Software Library & Framework Statistics in the City of Westminster

Permanent Job Market Index

Description	Rank 6 Months to 1 Jul 2026	Rank YoY Change	Median Salary	Median Salary YoY Change	Historical Absolute & Relative Jobs Vacancies	Live Jobs
gRPC	12	New entry-	-	-	7 12.73%
PyTorch	15	New entry-	£102,500	-	4 7.27%
REST	15	New entry-	£87,500	-	4 7.27%	6
Oracle Fusion	16	Up 22 places+22	£71,121	+12.66%	3 5.45%	1
React	17	Up 16 places+16	-	-	2 3.64%
Spring Boot	17	New entry-	£87,500	-	2 3.64%	1
RESTful	17	Up 17 places+17	-	-	2 3.64%
Spring	17	New entry-	£87,500	-	2 3.64%	1
XGBoost	18	New entry-	-	-	1 1.82%
Flask	18	Up 20 places+20	-	-	1 1.82%
scikit-learn	18	New entry-	-	-	1 1.82%	1
Next.js	18	New entry-	-	-	1 1.82%
Tailwind CSS	18	New entry-	-	-	1 1.82%
Android Jetpack	18	New entry-	-	-	1 1.82%
FastAPI	18	New entry-	-	-	1 1.82%
OpenTelemetry	18	New entry-	-	-	1 1.82%	1
SwiftUI	18	New entry-	-	-	1 1.82%
Elastic Stack	18	New entry-	-	-	1 1.82%
GraphQL	18	New entry-	-	-	1 1.82%
Jetpack Compose	18	New entry-	-	-	1 1.82%
UIKit	18	New entry-	-	-	1 1.82%