X.21 Contracts

X.21
UK

The table below provides summary statistics for contract job vacancies requiring X.21 skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited X.21 over the 6 months leading up to 30 April 2025, comparing them to the same period in the previous two years.

6 months to
30 Apr 2025
Same period 2024 Same period 2023
Rank 517 - -
Rank change year-on-year - - -
Contract jobs citing X.21 2 0 0
As % of all contract jobs advertised in the UK 0.007% - -
As % of the Communications & Networking category 0.053% - -
Number of daily rates quoted 1 0 0
Median daily rate (50th Percentile) £500 - -
UK excluding London median daily rate - - -
Number of hourly rates quoted 1 0 0
Median hourly rate £50.00 - -
UK excluding London median hourly rate - - -

All Communications and Computer Networking Skills
UK

X.21 falls under the Communications and Computer Networking category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring communications or computer networking skills.

Contract vacancies with a requirement for communications or computer networking skills 3,739 5,643 7,361
As % of all contract IT jobs advertised in the UK 12.79% 12.94% 12.33%
Number of daily rates quoted 2,297 3,382 4,789
10th Percentile £213 £205 £235
25th Percentile £363 £350 £400
Median daily rate (50th Percentile) £488 £495 £519
Median % change year-on-year -1.52% -4.53% +3.70%
75th Percentile £600 £600 £638
90th Percentile £675 £700 £725
UK excluding London median daily rate £463 £475 £475
% change year-on-year -2.63% - +8.57%
Number of hourly rates quoted 181 423 478
10th Percentile £14.20 £13.57 £9.80
25th Percentile £17.30 £17.35 £10.63
Median hourly rate £32.50 £38.50 £19.00
Median % change year-on-year -15.58% +102.63% -31.84%
75th Percentile £58.75 £62.50 £60.00
90th Percentile £75.00 £67.40 £75.00
UK excluding London median hourly rate £24.59 £45.88 £18.50
% change year-on-year -46.41% +148.00% -13.95%

X.21
Job Vacancy Trend

Job postings citing X.21 as a proportion of all IT jobs advertised.

Job vacancy trend for X.21 in the UK

X.21
Contractor Daily Rate Trend

3-month moving average daily rate quoted in jobs citing X.21.

Daily rate trend for X.21 in the UK

X.21
Contractor Hourly Rate Trend

3-month moving average hourly rates quoted in jobs citing X.21.

Hourly rate trend for X.21 in the UK

X.21
Top 3 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing X.21 within the UK over the 6 months to 30 April 2025. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Jobs
Work from Home - 1 £500 -
London - 1 - - 1
England - 1 - - 1

X.21
Co-occurring Skills and Capabilities by Category

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

Application Platforms
1 1 (50.00%) Appian
1 1 (50.00%) Blackberry Enterprise Server
1 1 (50.00%) Confluence
Communications & Networking
1 1 (50.00%) Broadband
1 1 (50.00%) ISDN
1 1 (50.00%) LAN
1 1 (50.00%) RS-232
1 1 (50.00%) TCP/IP
1 1 (50.00%) VPN
1 1 (50.00%) WAN
1 1 (50.00%) X.25
Database & Business Intelligence
1 1 (50.00%) MySQL
1 1 (50.00%) SQL Server
Development Applications
1 1 (50.00%) JIRA
General
1 1 (50.00%) German Language
Job Titles
1 1 (50.00%) Appian Developer
1 1 (50.00%) BPM Developer
1 1 (50.00%) Developer
1 1 (50.00%) Diagnostic Engineer
1 1 (50.00%) DV Cleared Network Engineer
1 1 (50.00%) Lead
1 1 (50.00%) Lead Developer
1 1 (50.00%) Network Engineer
1 1 (50.00%) Secure Network Engineer
1 1 (50.00%) SQL Developer
Libraries, Frameworks & Software Standards
1 1 (50.00%) HTML
1 1 (50.00%) JSON
1 1 (50.00%) OAuth
1 1 (50.00%) REST
1 1 (50.00%) SAML
1 1 (50.00%) SOAP
1 1 (50.00%) Web Services
1 1 (50.00%) XML
Miscellaneous
1 1 (50.00%) Mobile App
Processes & Methodologies
1 1 (50.00%) BPMN
1 1 (50.00%) Incident Management
1 1 (50.00%) Network Monitoring
1 1 (50.00%) Problem Management
1 1 (50.00%) Problem-Solving
1 1 (50.00%) User Experience
1 1 (50.00%) UX Design
Programming Languages
1 1 (50.00%) SQL
Qualifications
1 1 (50.00%) DV Cleared
1 1 (50.00%) Security Cleared
Vendors
1 1 (50.00%) CA Agile Central
1 1 (50.00%) Microsoft