Software Library & Framework Skills in Hertfordshire

Description	Rank 6 Months to 23 Nov 2025	Rank YoY Change	Median Salary	Median Salary YoY Change	Historical Absolute & Relative Jobs Vacancies	Live Jobs
CSS	51	-9	£55,000	-2.22%	41 3.31%	16
HTML	55	-23	£55,000	+10.00%	37 2.99%	17
XML	69	+25	£55,000	-	23 1.86%	6
JSON	69	+27	£55,000	-13.72%	23 1.86%	5
.NET	73	-35	£52,500	-25.00%	19 1.54%	21
React	84	-31	£51,250	-6.81%	8 0.65%	5
LDAP	86	-2	£66,750	+4.70%	6 0.49%	2
Vue	86	-11	£42,500	-22.72%	6 0.49%	2
AngularJS	88	-22	£80,000	+45.45%	4 0.32%	10
SignalR	88	-	£42,500	-	4 0.32%
Node.js	88	-19	£80,000	+77.77%	4 0.32%	11
Middleware	88	-	£66,250	-	4 0.32%	10
SAP Basis	88	-	£75,000	-	4 0.32%
jQuery	88	-10	£42,500	-43.33%	4 0.32%	1
SOAP	89	+4	£67,500	+8.00%	3 0.24%	5
ASP.NET	89	-5	£60,000	-11.11%	3 0.24%	12
REST	89	-13	£67,500	-10.00%	3 0.24%	11
.NET Core	89	0	£60,000	-	3 0.24%	14
TensorFlow	89	-	£47,500	-	3 0.24%	1
PyTorch	89	-	£47,500	-	3 0.24%	1
Playwright	89	-	£75,000	-	3 0.24%
Hugging Face	89	-	£100,000	-	3 0.24%
SAP PI	89	+8	-	-	3 0.24%
Nuxt	90	-	£100,000	-	2 0.16%
Vulkan	90	-	£40,000	-	2 0.16%	1
Kafka	90	+6	£100,000	+29.03%	2 0.16%	1
RabbitMQ	90	+10	£100,000	+21.21%	2 0.16%
Entity Framework	90	-18	£60,000	-25.00%	2 0.16%	8
.NET Framework	90	-14	£60,000	-27.27%	2 0.16%	6
EDI	90	+6	-	-	2 0.16%	3
OpenGL	90	-	£40,000	-	2 0.16%	1
Web Services	90	+5	£50,000	-4.76%	2 0.16%	8
XMPP	91	-	£55,000	-	1 0.081%
MDX	91	-	£60,000	-	1 0.081%
WPF	91	+4	£57,500	-	1 0.081%	2
Oracle Fusion	91	+8	£70,000	+5.66%	1 0.081%	8
NumPy	91	-	-	-	1 0.081%
Matplotlib	91	-	-	-	1 0.081%
scikit-learn	91	-	-	-	1 0.081%
SAP Fiori	91	+8	£75,000	+15.38%	1 0.081%	3
Pandas	91	-	-	-	1 0.081%
Keras	91	-	-	-	1 0.081%
Seaborn	91	-	-	-	1 0.081%
PySpark	91	-	£65,000	-	1 0.081%	1
LangChain	91	-	£47,500	-	1 0.081%