Atanas Hristozov

Automation of infrastructure installation and configuration with Ansible, Terraform HA solutions: Pacemaker/Corosync, BGP, haproxy, ProxySQL Prometheus monitoring, Grafana visualizations, Alertmanager. Packaging and distribution of prometheus exporters. Kubernetes Postgres and MySQL Percona clusters Gitlab, CI/CD Ceph PowerDNS, wireguard Setup and maintain client cluster setups with the CM4all software solutions.

Work on RedHat and Centos systems to provide customers with an intelligent mobile network Administer clustered mobile operator environments and the numerous software solutions the company provides to their customers. SCTP, M3UA, TCAP, etc Troubleshoot MySQL/MariaDB setups and telecom protocols and communication. Automating as many tasks as possible with Bash and Perl Streamlining development with Docker containers Development on internal sites of the company (mainly PHP and some Laravel) CI/CD with Jenkins

Clustered environments based on Linux (CentOS, Ubuntu, Debian) 10GigE network Juniper, Intel and Mellanox. Performance optimizations of storage controllers, CPU, OS and the network stack: performance governors, interrupt affinity isolation, NIC VFs, cgroups. Automation of tasks including cgroups, VF creation, cluster health checks, IPMI tasks and others (Bash; Perl, Python) Use of collaborative solutions (Git, Gerrit) Writing addons for Open Source project Proxmox VE to suit the needs of the company.

Installation and support of Windows and Linux work-stations and servers Software installation, configuration and support Network infrastructure implementation, support and troubleshooting with emphasis on security and isolation. Extensive Layer 2 topology with numerous VLANs, aggregated and controlled through a central control panel. Use of multi-WAN technologies. Administration of over 250 Windows and Linux based work-stations. Clustered virtual environment (orchestration: Proxmox, Storage: ZFS)

Web application oriented software development Web services Databases & web integration Maths (Algebra, geometry, statistics etc.) Software development using a multitude of programming languages Graphics Networks and security