Sysadmin/DevOps Engineer (*nix)

Hello! We are looking for a responsible and professional sysadmin to work with our Linux servers in our small but stable company (more than 15 years on the market).

What we have:

Dedicated web server with containers for each project/service

Database machine

2 backup servers

Stack - Ubuntu, Solr, Elasticsearch, Docker, DNS, Sendmail, Nginx, zabbix, redis, php, sql, dns

Tasks and responsibilities:

Maintain and update existing software

Maintain and develop fault protection for all services (there is a plan to move to a new cluster architecture)

Support and keeping up to date of mail server settings to improve servers' reputation and keep mailings on whitelists (>300K emails per month)

Periodically raise new containers and update existing ones

Be available 24/7 in case of emergencies

Required experience:

5+ years of experience in administering servers with a similar stack and its cluster versions

Experience in architecting of high-load server systems and data protection

Experience in DDoS attacks blockerage

Experience  with CDNs

A big plus will be existing experience  with Proxmox or similar solutions