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 contract job vacancies from the 6 months leading up to 4 December 2025, with comparisons to the same periods in the previous two years.

6 months to
4 Dec 2025
Same period 2024 Same period 2023
Rank 183 157 199
Rank change year-on-year -26 +42 +53
Contract jobs citing High Availability 221 252 239
As % of all contract jobs in London 1.54% 1.60% 1.25%
As % of the Processes & Methodologies category 1.68% 1.78% 1.39%
Number of daily rates quoted 153 166 180
10th Percentile £378 £313 £375
25th Percentile £450 £463 £507
Median daily rate (50th Percentile) £525 £575 £600
Median % change year-on-year -8.70% -4.17% -
75th Percentile £700 £679 £700
90th Percentile £800 £775 £704
England median daily rate £500 £550 £560
% change year-on-year -9.09% -1.79% -2.61%
Number of hourly rates quoted 3 7 4
10th Percentile £23.60 £22.26 £62.22
25th Percentile £24.50 - £73.05
Median hourly rate £26.00 £23.80 £86.41
Median % change year-on-year +9.24% -72.46% +236.08%
75th Percentile - - £90.94
90th Percentile - £54.28 £92.63
England median hourly rate £69.63 £23.80 £85.66
% change year-on-year +192.55% -72.21% +233.16%

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 13,187 14,123 17,197
As % of all contract IT jobs advertised in London 91.80% 89.82% 89.59%
Number of daily rates quoted 8,685 9,134 12,308
10th Percentile £338 £350 £356
25th Percentile £425 £450 £459
Median daily rate (50th Percentile) £526 £550 £567
Median % change year-on-year -4.45% -3.04% -3.86%
75th Percentile £650 £675 £688
90th Percentile £763 £800 £800
England median daily rate £500 £525 £545
% change year-on-year -4.76% -3.67% -0.91%
Number of hourly rates quoted 248 166 231
10th Percentile £18.25 £17.25 £18.78
25th Percentile £24.58 £23.80 £21.75
Median hourly rate £29.75 £37.25 £36.28
Median % change year-on-year -20.13% +2.67% -7.57%
75th Percentile £47.56 £53.75 £60.63
90th Percentile £66.50 £80.75 £76.25
England median hourly rate £25.15 £35.00 £44.50
% change year-on-year -28.14% -21.35% +18.90%

High Availability
Job Vacancy Trend in London

Historical trend showing the proportion of contract IT job postings citing High Availability relative to all contract IT jobs advertised in London.

High Availability job vacancy trend 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 4 December 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 4 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
Central London -13 37 £613 +6.52% 16
West London -11 8 £375 -21.05% 1
South London - 5 £850 - 1
High Availability
England

High Availability
Co-Occurring Skills & Capabilities in London 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 4 (1.81%) Microsoft Exchange
2 3 (1.36%) Apache
