIJT/about/assets/logo_org/logo_epam.png?fit=max&auto=format&n=_NYA1BdwDnI8iIJT&q=85&s=858552640a8f1425316f23dd428eb889" className="mx-auto" width="4478" height="3358" data-path="about/assets/logo_org/logo_epam.png" />
        </Frame>
      </Column>

      <Column>
        **Project domains:** Financial, Insurance, Fashion retail, Healthcare **Roles:** Key Engineer, FinOps engineering, Build engineer, Developer, Devops team coordinator, Solution consultant, IAAC/CI/CD Auditor

        **Tools and tech:** Cloudhealth, Kubernetes, Kafka, GItlab-CI/CD, Helm, Zipkin, GItlab-CI/CD, Kafka SASL/PLAINTEXT/SSL, Jenkins and Gitlab pipelines, Greenplum (OSS Contribution, gnuC, make),Openstack/terraform (terragrunt), GoCD, Concourse-CI, Ansible, Nomad/Consul, Envoy, MSSQL, Mongo, Postgres, Prometheus/Grafana and ELK, Keycloak.
      </Column>
    </Columns>
  </Accordion>

  <Accordion title="[ 2017 - 2019 ] DevOps eng, SRE/System administrator @ [Сontract jobs]">
    <Columns cols={2}>
      <Column>
        <Frame>
          <img src="https://mintcdn.com/vvkhashcom/ZPtb3QI1dAkhCYMF/about/assets/logo_org/logo_nologo.png?fit=max&auto=format&n=ZPtb3QI1dAkhCYMF&q=85&s=200b46fc7123fa1211ddee8827dbcf1e" className="mx-auto" width="137" height="137" data-path="about/assets/logo_org/logo_nologo.png" />
        </Frame>
      </Column>

      <Column>
        **Projects:** Deploying EC2 instance / RDS Postgres on AWS,  Deploying a MongoDB Cluster on the Digital Ocean Platform, Deploying a 3-node infrastructure based on Virtualbox, configure PTP measuring based on Zabbix monitoring, Configuration and maintenance of environment services, configuration of Devops processes. Support for trouble-free operation of services, completion of the code base,  Installation / configuration / maintenance of the development environment, development team/project management, Configuration and maintenance of environment services, configuration of Devops processes. Support for trouble-free operation of services, completion of the code base

        **Tools:** Terraform, Ansible, AWS EC2/RDS, MongoDB, Vagrant, VirtualBox, Zabbix, Docker, K8s, GitLab, Cassandra (+papertrail, +travis-ci), nginx, mysql, php, jenkins, redmine
      </Column>
    </Columns>
  </Accordion>

  <Accordion title="[ 2017-2018 ]** DevOps eng, SRE/System administrator @ Oggetto Web, LLC">
    <Columns cols={2}>
      <Column>
        <Frame>
          <img src="https://mintcdn.com/vvkhashcom/ZPtb3QI1dAkhCYMF/about/assets/logo_org/logo_oggetto.png?fit=max&auto=format&n=ZPtb3QI1dAkhCYMF&q=85&s=1d4ff9e1176b50bc12e3e8909c16d281" className="mx-auto" width="769" height="769" data-path="about/assets/logo_org/logo_oggetto.png" />
        </Frame>
      </Column>

      <Column>
        **Projects:** Installation, configuration and maintenance of e-commerce systems on the platform Magento 1 / Magento 2 (ce, ee), deployment management in dev / prod environment, user support

        **Tools and Tech:** CentOS/Debian, nginx, mysql, php, jenkins, git/gitlab, lxc/docker, ansible, ELK, redmine, haproxy, keepalived, galera-cluster
      </Column>
    </Columns>
  </Accordion>

  <Accordion title="[ 2009-2017 ]** Deputy Director for Science @ Inostudio solutions, LLC">
    <Columns cols={2}>
      <Column>
        <Frame>
          <img src="https://mintcdn.com/vvkhashcom/_NYA1BdwDnI8iIJT/about/assets/logo_org/logo_inostudio.png?fit=max&auto=format&n=_NYA1BdwDnI8iIJT&q=85&s=4ec23dad4a9072c5c2b34842388968f4" className="mx-auto" width="200" height="200" data-path="about/assets/logo_org/logo_inostudio.png" />
        </Frame>
      </Column>

      <Column>
        **Projects:** Management of mobile and web development laboratory SCINO, organization of interaction with divisions of the Southern Federal University, R\&D
      </Column>
    </Columns>
  </Accordion>

  <Accordion title="[ 2005-2009 ] Leading Specialist of the Chief Designer Department @ Federal Cadastral Center 'ZEMLYA'">
    <Columns cols={2}>
      <Column>
        <Frame>
          <img src="https://mintcdn.com/vvkhashcom/ZPtb3QI1dAkhCYMF/about/assets/logo_org/logo_nologo.png?fit=max&auto=format&n=ZPtb3QI1dAkhCYMF&q=85&s=200b46fc7123fa1211ddee8827dbcf1e" className="mx-auto" width="137" height="137" data-path="about/assets/logo_org/logo_nologo.png" />
        </Frame>
      </Column>

      <Column>
        **Projects:** Organization and support of software production technologies, software testing, software production information support. Preparation of software documentation, testing documentation. Testing software systems.

        **Tools and Tech:**  Delphi, SVN, Oracle, Action Recorder
      </Column>
    </Columns>
  </Accordion>

  <Accordion title="[ 2005-2006 ] System administrator @ YUZHNYI REGION, LLC">
    <Columns cols={2}>
      <Column>
        <Frame>
          <img src="https://mintcdn.com/vvkhashcom/ZPtb3QI1dAkhCYMF/about/assets/logo_org/logo_nologo.png?fit=max&auto=format&n=ZPtb3QI1dAkhCYMF&q=85&s=200b46fc7123fa1211ddee8827dbcf1e" className="mx-auto" width="137" height="137" data-path="about/assets/logo_org/logo_nologo.png" />
        </Frame>
      </Column>

      <Column>
        **Projects:** Installation, configuration and maintenance of the main server of the enterprise: creating a virtualized platform and configuring guest systems for external services. User Support, LAN installation.

        **Tools and Tech:**  CentOS, nginx, mysql, php, postfix, dovecot, SMB, FTP, VirtualBox. Windows 2003/AD/PDC.
      </Column>
    </Columns>
  </Accordion>

  <Accordion title="[ 2005-2006 ] System administrator @ BAZA DESIGN, LLC">
    <Columns cols={2}>
      <Column>
        <Frame>
          <img src="https://mintcdn.com/vvkhashcom/ZPtb3QI1dAkhCYMF/about/assets/logo_org/logo_nologo.png?fit=max&auto=format&n=ZPtb3QI1dAkhCYMF&q=85&s=200b46fc7123fa1211ddee8827dbcf1e" className="mx-auto" width="137" height="137" data-path="about/assets/logo_org/logo_nologo.png" />
        </Frame>
      </Column>

      <Column>
        **Projects:** Installation, configuration and maintenance of the main server of the enterprise, user support

        **Tools and Tech:**  CentOS, nginx, mysql, php, postfix, dovecot.
      </Column>
    </Columns>
  </Accordion>

  <Accordion title="[ 2004-2005 ]** System administrator @ Agro-industrial company 'KARAVAY PLUS'">
    <Columns cols={2}>
      <Column>
        <Frame>
          <img src="https://mintcdn.com/vvkhashcom/ZPtb3QI1dAkhCYMF/about/assets/logo_org/logo_nologo.png?fit=max&auto=format&n=ZPtb3QI1dAkhCYMF&q=85&s=200b46fc7123fa1211ddee8827dbcf1e" className="mx-auto" width="137" height="137" data-path="about/assets/logo_org/logo_nologo.png" />
        </Frame>
      </Column>

      <Column>
        **Projects:** Installation and administration of the company's Internet server, Customer support

        **Tools and Tech:**  FreeBSD, nginx, mysql, php, postfix, dovecot
      </Column>
    </Columns>
  </Accordion>

  <Accordion title="[ 2005 - 2022 ] Southern Federal University (SFEDU, http://sfedu.ru) (former Taganrog State University of Radioengineering (TSURE), Russia, Taganrog), 08/2005 / Ph.D., Assoc. prof. at Software engineering department">
    <Columns cols={2}>
      <Column>
        <Frame>
          <img src="https://mintcdn.com/vvkhashcom/ZPtb3QI1dAkhCYMF/about/assets/logo_org/logo_sfedu.png?fit=max&auto=format&n=ZPtb3QI1dAkhCYMF&q=85&s=cb7264a737770b94d7e3906b11162d92" className="mx-auto" width="100" height="100" data-path="about/assets/logo_org/logo_sfedu.png" />
        </Frame>
      </Column>

      <Column>
        **Projects:**  Lectures on the following disciplines: “Administration of Information Systems on the Unix / Linux Platform”, “Administration of Information Systems on the Oracle Platform”, “Theory of Computational Processes”, “Distributed and Cloud Computing, Parallel Programming”, supervising of more than 150th bachelor and masters theses.

        Modernization and maintenance of the department's computer network. Configuration of main servers, installation, configuration and maintenance of a computing cluster on the HP BL-460c platform for organizing a virtual student laboratory and high-performance computing, about 50 virtual machines .; Software development for the organization and processing of centralized testing results. Installation and configuration of web servers, reverse proxying for individual sites (more than 15 sites)

        **Tools and Tech:** 5 labs, Server farm (Sun v40z, Sunfire 2200, HP BL 460c (16 узлов)/mellanox Infiniband);Linux/Windows Server (2000, 2003/AD, PDC/BDC), VMWare GSX Server/KVM/QEMU/VirtualBox, nginx, mysql, squid, iptables...etc/Proxmox/OpenNebula, Delphi/Object Pascal
      </Column>
    </Columns>
  </Accordion>

