The following table provides summary statistics for permanent job vacancies advertised in London with a requirement for Informix skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Informix over the 3 months to 27 April 2017 with a comparison to the same period in the previous 2 years.

IBM Informix
England / London
3 months to
27 Apr 2017
Same period 2016 Same period 2015
Rank 579 657 661
Rank change year-on-year +78 +4  
Permanent jobs citing Informix 13 7 12
As % of all permanent IT jobs advertised in London 0.038% 0.016% 0.027%
As % of the Database & Business Intelligence category 0.13% 0.053% 0.086%
Number of salaries quoted 5 7 10
Median salary £35,000 £42,500 £37,500
Median salary % change year-on-year -17.64% +13.33%  
UK excluding London median salary £47,500 £50,000 £42,500
% change year-on-year -5.00% +17.64%  

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 permanent job vacancies advertised in London with a requirement for database and business intelligence skills.

Database & Business Intelligence Skills
London
Permanent job vacancies with a requirement for database and business intelligence skills 10374 13209 13956
As % of all permanent IT job vacancies advertised in London 30.33% 31.13% 31.30%
Number of salaries quoted 8917 11559 11968
Median salary £60,000 £57,500 £55,000
Median salary % change year-on-year +4.34% +4.54%  
90% offered a salary of more than £40,000 £40,000 £39,000
10% offered a salary of more than £85,000 £80,000 £80,000
UK excluding London median salary £42,500 £42,500 £40,000
% change year-on-year - +6.25%  

Informix
Job Vacancy Trend in London

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

Job vacancy trend for Informix in London

Informix
Salary Trend in London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing Informix in London.

Salary trend for Informix in London

Informix
Salary Histogram in London

The salary distribution of IT jobs citing Informix in London over the 3 months to 27 April 2017.

Salary histogram for Informix in London

For the 6 months to 27 April 2017, IT jobs citing Informix also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the London region with a requirement for Informix.

1 15 (88.24%) MySQL
2 13 (76.47%) Linux
3 12 (70.59%) Subversion
3 12 (70.59%) Git (software)
4 11 (64.71%) SQL Server
5 9 (52.94%) Python
5 9 (52.94%) Windows
6 8 (47.06%) Cognizant
6 8 (47.06%) Java
6 8 (47.06%) VMware
6 8 (47.06%) LoadRunner
6 8 (47.06%) JMeter
6 8 (47.06%) Amazon AWS
6 8 (47.06%) Agile Software Development
6 8 (47.06%) JIRA
6 8 (47.06%) Selenium
6 8 (47.06%) VMware Infrastructure
6 8 (47.06%) Puppet
6 8 (47.06%) Ansible
6 8 (47.06%) Docker
7 7 (41.18%) DevOps
7 7 (41.18%) MongoDB
7 7 (41.18%) Oracle
8 5 (29.41%) Perl
8 5 (29.41%) Apache
8 5 (29.41%) Red Hat
8 5 (29.41%) PostgreSQL
8 5 (29.41%) CentOS
8 5 (29.41%) Red Hat Enterprise Linux
9 4 (23.53%) Cloud Computing

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:

