CentOS Contract Job Trends

CentOS Linux
UK

The table below provides summary statistics and contractor rates for jobs requiring CentOS skills. It covers contract job vacancies from the 6 months leading up to 1 December 2025, with comparisons to the same periods in the previous two years.

6 months to
1 Dec 2025
Same period 2024 Same period 2023
Rank 523 450 504
Rank change year-on-year -73 +54 +84
Contract jobs citing CentOS 56 109 114
As % of all contract jobs in the UK 0.16% 0.30% 0.25%
As % of the Operating Systems category 1.18% 2.16% 1.65%
Number of daily rates quoted 34 59 80
10th Percentile £383 £352 £399
25th Percentile £525 £450 £429
Median daily rate (50th Percentile) £550 £575 £550
Median % change year-on-year -4.35% +4.55% -12.00%
75th Percentile £625 £675 £600
90th Percentile £660 £750 £644
UK excluding London median daily rate £550 £575 £550
% change year-on-year -4.35% +4.55% -8.33%
Number of hourly rates quoted 0 3 1
10th Percentile - £69.91 -
25th Percentile - £85.70 £21.25
Median hourly rate - £112.00 £22.50
Median % change year-on-year - +397.78% -63.41%
75th Percentile - - £23.75
90th Percentile - - -
UK excluding London median hourly rate - £63.79 £22.50
% change year-on-year - +183.49% -62.50%

All Operating Systems
UK

CentOS falls under the Operating Systems category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring operating system skills.

Contract vacancies with a requirement for operating system skills 4,728 5,052 6,895
As % of all contract IT jobs advertised in the UK 13.23% 14.04% 15.10%
Number of daily rates quoted 3,049 3,083 4,692
10th Percentile £180 £200 £182
25th Percentile £263 £325 £300
Median daily rate (50th Percentile) £450 £475 £475
Median % change year-on-year -5.26% - -7.05%
75th Percentile £563 £583 £607
90th Percentile £660 £688 £700
UK excluding London median daily rate £400 £440 £440
% change year-on-year -9.09% - -2.22%
Number of hourly rates quoted 366 206 345
10th Percentile £15.50 £16.13 £14.66
25th Percentile £18.87 £22.50 £18.00
Median hourly rate £25.00 £50.00 £30.00
Median % change year-on-year -50.00% +66.67% +20.00%
75th Percentile £55.58 £67.50 £65.00
90th Percentile £67.84 £70.00 £73.75
UK excluding London median hourly rate £25.00 £51.25 £27.25
% change year-on-year -51.22% +88.07% +21.11%

CentOS
Job Vacancy Trend

Historical trend showing the proportion of contract IT job postings citing CentOS relative to all contract IT jobs advertised.

CentOS job vacancy trend in the UK

CentOS
Daily Rate Trend

Contractor daily rate distribution trend for jobs in the UK citing CentOS.

Contractor daily rate distribution trend for jobs in the UK citing CentOS

CentOS
Daily Rate Histogram

Daily rate distribution for jobs citing CentOS over the 6 months to 1 December 2025.

Daily rate histogram for CentOS in the UK

CentOS
Hourly Rate Trend

Contractor hourly rate distribution trend for jobs in the UK citing CentOS.

Contractor hourly rate distribution trend for jobs in the UK citing CentOS

CentOS
Top 11 Contract Job Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the UK over the 6 months to 1 December 2025. 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
Jobs
England -72 54 £550 -4.35% 14
UK excluding London -99 27 £550 -4.35% 15
London +11 18 £563 +8.70% 2
Work from Home -16 12 £511 -3.99% 6
South West -1 8 £550 +4.76% 4
South East -40 7 £550 -4.35% 7
East of England - 6 £483 -
West Midlands -30 4 £540 +45.95% 2
Midlands -40 4 £540 +45.95% 3
Yorkshire -47 2 £365 -49.66%
North of England -62 2 £365 -49.66%

CentOS
Co-Occurring Skills & Capabilities by Category

The following tables expand on the one above by listing co-occurrences grouped by category. They cover the same employment type, locality and period, with up to 20 co-occurrences shown in each category:

