The table below looks at the statistics for X.21 skills in IT jobs advertised across the UK. Included is a guide to the salaries offered in IT jobs that have cited X.21 over the 3 months to 24 July 2016 with a comparison to the same period over the previous 2 years.

3 months to
24 Jul 2016
Same period 2015 Same period 2014
X.21
Rank 927 - 980
Rank change year-on-year
- 0
Permanent jobs citing X.21 4 0 7
As % of all permanent IT jobs located in the UK 0.004% - 0.006%
As % of the Communications & Networking category 0.024% - 0.034%
Number of salaries quoted 1 0 7
Median salary £50,000 - £29,000
UK excluding London median salary £50,000 - £29,000

The following table is for comparison with the above and provides statistics for the entire Communications & Networking category in permanent jobs advertised across the UK.

Communications & Networking Category
UK
Permanent IT job ads with a match in the
Communications & Networking category
16619 18727 20342
As % of all permanent IT jobs located in the UK 16.95% 16.98% 17.65%
Number of salaries quoted 13833 15361 16237
Median salary £45,000 £45,000 £45,000
90% offered a salary of more than £27,500 £27,000 £27,000
10% offered a salary of more than £67,500 £65,000 £70,000
UK excluding London median salary £42,500 £41,000 £40,000
% change year-on-year
+3.65% +2.50%

X.21
Jobs Demand Trend

The demand trend of job ads citing X.21 as a proportion of all IT jobs with a match in the Communications & Networking category.

X.21 Jobs Demand Trend in the UK

X.21
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing X.21 within the UK.

X.21 Salary Trend in the UK

X.21
Top 5 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing X.21 within the UK over the 3 months to 24 July 2016. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location
(Click see detailed
statistics and trends)
Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
South East - 4 £50,000 -
England - 4 £50,000 -
Reading - 3 - -
Berkshire - 3 - -
Hampshire - 1 £50,000 -

X.21
Top 30 Related IT Skills

For the 6 months to 24 July 2016, IT jobs citing X.21 also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads with a requirement for X.21.

1 9 (81.82%) BGP
2 8 (72.73%) WAN
3 7 (63.64%) Cisco
3 7 (63.64%) Firewall
4 6 (54.55%) IPsec
4 6 (54.55%) Cisco Certification
4 6 (54.55%) MPLS
4 6 (54.55%) OSPF
5 5 (45.45%) DSL
5 5 (45.45%) Juniper
5 5 (45.45%) VPN
5 5 (45.45%) Ethernet
5 5 (45.45%) PPP
5 5 (45.45%) SNMP
5 5 (45.45%) SC Cleared
5 5 (45.45%) Security Cleared
6 4 (36.36%) JNCIA
6 4 (36.36%) Change Management
6 4 (36.36%) ITIL
6 4 (36.36%) LAN
6 4 (36.36%) PBX
6 4 (36.36%) L2TP
6 4 (36.36%) CCNA
6 4 (36.36%) Network Management
6 4 (36.36%) xDSL
6 4 (36.36%) Structured Cabling
7 3 (27.27%) ITSM
8 2 (18.18%) DNS
8 2 (18.18%) CCNP
8 2 (18.18%) Data Centre

X.21
Top Related IT Skills by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Cloud Services
1 1 (9.09%) Amazon S3
Communications & Networking
1 9 (81.82%) BGP
2 8 (72.73%) WAN
3 7 (63.64%) Firewall
4 6 (54.55%) IPsec
4 6 (54.55%) MPLS
4 6 (54.55%) OSPF
5 5 (45.45%) DSL
5 5 (45.45%) Ethernet
5 5 (45.45%) PPP
5 5 (45.45%) SNMP
5 5 (45.45%) VPN
6 4 (36.36%) L2TP
6 4 (36.36%) LAN
6 4 (36.36%) PBX
6 4 (36.36%) Structured Cabling
6 4 (36.36%) xDSL
7 2 (18.18%) DNS
8 1 (9.09%) BGP-4
8 1 (9.09%) Internet
8 1 (9.09%) SONET
General
1 1 (9.09%) Billing
1 1 (9.09%) Legal
1 1 (9.09%) Telecoms
Job Titles
1 6 (54.55%) Network Engineer
2 3 (27.27%) Network Operations Engineer
2 3 (27.27%) Operations Engineer
3 2 (18.18%) Cisco Engineer
3 2 (18.18%) Designer
3 2 (18.18%) Network Designer
3 2 (18.18%) Senior Network Engineer
4 1 (9.09%) 2nd Line Engineer
4 1 (9.09%) Cisco Network Engineer
4 1 (9.09%) Cloud Specialist
4 1 (9.09%) Firewall Engineer
4 1 (9.09%) Juniper Engineer
4 1 (9.09%) SC Cleared Network Engineer
4 1 (9.09%) Storage Specialist
4 1 (9.09%) Support Engineer
4 1 (9.09%) Technical Engineer
4 1 (9.09%) Technical Support
4 1 (9.09%) Technical Support Engineer
Libraries, Frameworks & Software Standards
1 1 (9.09%) REST
Miscellaneous
1 2 (18.18%) Data Centre
2 1 (9.09%) EMC VNX
2 1 (9.09%) Replication
2 1 (9.09%) VCE vBlock
Operating Systems
1 1 (9.09%) Unix
1 1 (9.09%) VMS
Processes & Methodologies
1 4 (36.36%) Change Management
1 4 (36.36%) ITIL
1 4 (36.36%) Network Management
2 3 (27.27%) ITSM
3 1 (9.09%) Disaster Recovery
3 1 (9.09%) Facilities Management
3 1 (9.09%) Line Management
3 1 (9.09%) Migration
3 1 (9.09%) Network Monitoring
3 1 (9.09%) Performance Monitoring
3 1 (9.09%) Performance Tuning
3 1 (9.09%) Project Management
3 1 (9.09%) Service Delivery
Programming Languages
1 1 (9.09%) SQL
Qualifications
1 6 (54.55%) Cisco Certification
2 5 (45.45%) SC Cleared
2 5 (45.45%) Security Cleared
3 4 (36.36%) CCNA
3 4 (36.36%) JNCIA
4 2 (18.18%) CCNP
5 1 (9.09%) CCDP
System Software
1 1 (9.09%) Firmware
1 1 (9.09%) NFS
1 1 (9.09%) VMware ESX
1 1 (9.09%) VMware Infrastructure
1 1 (9.09%) vSphere
Vendors
1 7 (63.64%) Cisco
2 5 (45.45%) Juniper
3 1 (9.09%) Brocade
3 1 (9.09%) EMC
3 1 (9.09%) Isilon
3 1 (9.09%) Oracle
3 1 (9.09%) VMware