Period
to 18 September 2018

The following table provides summary statistics for contract job vacancies advertised in the South East with a requirement for CentOS skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited CentOS over the 6 months to 18 September 2018 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.

CentOS Linux
England > South East
6 months to
18 Sep 2018
Same period 2017 Same period 2016
Rank 275 268 293
Rank change year-on-year -7 +25 +61
Contract jobs citing CentOS 103 113 89
As % of all contract IT jobs advertised in the South East 0.62% 0.69% 0.51%
As % of the Operating Systems category 2.88% 3.11% 2.17%
Number of daily rates quoted 61 78 77
South East median daily rate £425 £475 £438
Median daily rate % change year-on-year -10.53% +8.57% +5.11%
10th Percentile £350 £316 £281
90th Percentile £575 £613 £500
England median daily rate £500 £496 £450
% change year-on-year +0.78% +10.26% +9.76%
Number of hourly rates quoted 2 3 2
South East median hourly rate £54.75 £18.00 £55.00
Median hourly rate % change year-on-year +204.17% -67.27% -
10th Percentile £49.88 £17.00 £52.50
90th Percentile £59.03 £19.00 £57.50
England median hourly rate £49.50 £35.00 £13.50
% change year-on-year +41.43% +159.26% -62.50%

CentOS is in the Operating Systems category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the South East with a requirement for operating system skills.

All Operating Systems
South East
Contract vacancies with a requirement for operating system skills 3,572 3,634 4,105
As % of all contract IT jobs advertised in the South East 21.54% 22.32% 23.74%
Number of daily rates quoted 1,920 2,018 2,459
South East median daily rate £413 £400 £380
Median daily rate % change year-on-year +3.13% +5.26% +4.83%
10th Percentile £163 £175 £200
90th Percentile £563 £538 £530
England median daily rate £438 £425 £410
% change year-on-year +2.94% +3.66% +5.81%
Number of hourly rates quoted 322 270 266
South East median hourly rate £18.60 £17.50 £17.75
Median hourly rate % change year-on-year +6.29% -1.41% +1.43%
10th Percentile £11.17 £10.73 £10.75
90th Percentile £51.00 £49.55 £47.92
England median hourly rate £17.50 £17.50 £16.50
% change year-on-year - +6.06% +0.46%

CentOS
Job Vacancy Trend in the South East

Job postings citing CentOS as a percentage of all IT jobs advertised in the South East.

Job vacancy trend for CentOS in the South East

CentOS
Contractor Daily Rate Trend in the South East

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing CentOS in the South East.

Contractor daily rate trend for CentOS in the South East

CentOS
Contractor Daily Rate Histogram in the South East

The daily rate distribution of IT jobs citing CentOS in the South East over the 6 months to 18 September 2018.

Contractor daily rate histogram for CentOS in the South East

CentOS
Contractor Hourly Rate Trend in the South East

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing CentOS in the South East.

Contractor hourly rate trend for CentOS in the South East

CentOS
Contractor Hourly Rate Histogram in the South East

The hourly rate distribution of IT jobs citing CentOS in the South East over the 6 months to 18 September 2018.

Contractor hourly rate histogram for CentOS in the South East

CentOS
Contract Job Locations in the South East

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the South East region over the 6 months to 18 September 2018. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Thames Valley +3 51 £434 +2.18% 17
Berkshire +1 35 £488 -2.50% 9
West Sussex +6 17 £383 - 3
Hampshire -39 17 £475 -3.06% 8
Surrey -39 13 £488 +2.63% 9
Buckinghamshire +19 8 £429 +31.85% 4
Oxfordshire +1 8 £400 - 4
Middlesex +7 2 £431 +32.62%
Sussex - 1 £400 -
CentOS
England

For the 6 months to 18 September 2018, IT contractor jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the South East region with a requirement for CentOS.

