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 20 November 2025, with comparisons to the same periods in the previous two years.

6 months to
20 Nov 2025
Same period 2024 Same period 2023
Rank 187 172 192
Rank change year-on-year -15 +20 +58
Contract jobs citing High Availability 218 226 254
As % of all contract jobs in London 1.54% 1.44% 1.28%
As % of the Processes & Methodologies category 1.67% 1.61% 1.43%
Number of daily rates quoted 154 143 191
10th Percentile £375 £309 £375
25th Percentile £450 £459 £498
Median daily rate (50th Percentile) £533 £570 £600
Median % change year-on-year -6.58% -5.00% -
75th Percentile £709 £674 £688
90th Percentile £800 £762 £700
England median daily rate £500 £538 £568
% change year-on-year -6.98% -5.29% -1.30%
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 £65.00 £23.80 £82.81
% change year-on-year +173.09% -71.26% +222.09%

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 13,053 14,033 17,744
As % of all contract IT jobs advertised in London 92.33% 89.24% 89.72%
Number of daily rates quoted 8,585 9,054 12,730
10th Percentile £335 £350 £353
25th Percentile £425 £450 £460
Median daily rate (50th Percentile) £537 £550 £568
Median % change year-on-year -2.36% -3.21% -3.69%
75th Percentile £653 £675 £688
90th Percentile £775 £800 £800
England median daily rate £505 £525 £545
% change year-on-year -3.81% -3.67% -0.91%
Number of hourly rates quoted 261 166 246
10th Percentile £17.98 £17.38 £18.68
25th Percentile £24.50 £23.98 £21.56
Median hourly rate £28.13 £37.50 £36.33
Median % change year-on-year -25.00% +3.21% -6.54%
75th Percentile £47.00 £55.56 £61.75
90th Percentile £67.50 £80.38 £76.25
England median hourly rate £25.15 £37.00 £45.00
% change year-on-year -32.03% -17.78% +26.90%

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 20 November 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 20 November 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 -1 37 £600 +4.35% 70
South London - 8 £738 - 1
West London -13 6 £375 -21.05% 2
East London +3 3 £263 +5.00%
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 3 (1.38%) Apache
1 3 (1.38%) Apache Spark
1 3 (1.38%) CICS
1 3 (1.38%) Confluence
1 3 (1.38%) Ethereum
1 3 (1.38%) Hyperledger
1 3 (1.38%) Microsoft Exchange
2 2 (0.92%) CMS
2 2 (0.92%) Headless CMS
2 2 (0.92%) nginx
2 2 (0.92%) Oracle HTTP Server
2 2 (0.92%) SAS
2 2 (0.92%) Tomcat
2 2 (0.92%) WebLogic
3 1 (0.46%) Apache Airflow
3 1 (0.46%) Drupal
3 1 (0.46%) OpenStack
3 1 (0.46%) SharePoint
3 1 (0.46%) WordPress
Applications
1 1 (0.46%) Chatbot
1 1 (0.46%) Microsoft Excel
