# KAYAK - **Answer**: KAYAK builds mostly with Java, SQL, Python, JavaScript. Its stack also includes Kubernetes, Trino, GitHub, MySQL. Java is named in 31 of the 89 job postings KAYAK published in the last 12 months (35%). Counted by Alion from the job postings of KAYAK, updated Nov 14, 2026. - **Window days**: 365 - **Postings analysed**: 89 - **Open postings**: 35 - **Technologies in use**: 92 - **Modernity score**: 80 - **Ai adoption**: yes - **License**: CC BY-SA 4.0 ## Company - **Id**: 3573 - **Name**: KAYAK - **Domain**: kayak.com - **Url**: ## Technologies - **Java** — Layer: languages; Postings: 31; Share: 0.3483; Required: 31; Open postings: 13; First seen: 2026-01-12 - **CI/CD** — Layer: practices; Postings: 31; Share: 0.3483; Required: 27; Open postings: 10; First seen: 2026-05-08 - **SQL** — Layer: languages; Postings: 26; Share: 0.2921; Required: 26; Open postings: 11; First seen: 2026-05-08 - **Machine Learning** — Layer: practices; Postings: 23; Share: 0.2584; Required: 23; Open postings: 11; First seen: 2026-01-12 - **Python** — Layer: languages; Postings: 23; Share: 0.2584; Required: 20; Open postings: 9; First seen: 2026-05-08 - **Kubernetes** — Layer: cloud; Postings: 20; Share: 0.2247; Required: 17; Open postings: 7; First seen: 2026-07-01 - **Trino** — Layer: data; Postings: 13; Share: 0.1461; Required: 13; Open postings: 9; First seen: 2026-05-08 - **Docker** — Layer: tools; Postings: 13; Share: 0.1461; Required: 12; Open postings: 5; First seen: 2026-05-08 - **GitHub** — Layer: cloud; Postings: 12; Share: 0.1348; Required: 12; Open postings: 5; First seen: 2026-07-17 - **MySQL** — Layer: data; Postings: 12; Share: 0.1348; Required: 12; Open postings: 3; First seen: 2026-04-13 - **Spring Framework** — Layer: frameworks; Postings: 11; Share: 0.1236; Required: 11; Open postings: 5; First seen: 2026-06-02 - **AWS** — Layer: cloud; Postings: 9; Share: 0.1011; Required: 7; Open postings: 4; First seen: 2026-07-01 - **Apache Kafka** — Layer: cloud; Postings: 9; Share: 0.1011; Required: 6; Open postings: 5; First seen: 2026-04-13 - **ElasticSearch** — Layer: data; Postings: 9; Share: 0.1011; Required: 2; Open postings: 3; First seen: 2026-07-01 - **Linux** — Layer: cloud; Postings: 8; Share: 0.0899; Required: 8; Open postings: 2; First seen: 2026-07-01 - **PostgreSQL** — Layer: data; Postings: 8; Share: 0.0899; Required: 8; Open postings: 3; First seen: 2026-05-08 - **Prometheus** — Layer: tools; Postings: 7; Share: 0.0787; Required: 7; Open postings: 1; First seen: 2026-07-01 - **Flink** — Layer: frameworks; Postings: 7; Share: 0.0787; Required: 5; Open postings: 4; First seen: 2026-05-08 - **Git** — Layer: tools; Postings: 7; Share: 0.0787; Required: 5; Open postings: 3; First seen: 2026-04-13 - **GitHub Actions** — Layer: cloud; Postings: 7; Share: 0.0787; Required: 5; Open postings: 4; First seen: 2026-05-08 - **JavaScript** — Layer: languages; Postings: 7; Share: 0.0787; Required: 5; Open postings: 2; First seen: 2026-06-24 - **A/B Testing** — Layer: practices; Postings: 6; Share: 0.0674; Required: 6; Open postings: 2; First seen: 2026-07-10 - **Grafana** — Layer: cloud; Postings: 6; Share: 0.0674; Required: 6; Open postings: 1; First seen: 2026-07-21 - **Datadog** — Layer: cloud; Postings: 5; Share: 0.0562; Required: 5; Open postings: 0; First seen: 2026-07-01 - **Feature Store** — Layer: practices; Postings: 5; Share: 0.0562; Required: 5; Open postings: 1; First seen: 2026-07-21 - **Vertica** — Layer: data; Postings: 5; Share: 0.0562; Required: 5; Open postings: 3; First seen: 2026-05-08 - **LLM** — Layer: ai; Postings: 5; Share: 0.0562; Required: 4; Open postings: 3; First seen: 2026-06-02 - **Redis** — Layer: data; Postings: 5; Share: 0.0562; Required: 4; Open postings: 1; First seen: 2026-04-13 - **Spring Boot** — Layer: frameworks; Postings: 5; Share: 0.0562; Required: 4; Open postings: 1; First seen: 2026-07-02 - **Looker** — Layer: cloud; Postings: 5; Share: 0.0562; Required: 3; Open postings: 3; First seen: 2026-05-08 - **Superset** — Layer: cloud; Postings: 5; Share: 0.0562; Required: 3; Open postings: 3; First seen: 2026-05-08 - **Amazon Redshift** — Layer: data; Postings: 