{"company":{"id":1038728,"name":"Holidaycheck","domain":"holidaycheck.de","url":"https://alion.io/company/holidaycheck-2"},"answer":"Holidaycheck builds mostly with Scala, JavaScript, SQL, Node JS. Its stack also includes Linux, Windows, ElasticSearch, Redis. Linux is named in 5 of the 6 job postings Holidaycheck published in the last 12 months (83%). Counted by Alion from the job postings of Holidaycheck, updated Oct 2, 2026.","window_days":365,"postings_analysed":6,"open_postings":2,"technologies_in_use":21,"modernity_score":81,"ai_adoption":false,"technologies":[{"name":"Linux","layer":"cloud","postings":5,"share":0.8333,"required":4,"open_postings":2,"first_seen":"2021-04-28","last_seen":"2026-09-16","median_stated_pay_usd":null},{"name":"Windows","layer":"cloud","postings":5,"share":0.8333,"required":4,"open_postings":2,"first_seen":"2021-04-28","last_seen":"2026-09-16","median_stated_pay_usd":null},{"name":"CI/CD","layer":"practices","postings":3,"share":0.5,"required":2,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"Scala","layer":"languages","postings":3,"share":0.5,"required":2,"open_postings":0,"first_seen":"2026-02-24","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"GitHub","layer":"cloud","postings":2,"share":0.3333,"required":2,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"JavaScript","layer":"languages","postings":2,"share":0.3333,"required":2,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"SQL","layer":"languages","postings":2,"share":0.3333,"required":2,"open_postings":0,"first_seen":"2026-02-24","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"Node JS","layer":"languages","postings":2,"share":0.3333,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"Apache Kafka","layer":"cloud","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-02-24","last_seen":"2026-02-24","median_stated_pay_usd":null},{"name":"ElasticSearch","layer":"data","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-02-24","last_seen":"2026-02-24","median_stated_pay_usd":null},{"name":"Go","layer":"languages","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"Java","layer":"languages","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"Jetpack Compose","layer":"frameworks","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"Kotlin","layer":"languages","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"Kotlin Coroutines","layer":"other","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"PHP","layer":"languages","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"Python","layer":"languages","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"Redis","layer":"data","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-02-24","last_seen":"2026-02-24","median_stated_pay_usd":null},{"name":"RxJava","layer":"frameworks","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"Swift","layer":"languages","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null},{"name":"TypeScript","layer":"languages","postings":1,"share":0.1667,"required":1,"open_postings":0,"first_seen":"2026-07-10","last_seen":"2026-07-10","median_stated_pay_usd":null}],"own_products":[],"changes":{"first_appeared":[{"name":"JavaScript","first_seen":"2026-07-10"},{"name":"Node JS","first_seen":"2026-07-10"},{"name":"CI/CD","first_seen":"2026-07-10"},{"name":"GitHub","first_seen":"2026-07-10"}],"rising":[],"falling":[],"not_seen_180d":[]},"similar_stacks":[{"name":"SMG Swiss Marketplace Group","url":"https://alion.io/company/smg-swiss-marketplace-group/technologies","shared_technologies":18},{"name":"Deltatre","url":"https://alion.io/company/deltatre/technologies","shared_technologies":18},{"name":"DNS Technologies","url":"https://alion.io/company/dns-tech/technologies","shared_technologies":19},{"name":"Visit Health","url":"https://alion.io/company/visit-health/technologies","shared_technologies":19},{"name":"Cape","url":"https://alion.io/company/cape/technologies","shared_technologies":18},{"name":"Snapmint","url":"https://alion.io/company/snapmint/technologies","shared_technologies":18},{"name":"Cambridge Mobile Telematics","url":"https://alion.io/company/cambridge-mobile-telematics/technologies","shared_technologies":18},{"name":"Midnite","url":"https://alion.io/company/midnite/technologies","shared_technologies":17}],"html_url":"https://alion.io/company/holidaycheck-2/technologies","json_url":"https://alion.io/company/holidaycheck-2/technologies.json","license":"CC BY-SA 4.0","meta":{"source":"Alion","built_at":"2026-10-02T03:22:58Z","generated_at":"2026-10-02T14:17:28Z"}}