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Programming Language Demand Index
Ranked by active job listings across data engineering, backend, AI and web roles. See which languages employers are hiring for right now and how demand is shifting week over week.
Languages tracked
16
Across data, backend, AI and web
Active listings
11,886
Currently indexed across all languages
Top language
Python
3,202 active listings
Data cadence
Weekly
New snapshots from active job postings
All languages — ranked by job demand
Python
The dominant language for data engineering, machine learning and scripting
Active listings
3,202
7-day trend
-553SQL
The universal language of data — querying, transforming and analysing structured data
Active listings
2,252
7-day trend
-349Java
Enterprise backend and data platform language — Spark, Kafka and Flink run on the JVM
Active listings
1,377
7-day trend
-344TypeScript
Typed superset of JavaScript used across the full stack
Active listings
1,114
7-day trend
-204JavaScript
The language of the web — frontend, backend and tooling
Active listings
959
7-day trend
-187C++
High-performance systems code — ML inference engines and embedded systems
Active listings
558
7-day trend
-54Kotlin
Modern JVM language used in Android and backend services
Active listings
428
7-day trend
+22Rust
Memory-safe systems programming — increasingly used in data tools like Polars and Delta-rs
Active listings
407
7-day trend
-14C#
.NET ecosystem for enterprise backends and cloud services
Active listings
389
7-day trend
-127Ruby
Expressive backend language — Ruby on Rails and data scripting
Active listings
310
7-day trend
+4Scala
JVM language powering Apache Spark and Kafka Streams
Active listings
229
7-day trend
-27Go
High-performance backend services, CLIs and infrastructure tooling
Active listings
221
7-day trend
-46Bash / Shell
Shell scripting for automation, CI/CD pipelines and data workflows
Active listings
181
7-day trend
-18Swift
Apple platform development — iOS, macOS and server-side Swift
Active listings
180
7-day trend
+55PHP
Server-side web development — powers a large share of the web
Active listings
75
7-day trend
-2R
Statistical computing and data visualisation — dominant in academia and research
Active listings
4
7-day trend
+1How rankings are calculated
Active job listings
Each language is matched against skills extracted from real job listings scraped daily. Only currently active listings are counted — expired roles are excluded.
7-day trend
The trend shows the change in active listings over the past seven days — the latest daily snapshot against the one from roughly a week earlier. A positive number means demand grew; negative means it fell.
Explore related intelligence
Based on active job listings across data, backend, AI and web categories · Updated weekly