Contract Software Library & Framework Statistics in West London

Description	Rank 6 Months to 9 Apr 2026	Rank YoY Change	Median Daily Rate	Median Daily Rate YoY Change	Historical Absolute & Relative Jobs Vacancies	Live Jobs
Playwright	30	-	£375	-	25 7.53%	1
Node.js	32	-11	£550	+35.13%	23 6.93%	1
Kafka	33	-8	£603	+6.63%	22 6.63%	6
Vitest	34	-	-	-	21 6.33%
GraphQL	34	-16	-	-	21 6.33%
Great Expectations	38	-	£603	-	17 5.12%
YAML	42	-16	-	-	13 3.92%
SAP TM	44	-	£708	-	11 3.31%
OpenTelemetry	44	-	-	-	11 3.31%
Pandas	46	-	£511	-	9 2.71%	7
PySpark	47	-19	£625	-19.35%	8 2.41%	1
NumPy	49	-	£500	-	6 1.81%	7
REST	49	-27	£375	-32.31%	6 1.81%	2
Middleware	49	-21	£625	+52.81%	6 1.81%
scikit-learn	49	-	£500	-	6 1.81%	7
Seaborn	50	-	£475	-	5 1.51%	1
RESTful	51	-29	£550	+34.47%	4 1.20%	4
SOAP	52	-24	-	-	3 0.90%	1
Web Services	52	-29	-	-	3 0.90%	1
XML	52	-27	-	-	3 0.90%	1
JSON	52	-26	-	-	3 0.90%	1
Next.js	52	-28	£523	-16.40%	3 0.90%	1
SAP Fiori	53	-25	-	-	2 0.60%
TensorFlow	53	-	£850	-	2 0.60%	5
.NET	53	-28	£400	-27.53%	2 0.60%	9
CSS	53	-27	-	-	2 0.60%	7
iOS SDK	53	-	-	-	2 0.60%
Gherkin	53	-	-	-	2 0.60%
Tailwind CSS	53	-	-	-	2 0.60%	2
PyTorch	53	-	£850	-	2 0.60%	5
FastAPI	53	-	-	-	2 0.60%	1
pytest	53	-	-	-	2 0.60%
Spring Boot	53	-	£475	-	2 0.60%	2
HTML	54	-26	£413	-29.60%	1 0.30%	7
J2EE	54	-	£650	-	1 0.30%
Lambda Expressions	54	-29	£650	-	1 0.30%
.NET Framework	54	-29	£400	-27.53%	1 0.30%	1
Spring WebFlux	54	-	£300	-	1 0.30%
Oracle Fusion	54	-27	£900	+63.63%	1 0.30%	1
React	54	-37	£523	+27.75%	1 0.30%	6
Spring	54	-	£300	-	1 0.30%	1