High Availability Contract Job Trends in London

High Availability
England > London

The table below provides summary statistics and contractor rates for jobs advertised in London requiring High Availability skills. It covers vacancies from the 6 months leading up to 18 September 2025, with comparisons to the same periods in the previous two years.

6 months to
18 Sep 2025
Same period 2024 Same period 2023
Rank 144 206 206
Rank change year-on-year +62 0 +60
Contract jobs citing High Availability 255 191 261
As % of all contract jobs advertised in London 1.90% 1.17% 1.20%
As % of the Processes & Methodologies category 2.05% 1.31% 1.33%
Number of daily rates quoted 181 129 189
10th Percentile £419 £261 £395
25th Percentile £463 £413 £500
Median daily rate (50th Percentile) £600 £550 £600
Median % change year-on-year +9.09% -8.33% -
75th Percentile £700 £638 £688
90th Percentile £775 £730 £700
England median daily rate £550 £525 £550
% change year-on-year +4.76% -4.55% -4.35%
Number of hourly rates quoted 5 7 3
10th Percentile - £22.26 £59.81
25th Percentile £26.00 - £67.03
Median hourly rate £26.45 £23.80 £82.81
Median % change year-on-year +11.13% -71.26% +246.34%
75th Percentile - - £88.28
90th Percentile £27.38 £54.28 £89.31
England median hourly rate £26.45 £42.90 £63.00
% change year-on-year -38.34% -31.90% +163.49%

All Process and Methodology Skills
London

High Availability falls under the Processes and Methodologies category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring process or methodology skills in London.

Contract vacancies with a requirement for process or methodology skills 12,450 14,539 19,681
As % of all contract IT jobs advertised in London 92.59% 89.26% 90.43%
Number of daily rates quoted 8,239 9,698 14,258
10th Percentile £325 £350 £363
25th Percentile £425 £450 £463
Median daily rate (50th Percentile) £540 £550 £575
Median % change year-on-year -1.82% -4.35% -0.86%
75th Percentile £675 £675 £695
90th Percentile £775 £800 £800
England median daily rate £510 £525 £550
% change year-on-year -2.86% -4.55% -
Number of hourly rates quoted 252 180 225
10th Percentile £17.01 £17.25 £18.07
25th Percentile £25.00 £23.80 £21.50
Median hourly rate £31.75 £35.00 £39.42
Median % change year-on-year -9.29% -11.21% +8.00%
75th Percentile £48.94 £55.00 £63.75
90th Percentile £63.75 £72.19 £77.00
England median hourly rate £25.15 £43.00 £43.90
% change year-on-year -41.51% -2.05% +51.38%

High Availability
Job Vacancy Trend in London

Job postings citing High Availability as a proportion of all IT jobs advertised in London.

Job vacancy trend for High Availability in London

High Availability
Daily Rate Trend in London

Contractor daily rate distribution trend for jobs in London citing High Availability.

Contractor daily rate distribution trend for jobs in London citing High Availability

High Availability
Daily Rate Histogram in London

Daily rate distribution for jobs citing High Availability in London over the 6 months to 18 September 2025.

Daily rate histogram for High Availability in London

High Availability
Hourly Rate Trend in London

Contractor hourly rate distribution trend for jobs in London citing High Availability.

Contractor hourly rate distribution trend for jobs in London citing High Availability

High Availability
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing High Availability within the London region over the 6 months to 18 September 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
Central London +18 37 £650 +13.04% 23
South London - 9 £625 -
West London -2 8 £750 +61.29% 2
East London +9 4 £294 +32.81%
High Availability
England