  <Accordion title="[ 1997 ] Programmer for Built-in systems @ JSC 'Scientific design office computing systems'">
    <Columns cols={2}>
      <Column>
        <Frame>
          <img src="https://mintcdn.com/vvkhashcom/_NYA1BdwDnI8iIJT/about/assets/logo_org/logo_nkbvs.jpg?fit=max&auto=format&n=_NYA1BdwDnI8iIJT&q=85&s=d083805b019c96cd0b0fef5e43b82a62" className="mx-auto" width="200" height="200" data-path="about/assets/logo_org/logo_nkbvs.jpg" />
        </Frame>
      </Column>

      <Column>
        **Projects:** Development of embedded software for onboard built-in systems

        **Tools and Tech:**   DSP (TMS) Assembler
      </Column>
    </Columns>
  </Accordion>
</Expandable>

## Education

<Expandable title="details">
  <Columns cols={2}>
    <Column>
      <Frame>
        <img src="https://mintcdn.com/vvkhashcom/ZPtb3QI1dAkhCYMF/about/assets/logo_org/logo_sfedu.png?fit=max&auto=format&n=ZPtb3QI1dAkhCYMF&q=85&s=cb7264a737770b94d7e3906b11162d92" className="mx-auto" width="100" height="100" data-path="about/assets/logo_org/logo_sfedu.png" />
      </Frame>
    </Column>

    <Column>
      <Expandable title="08/2005 - Graduated from Southern Federal University, Assoc. prof. / Docent">
        ![](https://www.dropbox.com/scl/fi/2kld3ekzw65k73hs7d0wo/diplom-assoc_prof.jpg?rlkey=wd86wgqsjr8xpgszgt2v9lon1\&st=w0xsviyr\&dl=1)
      </Expandable>
    </Column>

    <Column>
      <Frame>
        <img src="https://mintcdn.com/vvkhashcom/_NYA1BdwDnI8iIJT/about/assets/logo_org/logo_tsure.png?fit=max&auto=format&n=_NYA1BdwDnI8iIJT&q=85&s=be0a1e96c983993ebd2191c0fbc42526" className="mx-auto" style={{ width:"49%" }} width="200" height="200" data-path="about/assets/logo_org/logo_tsure.png" />
      </Frame>
    </Column>

    <Column>
      <Expandable title="08/2002 - Graduated from Taganrog State University of Radioengineering, Ph.D">
        ![](https://www.dropbox.com/scl/fi/cyxvilt3lsegyrpa98rhj/diplom-phd.jpg?rlkey=050yk00v0e5jw2l4q4r0u6ead\&st=yvnasuhg\&dl=1)
      </Expandable>
    </Column>

    <Column>
      <Frame>
        <img src="https://mintcdn.com/vvkhashcom/_NYA1BdwDnI8iIJT/about/assets/logo_org/logo_tsure.png?fit=max&auto=format&n=_NYA1BdwDnI8iIJT&q=85&s=be0a1e96c983993ebd2191c0fbc42526" className="mx-auto" style={{ width:"49%" }} width="200" height="200" data-path="about/assets/logo_org/logo_tsure.png" />
      </Frame>
    </Column>

    <Column>
      <Expandable title="08/1998 - Graduated from Taganrog State University of Radioengineering, Master’s degree in Tech. and Technologies">
        ![](https://www.dropbox.com/scl/fi/4ylvs5q0czyynct4ocitl/diplom-master.jpg?rlkey=7ntd91bqr88ln88vkmuaxoao5\&st=04k5dn1d\&dl=1)
      </Expandable>
    </Column>

    <Column>
      <Frame>
        <img src="https://mintcdn.com/vvkhashcom/_NYA1BdwDnI8iIJT/about/assets/logo_org/logo_tsure.png?fit=max&auto=format&n=_NYA1BdwDnI8iIJT&q=85&s=be0a1e96c983993ebd2191c0fbc42526" className="mx-auto" style={{ width:"49%" }} width="200" height="200" data-path="about/assets/logo_org/logo_tsure.png" />
      </Frame>
    </Column>

    <Column>
      <Expandable title="04/1997 - Graduated from Taganrog State University of Radioengineering, Engineer's degree in Software engineering">
        ![](https://www.dropbox.com/scl/fi/p31y8ch9dkllxap0iw6br/diplom-engineer.jpg?rlkey=sxqvcjmjzvr9g3o4wb18y7ug6\&st=y1ka2v8w\&dl=1)
      </Expandable>
    </Column>

    <Column>
      <Frame>
        <img src="https://mintcdn.com/vvkhashcom/_NYA1BdwDnI8iIJT/about/assets/logo_org/logo_tsure.png?fit=max&auto=format&n=_NYA1BdwDnI8iIJT&q=85&s=be0a1e96c983993ebd2191c0fbc42526" className="mx-auto" style={{ width:"49%" }} width="200" height="200" data-path="about/assets/logo_org/logo_tsure.png" />
      </Frame>
    </Column>
  </Columns>
</Expandable>