The following table provides summary statistics for contract job vacancies advertised in London with a requirement for Informix skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Informix over the 3 months to 24 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 Informix
England / London
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 407 427 411
Rank change year-on-year +20 -16  
Contract jobs citing Informix 5 1 11
As % of all contract IT jobs advertised in London 0.024% 0.005% 0.047%
As % of the Database & Business Intelligence category 0.10% 0.020% 0.20%
Number of daily rates quoted 2 1 7
Median daily rate £488 £285 £300
Median daily rate % change year-on-year +71.05% -5.00%  
UK excluding London median daily rate £388 £475 £378
% change year-on-year -18.42% +25.82%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - £19.50

Informix is in the database and business intelligence skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for database and business intelligence skills.

Contract Database & Business Intelligence Skills
London
Contract job vacancies with a requirement for database and business intelligence skills 4854 4955 5570
As % of all contract IT job vacancies advertised in London 23.75% 22.86% 23.80%
Number of daily rates quoted 3530 3663 3913
Median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.55%  
90% offered a daily rate of more than £363 £338 £300
10% offered a daily rate of more than £625 £625 £600
UK excluding London median daily rate £400 £383 £350
% change year-on-year +4.57% +9.28%  
Number of hourly rates quoted 28 20 51
Median hourly rate £24.66 £35.00 £27.78
Median hourly rate % change year-on-year -29.54% +25.98%  
90% offered a hourly rate of more than £21.50 £16.53 £15.58
10% offered a hourly rate of more than £40.98 £109.00 £55.00
UK excluding London median hourly rate £38.00 £31.00 £26.00
% change year-on-year +22.58% +19.23%  

Informix
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing Informix as a proportion of all contract or permanent IT jobs with a match in the Database & Business Intelligence category.

Job vacancy trend for Informix in London

Informix
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for Informix in London

Informix
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing Informix in London over the 3 months to 24 June 2017.

Contractor daily rate histogram for Informix in London

Informix
Contractor Hourly Rate Trend in London

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

Contractor hourly rate trend for Informix in London

For the 6 months to 24 June 2017, IT contractor jobs citing Informix 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 London region with a requirement for Informix.

1 8 (72.73%) Linux
2 7 (63.64%) Unix
2 7 (63.64%) Sybase
2 7 (63.64%) DB2
2 7 (63.64%) Oracle
3 5 (45.45%) SQL Server
3 5 (45.45%) Perl
4 4 (36.36%) Solaris
5 3 (27.27%) Firewall
5 3 (27.27%) Microsoft Analysis Services
5 3 (27.27%) Korn
5 3 (27.27%) French Language
5 3 (27.27%) German Language
5 3 (27.27%) T-SQL
5 3 (27.27%) ITIL
5 3 (27.27%) Windows
5 3 (27.27%) SAN
5 3 (27.27%) SAML
5 3 (27.27%) Shell Script
5 3 (27.27%) OO
5 3 (27.27%) RDBMS
5 3 (27.27%) Microsoft
5 3 (27.27%) Integration Testing
5 3 (27.27%) SQL Server Analysis Services
5 3 (27.27%) Team Foundation Server
5 3 (27.27%) Network Monitoring
5 3 (27.27%) Relational Database
5 3 (27.27%) Moose
5 3 (27.27%) SDLC
6 2 (18.18%) Elastic Stack

Informix
Co-occurring IT Skills in 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:

