Senior Software Engineer, 6 months in Helsingborg remote allowed

Background

This is a role that requires proficiency in the following key skills:
Java, Spring Boot, and GCP (Google Cloud Platform). The candidate will be responsible for hands-on implementation of a tool that will replace a legacy third-party software. This tool utilizes rules-driven processes to calculate pension plans for all co-workers.

The candidate must work closely with the product owner and business representatives to gather a comprehensive understanding of data inputs, and then convert that information into Java code and deploy it efficiently on GCP.

The scope of the consultant services is to assist in:
Becoming an integral part of the team to develop code that will modernize the application.

Requirements:
Java
Spring Boot
GCP (Google Cloud Platform)

Which 3 skills from the listed requirements are the most important?
Java
Spring Boot
GCP (Google Cloud Platform)