How to define my job title

Hi all, I have worked for many years as a backend developer with focus on the DevOps part and occasionally did some front end as well (little). I have a master's degree in computer engineering and several academic research activities.

For the past few months I have been working in a new company where I am involved in:

• defining and developing automated end-to-end tests;
• develop and maintain internal tools useful for the developer experience;
• configure and maintain dev and test environments (releases, deployments, etc.);
• defining CI/CD pipelines to automate various processes;
• at the time of production release, I work alongside the SREs (having already deployed to the test environment, I anticipate their work).

Officially I have been framed as an “Automation Testing Engineer”, however, it seems reductive (I look like a mere tester in the eyes of future recruiters), I call myself "Software Engineer in test/DevOps Engineer" on my resume, I don't want to sound like I'm only doing testing, since I do a lot of different things

What do you think is the most appropriate title for my role?

Thank you to anyone who can give me advice.