KAYAK tech stack
KAYAK builds mostly with Java, SQL, Python, JavaScript. Its stack also includes Kubernetes, MySQL, ElasticSearch, Spring Framework. Java is named in 22 of the 55 job postings KAYAK published in the last 12 months (40%). Counted by Alion from the job postings of KAYAK, updated Sep 29, 2026.
What programming languages does KAYAK use?
Java is named in 40% of job postings at KAYAK, followed by SQL (31%), Python (20%), JavaScript (9%).
Java
22 40%
SQL
17 31%
Python
11 20%
JavaScript
5 9%
TypeScript
3 5%
Bash
1 2%
Kotlin
1 2%
Less
1 2%
Show all (9)
What frameworks and libraries does KAYAK use?
Spring Framework is named in 15% of job postings at KAYAK, followed by Spring Boot (7%), React.js (5%), Flink (5%).
Spring Framework
8 15%
Spring Boot
4 7%
React.js
3 5%
Flink
3 5%
JQuery
2 4%
Django
2 4%
Flask
2 4%
Jetpack Compose
1 2%
Show all (10)
What databases does KAYAK use?
MySQL is named in 18% of job postings at KAYAK, followed by ElasticSearch (15%), PostgreSQL (9%), Redis (7%).
MySQL
10 18%
ElasticSearch
8 15%
PostgreSQL
5 9%
Redis
4 7%
Trino
3 5%
Amazon Redshift
2 4%
Vertica
2 4%
What cloud and platforms does KAYAK use?
Kubernetes is named in 22% of job postings at KAYAK, followed by GitHub (13%), Linux (9%), Datadog (7%).
Kubernetes
12 22%
GitHub
7 13%
Datadog
4 7%
Grafana
4 7%
Apache Kafka
4 7%
AWS
3 5%
Azure
3 5%
Show all (23)
What developer tools does KAYAK use?
Docker is named in 13% of job postings at KAYAK, followed by Prometheus (9%), Git (7%), Claude Code (5%).
Docker
7 13%
Prometheus
5 9%
Git
4 7%
Claude Code
3 5%
Ansible
2 4%
Terraform
2 4%
Chef
1 2%
Cursor
1 2%
Show all (11)
What AI and ML technologies does KAYAK use?
Claude is named in 5% of job postings at KAYAK, followed by LLM (5%).
Which engineering practices does KAYAK ask for?
CI/CD is named in 44% of job postings at KAYAK, followed by Machine Learning (24%), A/B Testing (9%), Feature Store (5%).
CI/CD
24 44%
Platform Engineering
3 5%
SLI/SLO/SLA
2 4%
Show all (15)
What does each KAYAK team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
21 postingsLeadership
10 postingsAI/ML
3 postingsHow does your stack fit KAYAK?
How much does KAYAK pay by technology?
Median stated pay of the postings that name each technology, against the median of all KAYAK postings with stated pay: $109k across 38 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Java | 20 | $92k | −15% |
| SQL | 13 | $110k | +1% |
| MySQL | 9 | $110k | +1% |
| ElasticSearch | 8 | $91k | −16% |
| Spring Framework | 8 | $91k | −16% |
| Kubernetes | 7 | $105k | −3% |
| Python | 6 | $115k | +6% |
| GitHub | 5 | $235k | +116% |
| JavaScript | 5 | $105k | −3% |
How is the KAYAK stack changing?
Read from the dates of the postings themselves: a technology is new when the first posting that names it appeared in the last six months, rising or falling when its share of postings moved between the last two quarters.
How modern is the KAYAK stack?
KAYAK scores 81 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 2; legacy ones: 0.
How common is the KAYAK stack in its industry?
Share of the 263 companies in the same industries, whose stack Alion knows, that use each technology.
What sets KAYAK apart
Companies with a stack like KAYAK
Questions about the KAYAK tech stack
What programming languages does KAYAK use?
The languages named in KAYAK job postings are Java (40%), SQL (31%), Python (20%), JavaScript (9%), TypeScript (5%), as a share of the 55 postings of the last 12 months.
Does KAYAK use Spring Framework?
Yes. Spring Framework is named in 8 of 55 job postings (15%) and required in 8 of them.
What cloud and platforms does KAYAK use?
The cloud and platforms named in KAYAK job postings are Kubernetes (12), GitHub (7), Linux (5) (postings in brackets).
What skills do you need for a Backend job at KAYAK?
Backend postings at KAYAK most often require Java (19), MySQL (8), Spring Framework (8), SQL (7), out of 21 postings in the last 12 months.
Is the KAYAK tech stack changing?
Yes. SLI/SLO/SLA, Power BI, Tableau, Figma first appeared in KAYAK job postings in the last six months.
How modern is the KAYAK tech stack?
KAYAK scores 81 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 2; legacy ones: 0.
How does Alion know the KAYAK tech stack?
Alion reads every job posting KAYAK publishes and tags the technologies each one names. The figures on this page count the 55 postings of the last 12 months and were updated on Sep 29, 2026.
Method and citation
Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count
Alion, "KAYAK tech stack: 77 technologies from 55 job postings", as of Sep 29, 2026. https://alion.io/company/kayak/technologies