1 1 (0.46%) Microsoft Office
1 1 (0.46%) Weka
Business Applications
1 9 (4.13%) SAP S/4HANA
2 1 (0.46%) Eikon
2 1 (0.46%) Eze OMS
2 1 (0.46%) Fidessa
Cloud Services
1 57 (26.15%) AWS
2 55 (25.23%) Azure
3 25 (11.47%) GitHub
4 24 (11.01%) Amazon S3
5 21 (9.63%) Amazon CloudWatch
5 21 (9.63%) Serverless
5 21 (9.63%) Virtual Private Cloud
6 18 (8.26%) AWS Lambda
6 18 (8.26%) GCP
7 17 (7.80%) Amazon EC2
8 13 (5.96%) AWS CloudFormation
9 12 (5.50%) Azure DevOps
9 12 (5.50%) GitHub Actions
10 9 (4.13%) Akamai
10 9 (4.13%) Amazon ECS
10 9 (4.13%) Amazon EKS
10 9 (4.13%) Amazon ELB
10 9 (4.13%) PaaS
11 8 (3.67%) Entra ID
12 7 (3.21%) Datadog
Communications & Networking
1 42 (19.27%) Firewall
2 31 (14.22%) DNS
3 28 (12.84%) TCP/IP
4 24 (11.01%) VPN
5 16 (7.34%) Multicast
5 16 (7.34%) Network Security
6 15 (6.88%) SSL
6 15 (6.88%) Wireshark
7 13 (5.96%) WAN
8 12 (5.50%) BGP
9 11 (5.05%) DHCP
9 11 (5.05%) OSPF
10 9 (4.13%) HTTP
11 8 (3.67%) 4G
11 8 (3.67%) Cisco Nexus
11 8 (3.67%) LAN
12 7 (3.21%) Cisco ISE
12 7 (3.21%) F5 BIG-IP LTM
12 7 (3.21%) LTE
12 7 (3.21%) Radio Access Network
Database & Business Intelligence
1 16 (7.34%) PostgreSQL
2 12 (5.50%) NoSQL
2 12 (5.50%) Relational Database
3 8 (3.67%) Amazon RDS
4 7 (3.21%) Elasticsearch
4 7 (3.21%) MySQL
4 7 (3.21%) SQL Server
5 6 (2.75%) MongoDB
6 4 (1.83%) Azure SQL Database
6 4 (1.83%) DB2
6 4 (1.83%) RDBMS
7 3 (1.38%) Data Warehouse
7 3 (1.38%) DynamoDB
7 3 (1.38%) Metadata
7 3 (1.38%) Oracle Database
8 2 (0.92%) Amazon Aurora
8 2 (0.92%) Big Data
8 2 (0.92%) Data Lake
8 2 (0.92%) Power BI
8 2 (0.92%) Redis
Development Applications
1 35 (16.06%) Jenkins
2 25 (11.47%) Git
3 19 (8.72%) GitLab
4 10 (4.59%) GCC
5 9 (4.13%) GDB
5 9 (4.13%) JIRA
6 4 (1.83%) Cypress.io
6 4 (1.83%) Robot Framework
6 4 (1.83%) Subversion
6 4 (1.83%) TeamCity
7 3 (1.38%) Sonatype Nexus
8 2 (0.92%) Artifactory
8 2 (0.92%) Bitbucket
8 2 (0.92%) IBM UrbanCode
8 2 (0.92%) JUnit
8 2 (0.92%) SonarQube
8 2 (0.92%) Team Foundation Server
9 1 (0.46%) Gradle
9 1 (0.46%) Maven
9 1 (0.46%) Mocha
General
1 80 (36.70%) Social Skills
2 55 (25.23%) Finance
3 30 (13.76%) Analytical Skills
4 26 (11.93%) Banking
5 14 (6.42%) Front Office
6 13 (5.96%) Public Sector
7 9 (4.13%) Telecoms
8 8 (3.67%) Inclusion and Diversity
8 8 (3.67%) Influencing Skills
8 8 (3.67%) International Banking
9 7 (3.21%) Financial Institution
10 6 (2.75%) Retail
11 4 (1.83%) Documentation Skills
11 4 (1.83%) Investment Banking
12 3 (1.38%) Digital Healthcare
12 3 (1.38%) Legal
12 3 (1.38%) Organisational Skills
12 3 (1.38%) Presentation Skills
13 2 (0.92%) Manufacturing
