The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for zOS skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited zOS over the 3 months to 23 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.

IBM z/OS
London / City of London
3 months to
23 Jun 2017
Same period 2016 Same period 2015
Rank 164 160 191
Rank change year-on-year -4 +31  
Contract jobs citing zOS 2 4 10
As % of all contract IT jobs advertised in the City of London 0.061% 0.12% 0.17%
As % of the Operating Systems category 0.31% 0.55% 0.86%
Number of daily rates quoted 2 4 5
Median daily rate £433 £588 £313
Median daily rate % change year-on-year -26.38% +88.00%  
90% offered a daily rate of more than £399 £458 £252
10% offered a daily rate of more than £467 £700 £380
UK excluding London median daily rate £400 £440 £417
% change year-on-year -9.03% +5.45%  
Number of hourly rates quoted 0 0 2
Median hourly rate - - £62.50
UK excluding London median hourly rate - £35.00 £31.30
% change year-on-year - +11.82%  

zOS is in the operating system 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 operating system skills.

Contract Operating System Skills
City of London
Contract job vacancies with a requirement for operating system skills 652 731 1168
As % of all contract IT job vacancies advertised in the City of London 19.76% 21.60% 20.10%
Number of daily rates quoted 513 604 894
Median daily rate £450 £450 £400
Median daily rate % change year-on-year - +12.50%  
90% offered a daily rate of more than £213 £250 £225
10% offered a daily rate of more than £618 £600 £575
UK excluding London median daily rate £375 £363 £350
% change year-on-year +3.44% +3.57%  
Number of hourly rates quoted 18 22 53
Median hourly rate £21.25 £18.25 £20.00
Median hourly rate % change year-on-year +16.43% -8.75%  
90% offered a hourly rate of more than £14.98 £12.50 £12.35
10% offered a hourly rate of more than £175.00 £22.00 £34.30
UK excluding London median hourly rate £15.50 £16.50 £16.20
% change year-on-year -6.06% +1.85%  

zOS
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing zOS as a proportion of all contract or permanent IT jobs with a match in the Operating Systems category.

Job vacancy trend for zOS in the City of London

zOS
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 zOS in the City of London.

Contractor daily rate trend for zOS in the City of London

zOS
Contractor Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing zOS in the City of London.

Contractor hourly rate trend for zOS in the City of London

For the 6 months to 23 June 2017, IT contractor jobs citing zOS 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 zOS.

1 3 (100.00%) IBM
2 2 (66.67%) JCL
2 2 (66.67%) Middleware
2 2 (66.67%) Finance
2 2 (66.67%) Advertising
2 2 (66.67%) Stakeholder Management
2 2 (66.67%) Tandem
2 2 (66.67%) Unix
2 2 (66.67%) Windows
2 2 (66.67%) B2B
2 2 (66.67%) IBM Sterling
2 2 (66.67%) ISPF
2 2 (66.67%) iSeries
2 2 (66.67%) Time Sharing Option
3 1 (33.33%) zSecure
3 1 (33.33%) DB2
3 1 (33.33%) IBM Mainframe
3 1 (33.33%) Banking
3 1 (33.33%) Mainframe
3 1 (33.33%) CICS
3 1 (33.33%) MVS
3 1 (33.33%) RACF

zOS
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%) CICS
Database & Business Intelligence
1 1 (33.33%) DB2
General
1 2 (66.67%) Advertising
1 2 (66.67%) Finance
2 1 (33.33%) Banking
Job Titles
1 1 (33.33%) Programmer
1 1 (33.33%) RACF Programmer
1 1 (33.33%) Systems Programmer
Libraries, Frameworks & Software Standards
1 2 (66.67%) ISPF
1 2 (66.67%) Middleware
Miscellaneous
1 2 (66.67%) iSeries
1 2 (66.67%) Tandem
2 1 (33.33%) IBM Mainframe
2 1 (33.33%) Mainframe
Operating Systems
1 2 (66.67%) Unix
1 2 (66.67%) Windows
2 1 (33.33%) MVS
Processes & Methodologies
1 2 (66.67%) B2B
1 2 (66.67%) Stakeholder Management
Programming Languages
1 2 (66.67%) JCL
System Software
1 2 (66.67%) Time Sharing Option
2 1 (33.33%) RACF
Systems Management
1 1 (33.33%) zSecure
Vendors
1 3 (100.00%) IBM
2 2 (66.67%) IBM Sterling