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

6 months to
12 Nov 2025
Same period 2024 Same period 2023
Rank 175 180 194
Rank change year-on-year +5 +14 +62
Contract jobs citing High Availability 213 216 257
As % of all contract jobs in London 1.52% 1.39% 1.28%
As % of the Processes & Methodologies category 1.65% 1.56% 1.42%
Number of daily rates quoted 151 136 193
10th Percentile £375 £296 £375
25th Percentile £450 £456 £495
Median daily rate (50th Percentile) £550 £560 £600
Median % change year-on-year -1.79% -6.67% -
75th Percentile £681 £653 £688
90th Percentile £800 £755 £700
England median daily rate £500 £525 £550
% change year-on-year -4.76% -4.55% -4.35%
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% +245.62%
75th Percentile - - £90.94
90th Percentile - £54.28 £92.63
England median hourly rate £69.63 £25.65 £72.91
% change year-on-year +171.45% -64.82% +191.62%

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 12,911 13,825 18,066
As % of all contract IT jobs advertised in London 92.43% 89.13% 89.67%
Number of daily rates quoted 8,500 8,906 13,005
10th Percentile £331 £350 £356
25th Percentile £425 £450 £463
Median daily rate (50th Percentile) £538 £550 £575
Median % change year-on-year -2.27% -4.35% -2.13%
75th Percentile £663 £675 £688
90th Percentile £775 £800 £800
England median daily rate £508 £525 £547
% change year-on-year -3.33% -4.02% -0.55%
Number of hourly rates quoted 258 165 248
10th Percentile £17.98 £17.35 £18.55
25th Percentile £25.00 £23.80 £21.44
Median hourly rate £29.50 £37.50 £37.50
Median % change year-on-year -21.33% - -
75th Percentile £47.00 £55.75 £60.44
90th Percentile £65.75 £80.45 £77.50
England median hourly rate £25.15 £36.00 £44.50
% change year-on-year -30.14% -19.10% +27.14%

