'The studies at the university of social science or the technical college include an internship of practical work experience in the field.

He or she is a social worker with a specialism in problems affecting children or young people.

De:'Der Studium ander Fachhochschule beinhaltet ein Praktikum in demselben Gebiet.'

Sie oder er ist ein Sozialbetreuer mit einer Spezialisierung auf Probleme von kindern oder Jugendllichen.

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Note added at 1 day 21 hrs (2021-09-09 08:04:03 GMT)
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https://en.wikipedia.org/wiki/Child_and_Youth_Care
"Child and youth care is a profession which focuses on the developmental needs of children and families within the space and time of their daily lives. Child and youth care is primarily a way of working with others and practitioners can be found in a variety of roles including direct care, private practice, educator, trainer, writer, supervisor, manager, researcher and more. There are strong connections around the world between child and youth care and Social Pedagogy."

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Note added at 1 day 21 hrs (2021-09-09 08:07:25 GMT)
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https://www.iriss.org.uk/resources/insights/social-pedagogy-...
"Social pedagogy is an academic and professional discipline, which seeks to effect individual and social change through broadly educational means."