1 103 (100.00%) Linux
2 53 (51.46%) Puppet
3 52 (50.49%) Red Hat Enterprise Linux
4 45 (43.69%) Red Hat
5 42 (40.78%) Ansible
5 42 (40.78%) DevOps
6 38 (36.89%) Python
6 38 (36.89%) Configuration Management
7 35 (33.98%) Security Cleared
8 34 (33.01%) Amazon AWS
8 34 (33.01%) Unix
9 31 (30.10%) SC Cleared
10 28 (27.18%) Docker
11 26 (25.24%) Jenkins
11 26 (25.24%) Shell Script
11 26 (25.24%) VMware
12 24 (23.30%) Ubuntu
13 23 (22.33%) Windows
13 23 (22.33%) Perl
14 20 (19.42%) Microsoft
15 19 (18.45%) DNS
15 19 (18.45%) Git (software)
15 19 (18.45%) Opscode Chef
16 18 (17.48%) Terraform
16 18 (17.48%) Bash Shell
17 17 (16.50%) Agile Software Development
17 17 (16.50%) VMware Infrastructure
17 17 (16.50%) Oracle
17 17 (16.50%) ITIL
18 15 (14.56%) Active Directory

CentOS
Co-occurring IT Skills in the South East 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 11 (10.68%) Apache
2 7 (6.80%) Elasticsearch
2 7 (6.80%) nginx
3 5 (4.85%) lighttpd
3 5 (4.85%) OpenStack
4 4 (3.88%) Confluence
5 1 (0.97%) ColdFusion
5 1 (0.97%) Ethereum
5 1 (0.97%) Hyperledger
Applications
1 6 (5.83%) Microsoft Office
Business Applications
1 1 (0.97%) Distributed Ledger
1 1 (0.97%) Towers Watson Igloo
Cloud Services
1 34 (33.01%) Amazon AWS
2 10 (9.71%) Microsoft Azure
3 7 (6.80%) AWS CloudFormation
4 6 (5.83%) Google Cloud Platform
5 4 (3.88%) GitHub
6 3 (2.91%) Amazon S3
7 2 (1.94%) Amazon EC2
7 2 (1.94%) Amazon ELB
7 2 (1.94%) AWS Lambda
7 2 (1.94%) Cloud Computing
7 2 (1.94%) CloudBees
7 2 (1.94%) IaaS
7 2 (1.94%) Route 53
7 2 (1.94%) Serverless
7 2 (1.94%) Virtual Private Cloud
8 1 (0.97%) Amazon CloudWatch
8 1 (0.97%) Datadog
8 1 (0.97%) OpenShift
Communications & Networking
1 19 (18.45%) DNS
2 11 (10.68%) TCP/IP
3 8 (7.77%) DHCP
3 8 (7.77%) Firewall
3 8 (7.77%) SSL
4 7 (6.80%) Fibre Channel
4 7 (6.80%) HTTP
4 7 (6.80%) SAN
5 6 (5.83%) Internet
5 6 (5.83%) VPN
6 4 (3.88%) HTTPS
6 4 (3.88%) LAN
6 4 (3.88%) WAN
7 3 (2.91%) SSH
8 2 (1.94%) IPsec
8 2 (1.94%) OpenVPN
9 1 (0.97%) Cisco ASA
9 1 (0.97%) Cisco Nexus
9 1 (0.97%) NAS
9 1 (0.97%) VLAN
Database & Business Intelligence
1 14 (13.59%) Hadoop
2 11 (10.68%) MongoDB
3 9 (8.74%) Big Data
3 9 (8.74%) MySQL
3 9 (8.74%) PostgreSQL
4 4 (3.88%) Apache Cassandra
4 4 (3.88%) NoSQL
4 4 (3.88%) Redis
5 3 (2.91%) Relational Database
6 2 (1.94%) Amazon DynamoDB
6 2 (1.94%) MariaDB
6 2 (1.94%) RDBMS
7 1 (0.97%) Amazon RDS
7 1 (0.97%) Blockchain
7 1 (0.97%) Oracle Database
7 1 (0.97%) Oracle Database 10g
7 1 (0.97%) Oracle Database 11g
7 1 (0.97%) Oracle Database 12c
7 1 (0.97%) SQL Server 2014
7 1 (0.97%) SQL Server 2016
Development Applications
1 26 (25.24%) Jenkins
