Period
to 15 November 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 15 November 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
15 Nov 2018
Same period 2017 Same period 2016
Rank 291 290 273
Rank change year-on-year -1 -17 +52
Contract jobs citing CentOS 102 82 111
As % of all contract IT jobs advertised in the South East 0.61% 0.49% 0.66%
As % of the Operating Systems category 2.88% 2.13% 2.82%
Number of daily rates quoted 60 66 86
South East median daily rate £448 £419 £438
Median daily rate % change year-on-year +6.87% -4.29% +9.03%
10th Percentile £370 £311 £330
90th Percentile £575 £575 £500
England median daily rate £475 £458 £463
% change year-on-year +3.83% -1.08% +8.82%
Number of hourly rates quoted 1 3 3
South East median hourly rate £60.00 £18.00 £55.00
Median hourly rate % change year-on-year +233.33% -67.27% -
England median hourly rate £44.58 £35.00 £16.00
% change year-on-year +27.36% +118.75% -57.89%

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 3,539 3,858 3,939
As % of all contract IT jobs advertised in the South East 21.14% 22.87% 23.35%
Number of daily rates quoted 1,936 2,153 2,282
South East median daily rate £400 £400 £375
Median daily rate % change year-on-year - +6.67% +3.45%
10th Percentile £160 £150 £186
90th Percentile £575 £545 £538
England median daily rate £425 £425 £410
% change year-on-year - +3.66% +2.50%
Number of hourly rates quoted 295 305 268
South East median hourly rate £17.50 £17.50 £17.03
Median hourly rate % change year-on-year - +2.76% -5.39%
10th Percentile £11.25 £11.25 £11.00
90th Percentile £51.00 £50.25 £48.75
England median hourly rate £17.50 £17.50 £16.50
% change year-on-year - +6.06% -

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 15 November 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
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 15 November 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 +49 56 £429 +7.13% 22
Berkshire +12 39 £440 +17.33% 15
Hampshire -19 22 £475 +7.95% 9
West Sussex 0 16 £394 +2.94% 3
Oxfordshire +25 10 £400 - 6
Buckinghamshire +24 7 £451 +50.25% 1
Surrey -38 5 £425 -10.53% 8
Middlesex +7 1 £450 +30.43%
Sussex - 1 £400 -
CentOS
England

For the 6 months to 15 November 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.

1 102 (100.00%) Linux
2 56 (54.90%) Red Hat Enterprise Linux
2 56 (54.90%) Puppet
3 46 (45.10%) Red Hat
4 45 (44.12%) Ansible
5 38 (37.25%) Configuration Management
6 36 (35.29%) Windows
7 35 (34.31%) Python
8 34 (33.33%) Security Cleared
9 31 (30.39%) Microsoft
10 30 (29.41%) DevOps
11 29 (28.43%) SC Cleared
12 28 (27.45%) Amazon AWS
12 28 (27.45%) Shell Script
13 27 (26.47%) Docker
14 25 (24.51%) Unix
15 24 (23.53%) Bash Shell
16 23 (22.55%) VMware
17 21 (20.59%) Ubuntu
17 21 (20.59%) Opscode Chef
17 21 (20.59%) Jenkins
18 19 (18.63%) Agile Software Development
18 19 (18.63%) Perl
18 19 (18.63%) DNS
19 18 (17.65%) PowerShell
20 17 (16.67%) Git (software)
20 17 (16.67%) Terraform
21 16 (15.69%) Virtual Machines
21 16 (15.69%) VMware Infrastructure
22 15 (14.71%) 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 9 (8.82%) Apache
2 8 (7.84%) Elasticsearch
3 7 (6.86%) OpenStack
4 5 (4.90%) lighttpd
4 5 (4.90%) nginx
4 5 (4.90%) Skype for Business
5 1 (0.98%) Confluence
5 1 (0.98%) Ethereum
5 1 (0.98%) Hyperledger
Applications
