HolidayCheck AG Tech Stack

German-speaking travel booking platform with hotel reviews and tour operator integrations

Travel Arrangements Bottighofen 201–500 employees Founded 2003 Public Company

HolidayCheck operates a travel marketplace built on 12M+ hotel reviews, a native OTA, and integrations with 66 tour operators across the DACH region. The tech stack is Java/PostgreSQL/MongoDB with Kafka/RabbitMQ for async processing and Kubernetes orchestration—a mature, polyglot backend powering booking and review workflows. Active projects reveal dual scaling pressures: capacity planning tooling, partner integration plumbing, and influencer/creator partnerships for user acquisition, while pain-point data shows acute friction in forecast accuracy, retention, and app reach—suggesting the marketplace faces headwinds in repeat bookings and discoverability despite strong review volume.

Tech Stack 43 technologies

Core StackJava PostgreSQL MongoDB Kafka RabbitMQ Docker Kubernetes Jenkins GitHub Actions Scala Prometheus Grafana OpenTelemetry Linux Mixpanel Firebase Figma Canva Adobe Creative Cloud Google Ads React JavaScript Micronaut Quarkus Windows macOS Apple Search Ads Git HTML CSS+13 more

What HolidayCheck AG Is Building

◆Challenges

Improving forecast accuracy
Optimizing resource utilization
Ensuring service level compliance
Low user retention
Low app reach
Scaling reliably and sustainably
Capacity planning and hiring
Improving development processes
Process efficiency improvement
Development offerings optimization

▲Active Projects

New tools and processes for capacity planning
Scalable partner integrations into our internal travel tech platform
App store optimization
Retention campaigns
Personalization of content
Annual general meeting in munich
Performance-oriented influencer marketing strategy
Creator onboarding and partnership development
Linkedin content strategy
Advertising solutions at the intersection of travel and ad tech

Hiring Activity

Decelerating20 roles · 5 in 30d

Department

Engineering

Marketing

Product

Finance

Support

Seniority

Intern

Manager

Senior

Mid

Junior

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About HolidayCheck AG

HolidayCheck AG is a public, Swiss-headquartered travel marketplace serving leisure travelers in German-speaking markets (primarily Germany, Austria, Switzerland). The core product combines a user-generated review platform (4.9M+ forum members, 12M+ hotel ratings), a direct booking OTA, and a white-label aggregation layer for tour operators and rental-car partners. The company received a "Good" overall rating in the 2024 Stiftung Warentest OTA benchmark, with top marks for booking and cancellation flows. Operational footprint spans 201–500 employees across engineering, product, marketing, and partnerships, with active hiring in Germany, Poland, and Switzerland.

HeadquartersBottighofen

Company Size201–500 employees

Founded2003

Hiring MarketsGermany, Poland, Switzerland

Frequently Asked Questions

What tech stack does HolidayCheck use?

Java, PostgreSQL, MongoDB, Micronaut, Quarkus for backend services; Kafka and RabbitMQ for event streams; Kubernetes and Docker for orchestration; React for frontend; Prometheus and Grafana for observability.