2 19 (18.45%) Git (software)
3 9 (8.74%) JIRA
4 5 (4.85%) Artifactory
4 5 (4.85%) Sonatype Nexus
4 5 (4.85%) Vagrant
5 4 (3.88%) Bitbucket
6 2 (1.94%) Atlassian Bamboo
6 2 (1.94%) Travis CI
General
1 3 (2.91%) Telecoms
2 2 (1.94%) Automotive
2 2 (1.94%) Games
3 1 (0.97%) Legal
3 1 (0.97%) Retail
Job Titles
1 33 (32.04%) DevOps Engineer
2 21 (20.39%) Administrator
3 19 (18.45%) Systems Administrator
4 18 (17.48%) Linux Administrator
5 17 (16.50%) Linux Systems Administrator
6 14 (13.59%) Linux Engineer
7 13 (12.62%) Unix Administrator
8 12 (11.65%) Architect
8 12 (11.65%) Unix Systems Administrator
9 10 (9.71%) Unix Linux Systems Administrator
10 9 (8.74%) AWS DevOps
11 7 (6.80%) AWS DevOps Engineer
11 7 (6.80%) AWS Engineer
11 7 (6.80%) Cloud Engineer
12 6 (5.83%) Kubernetes Engineer
12 6 (5.83%) Linux DevOps Engineer
12 6 (5.83%) Linux/Unix DevOps
13 5 (4.85%) Consultant
13 5 (4.85%) Developer
13 5 (4.85%) DevOps Consultant
Libraries, Frameworks & Software Standards
1 14 (13.59%) Elastic Stack
2 13 (12.62%) LDAP
3 9 (8.74%) Kafka
3 9 (8.74%) Web Services
4 5 (4.85%) LAPP Stack
5 4 (3.88%) MCollective
5 4 (3.88%) Sensu
5 4 (3.88%) YAML
6 3 (2.91%) CSS
6 3 (2.91%) HTML
6 3 (2.91%) LAMP
6 3 (2.91%) Node.js
6 3 (2.91%) RabbitMQ
6 3 (2.91%) Software Packaging
7 2 (1.94%) AngularJS
7 2 (1.94%) HTML5
7 2 (1.94%) SOAP
8 1 (0.97%) CSS3
8 1 (0.97%) Express
8 1 (0.97%) Twitter Bootstrap
Miscellaneous
1 7 (6.80%) Management Information System
1 7 (6.80%) PKI
2 5 (4.85%) Linux Command Line
3 4 (3.88%) Computer Science
3 4 (3.88%) Data Centre
3 4 (3.88%) Video on Demand
4 3 (2.91%) Public Cloud
5 1 (0.97%) Analytical Skills
5 1 (0.97%) BBC
5 1 (0.97%) CESG
5 1 (0.97%) Clustering
5 1 (0.97%) Distributed Denial-of-Service
5 1 (0.97%) Fat Client
5 1 (0.97%) Greenfield Project
5 1 (0.97%) Private Cloud
5 1 (0.97%) Replication
5 1 (0.97%) Thin Client
Operating Systems
1 103 (100.00%) Linux
2 52 (50.49%) Red Hat Enterprise Linux
3 34 (33.01%) Unix
4 24 (23.30%) Ubuntu
5 23 (22.33%) Windows
6 14 (13.59%) Solaris
7 7 (6.80%) SUSE
8 6 (5.83%) Debian
9 5 (4.85%) FreeBSD
9 5 (4.85%) Windows 10
9 5 (4.85%) Windows Server
10 4 (3.88%) HPUX
10 4 (3.88%) Windows Server 2008
11 3 (2.91%) Windows 7
11 3 (2.91%) Windows Server 2012
12 2 (1.94%) Amazon Linux
12 2 (1.94%) Fedora
13 1 (0.97%) DC/OS
Processes & Methodologies
1 42 (40.78%) DevOps
2 38 (36.89%) Configuration Management
3 17 (16.50%) Agile Software Development
3 17 (16.50%) ITIL
4 13 (12.62%) Disaster Recovery
5 12 (11.65%) Open Source
5 12 (11.65%) Runbook
6 11 (10.68%) Continuous Integration
7 10 (9.71%) Server Hardening
8 9 (8.74%) Scrum