High Availability
Co-occurring Skills and Capabilities in London by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 7 (2.75%) Microsoft Exchange
2 5 (1.96%) Apache
2 5 (1.96%) Apache Spark
3 3 (1.18%) CICS
4 2 (0.78%) CMS
4 2 (0.78%) Headless CMS
4 2 (0.78%) nginx
4 2 (0.78%) Oracle HTTP Server
4 2 (0.78%) SAS
4 2 (0.78%) Tomcat
4 2 (0.78%) WebLogic
5 1 (0.39%) Apache Airflow
5 1 (0.39%) Confluence
5 1 (0.39%) Drupal
5 1 (0.39%) SharePoint
5 1 (0.39%) WordPress
Applications
1 2 (0.78%) Microsoft Excel
1 2 (0.78%) Microsoft Office
2 1 (0.39%) Chatbot
2 1 (0.39%) Microsoft PowerPoint
Business Applications
1 8 (3.14%) SAP S/4HANA
2 1 (0.39%) BASE24
2 1 (0.39%) Eikon
2 1 (0.39%) Eze OMS
2 1 (0.39%) Fidessa
2 1 (0.39%) SAP MDG
Cloud Services
1 85 (33.33%) AWS
2 67 (26.27%) Azure
3 34 (13.33%) Amazon S3
4 33 (12.94%) AWS CloudFormation
5 31 (12.16%) Serverless
6 28 (10.98%) AWS Lambda
7 23 (9.02%) GCP
8 22 (8.63%) Amazon EKS
9 20 (7.84%) GitHub
10 19 (7.45%) Amazon CloudWatch
11 17 (6.67%) Virtual Private Cloud
12 13 (5.10%) Amazon EC2
13 10 (3.92%) Azure DevOps
14 9 (3.53%) Entra ID
14 9 (3.53%) Microsoft 365
15 8 (3.14%) Amazon ELB
15 8 (3.14%) GitHub Actions
15 8 (3.14%) PaaS
16 7 (2.75%) Akamai
16 7 (2.75%) Azure Monitor
Communications & Networking
1 41 (16.08%) Firewall
2 40 (15.69%) DNS
3 34 (13.33%) TCP/IP
4 29 (11.37%) VPN
5 19 (7.45%) DHCP
5 19 (7.45%) Network Security
6 15 (5.88%) WAN
7 14 (5.49%) SSL
8 13 (5.10%) Multicast
8 13 (5.10%) Wireshark
9 11 (4.31%) 4G
9 11 (4.31%) BGP
9 11 (4.31%) OSPF
10 10 (3.92%) HTTP
10 10 (3.92%) LAN
11 8 (3.14%) Cisco Nexus
12 7 (2.75%) Cisco ISE
12 7 (2.75%) F5 BIG-IP LTM
12 7 (2.75%) SNMP
13 6 (2.35%) Wireless
Database & Business Intelligence
1 22 (8.63%) Amazon RDS
2 17 (6.67%) NoSQL
2 17 (6.67%) PostgreSQL
3 16 (6.27%) Relational Database
4 15 (5.88%) SQL Server
5 7 (2.75%) MongoDB
6 6 (2.35%) Azure SQL Database
6 6 (2.35%) Elasticsearch
6 6 (2.35%) Oracle Database
7 5 (1.96%) DB2
8 4 (1.57%) MySQL
8 4 (1.57%) Oracle Database 11g
8 4 (1.57%) RDBMS
9 3 (1.18%) Big Data
9 3 (1.18%) Data Warehouse
9 3 (1.18%) DynamoDB
9 3 (1.18%) Hadoop
10 2 (0.78%) Apache Cassandra
10 2 (0.78%) SAP BW
10 2 (0.78%) SAP HANA
Development Applications
1 31 (12.16%) Jenkins
2 22 (8.63%) Git
3 17 (6.67%) GitLab
4 7 (2.75%) GCC
4 7 (2.75%) GDB
4 7 (2.75%) TeamCity
5 6 (2.35%) Sonatype Nexus
6 4 (1.57%) Gradle
6 4 (1.57%) JIRA
6 4 (1.57%) Robot Framework
6 4 (1.57%) SonarQube
6 4 (1.57%) Subversion
7 3 (1.18%) Artifactory
7 3 (1.18%) Atlassian Bamboo
7 3 (1.18%) Bitbucket
7 3 (1.18%) Cypress.io
7 3 (1.18%) Maven
8 2 (0.78%) Cucumber
8 2 (0.78%) git-flow
8 2 (0.78%) JUnit
General
1 88 (34.51%) Social Skills
2 62 (24.31%) Finance
3 43 (16.86%) Analytical Skills
4 30 (11.76%) Public Sector
5 26 (10.20%) Banking
6 15 (5.88%) Front Office
7 11 (4.31%) Telecoms
8 7 (2.75%) Financial Institution
8 7 (2.75%) Inclusion and Diversity