2 3 (1.36%) Apache Spark
2 3 (1.36%) CICS
2 3 (1.36%) Confluence
2 3 (1.36%) Ethereum
2 3 (1.36%) Hyperledger
3 2 (0.90%) nginx
3 2 (0.90%) Oracle HTTP Server
3 2 (0.90%) SAS
3 2 (0.90%) SharePoint
3 2 (0.90%) Tomcat
3 2 (0.90%) WebLogic
4 1 (0.45%) Apache Airflow
4 1 (0.45%) Drupal
4 1 (0.45%) OpenStack
4 1 (0.45%) WordPress
Applications
1 1 (0.45%) Chatbot
1 1 (0.45%) Microsoft Excel
1 1 (0.45%) Microsoft Office
1 1 (0.45%) Weka
Business Applications
1 6 (2.71%) SAP S/4HANA
2 1 (0.45%) Eikon
2 1 (0.45%) Eze OMS
2 1 (0.45%) Fidessa
Cloud Services
1 66 (29.86%) AWS
2 60 (27.15%) Azure
3 27 (12.22%) GitHub
4 24 (10.86%) Amazon S3
5 23 (10.41%) Amazon CloudWatch
5 23 (10.41%) Serverless
6 22 (9.95%) GCP
7 21 (9.50%) Virtual Private Cloud
8 20 (9.05%) AWS Lambda
9 18 (8.14%) Amazon EC2
10 16 (7.24%) AWS CloudFormation
11 14 (6.33%) GitHub Actions
12 13 (5.88%) Azure DevOps
13 10 (4.52%) Akamai
14 9 (4.07%) Amazon ECS
14 9 (4.07%) Amazon ELB
15 8 (3.62%) Amazon EKS
15 8 (3.62%) Datadog
15 8 (3.62%) Entra ID
16 7 (3.17%) Google Kubernetes Engine
Communications & Networking
1 41 (18.55%) Firewall
2 31 (14.03%) DNS
3 25 (11.31%) TCP/IP
4 24 (10.86%) VPN
5 16 (7.24%) Network Security
6 15 (6.79%) SSL
6 15 (6.79%) Wireshark
7 14 (6.33%) Multicast
8 13 (5.88%) WAN
9 12 (5.43%) BGP
10 11 (4.98%) DHCP
10 11 (4.98%) OSPF
11 9 (4.07%) HTTP
12 8 (3.62%) 4G
12 8 (3.62%) Cisco Nexus
12 8 (3.62%) LAN
13 7 (3.17%) 3GPP
13 7 (3.17%) Cisco ISE
13 7 (3.17%) LTE
13 7 (3.17%) Radio Access Network
Database & Business Intelligence
1 19 (8.60%) PostgreSQL
2 14 (6.33%) Relational Database
3 12 (5.43%) NoSQL
4 9 (4.07%) MySQL
5 8 (3.62%) Amazon RDS
5 8 (3.62%) MongoDB
6 7 (3.17%) Elasticsearch
6 7 (3.17%) SQL Server
7 4 (1.81%) DB2
7 4 (1.81%) Oracle Database
7 4 (1.81%) RDBMS
8 3 (1.36%) Azure SQL Database
8 3 (1.36%) Big Data
8 3 (1.36%) Data Warehouse
8 3 (1.36%) DynamoDB
8 3 (1.36%) Metadata
9 2 (0.90%) Amazon Aurora
9 2 (0.90%) Apache Cassandra
9 2 (0.90%) Data Lake
9 2 (0.90%) SAP BW
Development Applications
1 38 (17.19%) Jenkins
2 28 (12.67%) Git
3 21 (9.50%) GitLab
4 9 (4.07%) GCC
4 9 (4.07%) JIRA
5 8 (3.62%) GDB
6 4 (1.81%) Cypress.io
6 4 (1.81%) Robot Framework
6 4 (1.81%) Subversion
6 4 (1.81%) TeamCity
7 3 (1.36%) MLflow
7 3 (1.36%) Sonatype Nexus
8 2 (0.90%) Artifactory
8 2 (0.90%) Bitbucket
8 2 (0.90%) IBM UrbanCode
8 2 (0.90%) JUnit
8 2 (0.90%) SonarQube
8 2 (0.90%) Team Foundation Server
9 1 (0.45%) Gradle
9 1 (0.45%) Mocha
General
1 84 (38.01%) Social Skills
2 52 (23.53%) Finance
3 28 (12.67%) Banking
4 26 (11.76%) Analytical Skills
5 15 (6.79%) Public Sector
6 10 (4.52%) Front Office
6 10 (4.52%) Inclusion and Diversity
7 9 (4.07%) Telecoms
8 8 (3.62%) Influencing Skills
9 7 (3.17%) International Banking
