Network Engineers transitioning to DevOps should focus on programming languages like Python and automation tools such as Ansible, Terraform, and Puppet. These tools are widely used in DevOps for infrastructure automation, configuration management, and scripting, which are crucial skills in the field.
If you are interested in getting into this field, then check out this video about Vyshak and how he shifted his career from a Networking Engineer to a Senior DevOps Engineer just after completing Intellipaat's Advanced Certification in DevOps and Cloud Computing.