9 6 (2.35%) International Banking
9 6 (2.35%) Investment Banking
10 4 (1.57%) Influencing Skills
11 3 (1.18%) Digital Healthcare
11 3 (1.18%) French Language
11 3 (1.18%) Law
11 3 (1.18%) Legal
11 3 (1.18%) Local Government
11 3 (1.18%) Military
11 3 (1.18%) Organisational Skills
11 3 (1.18%) Retail
Job Titles
1 42 (16.47%) Senior
2 36 (14.12%) Architect
3 32 (12.55%) Developer
4 22 (8.63%) DevOps Engineer
5 20 (7.84%) Infrastructure Engineer
6 16 (6.27%) AWS Architect
7 14 (5.49%) Lead
7 14 (5.49%) Network Engineer
8 12 (4.71%) DBA
9 10 (3.92%) Administrator
9 10 (3.92%) Platform Engineer
9 10 (3.92%) Senior Infrastructure Engineer
10 9 (3.53%) Senior DevOps
10 9 (3.53%) Site Reliability Engineer
11 8 (3.14%) Cloud Engineer
11 8 (3.14%) Kubernetes Engineer
11 8 (3.14%) Python Developer
11 8 (3.14%) Senior DevOps Engineer
11 8 (3.14%) Site Engineer
11 8 (3.14%) Support Engineer
Libraries, Frameworks & Software Standards
1 16 (6.27%) Middleware
2 15 (5.88%) .NET
2 15 (5.88%) FIX Protocol
3 13 (5.10%) REST
4 12 (4.71%) Kafka
5 11 (4.31%) RESTful
6 10 (3.92%) OAuth
6 10 (3.92%) OAuth2
6 10 (3.92%) Spring
7 9 (3.53%) Elastic Stack
8 7 (2.75%) Boost C++ Libraries
8 7 (2.75%) JSON
8 7 (2.75%) STL
8 7 (2.75%) XML
9 6 (2.35%) ARM Templates
9 6 (2.35%) Spring Boot
10 5 (1.96%) AngularJS
10 5 (1.96%) FpML
10 5 (1.96%) OpenID
10 5 (1.96%) React
Miscellaneous
1 43 (16.86%) Cloud Native
2 18 (7.06%) Data Centre
3 17 (6.67%) Foreign Exchange (FX)
3 17 (6.67%) Replication
4 12 (4.71%) Distributed Architecture
5 11 (4.31%) Clustering
5 11 (4.31%) Distributed Systems
5 11 (4.31%) Self-Motivation
6 8 (3.14%) Algorithms
6 8 (3.14%) Hybrid Cloud
6 8 (3.14%) Mainframe
7 7 (2.75%) Onboarding
7 7 (2.75%) Product Ownership
7 7 (2.75%) Public Cloud
8 6 (2.35%) Data Protection Act
8 6 (2.35%) Data Structures
8 6 (2.35%) Fixed Income
8 6 (2.35%) PKI
8 6 (2.35%) Private Cloud
8 6 (2.35%) Security Operations Centre
Operating Systems
1 59 (23.14%) Linux
2 29 (11.37%) Windows
3 15 (5.88%) Red Hat Enterprise Linux
4 14 (5.49%) Unix
4 14 (5.49%) Windows Server
5 9 (3.53%) CentOS
6 6 (2.35%) Solaris
7 5 (1.96%) zOS
8 4 (1.57%) Ubuntu
9 3 (1.18%) Android
10 2 (0.78%) Apple iOS
11 1 (0.39%) AIX
11 1 (0.39%) VMS
11 1 (0.39%) Windows 10
11 1 (0.39%) Windows Server 2016
11 1 (0.39%) Windows Server 2019
Processes & Methodologies
1 85 (33.33%) DevOps
2 75 (29.41%) CI/CD
3 73 (28.63%) Problem-Solving
4 55 (21.57%) Containerisation
5 50 (19.61%) Infrastructure as Code
6 38 (14.90%) Agile
7 31 (12.16%) Disaster Recovery
8 30 (11.76%) Low Latency
8 30 (11.76%) Stakeholder Management
9 28 (10.98%) Mentoring
10 27 (10.59%) Infrastructure Automation
11 26 (10.20%) Microservices
12 23 (9.02%) Infrastructure Engineering
12 23 (9.02%) Observability
12 23 (9.02%) Test Automation
13 22 (8.63%) Performance Tuning
14 20 (7.84%) Root Cause Analysis
15 18 (7.06%) Computer Science
