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 22 March 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.

3 months to
22 Mar 2017
Same period 2016 Same period 2015
IBM Informix
England / London
Rank 402 416 404
Rank change year-on-year +14 -12  
Contract jobs citing Informix 6 4 8
As % of all contract IT jobs advertised in London 0.031% 0.018% 0.038%
As % of the Database & Business Intelligence category 0.13% 0.075% 0.16%
Number of daily rates quoted 4 4 2
Median daily rate £406 £513 £600
Median daily rate % change year-on-year -20.73% -14.58%  
90% offered a daily rate of more than £363 £483 £480
10% offered a daily rate of more than £450 £546 £720
UK excluding London median daily rate £413 £400 £350
% change year-on-year +3.12% +14.28%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

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 4751 5306 4977
As % of all contract IT job vacancies advertised in London 24.94% 24.15% 23.89%
Number of daily rates quoted 3434 3809 3430
Median daily rate £485 £475 £450
Median daily rate % change year-on-year +2.10% +5.55%  
90% offered a daily rate of more than £350 £325 £310
10% offered a daily rate of more than £625 £625 £588
UK excluding London median daily rate £395 £388 £375
% change year-on-year +1.93% +3.33%  
Number of hourly rates quoted 16 33 38
Median hourly rate £30.00 £43.00 £24.23
Median hourly rate % change year-on-year -30.23% +77.46%  
90% offered a hourly rate of more than £19.00 £19.00 £14.20
10% offered a hourly rate of more than £125.00 £50.00 £55.00
UK excluding London median hourly rate £30.25 £33.00 £32.50
% change year-on-year -8.33% +1.53%  

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 Hourly Rate Trend in London

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

Contractor hourly rate trend for Informix in London

Informix
Top 30 Related IT Skills in London

For the 6 months to 22 March 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 10 (83.33%) SQL Server
2 7 (58.33%) Sybase
3 6 (50.00%) Linux
4 5 (41.67%) RDBMS
4 5 (41.67%) Relational Database
5 4 (33.33%) Oracle
5 4 (33.33%) Unix
5 4 (33.33%) DB2
5 4 (33.33%) Perl
6 3 (25.00%) SQL
6 3 (25.00%) Web Services
6 3 (25.00%) BizTalk Server
6 3 (25.00%) Middleware
6 3 (25.00%) IBM
6 3 (25.00%) ERP
6 3 (25.00%) N-Tier
6 3 (25.00%) Validation
6 3 (25.00%) Migration
6 3 (25.00%) SQL Anywhere
6 3 (25.00%) QA
6 3 (25.00%) Velocity
6 3 (25.00%) Data Mapping
6 3 (25.00%) Data Architecture
6 3 (25.00%) Reverse Engineering
6 3 (25.00%) Hadoop
6 3 (25.00%) Microsoft Azure
6 3 (25.00%) NoSQL
6 3 (25.00%) High Availability
6 3 (25.00%) Open Source
6 3 (25.00%) IT Strategy

Informix
Top Related 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:

