Software Library & Framework Skills in Hertfordshire

Description	Rank 6 Months to 21 Dec 2025	Rank YoY Change	Median Salary	Median Salary YoY Change	Historical Absolute & Relative Jobs Vacancies	Live Jobs
CSS	49	-2	£55,000	-2.22%	45 2.84%	16
HTML	62	-25	£55,000	+7.31%	31 1.96%	12
XML	69	+30	£55,000	-	24 1.51%	2
JSON	69	+31	£55,000	-13.72%	24 1.51%	4
.NET	77	-35	£52,500	-19.23%	16 1.01%	18
React	85	-26	£51,250	-6.81%	8 0.50%	9
Oracle Fusion	87	+17	£53,750	-17.30%	6 0.38%	3
Vue	87	-4	£42,500	-22.72%	6 0.38%	1
.NET Core	87	+6	£92,500	+60.86%	6 0.38%	13
AngularJS	89	-15	£80,000	+60.00%	4 0.25%	4
SignalR	89	-	£42,500	-	4 0.25%
Node.js	89	-16	£80,000	+77.77%	4 0.25%	4
SAP Basis	89	-	£75,000	-	4 0.25%
jQuery	89	-8	£42,500	-43.33%	4 0.25%	1
SOAP	90	+6	£67,500	+8.00%	3 0.19%	1
LDAP	90	-2	£65,000	+1.96%	3 0.19%	13
ASP.NET	90	-1	£60,000	+4.34%	3 0.19%	10
OpenGL	90	-	£40,000	-	3 0.19%	3
REST	90	-12	£67,500	-10.00%	3 0.19%	6
TensorFlow	90	-	£47,500	-	3 0.19%	2
Vulkan	90	-	£40,000	-	3 0.19%	3
PyTorch	90	-	£47,500	-	3 0.19%	2
Hugging Face	90	-	£100,000	-	3 0.19%
Nuxt	91	-	£100,000	-	2 0.13%
PySpark	91	-	£70,000	-	2 0.13%	2
Kafka	91	+8	£100,000	+29.03%	2 0.13%	1
RabbitMQ	91	+12	£100,000	+35.59%	2 0.13%
Entity Framework	91	-15	£60,000	-25.00%	2 0.13%	4
.NET Framework	91	-10	£60,000	-27.27%	2 0.13%	1
EDI	91	+10	-	-	2 0.13%
Middleware	91	+13	£66,250	+1.92%	2 0.13%	11
Web Services	91	+7	£50,000	-9.09%	2 0.13%	1
MDX	92	-	£60,000	-	1 0.063%
WPF	92	+7	£57,500	-	1 0.063%	1
NumPy	92	-	-	-	1 0.063%	1
SAP PI	92	-	-	-	1 0.063%
Matplotlib	92	-	-	-	1 0.063%	1
Pandas	92	-	-	-	1 0.063%	1
scikit-learn	92	-	-	-	1 0.063%	1
SAP Fiori	92	+12	£75,000	-	1 0.063%	5
Seaborn	92	-	-	-	1 0.063%	1
Keras	92	-	-	-	1 0.063%
Playwright	92	-	£75,000	-	1 0.063%	1
LangChain	92	-	£47,500	-	1 0.063%