1 6 (5.88%) Microsoft Office
2 5 (4.90%) Chatbot
Business Applications
1 1 (0.98%) Distributed Ledger
1 1 (0.98%) Towers Watson Igloo
Cloud Services
1 28 (27.45%) Amazon AWS
2 10 (9.80%) Microsoft Azure
3 7 (6.86%) IaaS
4 6 (5.88%) AWS CloudFormation
5 5 (4.90%) Apigee
5 5 (4.90%) PaaS
6 4 (3.92%) Amazon S3
6 4 (3.92%) Google Cloud Platform
7 2 (1.96%) Amazon CloudWatch
7 2 (1.96%) Amazon EC2
7 2 (1.96%) Amazon ELB
7 2 (1.96%) AWS Lambda
7 2 (1.96%) Cloud Computing
7 2 (1.96%) CloudBees
7 2 (1.96%) Datadog
7 2 (1.96%) Route 53
7 2 (1.96%) Serverless
7 2 (1.96%) Virtual Private Cloud
8 1 (0.98%) OpenShift
8 1 (0.98%) SaaS
Communications & Networking
1 19 (18.63%) DNS
2 12 (11.76%) SSL
3 8 (7.84%) DHCP
3 8 (7.84%) Firewall
3 8 (7.84%) TCP/IP
4 7 (6.86%) HTTP
4 7 (6.86%) Internet
5 5 (4.90%) HTTPS
5 5 (4.90%) LAN
5 5 (4.90%) Skype
5 5 (4.90%) WAN
6 4 (3.92%) Fibre Channel
6 4 (3.92%) SAN
6 4 (3.92%) VPN
7 2 (1.96%) IPsec
7 2 (1.96%) NetScaler
7 2 (1.96%) OpenVPN
8 1 (0.98%) Cisco Nexus
8 1 (0.98%) NAS
8 1 (0.98%) Network Security
Database & Business Intelligence
1 12 (11.76%) Hadoop
2 11 (10.78%) Big Data
3 9 (8.82%) MongoDB
3 9 (8.82%) MySQL
4 8 (7.84%) PostgreSQL
5 5 (4.90%) Apache Cassandra
6 4 (3.92%) Redis
7 3 (2.94%) NoSQL
7 3 (2.94%) Relational Database
8 2 (1.96%) Amazon DynamoDB
8 2 (1.96%) Cloudera CDH
8 2 (1.96%) MariaDB
8 2 (1.96%) RDBMS
8 2 (1.96%) SQL Server
9 1 (0.98%) Blockchain
9 1 (0.98%) InfluxDB
Development Applications
1 21 (20.59%) Jenkins
2 17 (16.67%) Git (software)
3 10 (9.80%) Vagrant
4 8 (7.84%) JIRA
5 3 (2.94%) Sonatype Nexus
6 2 (1.96%) Atlassian Bamboo
6 2 (1.96%) Bitbucket
6 2 (1.96%) Travis CI
General
1 3 (2.94%) Games
2 2 (1.96%) Automotive
2 2 (1.96%) Telecoms
3 1 (0.98%) Retail
Job Titles
1 28 (27.45%) DevOps Engineer
2 21 (20.59%) Administrator
3 19 (18.63%) Linux Administrator
4 17 (16.67%) Systems Administrator
5 16 (15.69%) Linux Systems Administrator
6 15 (14.71%) Architect
7 9 (8.82%) Unix Administrator
8 8 (7.84%) AWS DevOps
8 8 (7.84%) AWS DevOps Engineer
8 8 (7.84%) AWS Engineer
8 8 (7.84%) Developer
8 8 (7.84%) Linux Engineer
8 8 (7.84%) Unix Linux Systems Administrator
8 8 (7.84%) Unix Systems Administrator
9 6 (5.88%) Kubernetes Engineer
10 5 (4.90%) Linux DevOps Engineer
10 5 (4.90%) Linux/Unix DevOps
10 5 (4.90%) Software Developer
11 4 (3.92%) HTML Developer
11 4 (3.92%) SQL Developer
Libraries, Frameworks & Software Standards
1 15 (14.71%) Elastic Stack
2 13 (12.75%) LDAP
3 11 (10.78%) Kafka
4 8 (7.84%) HTML
4 8 (7.84%) Node.js
5 7 (6.86%) AngularJS
5 7 (6.86%) HTML5
5 7 (6.86%) SOAP
6 6 (5.88%) JSON
6 6 (5.88%) React
6 6 (5.88%) Web Services
6 6 (5.88%) XML
7 5 (4.90%) jQuery
7 5 (4.90%) LAPP Stack
7 5 (4.90%) Natural Language Processing
7 5 (4.90%) RESTful
7 5 (4.90%) Sensu
7 5 (4.90%) SignalR
7 5 (4.90%) WebSockets
8 4 (3.92%) RabbitMQ
Miscellaneous
1 7 (6.86%) PKI
2 6 (5.88%) Data Centre
2 6 (5.88%) Management Information System
3 5 (4.90%) Mobile App
3 5 (4.90%) Self-Motivation
3 5 (4.90%) Video on Demand
4 3 (2.94%) Computer Science
4 3 (2.94%) Linux Command Line
4 3 (2.94%) Public Cloud
5 2 (1.96%) CMDB
5 2 (1.96%) Distributed Denial-of-Service
6 1 (0.98%) BBC
6 1 (0.98%) CESG
6 1 (0.98%) Fat Client
6 1 (0.98%) Hybrid Cloud
6 1 (0.98%) Life Science
6 1 (0.98%) Private Cloud
6 1 (0.98%) Thin Client
Operating Systems