9 8 (7.77%) Change Management
9 8 (7.77%) High Availability
9 8 (7.77%) Performance Tuning
9 8 (7.77%) Virtual Infrastructure
10 7 (6.80%) Benchmarking
10 7 (6.80%) Business Continuity
10 7 (6.80%) ERP
10 7 (6.80%) Information Security
10 7 (6.80%) Problem-Solving
11 6 (5.83%) Migration
Programming Languages
1 38 (36.89%) Python
2 26 (25.24%) Shell Script
3 23 (22.33%) Perl
4 18 (17.48%) Bash Shell
5 9 (8.74%) Ruby
5 9 (8.74%) SQL
6 8 (7.77%) JavaScript
7 7 (6.80%) AWK
7 7 (6.80%) Bourne shell
7 7 (6.80%) Korn
7 7 (6.80%) PowerShell
8 6 (5.83%) Java
9 5 (4.85%) PHP
10 3 (2.91%) C++
11 2 (1.94%) C
11 2 (1.94%) Go
11 2 (1.94%) Groovy
12 1 (0.97%) PL/SQL
12 1 (0.97%) VB
12 1 (0.97%) VBScript
Qualifications
1 35 (33.98%) Security Cleared
2 31 (30.10%) SC Cleared
3 4 (3.88%) Degree
3 4 (3.88%) DV Cleared
3 4 (3.88%) OCA
3 4 (3.88%) OCP
3 4 (3.88%) Oracle Certification
3 4 (3.88%) RHCE
3 4 (3.88%) RHCSA
4 2 (1.94%) Cisco Certification
5 1 (0.97%) BPSS Clearance
5 1 (0.97%) CCNA
5 1 (0.97%) CISM
5 1 (0.97%) CISSP
5 1 (0.97%) MCSE
5 1 (0.97%) Microsoft Certification
Quality Assurance & Compliance
1 2 (1.94%) GCP
1 2 (1.94%) SLA
2 1 (0.97%) COBIT
2 1 (0.97%) Government Security Classifications
2 1 (0.97%) ISO/IEC 27001
2 1 (0.97%) JSP 440
2 1 (0.97%) Sarbanes-Oxley
System Software
1 28 (27.18%) Docker
2 17 (16.50%) VMware Infrastructure
3 15 (14.56%) Active Directory
3 15 (14.56%) Virtual Machines
4 8 (7.77%) iptables
5 7 (6.80%) GlusterFS
5 7 (6.80%) Veritas Cluster Server
5 7 (6.80%) VMware ESXi
6 5 (4.85%) Postfix
6 5 (4.85%) Varnish
7 4 (3.88%) KVM
7 4 (3.88%) VMware Workstation
7 4 (3.88%) Xen
8 3 (2.91%) Hyper-V
8 3 (2.91%) Virtual Desktop
9 2 (1.94%) Btrfs
9 2 (1.94%) NFS
9 2 (1.94%) VirtualBox
9 2 (1.94%) vSphere
10 1 (0.97%) vCloud
Systems Management
1 53 (51.46%) Puppet
2 42 (40.78%) Ansible
3 19 (18.45%) Opscode Chef
4 18 (17.48%) Terraform
5 15 (14.56%) Kubernetes
6 12 (11.65%) Nagios
6 12 (11.65%) SELinux
7 9 (8.74%) Oracle ZFS
8 8 (7.77%) Kibana
9 7 (6.80%) NetBackup
9 7 (6.80%) Red Hat Satellite
9 7 (6.80%) Red Hat Spacewalk
9 7 (6.80%) Veritas Storage Foundation
10 6 (5.83%) logstash
10 6 (5.83%) yum
11 5 (4.85%) Cacti
11 5 (4.85%) Consul
11 5 (4.85%) Packer
12 4 (3.88%) Grafana
12 4 (3.88%) OVSD
Vendors
1 45 (43.69%) Red Hat
2 26 (25.24%) VMware
3 20 (19.42%) Microsoft
4 17 (16.50%) Oracle
5 13 (12.62%) HP
6 7 (6.80%) Brocade
6 7 (6.80%) Capita
6 7 (6.80%) Centrify
6 7 (6.80%) EMC
6 7 (6.80%) Google
6 7 (6.80%) StorageTek
6 7 (6.80%) Sun
6 7 (6.80%) Veritas
7 6 (5.83%) Citrix
7 6 (5.83%) NetApp
8 5 (4.85%) Juniper
8 5 (4.85%) SaltStack
8 5 (4.85%) Splunk
9 4 (3.88%) Thales
10 3 (2.91%) Tekelec