Application Platforms
1 5 (29.41%) Apache
2 4 (23.53%) MS Exchange
Cloud Services
1 8 (47.06%) Amazon AWS
2 4 (23.53%) Amazon EC2
2 4 (23.53%) Amazon S3
2 4 (23.53%) AWS Elastic Beanstalk
2 4 (23.53%) Cloud Computing
2 4 (23.53%) GitHub
2 4 (23.53%) Loggly
2 4 (23.53%) Microsoft Azure
2 4 (23.53%) OpenShift
2 4 (23.53%) Virtual Private Cloud
Communications & Networking
1 4 (23.53%) Cisco ASA
1 4 (23.53%) DNS
1 4 (23.53%) Firewall
1 4 (23.53%) FTP
1 4 (23.53%) IPv4
1 4 (23.53%) Kerberos
1 4 (23.53%) LAN
1 4 (23.53%) OpenLDAP
1 4 (23.53%) SMTP
1 4 (23.53%) SSL
1 4 (23.53%) TCP/IP
1 4 (23.53%) VLAN
1 4 (23.53%) VPN
1 4 (23.53%) VRRP
1 4 (23.53%) WAN
1 4 (23.53%) Wireless
2 1 (5.88%) InfiniBand
2 1 (5.88%) SAN
Database & Business Intelligence
1 15 (88.24%) MySQL
2 11 (64.71%) SQL Server
3 7 (41.18%) MongoDB
4 5 (29.41%) PostgreSQL
5 4 (23.53%) Apache Cassandra
5 4 (23.53%) Redis
6 3 (17.65%) MariaDB
6 3 (17.65%) NoSQL
7 1 (5.88%) Sybase ASE
Development Applications
1 12 (70.59%) Git (software)
1 12 (70.59%) Subversion
2 8 (47.06%) JIRA
2 8 (47.06%) JMeter
2 8 (47.06%) LoadRunner
2 8 (47.06%) Selenium
3 4 (23.53%) Ant
3 4 (23.53%) Atlassian Bamboo
3 4 (23.53%) Eclipse
3 4 (23.53%) eggPlant
3 4 (23.53%) HP UFT
3 4 (23.53%) IntelliJ
3 4 (23.53%) LoadUI
3 4 (23.53%) Maven
3 4 (23.53%) SilkPerformer
3 4 (23.53%) SilkTest
3 4 (23.53%) Team Foundation Server
3 4 (23.53%) TeamCity
3 4 (23.53%) Vagrant
3 4 (23.53%) Visual Studio
General
1 3 (17.65%) Banking
1 3 (17.65%) Finance
2 2 (11.76%) Financial Institution
3 1 (5.88%) Games
Job Titles
1 7 (41.18%) Administrator
2 4 (23.53%) DBA
2 4 (23.53%) DevOps Engineer
2 4 (23.53%) Senior Systems Administrator
2 4 (23.53%) Systems Administrator
2 4 (23.53%) Test Practitioner
3 1 (5.88%) Infrastructure Engineer
3 1 (5.88%) Linux Engineer
3 1 (5.88%) Network Engineer
3 1 (5.88%) Network Infrastructure Engineer
3 1 (5.88%) Network Systems Engineer
3 1 (5.88%) Sybase DBA
Libraries, Frameworks & Software Standards
1 4 (23.53%) .NET
1 4 (23.53%) Elastic Stack
1 4 (23.53%) SOAP
2 1 (5.88%) LAPP Stack
Miscellaneous
1 3 (17.65%) Computer Science
1 3 (17.65%) Data Centre
2 1 (5.88%) Hedge funds
2 1 (5.88%) Replication
Operating Systems
1 13 (76.47%) Linux
2 9 (52.94%) Windows
3 5 (29.41%) CentOS
3 5 (29.41%) Red Hat Enterprise Linux
4 4 (23.53%) Ubuntu
5 2 (11.76%) Unix
Processes & Methodologies
1 8 (47.06%) Agile Software Development
2 7 (41.18%) DevOps
3 4 (23.53%) Agile Testing
3 4 (23.53%) Coaching
3 4 (23.53%) Configuration Management
3 4 (23.53%) Continuous Delivery
3 4 (23.53%) Continuous Improvement
3 4 (23.53%) Continuous Integration
3 4 (23.53%) Functional Testing
3 4 (23.53%) Kanban
3 4 (23.53%) Performance Testing
3 4 (23.53%) Project Management
3 4 (23.53%) Project Planning
3 4 (23.53%) RAD
3 4 (23.53%) Scrum
3 4 (23.53%) Stakeholder Management
3 4 (23.53%) Systems Analysis
3 4 (23.53%) TDD
3 4 (23.53%) Test Automation
3 4 (23.53%) Waterfall
Programming Languages
1 9 (52.94%) Python
2 8 (47.06%) Java
3 5 (29.41%) Perl
4 4 (23.53%) AWK
4 4 (23.53%) C++
4 4 (23.53%) Groovy
4 4 (23.53%) JavaScript
4 4 (23.53%) Shell Script
4 4 (23.53%) SQL
5 1 (5.88%) Bash Shell
Qualifications
1 1 (5.88%) CCNP
1 1 (5.88%) Cisco Certification
System Software
1 8 (47.06%) Docker
1 8 (47.06%) VMware Infrastructure
2 4 (23.53%) LXC
2 4 (23.53%) Squid
3 1 (5.88%) NFS
3 1 (5.88%) Samba
Systems Management
1 8 (47.06%) Ansible
1 8 (47.06%) Puppet
2 4 (23.53%) Business Desktop Deployment
2 4 (23.53%) HP Quality Center
2 4 (23.53%) Opscode Chef
2 4 (23.53%) Systems Management Server (SMS)
Vendors
1 8 (47.06%) Cognizant
1 8 (47.06%) VMware
2 7 (41.18%) Oracle
3 5 (29.41%) Red Hat
4 4 (23.53%) CA Agile Central
4 4 (23.53%) Cisco
4 4 (23.53%) IBM
4 4 (23.53%) Microsoft
4 4 (23.53%) Splunk
4 4 (23.53%) Sybase