Oleksandr Lead DevOps Engineer

Projects

Systems Architect, Systems Engineer, ASBC

Responsibilities:

• Requirements analyzing.
• Infrastructure planning and implementation.
• Legacy code hell problem-solving.
• Team coordination.
• Operations;
• Support;
• Maintenance;
• ITSM(BMC REMEDY) support;
• Automatization of deployment process on GitLab CI;
• Testing (UI/API);
• Leading and mentoring the Ops Team.

Technologies: Java (Java EE, JDBC, Maven, Ant), SQL (Oracle, PostgreSQL, MySQL), Git, Jira, Confluence, Web server: Apache HTTP. Application server: GlassFish. MQSeries. Testing frameworks (Cucumber, JUnit). Build and deployment scripting. Documentation and project management tools. CI/CD, Pipelines

Systems Architect, Systems Engineer, B2B trading platform (HA infrastructure planning and implementation)

Responsibilities:

• Requirements analyzing.
• Infrastructure planning and implementation.
• Legacy code hell problem-solving.
• Team coordination.
  

Technologies: Ansible, Perl/Bash scripting, MySQL cluster, Java.

Systems Architect, Systems Engineer, Trading platform (infrastructure planning and implementation and support)

Responsibilities:

• Requirements analyzing.
• Infrastructure planning and implementation.
• Commissioning works.
• Team coordination.

Technologies: AWS, Ansible, Jenkins, Terraform.

Systems Architect, Systems Engineer, Infrastructure planning and implementation

Responsibilities:

• Requirements analyzing.
• Infrastructure planning and implementation.
• Commissioning works.
• Team coordination.

Technologies: XEN/KVM, Fuel, Openstack, Mellanox InfiniBand

DevOps Engineer, Workflow automation

Responsibilities:

• cPanel plugin for custom Private Tomcat System to integrate it with panels to simplify required actions for end users.

Technologies: PHP, JavaScript, cPanel, Apache, ModJK, Tomcat, Ansible for automation.
Role: DevOps Engineer.

DevOps Engineer, Setup HA cluster at Amazon AWS

Responsibilities:

• Plan, set up the environment and perform migration of an existing complicated application multisite
  the environment into AWS EC2 cluster with load balancer, autoscaling and AMI-separated application with shared network storage.

Technologies: AWS EC2, AWS EFS, AWS CloudWatch, AWS Autoscaling, Bitbucket, Nginx, php-fpm, Ansible, AWS user-data scripts.

Network Architect, Shared Hosting Provider (Enterprise network infrastructure planning and implementation)

Responsibilities:

• Requirements analyzing, infrastructure planning and implementation.

Technologies: Cisco switches, FreeBSD, dual home BGP, ARIN network resources

System Administrator / Expert Administrator / DevOps Engineer, Hosting company (Infrastructure and end-user support)

Responsibilities:

• Monitoring and troubleshooting for existing servers.
• Configuration of new servers.
• Data migration.
• Security audit.
• Detection and prevention of malicious activity.

Technologies: XenServer, iSCSI, Linux (CentOS 5-7), Windows Server(2k8-2k12), Ansible, Cpanel,
Parallels Plesk panel, Apache, IIS, Nginx, PHP-FPM, ColdFusion, MySQL, MS SQL, PostgreSQL, Tomcat, Config Server Firewall (CSF), Spacewalk

C Developer, Remote Support Company (Security extension development).

Responsibilities:

• PHP extension development for active security audit on shared hosting servers under the company’s service.
  

Technologies: C, make utils, PHP Zend API.

System Administrator, Lead Consultant, National education management information system (HA and high load infrastructure implementation and support)

Responsibilities:

• Planning and setting up scalable HA cluster for PHP applications with MySQL cluster backend.
• Consultations for developers for application refactoring to fit high loads and implement HA.
  

Technologies: iptables, MySQL Cluster+mysqlnd, HAproxy, CARP.

Network Architect, System Administrator, Small Internet Service and VoIP Provider (Enterprise network infrastructure planning and implementation).

Responsibilities:

• Network infrastructure implementation.
• CRM system implementation.
• Asterisk chan_sip module refactoring for RADIUS AAA.
• HA mail service.
  

Technologies: Cisco switches, Cisco AS, asterisk PBX, FreeBSD, dual home BGP, RIPE network resources, RADIUS, C, SVN, postfix, dovecot.

 .NET developer, Engineering Plant (Application development for resource planning department).

Responsibilities:

• Application development for automatic product price calculation based on Autocad blueprints.
  

Technologies: Microsoft Visual Studio, SVN, AutoCAD, AutoCAD .NET API.

Education

Kharkiv National University of Radioelectronics

Computer Science Degree