Sergei A. DevOps Engineer/System Engineer/Solution Architect

DevOps, Solutions Architect

Summary

- DevOps Engineer/System Engineer/Solution Architect with a robust 19-year background in the IT field, particularly in the FMCG, Telecom, and Gaming sectors.
- Skilled in Suse, HP/Dell/Supermicro Products, Linux System Administration, Brocade Fibre Switches, and Software Installation.
- Strong information technology professional with good interpersonal and communication skills.
- Good troubleshooting and analytical skills.

Work Experience

DevOps Engineer, Support application

03.2023 – Present

Summary: The project was designed to help AWS users control and optimize costs in the cloud provider. The main feature is solutions to reduce resource consumption by up to 30% of the original, which significantly improves the distribution of infrastructure costs

Responsibilities & Achievements:

Creating Python and Bash scripts to automate routine tasks
Writing Ansible playbooks to run applications on a batch of servers
Automating AWS tasks using Ansible improves efficiency and reduces manual errors
Deploying and managing AWS resources, ensuring that they are secure, scalable, and highly available
Creating VPC in AWS, Public and Private Subnets, and security groups
Developing and maintaining backup and disaster recovery procedures for ArgoCD configurations
Preparing time/cost estimates for AWS infrastructure during presales activities for customers' development requests
Managing data and object storage for applications using S3
Deploying monitoring/logging solutions (ELK) and creating dashboards
Planning and implementing strategies for Nginx web server scalability
Providing technical support and systems troubleshooting
Conducting regular tests and drills to ensure the disaster recovery plan is effective and application is prepared
Implementing monitoring solutions to track the performance and health of the PostgreSQL database
Managing and maintaining Proxmox Virtual Environment (PVE) clusters, overseeing physical nodes and virtual machines
Improving current CI/CD pipelines
Performing Linux administration 3
Creating and maintaining technical documentation in Jira/Confluence

Technologies: AWS(VPC, KMS, ACM, EC2, Lambda, S3, Cloudwatch, Cloudtrail, Route53, MSK, EKS, ECR, RDS, CloudFormation, IAM), Python, Ansible, ElasticSearch, Kibana, Loki, PostgreSQL, Linux, Bash, Nginx, Docker/Docker Compose, Git, ArgoCD, Proxmox

Infrastructure Solution Architect, Infrastructure Solution Architecture

04.2018 – 03.2023

Summary: Providing infrastructure services around the world for gaming companies. CDN /Hosting/Cloud services.

Responsibilities & Achievements:

Collaborating with cross-functional teams to define integration requirements
Developing and designing infrastructure solutions that meet business requirements, considering factors like scalability, performance, security, and cost-effectiveness
Creating Server/Network High-Level Design for new Points of Presence
Integrating ArgoCD into the CI/CD pipeline to automate the deployment of applications
Setting up monitoring and alerting mechanisms within ArgoCD
Providing infrastructure management and improvement with Terraform
Developing deployment plans and timelines
Ensuring that project architecture aligns with and adheres to relevant architectural standards and best practices
Analyzing logs and implementing strategies to enhance the responsiveness and efficiency of the Nginx web server
Minimizing downtime through implementing recovery procedures and performing regular backups of data, configuring settings
Creating and maintaining KB SOP documentation for newcomers and field DC engineers 4
Installing and configuring the Zabbix monitoring system
Setting up Cisco devices for SNMP connectivity configuration
Designing Dell/Supermicro/HP Servers and Cisco/Arista Network hardware specifications and diversification across suppliers chain
Collaborating with database administrators to establish and maintain backup and recovery strategies
Performing presales for VMWare VxRail
Conducting VMware licensing activities
Taking part in daily stand-up meetings, sprint planning, sprint review, and sprint retrospective sessions

Technologies: AWS (VPC, KMS, ACM, EC2, Lambda, S3, Cloudwatch, Cloudtrail, Route53, MSK, EKS, ECR, RDS, CloudFormation, IAM), HP, Dell, Supermicro, Cisco Nexus, Arista, VMWare, Zabbix, Grafana, Prometheus, Netbox, SAP GUI, Jira/Confluence, CMDBuild, Docker/Docker Compose, Kubernetes(k8s), ArgoCD, Python, Terraform, Ansible, Nginx, PostgreSQL, GitHub Actions

DevOps Linux/Unix Infrastructure Support Analyst, International FMCG company

08.2015 – 04.2018

Summary: Operating systems support team (Core Team).

