What is the relationship between Jira and Atlassian in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Our engineers use Ruby on Rails, and the team as a whole works with several tools, such as Salesforce to track leads, Amazon S3 for IT storage, Atlassian Jira and Confluence for tracking and documenting progress, and Act-On, Nickelled, SEO Monitor and Google Analytics for marketing.

Answer: developer