Konstantin Korolev Email & Phone Number

Auckland, New Zealand

Achievements- Designed and implemented the Kubernetes cluster across 3 availability zones: Auckland, Christchurch and Sydney- Designed and implemented the S3 object store: based on Ceph multi-site configuration on top of Kubernetes cluster with active-active replication between Auckland and Christchurch- Automated the internal infrastructure deployment and patching including Swarm, MongoDB and Elasticsearch clusters- Developed a custom ansible module for Ruckus switches provisioningResponsibilities- Automation and tool development- Provide recommendations on advanced technologies, techniques and toolsets- Advise solutions, benchmark suggested designs and implement into production- Manage infrastructure with scripts and code- Maintain and fix issues with existing infrastructure and applications

Moscow, Russia

Achievements- Successfully designed non-functional part of architecture for the National Payment System of the Central Bank, which provided the data and workload distribution at metro distance and the level of availability for RPO=0 and RTO=0- Designed non-functional part of architecture and implemented Analytical System for Post Logistics with incoming workload of more than 3000 req/sec- Designed and supported the public portal of the Information Analysis System for the Ministry of Health- Contributed in the infrastructure design of Housing Services and Utilities portal- Supported development and operations of the government procurement portalResponsibilities- Understand business objectives, translate them into optimised and complete end-to-end solutions- Design, build and monitor large-scale Linux environments for stage and production purposes- Automate services delivery with minimal manual intervention- Design and implement DevOps toolchain services and CI/CD pipelines- Work closely with development teams to optimize workflow processes- Troubleshoot issues and proactively eliminate problems before they become incidents- Identify and mitigate risks- Validate and benchmark decisions with proof of concept models

Achievements- Designed and implemented a fault-tolerant solution for the enterprise PDM system, based on Oracle RAC and Citrix Xenserver- Increased productivity of stress-calculations by 3 times in small tasks and by 10 times in large tasks.- Implemented a centralized front-end interface for engineering systems with different HW architectures. Increased interface response and user satisfactionResponsibilities- Develop technical configuration/engineering solutions for products supported by IT team- Plan and implement infrastructure development strategy considering the business requirements, cost and current environment- Build, control and monitor HW and SW infrastructure- Analyse infrastructure performance, locate and resolve bottlenecks- Provide high availability for business-critical services- Respond to critical production issues and provide immediate workarounds to maintain business continuity- Manage infrastructure of about 100 servers based on SPARC (Solaris), x86_64 (RHEL) and Itanium, PA-RISC (HP-UX)- Manage Virtual environments based on VMware ESXi, Citrix XenServer and Oracle Logical Domains- Manage Enterprise storage array network (NetApp) and tape library- Manage Oracle Database and Oracle RAC

Achievements- Successfully designed and integrated HPC cluster into existing network- Built a grid computing environment based on Sun Grid Engine, which included 400 workstations and dozens of servers- Built high performance and resilient storage network using distributed network file systemsResponsibilities- Assist in long term planning and provide recommendations to management on enhancing technology utilisation- Implement HPC clusters as well as MPI and Grid technologies for productivity improvement- Manage and monitor HW and SW infrastructure- Maintain a network of 100 servers based on SPARC (Solaris) and x86_64(RHEL)- Create dedicated networks for specific projects and VPN tunnels for foreign customers- Investigate network latency and system performance issues

Responsibilities- Learn from IBM experts the principles of composing the hardware configuration for agrid computing environment.- Perform configurations and adjustments to enhance system performance.- Support 3rd party products on Linux platforms.

Responsibilities:- Manage server, network and storage systems.- Manage Unix operating systems and standard network services.- Provide operational support and performance tuning of Unix servers and applications.

Participation in development of Virtuozzo (virtualization platform) and HSPcomplete (system management of virtual servers and automation of hosting provider's operations).