The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for WSDL skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited WSDL over the 3 months to 28 June 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Web Services Description Language (WSDL)
London / City of London
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 164 163 199
Rank change year-on-year -1 +36  
Contract jobs citing WSDL 2 2 6
As % of all contract IT jobs advertised in the City of London 0.061% 0.059% 0.10%
As % of the Libraries, Frameworks & Software Standards category 0.16% 0.17% 0.35%
Number of daily rates quoted 0 0 6
Median daily rate - - £431
UK excluding London median daily rate £488 £475 £425
% change year-on-year +2.63% +11.76%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £40.00 - -

WSDL is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
City of London
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 1238 1183 1708
As % of all contract IT job vacancies advertised in the City of London 37.94% 35.14% 29.75%
Number of daily rates quoted 3865 4052 4838
Median daily rate £500 £450 £425
Median daily rate % change year-on-year +11.00% +5.88%  
90% offered a daily rate of more than £356 £313 £308
10% offered a daily rate of more than £638 £588 £625
UK excluding London median daily rate £390 £375 £350
% change year-on-year +4.00% +7.14%  
Number of hourly rates quoted 5 2 38
Median hourly rate £24.36 £20.00 £24.23
Median hourly rate % change year-on-year +21.80% -17.45%  
90% offered a hourly rate of more than £20.75 £19.00 £15.24
10% offered a hourly rate of more than £25.29 £21.00 £193.75
UK excluding London median hourly rate £42.50 £36.00 £40.00
% change year-on-year +18.05% -10.00%  

WSDL
Job Vacancy Trend in the City of London

Job postings citing WSDL as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for WSDL in the City of London

WSDL
Contractor Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing WSDL in the City of London.

Contractor daily rate trend for WSDL in the City of London

For the 6 months to 28 June 2017, IT contractor jobs citing WSDL also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the City of London region with a requirement for WSDL.

1 3 (100.00%) SOAP
1 3 (100.00%) Java
2 2 (66.67%) Web Services
2 2 (66.67%) XML
2 2 (66.67%) XSD
2 2 (66.67%) SOA
2 2 (66.67%) HTTP
3 1 (33.33%) SNMP
3 1 (33.33%) TCP/IP
3 1 (33.33%) XML Schema
3 1 (33.33%) SSL
3 1 (33.33%) IBM
3 1 (33.33%) Middleware
3 1 (33.33%) Telnet
3 1 (33.33%) Firewall
3 1 (33.33%) Oracle EBS
3 1 (33.33%) Finance
3 1 (33.33%) Validation
3 1 (33.33%) Oracle ADF
3 1 (33.33%) Clustering
3 1 (33.33%) Agile Software Development
3 1 (33.33%) Retail
3 1 (33.33%) Cryptography
3 1 (33.33%) SSH
3 1 (33.33%) Maven
3 1 (33.33%) PKI
3 1 (33.33%) WebSphere
3 1 (33.33%) Load Balancing
3 1 (33.33%) DataPower
3 1 (33.33%) Oracle Fusion

WSDL
Co-occurring IT Skills in the City of London 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:

Application Platforms
1 1 (33.33%) JBoss
1 1 (33.33%) Oracle SOA Suite
1 1 (33.33%) WebLogic
1 1 (33.33%) WebSphere
Business Applications
1 1 (33.33%) Oracle EBS
1 1 (33.33%) Oracle Retail
Communications & Networking
1 2 (66.67%) HTTP
2 1 (33.33%) Firewall
2 1 (33.33%) SNMP
2 1 (33.33%) SSH
2 1 (33.33%) SSL
2 1 (33.33%) TCP/IP
2 1 (33.33%) Telnet
Database & Business Intelligence
1 1 (33.33%) Oracle ODI
Development Applications
1 1 (33.33%) Maven
General
1 1 (33.33%) Finance
1 1 (33.33%) Retail
Job Titles
1 1 (33.33%) Architect
1 1 (33.33%) Consultant
1 1 (33.33%) Data Consultant
1 1 (33.33%) Developer
1 1 (33.33%) Integration Architect
1 1 (33.33%) Java Developer
1 1 (33.33%) Middleware Architect
1 1 (33.33%) Senior Architect
1 1 (33.33%) Senior Integration Architect
Libraries, Frameworks & Software Standards
1 3 (100.00%) SOAP
2 2 (66.67%) Web Services
2 2 (66.67%) XML
2 2 (66.67%) XSD
3 1 (33.33%) Middleware
3 1 (33.33%) Oracle ADF
3 1 (33.33%) Oracle Fusion
3 1 (33.33%) REST
3 1 (33.33%) WebCenter
3 1 (33.33%) XML Schema
3 1 (33.33%) XSL
3 1 (33.33%) XSLT
Miscellaneous
1 1 (33.33%) Clustering
1 1 (33.33%) DataPower
1 1 (33.33%) PKI
Processes & Methodologies
1 2 (66.67%) SOA
2 1 (33.33%) Agile Software Development
2 1 (33.33%) Cryptography
2 1 (33.33%) ERP
2 1 (33.33%) High Availability
2 1 (33.33%) Load Balancing
2 1 (33.33%) People Management
2 1 (33.33%) Validation
Programming Languages
1 3 (100.00%) Java
Vendors
1 1 (33.33%) IBM
1 1 (33.33%) Oracle