Application Platforms
1 3 (25.00%) BizTalk Server
Applications
1 2 (16.67%) MS Excel
Cloud Services
1 3 (25.00%) Microsoft Azure
2 2 (16.67%) Amazon AWS
2 2 (16.67%) Amazon EC2
2 2 (16.67%) Amazon S3
2 2 (16.67%) AWS Elastic Beanstalk
2 2 (16.67%) GitHub
2 2 (16.67%) Loggly
2 2 (16.67%) OpenShift
2 2 (16.67%) Virtual Private Cloud
Communications & Networking
1 2 (16.67%) Firewall
1 2 (16.67%) SAN
Database & Business Intelligence
1 10 (83.33%) SQL Server
2 5 (41.67%) RDBMS
2 5 (41.67%) Relational Database
3 4 (33.33%) DB2
4 3 (25.00%) Hadoop
4 3 (25.00%) NoSQL
4 3 (25.00%) SQL Anywhere
5 2 (16.67%) Apache Cassandra
5 2 (16.67%) Microsoft Analysis Services
5 2 (16.67%) MongoDB
5 2 (16.67%) MySQL
5 2 (16.67%) SQL Server Analysis Services
Development Applications
1 2 (16.67%) Ant
1 2 (16.67%) Artifactory
1 2 (16.67%) Atlassian Bamboo
1 2 (16.67%) Bitbucket
1 2 (16.67%) Eclipse
1 2 (16.67%) Git (software)
1 2 (16.67%) Gradle
1 2 (16.67%) HP UFT
1 2 (16.67%) IntelliJ
1 2 (16.67%) Jenkins
1 2 (16.67%) JIRA
1 2 (16.67%) JMeter
1 2 (16.67%) LoadRunner
1 2 (16.67%) Maven
1 2 (16.67%) Selenium
1 2 (16.67%) Sonatype Nexus
1 2 (16.67%) Subversion
1 2 (16.67%) Team Foundation Server
1 2 (16.67%) TeamCity
1 2 (16.67%) Visual Studio
General
1 2 (16.67%) French Language
1 2 (16.67%) German Language
Job Titles
1 4 (33.33%) Analyst
2 3 (25.00%) Architect
2 3 (25.00%) Enterprise Architect
3 2 (16.67%) AWS DevOps
3 2 (16.67%) AWS Engineer
3 2 (16.67%) Data Analyst
3 2 (16.67%) Data Integration Analyst
3 2 (16.67%) Database Architect
3 2 (16.67%) Developer
3 2 (16.67%) DevOps Engineer
3 2 (16.67%) Integration Analyst
3 2 (16.67%) Linux Support
3 2 (16.67%) Perl Developer
3 2 (16.67%) Support Analyst
3 2 (16.67%) Technical Analyst
3 2 (16.67%) Technical Support
3 2 (16.67%) Technical Support Analyst
4 1 (8.33%) BizTalk Engineer
4 1 (8.33%) Data Architect
4 1 (8.33%) Enterprise Data Architect
Libraries, Frameworks & Software Standards
1 3 (25.00%) Middleware
1 3 (25.00%) Velocity
1 3 (25.00%) Web Services
2 2 (16.67%) Elastic Stack
2 2 (16.67%) Moose
2 2 (16.67%) SAML
Miscellaneous
1 3 (25.00%) N-Tier
Operating Systems
1 6 (50.00%) Linux
2 4 (33.33%) Unix
3 2 (16.67%) Solaris
3 2 (16.67%) Windows
Processes & Methodologies
1 3 (25.00%) Data Architecture
1 3 (25.00%) Data Mapping
1 3 (25.00%) ERP
1 3 (25.00%) High Availability
1 3 (25.00%) IT Strategy
1 3 (25.00%) Migration
1 3 (25.00%) Open Source
1 3 (25.00%) Reverse Engineering
1 3 (25.00%) Validation
2 2 (16.67%) Configuration Management
2 2 (16.67%) Continuous Delivery
2 2 (16.67%) Continuous Integration
2 2 (16.67%) Data Integration
2 2 (16.67%) DevOps
2 2 (16.67%) Integration Testing
2 2 (16.67%) Network Monitoring
2 2 (16.67%) OO
2 2 (16.67%) RAD
2 2 (16.67%) SDLC
2 2 (16.67%) Test Automation
Programming Languages
1 4 (33.33%) Perl
2 3 (25.00%) SQL
3 2 (16.67%) AWK
3 2 (16.67%) Korn
3 2 (16.67%) Python
3 2 (16.67%) Shell Script
3 2 (16.67%) T-SQL
Quality Assurance & Compliance
1 3 (25.00%) QA
System Software
1 2 (16.67%) Docker
1 2 (16.67%) LXC
Systems Management
1 2 (16.67%) Ansible
1 2 (16.67%) Opscode Chef
1 2 (16.67%) Puppet
Vendors
1 7 (58.33%) Sybase
2 4 (33.33%) Oracle
3 3 (25.00%) IBM
4 2 (16.67%) Microsoft
4 2 (16.67%) Splunk