Daniel Krastev Email & Phone Number

Plovdiv

• Developing Kubernetes cluster installer for bare-metal deployments• Setting up physical servers for the production environment inside a data centre on the Isle of Man• Setting up dedicated servers for testing and staging infrastructure• Maintaining on-premise and offsite backups of virtual machines, databases and Ceph storage clusters• Maintaining microservice environments with the backend development team• Setting up Mesh-VPN development network between cloud-based VPS• Setting up workstations for development, operations and QA teams• Maintaining VPN endpoints and security for the company's employees and third-party partners using Wireguard, OpenVPN and OpenLDAP• Developing custom CI/CD integration between GitLab EE and Kube API• Deployment of performance and log monitoring using Zabbix, Grafana, Prometheus, Loki and Promtail• Setting up error tracking systems such as Sentry and GlitchTip

Plovdiv, Bulgaria

• Migrating the development infrastructure between various virtualization solutions• Supporting applications hosted on the company's network for various customers, including production, staging and development environments• Maintaining applications used by the development and QA teams such as GitLab CE and Redmine• Setting up GitLab CI/CD using custom integration with Kubernetes API hosted on a cloud provider• Providing support with CI using Jenkins or custom deployment scripts• Executing processes on the customer's server infrastructure regarding specific requests for maintenance or deployment• Setting up monitoring using Zabbix• DNS hosting with BIND• Maintaining automated backups over FTP

Plovdiv, Bulgaria

• Providing functional testing of Web, iOS and Android applications

Plovdiv, Bulgaria

• Consulting customers about their IT infrastructure and operations• Building and maintaining SOHO computer networks• Assembling and supporting Windows workstations and maintaining regular backups using Acronis True Image• Assembling and running servers with Debian Linux and Proxmox running various services such as: - Samba-based fileservers - OpenVPN endpoints - Web/Mail shared hosting using ISPConfig with Apache, Postfix, Amavis, Dovecot, MySQL - Windows Server 2003 and 2008 as application/database hosts for accounting software - Incremental backups with rdiff-backup and rsync• Remote monitoring using Zabbix• DNS records hosting using BIND and PowerDNS• Setting up a lab network using two ISPs with BGP routers supporting failover• Developing a control panel which extends the Proxmox API using Python Flask and SQLAlchemy

Plovdiv

• Providing around-the-clock support for the company's on-premise data centre including log analysis and reporting, real-time monitoring using Nagios and Cacti for the network and computing load and reporting service outages• Maintaining storage drive arrays• Setting up bare-metal servers with Debian Linux and Plesk providing qMail, SpamAssassin, Courier-IMAP, Apache and MySQL• Setting up a multi-server system using Varnish, Pound, DRDB and database replication• Supporting the company's in-house CMS system while actively communicating with the development team and providing a second line of support for the company's hosted customers• Setting up and supporting workstations for the Development and QA teams• Researching and testing software for improving the data centre operations such as virtualization, storage and backup solutions

Plovdiv

• Providing first-line technical support via a ticketing system for the web and mail-hosting customers• Investigating issues and consulting the customers about their hosted applications such as WordPress and Joomla• Configuring customer's accounts with cPanel and WHM• Migrating applications from third-party hosting services