Period
to 17 November 2017

The following table provides summary statistics for permanent job vacancies advertised in Bristol with a requirement for CentOS skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited CentOS over the 6 months to 17 November 2017 with a comparison to the same period in the previous 2 years.

CentOS Linux
South West > Bristol
6 months to
17 Nov 2017
Same period 2016 Same period 2015
Rank 175 169 169
Rank change year-on-year -6 0 -12
Permanent jobs citing CentOS 29 13 34
As % of all permanent IT jobs advertised in Bristol 0.75% 0.40% 0.89%
As % of the Operating Systems category 3.03% 1.98% 3.16%
Number of salaries quoted 29 10 34
Bristol median annual salary £40,000 £62,500 £37,500
Median salary % change year-on-year -36.00% +66.67% -
10th Percentile £33,750 £33,850 £28,625
90th Percentile £45,000 £86,250 £75,000
South West median annual salary £40,000 £38,750 £45,000
% change year-on-year +3.23% -13.89% +8.43%

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

All Operating Systems
Bristol
Permanent vacancies with a requirement for operating system skills 957 655 1075
As % of all permanent IT jobs advertised in Bristol 24.79% 20.30% 28.24%
Number of salaries quoted 777 572 992
Bristol median annual salary £42,500 £37,500 £40,000
Median salary % change year-on-year +13.33% -6.25% +6.67%
10th Percentile £25,800 £21,500 £24,025
90th Percentile £65,000 £63,750 £71,250
South West median annual salary £40,000 £35,000 £37,500
% change year-on-year +14.29% -6.67% +7.14%

CentOS
Job Vacancy Trend in Bristol

Job postings citing CentOS as a percentage of all IT jobs advertised in Bristol.

Job vacancy trend for CentOS in Bristol

CentOS
Salary Trend in Bristol

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

Salary trend for CentOS in Bristol

CentOS
Salary Histogram in Bristol

The salary distribution of IT jobs citing CentOS in Bristol over the 6 months to 17 November 2017.

Salary histogram for CentOS in Bristol

For the 6 months to 17 November 2017, IT jobs citing CentOS 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 Bristol region with a requirement for CentOS.

1 29 (100.00%) Linux
2 22 (75.86%) Red Hat
3 21 (72.41%) Windows
4 17 (58.62%) Windows Server
5 16 (55.17%) Active Directory
6 13 (44.83%) VMware
7 12 (41.38%) Firewall
8 11 (37.93%) Cisco
8 11 (37.93%) ITIL
8 11 (37.93%) Windows Server 2008
8 11 (37.93%) Windows Server 2012
9 10 (34.48%) Red Hat Enterprise Linux
9 10 (34.48%) VMware Certified Professional (VCP)
9 10 (34.48%) Cisco ASA
9 10 (34.48%) NAS
9 10 (34.48%) AIX
9 10 (34.48%) CCNA
9 10 (34.48%) Cisco Certification
9 10 (34.48%) SAN
9 10 (34.48%) Shell Script
9 10 (34.48%) Project Management
10 7 (24.14%) Samba
10 7 (24.14%) NFS
10 7 (24.14%) Apache
11 6 (20.69%) Photoshop
11 6 (20.69%) PHP
11 6 (20.69%) LAMP
11 6 (20.69%) Agile Software Development
11 6 (20.69%) Maya
11 6 (20.69%) Houdini