10 6 (2.71%) Financial Institution
10 6 (2.71%) Retail
11 5 (2.26%) Investment Banking
12 4 (1.81%) Documentation Skills
12 4 (1.81%) Legal
13 3 (1.36%) Organisational Skills
13 3 (1.36%) Presentation Skills
14 2 (0.90%) Digital Healthcare
14 2 (0.90%) Manufacturing
14 2 (0.90%) Military
Job Titles
1 27 (12.22%) Senior
2 26 (11.76%) Developer
3 21 (9.50%) DevOps Engineer
4 20 (9.05%) Architect
5 18 (8.14%) Lead
5 18 (8.14%) Network Engineer
6 12 (5.43%) Infrastructure Engineer
7 9 (4.07%) Consultant
7 9 (4.07%) Senior DevOps
7 9 (4.07%) Senior DevOps Engineer
8 8 (3.62%) C++ Developer
8 8 (3.62%) Java Engineer
8 8 (3.62%) Network Specialist
9 7 (3.17%) Administrator
9 7 (3.17%) DBA
9 7 (3.17%) Network Design Specialist
9 7 (3.17%) Performance Specialist
9 7 (3.17%) Project Manager
9 7 (3.17%) Site Reliability Engineer
9 7 (3.17%) Support Engineer
Libraries, Frameworks & Software Standards
1 17 (7.69%) RESTful
2 16 (7.24%) Spring
3 15 (6.79%) REST
4 14 (6.33%) FIX Protocol
4 14 (6.33%) Middleware
5 12 (5.43%) Spring Boot
6 11 (4.98%) JSON
6 11 (4.98%) Kafka
7 10 (4.52%) OAuth
7 10 (4.52%) XML
8 9 (4.07%) .NET
8 9 (4.07%) Elastic Stack
9 8 (3.62%) Boost C++ Libraries
9 8 (3.62%) STL
10 7 (3.17%) Node.js
11 6 (2.71%) ARM Templates
11 6 (2.71%) OAuth2
12 5 (2.26%) AngularJS
12 5 (2.26%) Ultra Messaging
13 4 (1.81%) JPA
Miscellaneous
1 38 (17.19%) Cloud Native
2 24 (10.86%) Replication
3 17 (7.69%) Data Centre
4 16 (7.24%) Foreign Exchange (FX)
5 15 (6.79%) Distributed Systems
5 15 (6.79%) Hybrid Cloud
6 11 (4.98%) Clustering
7 10 (4.52%) Mainframe
7 10 (4.52%) Onboarding
8 9 (4.07%) Distributed Architecture
9 8 (3.62%) Product Ownership
10 6 (2.71%) Algorithms
10 6 (2.71%) Fixed Income
11 5 (2.26%) Private Cloud
11 5 (2.26%) Public Cloud
12 4 (1.81%) Data Protection Act
12 4 (1.81%) Derivative
12 4 (1.81%) Self-Motivation
13 3 (1.36%) DataPower
13 3 (1.36%) Linux Command Line
Operating Systems
1 52 (23.53%) Linux
2 21 (9.50%) Windows
3 16 (7.24%) Red Hat Enterprise Linux
4 10 (4.52%) Unix
5 8 (3.62%) VMS
5 8 (3.62%) Windows Server
6 5 (2.26%) CentOS
6 5 (2.26%) Solaris
6 5 (2.26%) Ubuntu
6 5 (2.26%) zOS
7 3 (1.36%) Android
8 2 (0.90%) Apple iOS
8 2 (0.90%) Windows Server 2016
9 1 (0.45%) AIX
9 1 (0.45%) Windows 10
9 1 (0.45%) Windows Server 2019
Processes & Methodologies
1 95 (42.99%) DevOps
2 89 (40.27%) CI/CD
3 57 (25.79%) Infrastructure as Code
4 56 (25.34%) Problem-Solving
5 46 (20.81%) Containerisation
6 42 (19.00%) Agile
7 37 (16.74%) Microservices
8 33 (14.93%) Low Latency
9 32 (14.48%) Root Cause Analysis
10 31 (14.03%) Observability
11 30 (13.57%) Disaster Recovery
12 29 (13.12%) Continuous Improvement
13 24 (10.86%) Migration
13 24 (10.86%) Stakeholder Management
14 23 (10.41%) Performance Tuning