Application Platforms
1 9 (16.07%) Apache
2 3 (5.36%) Microsoft Exchange
2 3 (5.36%) Tomcat
3 2 (3.57%) Confluence
3 2 (3.57%) OpenStack
3 2 (3.57%) Oracle HTTP Server
3 2 (3.57%) WebLogic
4 1 (1.79%) SharePoint
Applications
1 3 (5.36%) Microsoft Office
Business Applications
1 1 (1.79%) Remedy ITSM
Cloud Services
1 23 (41.07%) AWS
2 10 (17.86%) GCP
3 9 (16.07%) Azure
4 7 (12.50%) Amazon ECS
4 7 (12.50%) AWS CloudFormation
4 7 (12.50%) AWS Fargate
4 7 (12.50%) Entra ID
4 7 (12.50%) Virtual Private Cloud
5 6 (10.71%) OpenShift
6 5 (8.93%) GitHub
6 5 (8.93%) npm
7 1 (1.79%) Amazon S3
7 1 (1.79%) Cloud Computing
7 1 (1.79%) IaaS
7 1 (1.79%) IBM Cloud
7 1 (1.79%) Microsoft 365
7 1 (1.79%) OCI
Communications & Networking
1 18 (32.14%) DNS
2 9 (16.07%) Firewall
3 8 (14.29%) DHCP
4 6 (10.71%) TCP/IP
5 5 (8.93%) AMQP
5 5 (8.93%) SAN
5 5 (8.93%) VPN
6 4 (7.14%) DKIM
6 4 (7.14%) DMARC
6 4 (7.14%) SMTP
7 3 (5.36%) NAS
7 3 (5.36%) Skype
7 3 (5.36%) VLAN
8 2 (3.57%) BGP
8 2 (3.57%) Ethernet VPN
8 2 (3.57%) HTTP
8 2 (3.57%) MPLS
8 2 (3.57%) SSL
9 1 (1.79%) VSAN
9 1 (1.79%) VXLAN
Database & Business Intelligence
1 9 (16.07%) MongoDB
2 6 (10.71%) RDBMS
2 6 (10.71%) Relational Database
3 4 (7.14%) Amazon RDS
3 4 (7.14%) MySQL
4 3 (5.36%) Elasticsearch
4 3 (5.36%) MariaDB
5 2 (3.57%) InfluxDB
5 2 (3.57%) NoSQL
Development Applications
1 12 (21.43%) Jenkins
2 10 (17.86%) GitLab
3 8 (14.29%) Git
4 6 (10.71%) JIRA
5 5 (8.93%) Maven
6 4 (7.14%) Terragrunt
7 3 (5.36%) Vagrant
8 2 (3.57%) Bitbucket
8 2 (3.57%) MSI
8 2 (3.57%) Robot Framework
8 2 (3.57%) Sonatype Nexus
9 1 (1.79%) Postman
9 1 (1.79%) TeamCity
General
1 13 (23.21%) Social Skills
2 9 (16.07%) Analytical Skills
2 9 (16.07%) Finance
3 5 (8.93%) Financial Institution
4 4 (7.14%) Public Sector
5 1 (1.79%) Billing
5 1 (1.79%) Documentation Skills
5 1 (1.79%) Inclusion and Diversity
5 1 (1.79%) Telecoms
Job Titles
1 8 (14.29%) DevOps Engineer
2 7 (12.50%) Administrator
2 7 (12.50%) Developer
3 6 (10.71%) Lead
3 6 (10.71%) Lead DevOps
3 6 (10.71%) Lead DevOps Engineer
3 6 (10.71%) Linux Engineer
4 5 (8.93%) Senior
4 5 (8.93%) Support Engineer
4 5 (8.93%) Wintel Engineer
5 4 (7.14%) Infrastructure Engineer
5 4 (7.14%) Linux Administrator
5 4 (7.14%) Systems Administrator
6 3 (5.36%) Applications Support
6 3 (5.36%) Applications Support Engineer
6 3 (5.36%) Consultant
6 3 (5.36%) Infrastructure Consultant
6 3 (5.36%) Integration Engineer
6 3 (5.36%) Linux Specialist
6 3 (5.36%) Linux Systems Administrator
Libraries, Frameworks & Software Standards
1 8 (14.29%) Keycloak
2 7 (12.50%) cloud-init
2 7 (12.50%) Kafka
3 5 (8.93%) LDAP
4 4 (7.14%) AWS CDK
4 4 (7.14%) Node.js
4 4 (7.14%) React
5 3 (5.36%) AngularJS
5 3 (5.36%) CSS
5 3 (5.36%) Electron
5 3 (5.36%) HTML
5 3 (5.36%) JNI
5 3 (5.36%) LAMP
5 3 (5.36%) REST
6 2 (3.57%) JSON
6 2 (3.57%) Middleware
6 2 (3.57%) SOAP
6 2 (3.57%) XML
6 2 (3.57%) YAML
6 2 (3.57%) Zend Framework
Miscellaneous
1 12 (21.43%) PKI
2 7 (12.50%) Data Centre
3 6 (10.71%) Hedge funds
4 5 (8.93%) Legacy Applications
5 4 (7.14%) Enterprise Storage
6 3 (5.36%) Cloud Native
6 3 (5.36%) Linux Command Line
6 3 (5.36%) SCADA