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 12 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 12 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 +4 35 £600 +4.35% 71
South London - 8 £738 - 1
West London -13 5 - - 1
East London 0 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 4 (1.88%) Apache Spark
2 3 (1.41%) Apache
2 3 (1.41%) CICS
2 3 (1.41%) Confluence
2 3 (1.41%) Ethereum
2 3 (1.41%) Hyperledger
2 3 (1.41%) Microsoft Exchange
3 2 (0.94%) CMS
3 2 (0.94%) Headless CMS
3 2 (0.94%) nginx
3 2 (0.94%) Oracle HTTP Server
3 2 (0.94%) SAS
3 2 (0.94%) Tomcat
3 2 (0.94%) WebLogic
4 1 (0.47%) Apache Airflow
4 1 (0.47%) Drupal
4 1 (0.47%) OpenStack
4 1 (0.47%) SharePoint
4 1 (0.47%) WordPress
Applications
1 1 (0.47%) Chatbot
1 1 (0.47%) Microsoft Excel
1 1 (0.47%) Microsoft Office
1 1 (0.47%) Weka
Business Applications
1 9 (4.23%) SAP S/4HANA
2 1 (0.47%) Eikon
2 1 (0.47%) Eze OMS
2 1 (0.47%) Fidessa
Cloud Services
1 56 (26.29%) Azure
2 54 (25.35%) AWS
3 26 (12.21%) GitHub
4 20 (9.39%) Amazon S3
5 19 (8.92%) Amazon CloudWatch
5 19 (8.92%) GCP
6 18 (8.45%) Virtual Private Cloud
7 16 (7.51%) Serverless
8 14 (6.57%) Amazon EC2
8 14 (6.57%) AWS Lambda
9 12 (5.63%) AWS CloudFormation
9 12 (5.63%) GitHub Actions
10 11 (5.16%) Azure DevOps
11 9 (4.23%) Akamai
11 9 (4.23%) Amazon ELB
11 9 (4.23%) PaaS
12 7 (3.29%) Entra ID
12 7 (3.29%) Google Kubernetes Engine
13 6 (2.82%) Azure AKS
13 6 (2.82%) Azure Monitor
Communications & Networking
1 42 (19.72%) Firewall
2 32 (15.02%) DNS
3 29 (13.62%) TCP/IP
4 24 (11.27%) VPN
5 17 (7.98%) Network Security
6 16 (7.51%) Multicast
7 15 (7.04%) SSL
7 15 (7.04%) Wireshark
8 13 (6.10%) WAN
9 12 (5.63%) BGP
9 12 (5.63%) DHCP
10 11 (5.16%) OSPF
11 9 (4.23%) 4G
11 9 (4.23%) HTTP
12 8 (3.76%) Cisco Nexus
12 8 (3.76%) LAN
13 7 (3.29%) 3GPP
13 7 (3.29%) Cisco ISE
13 7 (3.29%) F5 BIG-IP LTM
13 7 (3.29%) SNMP
Database & Business Intelligence
1 17 (7.98%) PostgreSQL
2 14 (6.57%) Relational Database
3 13 (6.10%) NoSQL
4 7 (3.29%) MySQL
4 7 (3.29%) SQL Server
5 6 (2.82%) Elasticsearch
5 6 (2.82%) MongoDB
6 5 (2.35%) Amazon RDS
7 4 (1.88%) DB2
7 4 (1.88%) RDBMS
8 3 (1.41%) Azure SQL Database
8 3 (1.41%) DynamoDB
8 3 (1.41%) Oracle Database
9 2 (0.94%) Apache Cassandra
9 2 (0.94%) Big Data
9 2 (0.94%) Hadoop
9 2 (0.94%) Oracle Exadata
9 2 (0.94%) Redis
9 2 (0.94%) SAP Data Services
9 2 (0.94%) SAP HANA
Development Applications
1 32 (15.02%) Jenkins
2 23 (10.80%) Git
3 16 (7.51%) GitLab
4 10 (4.69%) GCC
5 9 (4.23%) GDB
5 9 (4.23%) JIRA
6 4 (1.88%) Cypress.io
6 4 (1.88%) Robot Framework
6 4 (1.88%) Subversion
6 4 (1.88%) TeamCity
7 3 (1.41%) Artifactory
7 3 (1.41%) Sonatype Nexus
8 2 (0.94%) Bitbucket
8 2 (0.94%) Gradle
8 2 (0.94%) IBM UrbanCode
8 2 (0.94%) JUnit
8 2 (0.94%) SonarQube
8 2 (0.94%) Team Foundation Server
9 1 (0.47%) Android Studio
9 1 (0.47%) SQL Server Management Studio (SSMS)
General
1 77 (36.15%) Social Skills
2 54 (25.35%) Finance
3 29 (13.62%) Analytical Skills
4 26 (12.21%) Banking
5 14 (6.57%) Front Office
6 11 (5.16%) Public Sector
7 9 (4.23%) Telecoms
8 8 (3.76%) Inclusion and Diversity
8 8 (3.76%) Influencing Skills
8 8 (3.76%) International Banking
9 6 (2.82%) Financial Institution
9 6 (2.82%) Retail
10 4 (1.88%) Documentation Skills
10 4 (1.88%) Investment Banking
11 3 (1.41%) Digital Healthcare
11 3 (1.41%) Legal
11 3 (1.41%) Organisational Skills
11 3 (1.41%) Presentation Skills
12 2 (0.94%) Manufacturing
12 2 (0.94%) Publishing
Job Titles
1 28 (13.15%) Developer
1 28 (13.15%) Senior
2 22 (10.33%) DevOps Engineer
3 19 (8.92%) Architect
4 18 (8.45%) Network Engineer
5 16 (7.51%) Lead
6 13 (6.10%) Infrastructure Engineer
7 10 (4.69%) Consultant
8 9 (4.23%) Senior DevOps
8 9 (4.23%) Senior DevOps Engineer
9 8 (3.76%) C++ Developer
9 8 (3.76%) Network Specialist
10 7 (3.29%) Administrator
10 7 (3.29%) Network Design Specialist
10 7 (3.29%) Performance Specialist
10 7 (3.29%) Project Manager
11 6 (2.82%) Cloud Architect
11 6 (2.82%) Cloud Engineer
11 6 (2.82%) Infrastructure Project Manager
11 6 (2.82%) Site Reliability Engineer
Libraries, Frameworks & Software Standards
1 18 (8.45%) FIX Protocol
1 18 (8.45%) Middleware
2 14 (6.57%) REST
3 12 (5.63%) OAuth
4 11 (5.16%) Kafka
4 11 (5.16%) Spring
5 10 (4.69%) .NET
5 10 (4.69%) JSON
5 10 (4.69%) RESTful
6 9 (4.23%) Boost C++ Libraries
6 9 (4.23%) STL
6 9 (4.23%) XML
7 8 (3.76%) Elastic Stack
7 8 (3.76%) OAuth2
8 7 (3.29%) ARM Templates
9 6 (2.82%) Node.js
9 6 (2.82%) Spring Boot
10 5 (2.35%) AngularJS
10 5 (2.35%) OpenID
10 5 (2.35%) Ultra Messaging
Miscellaneous
1 37 (17.37%) Cloud Native
2 21 (9.86%) Replication
3 19 (8.92%) Data Centre
4 18 (8.45%) Foreign Exchange (FX)
5 14 (6.57%) Clustering
5 14 (6.57%) Hybrid Cloud
6 11 (5.16%) Distributed Architecture
7 10 (4.69%) Distributed Systems
7 10 (4.69%) Onboarding
8 9 (4.23%) Algorithms
9 8 (3.76%) Mainframe
10 7 (3.29%) Fixed Income
10 7 (3.29%) Product Ownership
11 6 (2.82%) Data Structures
12 5 (2.35%) Derivative
12 5 (2.35%) Private Cloud
12 5 (2.35%) Public Cloud
12 5 (2.35%) Self-Motivation
13 4 (1.88%) Data Protection Act
14 3 (1.41%) NHS
Operating Systems
1 48 (22.54%) Linux
2 23 (10.80%) Windows
3 16 (7.51%) Red Hat Enterprise Linux
4 9 (4.23%) Windows Server
5 8 (3.76%) Unix
6 5 (2.35%) CentOS
6 5 (2.35%) Solaris
6 5 (2.35%) Ubuntu
6 5 (2.35%) VMS
6 5 (2.35%) zOS
7 3 (1.41%) Android
8 2 (0.94%) Apple iOS
8 2 (0.94%) