- Engineered and implemented AWS architectures with a focus on infrastructure automation using Terraform and Terragrunt.- Served as a strategic technical advisor, managing cybersecurity risks and guiding enterprise clients through cloud migration initiatives.Provided end-to-end support for enterprise cloud migration projects, including:- Architecture Design: Developed scalable, resilient, and fault-tolerant cloud architectures tailored to enterprise needs.- Migration… Show more - Engineered and implemented AWS architectures with a focus on infrastructure automation using Terraform and Terragrunt.- Served as a strategic technical advisor, managing cybersecurity risks and guiding enterprise clients through cloud migration initiatives.Provided end-to-end support for enterprise cloud migration projects, including:- Architecture Design: Developed scalable, resilient, and fault-tolerant cloud architectures tailored to enterprise needs.- Migration Planning: Created detailed migration plans to transition complex infrastructures to the cloud smoothly and securely.- Infrastructure as Code (IaC): Leveraged IaC tools to streamline deployment and ensure consistency and repeatability.- Scalability and Resilience: Ensured solutions met high availability and disaster recovery requirements, essential for large-scale operations. Show less

I took the lead in conducting all red team exercises, directing a team of skilled professionals to simulate cyberattacks and identify potential vulnerabilities. - Network penetration testing- Cloud penetration testing- Web application penetration testing- OSINT- Vulnerability researchContacting clients, working with documentation, subcontracting and some other operation activities- Engineered and implemented AWS architectures with a focus on… Show more I took the lead in conducting all red team exercises, directing a team of skilled professionals to simulate cyberattacks and identify potential vulnerabilities. - Network penetration testing- Cloud penetration testing- Web application penetration testing- OSINT- Vulnerability researchContacting clients, working with documentation, subcontracting and some other operation activities- Engineered and implemented AWS architectures with a focus on infrastructure automation using Terraform and Terragrunt.- Served as a strategic technical advisor, managing cybersecurity risks and guiding enterprise clients through cloud migration initiatives.Provided end-to-end support for enterprise cloud migration projects, including:- Architecture Design: Developed scalable, resilient, and fault-tolerant cloud architectures tailored to enterprise needs.- Migration Planning: Created detailed migration plans to transition complex infrastructures to the cloud smoothly and securely.- Infrastructure as Code (IaC): Leveraged IaC tools to streamline deployment and ensure consistency and repeatability.- Scalability and Resilience: Ensured solutions met high availability and disaster recovery requirements, essential for large-scale operations. Show less

- AWS Cloud management- Terraform scripting- Debug incidents- Architecture design restructure- CI/CD with dockers- Managed AWS cloud infrastructure and developed CI/CD pipelines using Docker.- Rewrote approximately 50 services across 5 environments using Terraform, Establishing infrastructure as code standards.- Defined and enforced SRE requirements, translating reliability and scalability goals into actionable DevOps tasks.- Led crisis management efforts… Show more - AWS Cloud management- Terraform scripting- Debug incidents- Architecture design restructure- CI/CD with dockers- Managed AWS cloud infrastructure and developed CI/CD pipelines using Docker.- Rewrote approximately 50 services across 5 environments using Terraform, Establishing infrastructure as code standards.- Defined and enforced SRE requirements, translating reliability and scalability goals into actionable DevOps tasks.- Led crisis management efforts, addressing high-impact incidents with efficient troubleshooting and strategic solutions to restore service stability.- Restructured architecture designs to optimize performance, resilience, and reliability in production environments. Show less

- AWS Cloud management- CI/CD management- IaC with terraform

Managing AWSLeveraging its wide array of services to support our operations.Kubernetes to manage our application's deployment, scaling, and management, thus ensuring optimal system performance and stability.Continuous Integration/Continuous Deployment (CI/CD) pipeline using GitLab, Docker, and Kubectl.

My role involved leading and managing a talented DevOps team, guiding them towards the achievement of organizational objectives. I oversaw the implementation of 24/7 monitoring protocols (via SMS/email/call), ensuring minimal service disruption and immediate response to potential system issues.I facilitated the integration of client projects with a suite of DevOps tools including Ansible, Jira, and Slack for seamless Continuous Integration (CI). My dedication to maintaining robust and… Show more My role involved leading and managing a talented DevOps team, guiding them towards the achievement of organizational objectives. I oversaw the implementation of 24/7 monitoring protocols (via SMS/email/call), ensuring minimal service disruption and immediate response to potential system issues.I facilitated the integration of client projects with a suite of DevOps tools including Ansible, Jira, and Slack for seamless Continuous Integration (CI). My dedication to maintaining robust and reliable systems led me to implement redundancy at both the server and application project levels, significantly enhancing system resilience.My cloud management capabilities were put to the test as I effectively managed various cloud platforms, including Azure, AWS, Rackspace, Docker, and Heroku. This experience solidified my expertise in cloud architecture and operations.Key technologies that I employed during this period included Ansible, AWS, Zabbix, Xen, Nginx, Apache, PHP, Memcached, Node.js, Jenkins, Bamboo, Jira, Confluence, IIS, Windows Azure, MSSQL, MySQL, and PostgreSQL. Show less

