Upstream is hiring Software Engineer, Java #java #springframework #hibernate #cicd #elasticsearch #kafka #nosql #redis #sql Gerakas, Greece Full-time UpstreamJob details https://jobsfordevelopers.com/jobs/software-engineer-java-at-upstreamsystems-com-jan-26-2026-36831d?utm_source=mastodon.world&utm_medium=social&utm_campaign=posting#jobalert #jobsearch #hiring
