Konstantin Chernov Email and Phone Number

Key Responsibilities:- Continuous Cloud Infrastructure Maintenance: Proficiently ensure the uninterrupted functionality of cloud infrastructure, guaranteeing optimal performance and reliability.- Development and Maintenance of Cloud- Applications: Spearhead the development and support of critical applications essential for cloud operations, such as console clients for communication with private cloud and daemons for resource management within containers.- Incident Resolution and Emergency Response: Swiftly address and resolve incidents and emergencies to minimize disruptions and maintain operational continuity.- Scheduled Duty Rotations: Consistently fulfill duty obligations according to predetermined schedules, ensuring comprehensive coverage and support.Notable Achievements:- Deployment of new Load Balancing Cluster: Led the successful launch of a new balancing cluster within one of the data centers, enhancing resource allocation and optimizing workload distribution.- Expansion of Cloud Installations: Orchestrated the deployment of separate cloud installations across three new data centers, expanding infrastructure capabilities and geographic reach.- Migration of ACL to Host-Based Firewall: Executed a seamless migration of Access Control Lists (ACL) from network equipment to Host-Based Firewalls, encompassing both bare-metal servers and cloud environments, ensuring enhanced security and streamlined management.

Orchestrated a complete migration of legacy IT infrastructure to achieve the active-active mode and the use of load balancing to make the system work seamless while allowing online updates. Established a staging environment from the ground up and streamlined delivery processes by implementing Ansible in tandem with TeamCity, thereby eliminating manual delivery procedures. Pioneered the adoption of Apache Karaf as the primary runtime environment for all internal tooling.With a small group of followers successfully designed and implemented a fault-tolerant OSGi-based solution for monitoring, log processing, and managed file transfer. Engineered a core subsystem for controlled job execution, facilitating the seamless migration of logic layer functionality from the database to Java. Transformed numerous untested shell-scripts into robust, thoroughly tested Java/Kotlin OSGi bundles (100+).Key Responsibilities:- Coordinating operational tasks across various departments- Implementing and overseeing system and application-level monitoring solutions- Developing internal automation frameworks- Actively engaging in diverse operational activities- Ensuring the continuous support of mission-critical systems- Strategizing the evolution and enhancement of IT infrastructureStack:- Oracle Solaris, Oracle Linux- Java, Kotlin- Tomcat, Spring Boot, WildFly- Apache, HAProxy- Karaf, OSGi- Kafka, ActiveMQ, ElasticSearch, Hazelcast- Kibana, Grafana- Oracle- JIRA, Confluence, BitBucket, Bamboo, TeamCity