Contract Software Library & Framework Statistics in West London

Description	Rank 6 Months to 11 Apr 2026	Rank YoY Change	Median Daily Rate	Median Daily Rate YoY Change	Historical Absolute & Relative Jobs Vacancies	Live Jobs
Playwright	24	-	£375	-	25 7.51%	1
Node.js	26	-5	£550	+35.13%	23 6.91%	1
Kafka	27	-2	£603	+6.63%	22 6.61%	6
Vitest	28	-	-	-	21 6.31%
GraphQL	28	-10	-	-	21 6.31%
Great Expectations	32	-	£603	-	17 5.11%
YAML	36	-10	-	-	13 3.90%
SAP TM	38	-	£708	-	11 3.30%
OpenTelemetry	38	-	-	-	11 3.30%
Pandas	40	-	£511	-	9 2.70%	7
PySpark	41	-13	£625	-19.35%	8 2.40%	1
NumPy	43	-	£500	-	6 1.80%	7
REST	43	-21	£375	-32.31%	6 1.80%	2
Middleware	43	-15	£625	+52.81%	6 1.80%
scikit-learn	43	-	£500	-	6 1.80%	7
Seaborn	44	-	£475	-	5 1.50%	1
RESTful	45	-23	£550	+34.47%	4 1.20%	4
.NET	46	-21	£400	-27.53%	3 0.90%	9
SOAP	46	-18	-	-	3 0.90%	1
Web Services	46	-23	-	-	3 0.90%	1
XML	46	-20	-	-	3 0.90%	1
JSON	46	-19	-	-	3 0.90%	1
Next.js	46	-22	£523	-16.40%	3 0.90%	1
SAP Fiori	47	-19	-	-	2 0.60%
TensorFlow	47	-	£850	-	2 0.60%	5
CSS	47	-21	-	-	2 0.60%	7
iOS SDK	47	-	-	-	2 0.60%
Gherkin	47	-	-	-	2 0.60%
Tailwind CSS	47	-	-	-	2 0.60%	2
PyTorch	47	-	£850	-	2 0.60%	5
FastAPI	47	-	-	-	2 0.60%	1
pytest	47	-	-	-	2 0.60%
Spring Boot	47	-	£475	-	2 0.60%	2
Lambda Expressions	48	-23	£650	-	1 0.30%
HTML	48	-	£413	-	1 0.30%	7
J2EE	48	-	£650	-	1 0.30%
.NET Framework	48	-23	£400	-27.53%	1 0.30%	1
Spring WebFlux	48	-	£300	-	1 0.30%
Oracle Fusion	48	-21	£900	+63.63%	1 0.30%	1
React	48	-31	£523	+27.75%	1 0.30%	6
Spring	48	-	£300	-	1 0.30%	1