Required skills:
Good knowledge on Linux;  
Experience of CI/CD (Jenkin, Chef, Puppet, SaltStack etc); 
Experience on Cloud Servers (AWS, Google Cloud etc) 
Strong experience with SQL and RDBMS (MySQL, PostgreSQL etc); 
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Good to have:
Experience with performance tuning, monitoring and databases.; 
Experience on Docker; 
Experience on Logging tool such as Sensu, Kibana, Elasticsearch;  
Experience on scripting language (Bash, PHP, etc.);