Hi, I am working at a AI-driven and Cloud Native company for over 2 years now as a Data Engineer. I have hands-on experience with various ETL, and Big Data tools like Apache Spark, kafka, etc.
I would suggest you run a simple spark job which will read XML data into a DataFrame and convert it into any format necessary(json, avro, parquet).
Spark is an ETL tool and is available for Java, Scala, Python.
Cheers!