13 2 (0.92%) Publishing
Job Titles
1 27 (12.39%) Developer
2 26 (11.93%) Senior
3 21 (9.63%) DevOps Engineer
4 19 (8.72%) Architect
5 18 (8.26%) Lead
5 18 (8.26%) Network Engineer
6 13 (5.96%) Infrastructure Engineer
7 10 (4.59%) Consultant
8 9 (4.13%) Senior DevOps
8 9 (4.13%) Senior DevOps Engineer
9 8 (3.67%) C++ Developer
9 8 (3.67%) Network Specialist
10 7 (3.21%) Administrator
10 7 (3.21%) Network Design Specialist
10 7 (3.21%) Performance Specialist
11 6 (2.75%) Cloud Architect
11 6 (2.75%) Cloud Engineer
11 6 (2.75%) DBA
11 6 (2.75%) Python Developer
11 6 (2.75%) Site Reliability Engineer
Libraries, Frameworks & Software Standards
1 18 (8.26%) FIX Protocol
1 18 (8.26%) Middleware
2 14 (6.42%) REST
3 12 (5.50%) OAuth
3 12 (5.50%) RESTful
4 11 (5.05%) Spring
5 10 (4.59%) JSON
6 9 (4.13%) .NET
6 9 (4.13%) Boost C++ Libraries
6 9 (4.13%) Elastic Stack
6 9 (4.13%) Kafka
6 9 (4.13%) STL
6 9 (4.13%) XML
7 8 (3.67%) OAuth2
8 7 (3.21%) ARM Templates
8 7 (3.21%) Spring Boot
9 6 (2.75%) Node.js
10 5 (2.29%) FpML
10 5 (2.29%) OpenID
10 5 (2.29%) Ultra Messaging
Miscellaneous
1 36 (16.51%) Cloud Native
2 21 (9.63%) Replication
3 19 (8.72%) Data Centre
3 19 (8.72%) Foreign Exchange (FX)
4 15 (6.88%) Hybrid Cloud
5 13 (5.96%) Distributed Systems
6 12 (5.50%) Clustering
7 11 (5.05%) Distributed Architecture
8 10 (4.59%) Onboarding
9 9 (4.13%) Algorithms
10 8 (3.67%) Fixed Income
10 8 (3.67%) Mainframe
11 7 (3.21%) Product Ownership
12 6 (2.75%) Data Structures
12 6 (2.75%) Derivative
13 5 (2.29%) Private Cloud
13 5 (2.29%) Public Cloud
14 4 (1.83%) Data Protection Act
14 4 (1.83%) Self-Motivation
15 3 (1.38%) NHS
Operating Systems
1 51 (23.39%) Linux
2 21 (9.63%) Windows
3 16 (7.34%) Red Hat Enterprise Linux
4 9 (4.13%) Unix
5 8 (3.67%) VMS
5 8 (3.67%) Windows Server
6 5 (2.29%) CentOS
6 5 (2.29%) Solaris
6 5 (2.29%) Ubuntu
6 5 (2.29%) zOS
7 3 (1.38%) Android
8 2 (0.92%) Apple iOS
8 2 (0.92%) Windows Server 2016
9 1 (0.46%) AIX
9 1 (0.46%) Windows 10
9 1 (0.46%) Windows Server 2019
Processes & Methodologies
1 88 (40.37%) DevOps
2 83 (38.07%) CI/CD
3 57 (26.15%) Problem-Solving
4 56 (25.69%) Infrastructure as Code
5 40 (18.35%) Agile
6 39 (17.89%) Containerisation
7 32 (14.68%) Disaster Recovery
7 32 (14.68%) Root Cause Analysis
8 31 (14.22%) Low Latency
9 29 (13.30%) Continuous Improvement
9 29 (13.30%) Microservices
10 28 (12.84%) Observability
11 23 (10.55%) Stakeholder Management
12 22 (10.09%) Incident Response
12 22 (10.09%) Infrastructure Automation
12 22 (10.09%) Mentoring
13 20 (9.17%) ITIL
13 20 (9.17%) Migration
13 20 (9.17%) Performance Tuning
