Software Library & Framework Skills in Hertfordshire

Description	Rank 6 Months to 1 Dec 2025	Rank YoY Change	Median Salary	Median Salary YoY Change	Historical Absolute & Relative Jobs Vacancies	Live Jobs
CSS	46	-7	£55,000	-2.22%	39 2.91%	17
HTML	50	-19	£55,000	+10.00%	34 2.54%	16
XML	60	+33	£55,000	-	24 1.79%	4
JSON	60	+35	£55,000	-13.72%	24 1.79%	6
.NET	67	-30	£52,500	-25.00%	17 1.27%	21
React	76	-26	£51,250	-6.81%	8 0.60%	7
Vue	78	-4	£42,500	-22.72%	6 0.45%	1
.NET Core	79	+10	£100,000	+66.66%	5 0.37%	13
AngularJS	80	-15	£80,000	+45.45%	4 0.30%	5
SignalR	80	-	£42,500	-	4 0.30%
Node.js	80	-14	£80,000	+77.77%	4 0.30%	9
Middleware	80	+19	£66,250	+1.92%	4 0.30%	9
SAP Basis	80	-	£75,000	-	4 0.30%
jQuery	80	-4	£42,500	-43.33%	4 0.30%	3
LDAP	80	+3	£66,750	+4.70%	4 0.30%	3
SOAP	81	+10	£67,500	+8.00%	3 0.22%	3
ASP.NET	81	+2	£60,000	-11.11%	3 0.22%	12
OpenGL	81	-	£40,000	-	3 0.22%	2
SAP PI	81	+16	-	-	3 0.22%
REST	81	-6	£67,500	-10.00%	3 0.22%	10
TensorFlow	81	-	£47,500	-	3 0.22%	2
Playwright	81	-	£75,000	-	3 0.22%
Hugging Face	81	-	£100,000	-	3 0.22%
Vulkan	81	-	£40,000	-	3 0.22%	2
PyTorch	81	-	£47,500	-	3 0.22%	2
Nuxt	82	-	£100,000	-	2 0.15%
Kafka	82	+12	£100,000	+29.03%	2 0.15%
Oracle Fusion	82	+16	£70,000	+5.66%	2 0.15%	9
RabbitMQ	82	+16	£100,000	+35.59%	2 0.15%
Entity Framework	82	-11	£60,000	-25.00%	2 0.15%	3
.NET Framework	82	-7	£60,000	-27.27%	2 0.15%	2
EDI	82	+14	-	-	2 0.15%	1
Web Services	82	+12	£50,000	-4.76%	2 0.15%	7
XMPP	83	-	£55,000	-	1 0.075%
MDX	83	-	£60,000	-	1 0.075%
WPF	83	+11	£57,500	-	1 0.075%	2
NumPy	83	-	-	-	1 0.075%
Matplotlib	83	-	-	-	1 0.075%
Pandas	83	-	-	-	1 0.075%
scikit-learn	83	-	-	-	1 0.075%
SAP Fiori	83	+15	£75,000	+15.38%	1 0.075%	3
Seaborn	83	-	-	-	1 0.075%
PySpark	83	-	£65,000	-	1 0.075%	1
Keras	83	-	-	-	1 0.075%
LangChain	83	-	£47,500	-	1 0.075%