CentOS
Co-occurring IT Skills in Bristol 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 7 (24.14%) Apache
2 2 (6.90%) IIS
3 1 (3.45%) Confluence
Applications
1 6 (20.69%) Houdini
1 6 (20.69%) Maya
1 6 (20.69%) NUKE
1 6 (20.69%) Photoshop
Cloud Services
1 3 (10.34%) Amazon AWS
2 1 (3.45%) AWS CloudFormation
2 1 (3.45%) IaaS
2 1 (3.45%) Microsoft Azure
2 1 (3.45%) PaaS
Communications & Networking
1 12 (41.38%) Firewall
2 10 (34.48%) Cisco ASA
2 10 (34.48%) NAS
2 10 (34.48%) SAN
3 5 (17.24%) LAN
3 5 (17.24%) WAN
4 2 (6.90%) SMS
5 1 (3.45%) IP Telephony
5 1 (3.45%) OpenVPN
5 1 (3.45%) Unified Communications
5 1 (3.45%) VoIP
5 1 (3.45%) VPN
Database & Business Intelligence
1 5 (17.24%) MySQL
2 2 (6.90%) SQL Server
3 1 (3.45%) MongoDB
3 1 (3.45%) PostgreSQL
Development Applications
1 1 (3.45%) Jenkins
General
1 2 (6.90%) Games
Job Titles
1 11 (37.93%) Linux Support
2 9 (31.03%) Analyst
3 8 (27.59%) 3rd Line Support
3 8 (27.59%) 3rd Line Support Analyst
3 8 (27.59%) Customer Analyst
3 8 (27.59%) Support Analyst
4 7 (24.14%) Wintel Analyst
4 7 (24.14%) Wintel Support
4 7 (24.14%) Wintel Support Analyst
5 5 (17.24%) Developer
5 5 (17.24%) Linux Engineer
5 5 (17.24%) PHP Developer
5 5 (17.24%) Senior Developer
5 5 (17.24%) Senior PHP Developer
5 5 (17.24%) Windows Engineer
6 4 (13.79%) Support Engineer
7 3 (10.34%) Administrator
7 3 (10.34%) Linux Support Engineer
7 3 (10.34%) Systems Administrator
7 3 (10.34%) Windows Support Engineer
Libraries, Frameworks & Software Standards
1 6 (20.69%) LAMP
2 5 (17.24%) CSS
2 5 (17.24%) HTML
3 3 (10.34%) Web Services
4 2 (6.90%) .NET
5 1 (3.45%) LAPP Stack
5 1 (3.45%) Loki
Miscellaneous
1 6 (20.69%) Animation
2 5 (17.24%) Analytical Skills
2 5 (17.24%) Greenfield Project
3 1 (3.45%) Computer Science
3 1 (3.45%) Linux Command Line
3 1 (3.45%) Wiki
Operating Systems
1 29 (100.00%) Linux
2 21 (72.41%) Windows
3 17 (58.62%) Windows Server
4 11 (37.93%) Windows Server 2008
4 11 (37.93%) Windows Server 2012
5 10 (34.48%) AIX
5 10 (34.48%) Red Hat Enterprise Linux
6 6 (20.69%) Windows 7
7 3 (10.34%) Ubuntu
8 1 (3.45%) Debian
8 1 (3.45%) Mac OS X
Processes & Methodologies
1 11 (37.93%) ITIL
2 10 (34.48%) Project Management
3 6 (20.69%) Agile Software Development
3 6 (20.69%) Security Monitoring
4 5 (17.24%) 3D Animation
4 5 (17.24%) 3D Rendering
4 5 (17.24%) API Development
4 5 (17.24%) Visual Effects
5 4 (13.79%) DevOps
6 2 (6.90%) Configuration Management
6 2 (6.90%) Dashboard Development
7 1 (3.45%) Continuous Delivery
Programming Languages
1 10 (34.48%) Shell Script
2 6 (20.69%) PHP
3 5 (17.24%) JavaScript
4 2 (6.90%) Bash Shell
4 2 (6.90%) C#
4 2 (6.90%) Perl
4 2 (6.90%) PowerShell
4 2 (6.90%) Python
5 1 (3.45%) SQL
Qualifications
1 10 (34.48%) CCNA
1 10 (34.48%) Cisco Certification
1 10 (34.48%) VMware Certified Professional (VCP)
2 1 (3.45%) AWS Certification
2 1 (3.45%) Degree
2 1 (3.45%) SC Cleared
2 1 (3.45%) Security Cleared
Quality Assurance & Compliance
1 1 (3.45%) SLA
System Software
1 16 (55.17%) Active Directory
2 7 (24.14%) NFS
2 7 (24.14%) Samba
3 5 (17.24%) Firmware
4 2 (6.90%) VMware Infrastructure
5 1 (3.45%) RHEV
Systems Management
1 2 (6.90%) Ansible
1 2 (6.90%) Nagios
1 2 (6.90%) Puppet
2 1 (3.45%) Cobbler
2 1 (3.45%) Terraform
2 1 (3.45%) ZABBIX
Vendors
1 22 (75.86%) Red Hat
2 13 (44.83%) VMware
3 11 (37.93%) Cisco
4 1 (3.45%) BroadSoft
4 1 (3.45%) Oracle
4 1 (3.45%) Polycom
4 1 (3.45%) SolarWinds
4 1 (3.45%) Sonus
4 1 (3.45%) Yealink