Cloud Services
1 2 (18.18%) Amazon AWS
1 2 (18.18%) Amazon EC2
1 2 (18.18%) Amazon S3
1 2 (18.18%) AWS Elastic Beanstalk
1 2 (18.18%) GitHub
1 2 (18.18%) Loggly
1 2 (18.18%) OpenShift
1 2 (18.18%) Virtual Private Cloud
Communications & Networking
1 3 (27.27%) Firewall
1 3 (27.27%) SAN
2 1 (9.09%) Internet
2 1 (9.09%) TCP/IP
Database & Business Intelligence
1 7 (63.64%) DB2
2 5 (45.45%) SQL Server
3 3 (27.27%) Microsoft Analysis Services
3 3 (27.27%) RDBMS
3 3 (27.27%) Relational Database
3 3 (27.27%) SQL Server Analysis Services
4 2 (18.18%) Apache Cassandra
4 2 (18.18%) MongoDB
4 2 (18.18%) MySQL
Development Applications
1 3 (27.27%) Team Foundation Server
2 2 (18.18%) Ant
2 2 (18.18%) Artifactory
2 2 (18.18%) Atlassian Bamboo
2 2 (18.18%) Bitbucket
2 2 (18.18%) Cucumber
2 2 (18.18%) Eclipse
2 2 (18.18%) Gradle
2 2 (18.18%) HP UFT
2 2 (18.18%) IntelliJ
2 2 (18.18%) Jenkins
2 2 (18.18%) JIRA
2 2 (18.18%) JMeter
2 2 (18.18%) LoadRunner
2 2 (18.18%) Maven
2 2 (18.18%) Selenium
2 2 (18.18%) Sonatype Nexus
2 2 (18.18%) Subversion
2 2 (18.18%) TeamCity
2 2 (18.18%) Visual Studio
General
1 3 (27.27%) French Language
1 3 (27.27%) German Language
2 1 (9.09%) Finance
2 1 (9.09%) Financial Institution
Job Titles
1 5 (45.45%) Developer
2 3 (27.27%) Analyst
2 3 (27.27%) Linux Support
2 3 (27.27%) Perl Developer
2 3 (27.27%) Support Analyst
3 2 (18.18%) AWS DevOps
3 2 (18.18%) AWS DevOps Engineer
3 2 (18.18%) AWS Engineer
3 2 (18.18%) DevOps Engineer
3 2 (18.18%) Technical Analyst
3 2 (18.18%) Technical Support
3 2 (18.18%) Technical Support Analyst
4 1 (9.09%) Applications Developer
4 1 (9.09%) Informix Developer
4 1 (9.09%) NOC Technician
4 1 (9.09%) Systems Developer
Libraries, Frameworks & Software Standards
1 3 (27.27%) Moose
1 3 (27.27%) SAML
2 2 (18.18%) Elastic Stack
3 1 (9.09%) Web Services
Operating Systems
1 8 (72.73%) Linux
2 7 (63.64%) Unix
3 4 (36.36%) Solaris
4 3 (27.27%) Windows
5 1 (9.09%) Windows 10
5 1 (9.09%) Windows 7
5 1 (9.09%) Windows Server
5 1 (9.09%) Windows Server 2012
Processes & Methodologies
1 3 (27.27%) Integration Testing
1 3 (27.27%) ITIL
1 3 (27.27%) Network Monitoring
1 3 (27.27%) OO
1 3 (27.27%) SDLC
2 2 (18.18%) Configuration Management
2 2 (18.18%) Continuous Delivery
2 2 (18.18%) Continuous Integration
2 2 (18.18%) DevOps
2 2 (18.18%) RAD
2 2 (18.18%) Task Automation
2 2 (18.18%) Test Automation
3 1 (9.09%) Change Management
3 1 (9.09%) Customer Requirements
3 1 (9.09%) Release Management
Programming Languages
1 5 (45.45%) Perl
2 3 (27.27%) Korn
2 3 (27.27%) Shell Script
2 3 (27.27%) T-SQL
3 2 (18.18%) AWK
3 2 (18.18%) Java
3 2 (18.18%) Python
4 1 (9.09%) C
4 1 (9.09%) C++
4 1 (9.09%) JavaScript
4 1 (9.09%) SQL
4 1 (9.09%) VBScript
Qualifications
1 1 (9.09%) Degree
1 1 (9.09%) Sun Certification
System Software
1 2 (18.18%) Docker
1 2 (18.18%) LXC
Systems Management
1 2 (18.18%) Ansible
1 2 (18.18%) Opscode Chef
1 2 (18.18%) Puppet
2 1 (9.09%) Tivoli
Vendors
1 7 (63.64%) Oracle
1 7 (63.64%) Sybase
2 3 (27.27%) Microsoft
3 2 (18.18%) Splunk
4 1 (9.09%) Remedy
4 1 (9.09%) Sun