Junior Software Engineer, 6 months in Helsingborg remote allowed

Background

This is a role that primarily requires the following skills:
Java, Spring boot, GCP

The candidate will be responsible for implementing a tool to replace legacy third-party software. This tool is a rule-driven, process-oriented system that calculates pension plans for employees.

The candidate will work closely with the product owner and business representatives to understand data inputs, convert them to Java logic, and host the tool on GCP in a cost-effective manner.

The scope of this role includes:
Being an integral part of the team for developing code that modernizes the application.

Which 3 skills from the list above are most important?
Java
Spring boot
GCP