4; Share: 0.0449; Required: 4; Open postings: 2; First seen: 2026-05-08 - **Figma** — Layer: cloud; Postings: 4; Share: 0.0449; Required: 4; Open postings: 1; First seen: 2026-07-27 - **Microsoft Excel** — Layer: tools; Postings: 4; Share: 0.0449; Required: 4; Open postings: 2; First seen: 2026-08-27 - **Okta** — Layer: cloud; Postings: 4; Share: 0.0449; Required: 4; Open postings: 0; First seen: 2026-06-02 - **React.js** — Layer: frameworks; Postings: 4; Share: 0.0449; Required: 4; Open postings: 1; First seen: 2026-07-20 - **SOAP** — Layer: practices; Postings: 4; Share: 0.0449; Required: 4; Open postings: 2; First seen: 2026-06-24 - **TypeScript** — Layer: languages; Postings: 4; Share: 0.0449; Required: 4; Open postings: 1; First seen: 2026-07-20 - **Django** — Layer: frameworks; Postings: 4; Share: 0.0449; Required: 2; Open postings: 2; First seen: 2026-05-08 - **Flask** — Layer: frameworks; Postings: 4; Share: 0.0449; Required: 2; Open postings: 2; First seen: 2026-05-08 - **GCP** — Layer: cloud; Postings: 4; Share: 0.0449; Required: 2; Open postings: 1; First seen: 2026-07-01 - **AI Agents** — Layer: practices; Postings: 3; Share: 0.0337; Required: 3; Open postings: 3; First seen: 2026-11-09 - **Ansible** — Layer: tools; Postings: 3; Share: 0.0337; Required: 3; Open postings: 1; First seen: 2026-07-01 - **Arize Phoenix** — Layer: cloud; Postings: 3; Share: 0.0337; Required: 3; Open postings: 3; First seen: 2026-10-12 - **Azure** — Layer: cloud; Postings: 3; Share: 0.0337; Required: 3; Open postings: 0; First seen: 2026-06-02 - **Claude** — Layer: ai; Postings: 3; Share: 0.0337; Required: 3; Open postings: 0; First seen: 2026-07-20 - **Claude Code** — Layer: tools; Postings: 3; Share: 0.0337; Required: 3; Open postings: 0; First seen: 2026-07-20 - **Comet ML** — Layer: cloud; Postings: 3; Share: 0.0337; Required: 3; Open postings: 3; First seen: 2026-10-12 - **Platform Engineering** — Layer: practices; Postings: 3; Share: 0.0337; Required: 3; Open postings: 1; First seen: 2026-07-21 - **PyTorch** — Layer: frameworks; Postings: 3; Share: 0.0337; Required: 3; Open postings: 3; First seen: 2026-10-12 - … 42 more in the JSON form ## Changes ### First appeared - **Agentic Workflows** — First seen: 2026-11-13 - **AI Agents** — First seen: 2026-11-09 - **Arize Phoenix** — First seen: 2026-10-12 - **Comet ML** — First seen: 2026-10-12 - **PyTorch** — First seen: 2026-10-12 - **Recommender Systems** — First seen: 2026-10-12 - **SIEM** — First seen: 2026-10-02 - **Windows** — First seen: 2026-10-02 ### Rising - **Trino** — Share from: 3; Share to: 21 - **Python** — Share from: 18; Share to: 30 - **Spring Framework** — Share from: 6; Share to: 17 - **GitHub Actions** — Share from: 0; Share to: 11 - **Docker** — Share from: 9; Share to: 17 - **Apache Kafka** — Share from: 3; Share to: 11 - **PostgreSQL** — Share from: 3; Share to: 11 - **Vertica** — Share from: 0; Share to: 8 ### Falling - **GitHub** — Share from: 21; Share to: 9 - **Claude** — Share from: 9; Share to: 0 - **Claude Code** — Share from: 9; Share to: 0 - **A/B Testing** — Share from: 12; Share to: 4 - **JavaScript** — Share from: 12; Share to: 6 - **Datadog** — Share from: 9; Share to: 4 - **Spring Boot** — Share from: 9; Share to: 4 ## Similar stacks - [Omnissa](https://alion.io/company/omnissa/technologies) — Shared technologies: 69 - [GoDaddy](https://alion.io/company/go-daddy/technologies) — Shared technologies: 70 - [X5 Group](https://alion.io/company/x5/technologies) — Shared technologies: 66 - [Fever](https://alion.io/company/feverup/technologies) — Shared technologies: 69 - [GEICO](https://alion.io/company/geico-3/technologies) — Shared technologies: 73 - [HealthEdge](https://alion.io/company/healthedge/technologies) — Shared technologies: 67 - [Dellent Consulting](https://alion.io/company/dellent-consulting/technologies) — Shared technologies: 72 - [Worldline](https://alion.io/company/worldline/technologies) — Shared technologies: 67 --- [Page](https://alion.io/company/kayak/technologies) · [JSON](https://alion.io/company/kayak/technologies.json) Source: Alion (alion.io), 2026-11-14. 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