15 22 (9.95%) Incident Response
15 22 (9.95%) Infrastructure Automation
16 21 (9.50%) Infrastructure Engineering
16 21 (9.50%) ITIL
16 21 (9.50%) Test Automation
Programming Languages
1 87 (39.37%) Python
2 41 (18.55%) Bash
3 35 (15.84%) SQL
4 31 (14.03%) Java
5 24 (10.86%) PowerShell
6 13 (5.88%) Perl
7 10 (4.52%) C#
7 10 (4.52%) C++
7 10 (4.52%) JavaScript
8 6 (2.71%) Shell Script
9 5 (2.26%) Go
10 4 (1.81%) Bicep
10 4 (1.81%) REXX
11 3 (1.36%) Assembly Language
11 3 (1.36%) PHP
11 3 (1.36%) PromQL
11 3 (1.36%) T-SQL
11 3 (1.36%) TypeScript
12 2 (0.90%) Scala
12 2 (0.90%) sed
Qualifications
1 30 (13.57%) Security Cleared
2 23 (10.41%) SC Cleared
3 9 (4.07%) AWS Certification
3 9 (4.07%) Cisco Certification
3 9 (4.07%) Degree
4 8 (3.62%) Computer Science Degree
5 7 (3.17%) CCNP
6 6 (2.71%) AWS Certified Solutions Architect
7 5 (2.26%) Azure Certification
7 5 (2.26%) CCNA
7 5 (2.26%) ITIL Certification
8 4 (1.81%) CCIE
8 4 (1.81%) DV Cleared
9 3 (1.36%) AWS Certified DevOps Engineer
10 2 (0.90%) CCDP
10 2 (0.90%) OCP
10 2 (0.90%) Oracle Certification
10 2 (0.90%) PMI Certification
10 2 (0.90%) PMP
10 2 (0.90%) VCAP
Quality Assurance & Compliance
1 8 (3.62%) GDPR
2 7 (3.17%) QA
3 4 (1.81%) Sarbanes-Oxley
4 2 (0.90%) Data Quality
4 2 (0.90%) HIPAA
5 1 (0.45%) Accessibility
5 1 (0.45%) California Consumer Privacy Act
5 1 (0.45%) NIST
5 1 (0.45%) PCI DSS
5 1 (0.45%) SLA
System Software
1 49 (22.17%) Docker
2 18 (8.14%) VMware Infrastructure
3 12 (5.43%) Active Directory
4 7 (3.17%) VMware ESXi
4 7 (3.17%) vSphere
5 6 (2.71%) NFS
6 5 (2.26%) Virtual Machines
6 5 (2.26%) VMware NSX
7 4 (1.81%) Hyper-V
7 4 (1.81%) Veritas File System
7 4 (1.81%) Veritas Volume Manager
8 3 (1.36%) GPFS
8 3 (1.36%) RACF
9 2 (0.90%) Virtual Desktop
10 1 (0.45%) Lustre
10 1 (0.45%) Microsoft App-V
10 1 (0.45%) Oracle RAC
10 1 (0.45%) Slurm Workload Manager
Systems Management
1 69 (31.22%) Terraform
2 54 (24.43%) Kubernetes
3 50 (22.62%) Ansible
4 20 (9.05%) Grafana
5 18 (8.14%) Prometheus
6 12 (5.43%) ITRS Geneos
7 10 (4.52%) FortiGate
8 8 (3.62%) Kibana
9 6 (2.71%) Red Hat Satellite
10 5 (2.26%) logstash
10 5 (2.26%) Puppet
10 5 (2.26%) vCenter Server
11 4 (1.81%) Microsoft Intune
11 4 (1.81%) OMEGAMON
11 4 (1.81%) QRadar
12 3 (1.36%) Argo
13 2 (0.90%) Kubeflow
13 2 (0.90%) Rancher
13 2 (0.90%) SCCM
13 2 (0.90%) Single Sign-On
Vendors
1 22 (9.95%) Splunk
2 21 (9.50%) F5
3 20 (9.05%) VMware
4 19 (8.60%) Microsoft
5 17 (7.69%) Cisco
5 17 (7.69%) Red Hat
6 13 (5.88%) Palo Alto
7 12 (5.43%) Solace
8 10 (4.52%) Fortinet
9 9 (4.07%) CheckPoint
9 9 (4.07%) Nokia
9 9 (4.07%) Oracle
10 8 (3.62%) Ericsson
10 8 (3.62%) SolarWinds
11 7 (3.17%) Actix
11 7 (3.17%) Databricks
11 7 (3.17%) Juniper
11 7 (3.17%) SAP
12 6 (2.71%) Google
13 5 (2.26%) IBM