1 102 (100.00%) Linux
2 56 (54.90%) Red Hat Enterprise Linux
3 36 (35.29%) Windows
4 25 (24.51%) Unix
5 21 (20.59%) Ubuntu
6 8 (7.84%) Solaris
7 7 (6.86%) SUSE
8 6 (5.88%) Windows Server
9 5 (4.90%) FreeBSD
10 4 (3.92%) Windows 10
11 3 (2.94%) Debian
11 3 (2.94%) Windows Server 2008
11 3 (2.94%) Windows Server 2012
12 2 (1.96%) Amazon Linux
12 2 (1.96%) Fedora
12 2 (1.96%) Windows 7
13 1 (0.98%) DC/OS
13 1 (0.98%) HPUX
Processes & Methodologies
1 38 (37.25%) Configuration Management
2 30 (29.41%) DevOps
3 19 (18.63%) Agile Software Development
4 15 (14.71%) ITIL
5 12 (11.76%) Runbook
6 11 (10.78%) Service Management
7 10 (9.80%) Analytics
7 10 (9.80%) Disaster Recovery
7 10 (9.80%) ERP
7 10 (9.80%) Virtual Infrastructure
8 9 (8.82%) Scrum
9 8 (7.84%) High Availability
9 8 (7.84%) Machine Learning
9 8 (7.84%) Problem-Solving
10 7 (6.86%) Open Source
11 6 (5.88%) Continuous Integration
11 6 (5.88%) Critical Thinking
11 6 (5.88%) Migration
12 5 (4.90%) Collaborative Working
12 5 (4.90%) Conversational UI
Programming Languages
1 35 (34.31%) Python
2 28 (27.45%) Shell Script
3 24 (23.53%) Bash Shell
4 19 (18.63%) Perl
5 18 (17.65%) PowerShell
6 13 (12.75%) SQL
7 10 (9.80%) JavaScript
8 9 (8.82%) Java
9 6 (5.88%) PHP
9 6 (5.88%) Ruby
10 5 (4.90%) R
11 4 (3.92%) AWK
11 4 (3.92%) Bourne shell
11 4 (3.92%) Korn
12 2 (1.96%) Go
12 2 (1.96%) Groovy
13 1 (0.98%) C++
13 1 (0.98%) VB
13 1 (0.98%) VBScript
Qualifications
1 34 (33.33%) Security Cleared
2 29 (28.43%) SC Cleared
3 5 (4.90%) DV Cleared
4 3 (2.94%) Degree
4 3 (2.94%) OCA
4 3 (2.94%) OCP
4 3 (2.94%) Oracle Certification
4 3 (2.94%) RHCE
4 3 (2.94%) RHCSA
5 2 (1.96%) BPSS Clearance
5 2 (1.96%) Cisco Certification
6 1 (0.98%) CCNA
6 1 (0.98%) CISM
6 1 (0.98%) CISSP
6 1 (0.98%) MCSE
6 1 (0.98%) Microsoft Certification
Quality Assurance & Compliance
1 2 (1.96%) COBIT
1 2 (1.96%) ISO/IEC 27001
1 2 (1.96%) Sarbanes-Oxley
1 2 (1.96%) SLA
2 1 (0.98%) Government Security Classifications
2 1 (0.98%) JSP 440
System Software
1 27 (26.47%) Docker
2 16 (15.69%) Virtual Machines
2 16 (15.69%) VMware Infrastructure
3 15 (14.71%) Active Directory
4 7 (6.86%) iptables
5 5 (4.90%) KVM
5 5 (4.90%) Postfix
5 5 (4.90%) Varnish
5 5 (4.90%) Xen
6 4 (3.92%) GlusterFS
6 4 (3.92%) Veritas Cluster Server
6 4 (3.92%) VMware ESXi
7 3 (2.94%) Hyper-V
8 2 (1.96%) Btrfs
8 2 (1.96%) NFS
8 2 (1.96%) VirtualBox
8 2 (1.96%) vSphere
8 2 (1.96%) XenDesktop
9 1 (0.98%) HDFS
9 1 (0.98%) VMware Workstation
Systems Management
1 56 (54.90%) Puppet
2 45 (44.12%) Ansible
3 21 (20.59%) Opscode Chef
4 17 (16.67%) Terraform
5 14 (13.73%) Kubernetes
5 14 (13.73%) Nagios
6 13 (12.75%) Packer
7 7 (6.86%) Kibana
7 7 (6.86%) SELinux
8 6 (5.88%) Consul
8 6 (5.88%) Grafana
8 6 (5.88%) Oracle ZFS
8 6 (5.88%) yum
9 5 (4.90%) Cacti
9 5 (4.90%) logstash
9 5 (4.90%) Prometheus
10 4 (3.92%) Red Hat Satellite
10 4 (3.92%) Red Hat Spacewalk
10 4 (3.92%) Uchiwa
10 4 (3.92%) Veritas Storage Foundation
Vendors
1 46 (45.10%) Red Hat
2 31 (30.39%) Microsoft
3 23 (22.55%) VMware
4 13 (12.75%) Oracle
5 10 (9.80%) HP
6 8 (7.84%) Citrix
7 7 (6.86%) ServiceNow
7 7 (6.86%) Splunk
8 5 (4.90%) Cisco
8 5 (4.90%) Google
8 5 (4.90%) Juniper
8 5 (4.90%) SaltStack
8 5 (4.90%) Thales
9 4 (3.92%) Brocade
9 4 (3.92%) Centrify
9 4 (3.92%) EMC
9 4 (3.92%) StorageTek
9 4 (3.92%) Sun
9 4 (3.92%) Veritas
10 3 (2.94%) Tekelec