Software Library & Framework Skills in Hertfordshire

Description	Rank 6 Months to 29 Nov 2025	Rank YoY Change	Median Salary	Median Salary YoY Change	Historical Absolute & Relative Jobs Vacancies	Live Jobs
CSS	49	-11	£55,000	-2.22%	39 3.00%	16
HTML	54	-24	£55,000	+10.00%	34 2.62%	17
XML	65	+29	£55,000	-	23 1.77%	4
JSON	65	+31	£55,000	-13.72%	23 1.77%	5
.NET	71	-36	£52,500	-25.00%	17 1.31%	21
React	80	-30	£51,250	-6.81%	8 0.62%	4
Vue	82	-7	£42,500	-22.72%	6 0.46%	2
.NET Core	84	+5	£80,000	+33.33%	4 0.31%	13
AngularJS	84	-19	£80,000	+45.45%	4 0.31%	9
SignalR	84	-	£42,500	-	4 0.31%
Node.js	84	-16	£80,000	+77.77%	4 0.31%	10
Middleware	84	-	£66,250	-	4 0.31%	9
SAP Basis	84	-	£75,000	-	4 0.31%
jQuery	84	-7	£42,500	-43.33%	4 0.31%	1
LDAP	84	0	£66,750	+4.70%	4 0.31%	3
SOAP	85	+8	£67,500	+8.00%	3 0.23%	4
ASP.NET	85	-1	£60,000	-11.11%	3 0.23%	12
OpenGL	85	-	£40,000	-	3 0.23%	3
SAP PI	85	+13	-	-	3 0.23%
REST	85	-9	£67,500	-10.00%	3 0.23%	9
TensorFlow	85	-	£47,500	-	3 0.23%	2
Playwright	85	-	£75,000	-	3 0.23%
Hugging Face	85	-	£100,000	-	3 0.23%
Vulkan	85	-	£40,000	-	3 0.23%	3
PyTorch	85	-	£47,500	-	3 0.23%	2
Nuxt	86	-	£100,000	-	2 0.15%
Kafka	86	+10	£100,000	+29.03%	2 0.15%
Oracle Fusion	86	+13	£70,000	+5.66%	2 0.15%	9
RabbitMQ	86	+14	£100,000	+21.21%	2 0.15%
Entity Framework	86	-14	£60,000	-25.00%	2 0.15%	8
.NET Framework	86	-10	£60,000	-27.27%	2 0.15%	6
EDI	86	+11	-	-	2 0.15%	1
Web Services	86	+9	£50,000	-4.76%	2 0.15%	8
XMPP	87	-	£55,000	-	1 0.077%
MDX	87	-	£60,000	-	1 0.077%
WPF	87	+8	£57,500	-	1 0.077%	2
NumPy	87	-	-	-	1 0.077%
Matplotlib	87	-	-	-	1 0.077%
Pandas	87	-	-	-	1 0.077%
scikit-learn	87	-	-	-	1 0.077%
SAP Fiori	87	+12	£75,000	+15.38%	1 0.077%	3
Seaborn	87	-	-	-	1 0.077%
PySpark	87	-	£65,000	-	1 0.077%	1
Keras	87	-	-	-	1 0.077%
LangChain	87	-	£47,500	-	1 0.077%