Remote Senior System Administrator at FL.ru, I was entrusted with the crucial responsibility of ensuring the uninterrupted operation of the site around the clock. Despite the fully remote nature of this role, I managed to maintain optimal system performance and stability.One of my key projects was migrating the entire project to new hardware servers. This task involved careful planning and execution to ensure minimal disruption to services. Furthermore, I facilitated the deployment of… Show more Remote Senior System Administrator at FL.ru, I was entrusted with the crucial responsibility of ensuring the uninterrupted operation of the site around the clock. Despite the fully remote nature of this role, I managed to maintain optimal system performance and stability.One of my key projects was migrating the entire project to new hardware servers. This task involved careful planning and execution to ensure minimal disruption to services. Furthermore, I facilitated the deployment of updates on servers, ensuring our systems were up-to-date and secure.To improve storage and accessibility of user content, I implemented OCFS2 on fiber channel storage. I also focused on optimizing the performance of the project through caching, log analysis, and long request fetching, significantly improving our service response times.Recognizing the importance of proactive system monitoring, I installed and configured Zabbix, complete with autoscripts and SMS alerts. This ensured swift response to any potential system issues, thus maintaining our commitment to providing reliable services.The technologies I used during this time were PHP, Yii, PostgreSQL, KVM, Monit, Zabbix, Nginx, Git, Greenhopper, Redmine, Memcached, and HAProxy. Show less

My technical prowess was crucial in debugging Java applications (JVM, Tomcat, ActiveMQ, jVoiceBridge, etc.). Furthermore, I spearheaded the implementation of a Jenkins-based deployment process across all projects, significantly enhancing our Continuous Integration (CI) capabilities.I also established a CI pipeline for Android/OSX, enhancing our software delivery process for these platforms.The technologies I used extensively in this role included Java, jVoiceBridge, Redmine… Show more My technical prowess was crucial in debugging Java applications (JVM, Tomcat, ActiveMQ, jVoiceBridge, etc.). Furthermore, I spearheaded the implementation of a Jenkins-based deployment process across all projects, significantly enhancing our Continuous Integration (CI) capabilities.I also established a CI pipeline for Android/OSX, enhancing our software delivery process for these platforms.The technologies I used extensively in this role included Java, jVoiceBridge, Redmine, Jira, Confluence, Agile methodologies, Nagios, Tomcat, TeamCity, HAProxy, PL/Proxy, MySQL, PostgreSQL, and ActiveMQ. Show less

One of my main accomplishments was successfully negotiating with IBM for the purchase of mission-critical project equipment. I then took the lead in installing and configuring an IBM Blade Center, including 12 HS22 blades, along with DS3200 and DS3000 storage systems.Building on this hardware foundation, I created a comprehensive system cluster that served multiple environments - Production (PROD), Development (DEV), Testing (TEST), and User Acceptance Testing (UAT). This cluster was… Show more One of my main accomplishments was successfully negotiating with IBM for the purchase of mission-critical project equipment. I then took the lead in installing and configuring an IBM Blade Center, including 12 HS22 blades, along with DS3200 and DS3000 storage systems.Building on this hardware foundation, I created a comprehensive system cluster that served multiple environments - Production (PROD), Development (DEV), Testing (TEST), and User Acceptance Testing (UAT). This cluster was equipped with an array of services and tools, including Jenkins, HAProxy, Heartbeat, OCFS2, PostgreSQL database (master-slave cluster), Tomcat cluster, JMS cluster, Nginx, Apache, and CGServer mail server.Further, I managed to set up and maintain various services essential for development, such as Artifactory, Confluence, Hudson, Jira, SVN, among others. Additionally, I established a reliable system monitoring protocol, ensuring the smooth operation and security of our systems.Technologies used during this period were Java, jVoiceBridge, Redmine, Jira, Confluence, Agile methodologies, Nagios, Tomcat, TeamCity, HAProxy, PL/Proxy, MySQL, PostgreSQL, and ActiveMQ. Show less

15 FreeBSD serversdebug and optimize Java applicationsTomcat setup, and indexing with Hibernate Lucene.(CI/CD) system, leveraging Jenkins to automate the software development process. Monitoring and proactive problem-solving were critical aspects of my roleNagios and CactiLoad testing was performed using the JMeter failover system based on PostgreSQL database replicationPL/Proxy and pgpooldesigned a distributed system based on load balancing and… Show more 15 FreeBSD serversdebug and optimize Java applicationsTomcat setup, and indexing with Hibernate Lucene.(CI/CD) system, leveraging Jenkins to automate the software development process. Monitoring and proactive problem-solving were critical aspects of my roleNagios and CactiLoad testing was performed using the JMeter failover system based on PostgreSQL database replicationPL/Proxy and pgpooldesigned a distributed system based on load balancing and HAProxy PgBouncerKey technologies I utilized during this time included Java, jVoiceBridge, Redmine, Jira, Confluence, Agile methodologies, Nagios, Tomcat, TeamCity, HAProxy, PL/Proxy, MySQL, PostgreSQL, and ActiveMQ. Show less

In a key role at Renaissance Life, I facilitated system administration across a multi-platform environment, including Windows servers (AD, FTP, file sharing, and printers) and the Sybase Oracle database. My dedication to efficiency and stability helped keep operations running smoothly, especially in a dynamic, B2B service context.I was entrusted with the management of over 40 servers in remote offices, where my expertise in distributed monitoring and server management ensured seamless… Show more In a key role at Renaissance Life, I facilitated system administration across a multi-platform environment, including Windows servers (AD, FTP, file sharing, and printers) and the Sybase Oracle database. My dedication to efficiency and stability helped keep operations running smoothly, especially in a dynamic, B2B service context.I was entrusted with the management of over 40 servers in remote offices, where my expertise in distributed monitoring and server management ensured seamless integration and consistent performance across all locations. Serving over 200 users, I was their primary point of contact for technical assistance, embodying my commitment to customer satisfaction. Show less