7 2 (3.57%) Onboarding
8 1 (1.79%) Client/Server
8 1 (1.79%) CUDA
8 1 (1.79%) Data Protection Act
8 1 (1.79%) Distributed Systems
8 1 (1.79%) Eurex
8 1 (1.79%) Hybrid Cloud
8 1 (1.79%) Private Cloud
8 1 (1.79%) Public Cloud
8 1 (1.79%) SWIFT Messaging Network
Operating Systems
1 56 (100.00%) Linux
2 39 (69.64%) Red Hat Enterprise Linux
3 23 (41.07%) Ubuntu
4 18 (32.14%) Windows
5 17 (30.36%) Unix
6 15 (26.79%) Windows Server
7 4 (7.14%) Mac OS
7 4 (7.14%) Oracle Linux
7 4 (7.14%) Windows Server 2019
8 3 (5.36%) Debian
8 3 (5.36%) Windows 10
8 3 (5.36%) Windows Server 2012
9 1 (1.79%) SUSE
9 1 (1.79%) Windows Server 2003
9 1 (1.79%) Windows Server 2016
Processes & Methodologies
1 24 (42.86%) CI/CD
2 19 (33.93%) DevOps
3 17 (30.36%) Containerisation
4 14 (25.00%) Infrastructure as Code
5 13 (23.21%) High Availability
6 12 (21.43%) Problem-Solving
7 10 (17.86%) Agile
7 10 (17.86%) Configuration Management
8 9 (16.07%) Observability
9 8 (14.29%) Load Balancing
9 8 (14.29%) Root Cause Analysis
9 8 (14.29%) Task Automation
9 8 (14.29%) Test Automation
10 7 (12.50%) Continuous Improvement
10 7 (12.50%) ITIL
10 7 (12.50%) Microservices
11 6 (10.71%) Continuous Integration
11 6 (10.71%) Incident Response
11 6 (10.71%) Infrastructure Engineering
12 5 (8.93%) Disaster Recovery
Programming Languages
1 35 (62.50%) Python
2 31 (55.36%) Bash
3 13 (23.21%) PowerShell
4 12 (21.43%) Shell Script
5 10 (17.86%) Java
6 9 (16.07%) Go
7 7 (12.50%) Perl
8 6 (10.71%) JavaScript
8 6 (10.71%) SQL
9 5 (8.93%) C
10 4 (7.14%) PHP
11 1 (1.79%) C#
11 1 (1.79%) Ruby
Qualifications
1 21 (37.50%) Security Cleared
2 12 (21.43%) SC Cleared
3 9 (16.07%) DV Cleared
4 7 (12.50%) RHCE
5 5 (8.93%) RHCSA
6 4 (7.14%) Degree
7 3 (5.36%) AWS Certification
7 3 (5.36%) MCSE
7 3 (5.36%) Microsoft Certification
8 2 (3.57%) AWS Certified Solutions Architect
9 1 (1.79%) BPSS Clearance
Quality Assurance & Compliance
1 7 (12.50%) NCSC
2 4 (7.14%) QA
3 2 (3.57%) PCI DSS
4 1 (1.79%) ISO/IEC 27001
4 1 (1.79%) NIST
System Software
1 17 (30.36%) Docker
2 14 (25.00%) VMware Infrastructure
3 12 (21.43%) Active Directory
4 5 (8.93%) KVM
5 4 (7.14%) Hyper-V
5 4 (7.14%) Postfix
6 2 (3.57%) VirtualBox
7 1 (1.79%) Ceph
7 1 (1.79%) Firmware
7 1 (1.79%) QEMU
7 1 (1.79%) Veritas Cluster Server
7 1 (1.79%) vSphere
Systems Management
1 28 (50.00%) Ansible
2 20 (35.71%) Terraform
3 18 (32.14%) Kubernetes
4 10 (17.86%) Grafana
5 9 (16.07%) Progress Chef
5 9 (16.07%) Puppet
6 8 (14.29%) Prometheus
7 7 (12.50%) Jamf Pro
7 7 (12.50%) Packer
8 5 (8.93%) Nagios
9 3 (5.36%) Salt
9 3 (5.36%) WSUS
10 2 (3.57%) Icinga
10 2 (3.57%) Red Hat Satellite
10 2 (3.57%) WMI
11 1 (1.79%) Argo
11 1 (1.79%) HAProxy
11 1 (1.79%) Kibana
11 1 (1.79%) Nessus
11 1 (1.79%) SCCM
Vendors
1 21 (37.50%) Red Hat
2 17 (30.36%) VMware
3 15 (26.79%) Oracle
4 10 (17.86%) Splunk
5 8 (14.29%) Microsoft
6 7 (12.50%) Okta
7 5 (8.93%) Cisco
8 3 (5.36%) Rackspace
9 2 (3.57%) New Relic
9 2 (3.57%) ServiceNow
9 2 (3.57%) Zend
10 1 (1.79%) Bloomberg
10 1 (1.79%) Dell
10 1 (1.79%) Dialogic
10 1 (1.79%) Foundry
10 1 (1.79%) HP
10 1 (1.79%) IBM
10 1 (1.79%) Qualys
10 1 (1.79%) Remedy
10 1 (1.79%) Vertica