Responsibilities & Achievements:

Daily (shifts) L3 operations on Linux/Unix servers
Providing Linux disk subsystem performance analysis and improvements
Creating high-level design for cloud solutions on AWS
Researching and evaluating new technologies, products, and services to identify opportunities for improving the existing infrastructure
Performing deployment/migration/system server upgrade
Preparing a system to accept migrated components into a new environment
Managing rolling and blue/green model deployments for new application versions to the reserve infrastructure
Conducting CIP and Problem management activities
Developing training materials and providing ongoing support for users
Configuring and integrating frontend components with backend systems and databases, ensuring seamless data flow
Performing software and hardware upgrade activities
Managing change processes and activities within the specified domain of responsibility
Provisioning VMware virtual machines
Automating build processes, running tests, and deploying applications to the Nginx web server
Maintaining Relax-and-Recover (ReaR) tool
Setting up, configuring, and maintaining PostgreSQL database instances
Providing web interface development for ReaR backup vault, KB documentation, and handover to team operation
Pioneering AWS Cloud adoptions and rollouts in the company

Technologies: AWS (VPC, KMS, ACM, EC2, Lambda, S3, Cloudwatch, Cloudtrail, Route53, MSK, EKS, ECR, RDS, CloudFormation, IAM), HP, Linux HA, Bash, HP serviceGuard, SAP Netweaver, UNIX - HP-UX, Linux - SUSE/RHEL, CA Spectrum, PostgreSQL, SolarWinds, Nginx, ServiceNow

Storage & Backup Infrastructure Support Analyst, International FMCG company

06.2012 – 08.2015

Summary: Infrastructure support team (Core Team)

Responsibilities & Achievements:

Performing daily (shifts) L3 operations of storage and backup systems
Optimizing server performance by adjusting hardware settings (e.g., RAID configurations)
Optimizing operating system settings and monitoring resource usage to identify and resolve performance bottlenecks
Developing a disaster recovery plan that outlines how the company will respond to different types of disasters (async DB’s data replications FCIP cross DC’s, DR testing with magnet tapes recall from of site location)
Analyzing storage/backup incidents
Performing fulfillment of systems and file recovery requests
Providing fulfillment of FC SAN Zoning /Storage provisioning for server deployments/systems upgrade
Performing CIP and Problem management activities; software and hardware upgrade activities
In charge of Commvault backup solution early adoption

Technologies: HP 3par, EMC Clariion, IBM TSM, EMC DataDomain, CommVault, Cisco Nexus and MDS FC and FCoE switches, UNIX - HP-UX, Linux - SUSE/RHEL, Bash, CA Spectrum, SolarWinds, ServiceNow

International FMCG company

03.2008 – 06.2012

Roles:

L3 support for Avaya IP telephony
Deployment ip telephony systems
Systems rollout template owner
SIP infrastructure support and service management role
Call centers life cycle support and consulting

Responsibilities & Achievements:

Performing daily (shifts) L3 operations of IP telephony systems (about 12000 users ATW)
Troubleshooting IP telephony and CallCenter incidents and fulfillment analysis
Performing CIP and Problem management activities
Maintaining, managing, administering, and configuring infrastructure-related components, such as CISCO switches, routers
Providing knowledge management and standard operations procedure management for L1/L2 support
Performing software and hardware upgrade activities/change management activity in the domain of responsibility

Technologies: Avaya IP Telephony, Avaya Call Centers, SIP IP Telephony (openser/cisco gateway/softphone), CA Spectrum, SolarWinds, IBM BMC

Network Field Engineer/Pre-Sales engineer, Systems integrator company

09.2004 – 03.2008

Summary: Sales and integration company for network, computers, and telephony/call center systems

Responsibilities & Achievements:

Providing pre-sales activity for Cisco and Avaya equipment
Attending client meetings for technical clarifications & technical presentation
Identifying the most suitable solution and products, which complete the most optimum economical design alongside meeting the tender requirements and site conditions
Performing on-site hardware rollout activities
Providing technical support to customers

Technologies: Cisco IP Telephony, Call Manager, Avaya IP Telephony, Avaya CallCenter for SMB (IP office), CA Spectrum, MRTG

Education

Computer Science and Software Engineering

Certification

ITILv3/02444703-0
195IE
ITSM #12825
CTP #350218
CCNA(2010 expired)