15 18 (7.06%) Configuration Management
15 18 (7.06%) Open Source
Programming Languages
1 98 (38.43%) Python
2 46 (18.04%) SQL
3 34 (13.33%) Bash
4 32 (12.55%) Java
5 25 (9.80%) PowerShell
6 17 (6.67%) C#
7 13 (5.10%) C++
7 13 (5.10%) JavaScript
8 10 (3.92%) Perl
9 8 (3.14%) Go
10 7 (2.75%) Shell Script
11 4 (1.57%) Bicep
11 4 (1.57%) PL/SQL
11 4 (1.57%) REXX
11 4 (1.57%) T-SQL
12 3 (1.18%) Assembly Language
12 3 (1.18%) Jython
12 3 (1.18%) PromQL
12 3 (1.18%) Ruby
12 3 (1.18%) TypeScript
Qualifications
1 43 (16.86%) Security Cleared
2 39 (15.29%) SC Cleared
3 29 (11.37%) AWS Certification
4 26 (10.20%) AWS Certified Solutions Architect
5 17 (6.67%) Degree
6 14 (5.49%) Computer Science Degree
7 9 (3.53%) Cisco Certification
8 7 (2.75%) CCNP
9 6 (2.35%) AWS Certified DevOps Engineer
10 5 (1.96%) Azure Certification
10 5 (1.96%) CCNA
11 4 (1.57%) BPSS Clearance
12 3 (1.18%) AWS Certified Developer
12 3 (1.18%) AWS Certified SysOps Administrator
12 3 (1.18%) CCIE
12 3 (1.18%) DV Cleared
13 2 (0.78%) ITIL Certification
13 2 (0.78%) RHCE
13 2 (0.78%) VCAP
14 1 (0.39%) CCDP
Quality Assurance & Compliance
1 10 (3.92%) GDPR
2 7 (2.75%) QA
3 5 (1.96%) PCI DSS
3 5 (1.96%) SLA
4 4 (1.57%) HIPAA
4 4 (1.57%) Sarbanes-Oxley
5 2 (0.78%) Government Security Classifications
5 2 (0.78%) HMG Security Policy Framework
5 2 (0.78%) ISO/IEC 27001
5 2 (0.78%) NCSC
6 1 (0.39%) 21 CFR Part 11
6 1 (0.39%) Accessibility
6 1 (0.39%) California Consumer Privacy Act
6 1 (0.39%) Data Quality
6 1 (0.39%) GxP
6 1 (0.39%) HL7
6 1 (0.39%) ISO 8583
6 1 (0.39%) NIST
System Software
1 49 (19.22%) Docker
2 21 (8.24%) Active Directory
3 20 (7.84%) VMware Infrastructure
4 6 (2.35%) NFS
4 6 (2.35%) VMware ESXi
5 4 (1.57%) Hyper-V
5 4 (1.57%) Oracle RAC
5 4 (1.57%) Veritas File System
5 4 (1.57%) Veritas Volume Manager
5 4 (1.57%) Virtual Machines
5 4 (1.57%) VMware NSX
5 4 (1.57%) vSphere
6 3 (1.18%) RACF
7 2 (0.78%) Firmware
7 2 (0.78%) GPFS
7 2 (0.78%) vCloud
7 2 (0.78%) VMware Workstation
8 1 (0.39%) Virtual Desktop
Systems Management
1 67 (26.27%) Terraform
2 60 (23.53%) Kubernetes
3 49 (19.22%) Ansible
4 15 (5.88%) Prometheus
5 14 (5.49%) Grafana
6 13 (5.10%) FortiGate
7 10 (3.92%) Puppet
8 8 (3.14%) Rancher
9 7 (2.75%) Microsoft Intune
9 7 (2.75%) Progress Chef
10 5 (1.96%) ITRS Geneos
10 5 (1.96%) Kibana
10 5 (1.96%) Nagios
10 5 (1.96%) Red Hat Satellite
11 4 (1.57%) OMEGAMON
11 4 (1.57%) QRadar
11 4 (1.57%) Single Sign-On
12 3 (1.18%) logstash
13 2 (0.78%) Istio
13 2 (0.78%) vMotion
Vendors
1 27 (10.59%) Microsoft
2 24 (9.41%) VMware
3 20 (7.84%) F5
4 19 (7.45%) Cisco
5 15 (5.88%) Red Hat
5 15 (5.88%) Splunk
6 11 (4.31%) Oracle
7 10 (3.92%) Google
7 10 (3.92%) Solace
8 9 (3.53%) Nokia
8 9 (3.53%) Palo Alto
9 8 (3.14%) CheckPoint
9 8 (3.14%) Fortinet
9 8 (3.14%) Juniper
9 8 (3.14%) SAP
9 8 (3.14%) SolarWinds
10 6 (2.35%) Ericsson
11 5 (1.96%) Actix
11 5 (1.96%) Arista
12 4 (1.57%) CyberArk