13 20 (9.17%) Scrum
Programming Languages
1 85 (38.99%) Python
2 42 (19.27%) Bash
3 38 (17.43%) SQL
4 28 (12.84%) Java
5 25 (11.47%) PowerShell
6 14 (6.42%) C#
6 14 (6.42%) C++
7 12 (5.50%) Perl
8 8 (3.67%) JavaScript
9 5 (2.29%) Bicep
10 4 (1.83%) Go
10 4 (1.83%) REXX
10 4 (1.83%) Shell Script
10 4 (1.83%) T-SQL
11 3 (1.38%) Assembly Language
11 3 (1.38%) PromQL
11 3 (1.38%) TypeScript
12 2 (0.92%) Kotlin
12 2 (0.92%) PL/1
12 2 (0.92%) Swift
Qualifications
1 27 (12.39%) Security Cleared
2 21 (9.63%) SC Cleared
3 14 (6.42%) Degree
4 13 (5.96%) Computer Science Degree
5 10 (4.59%) AWS Certification
6 8 (3.67%) AWS Certified Solutions Architect
6 8 (3.67%) Cisco Certification
7 7 (3.21%) CCNP
8 6 (2.75%) Azure Certification
9 5 (2.29%) ITIL Certification
10 4 (1.83%) CCIE
10 4 (1.83%) CCNA
11 3 (1.38%) AWS Certified DevOps Engineer
11 3 (1.38%) DV Cleared
12 2 (0.92%) CCDP
12 2 (0.92%) Microsoft Certification
12 2 (0.92%) RHCE
12 2 (0.92%) VCAP
13 1 (0.46%) CISSP
13 1 (0.46%) PMP
Quality Assurance & Compliance
1 7 (3.21%) GDPR
2 4 (1.83%) QA
2 4 (1.83%) Sarbanes-Oxley
3 2 (0.92%) Data Quality
3 2 (0.92%) HIPAA
4 1 (0.46%) Accessibility
4 1 (0.46%) HL7
4 1 (0.46%) NIST
4 1 (0.46%) PCI DSS
4 1 (0.46%) SLA
System Software
1 45 (20.64%) Docker
2 18 (8.26%) VMware Infrastructure
3 12 (5.50%) Active Directory
4 7 (3.21%) VMware ESXi
4 7 (3.21%) vSphere
5 6 (2.75%) NFS
6 5 (2.29%) Virtual Machines
6 5 (2.29%) VMware NSX
7 4 (1.83%) Hyper-V
7 4 (1.83%) Veritas File System
7 4 (1.83%) Veritas Volume Manager
8 3 (1.38%) GPFS
8 3 (1.38%) RACF
9 2 (0.92%) Virtual Desktop
10 1 (0.46%) Lustre
10 1 (0.46%) Microsoft App-V
10 1 (0.46%) Oracle RAC
10 1 (0.46%) Slurm Workload Manager
Systems Management
1 65 (29.82%) Terraform
2 49 (22.48%) Ansible
3 47 (21.56%) Kubernetes
4 18 (8.26%) Grafana
5 16 (7.34%) Prometheus
6 11 (5.05%) ITRS Geneos
7 10 (4.59%) FortiGate
8 8 (3.67%) Kibana
9 6 (2.75%) Red Hat Satellite
10 5 (2.29%) logstash
10 5 (2.29%) Puppet
10 5 (2.29%) vCenter Server
11 4 (1.83%) Microsoft Intune
11 4 (1.83%) OMEGAMON
11 4 (1.83%) QRadar
12 3 (1.38%) Argo
12 3 (1.38%) Single Sign-On
13 2 (0.92%) Istio
13 2 (0.92%) Rancher
13 2 (0.92%) SCCM
Vendors
1 21 (9.63%) F5
2 20 (9.17%) VMware
3 19 (8.72%) Microsoft
3 19 (8.72%) Splunk
4 17 (7.80%) Cisco
4 17 (7.80%) Red Hat
5 13 (5.96%) Palo Alto
5 13 (5.96%) Solace
6 10 (4.59%) Fortinet
6 10 (4.59%) SAP
7 9 (4.13%) CheckPoint
7 9 (4.13%) Nokia
8 8 (3.67%) Ericsson
8 8 (3.67%) SolarWinds
9 7 (3.21%) Actix
9 7 (3.21%) Databricks
9 7 (3.21%) Juniper
9 7 (3.21%) Oracle
10 6 (2.75%) Google
11 5 (2.29%) TIBCO