Software Library & Framework Skills in Hertfordshire

Description	Rank 6 Months to 22 Nov 2025	Rank YoY Change	Median Salary	Median Salary YoY Change	Historical Absolute & Relative Jobs Vacancies	Live Jobs
CSS	52	-9	£55,000	-2.22%	39 3.19%	18
HTML	55	-23	£55,000	+10.00%	36 2.94%	18
XML	69	+28	£55,000	-	22 1.80%	7
JSON	69	+30	£55,000	-13.72%	22 1.80%	7
.NET	72	-32	£52,500	-25.00%	19 1.55%	26
React	83	-29	£51,250	-6.81%	8 0.65%	11
LDAP	85	+2	£66,750	+4.70%	6 0.49%	2
Vue	85	-7	£42,500	-22.72%	6 0.49%	4
AngularJS	87	-19	£80,000	+45.45%	4 0.33%	13
SignalR	87	-	£42,500	-	4 0.33%
Node.js	87	-16	£80,000	+77.77%	4 0.33%	15
Middleware	87	-	£66,250	-	4 0.33%	10
SAP Basis	87	-	£75,000	-	4 0.33%
jQuery	87	-6	£42,500	-43.33%	4 0.33%	1
SOAP	88	+10	£67,500	+22.72%	3 0.25%	9
ASP.NET	88	-1	£60,000	-11.11%	3 0.25%	13
REST	88	-9	£67,500	-10.00%	3 0.25%	17
.NET Core	88	+4	£60,000	-	3 0.25%	17
TensorFlow	88	-	£47,500	-	3 0.25%	1
PyTorch	88	-	£47,500	-	3 0.25%	1
Playwright	88	-	£75,000	-	3 0.25%	1
Hugging Face	88	-	£100,000	-	3 0.25%
SAP PI	88	+12	-	-	3 0.25%
Nuxt	89	-	£100,000	-	2 0.16%
Vulkan	89	-	£40,000	-	2 0.16%	3
Kafka	89	+10	£100,000	+29.03%	2 0.16%	3
RabbitMQ	89	+14	£100,000	+21.21%	2 0.16%
Entity Framework	89	-14	£60,000	-25.00%	2 0.16%	9
.NET Framework	89	-10	£60,000	-27.27%	2 0.16%	7
EDI	89	+10	-	-	2 0.16%	4
OpenGL	89	-	£40,000	-	2 0.16%	1
Web Services	89	+9	£50,000	-4.76%	2 0.16%	9
XMPP	90	-	£55,000	-	1 0.082%
MDX	90	-	£60,000	-	1 0.082%
WPF	90	+8	£57,500	-	1 0.082%	2
Oracle Fusion	90	+12	£70,000	+5.66%	1 0.082%	8
NumPy	90	-	-	-	1 0.082%
Matplotlib	90	-	-	-	1 0.082%
scikit-learn	90	-	-	-	1 0.082%
SAP Fiori	90	+12	£75,000	+15.38%	1 0.082%	3
Pandas	90	-	-	-	1 0.082%
Keras	90	-	-	-	1 0.082%
Seaborn	90	-	-	-	1 0.082%
PySpark	90	-	£65,000	-	1 0.082%	3
LangChain	90	-	£47,500	-	1 0.082%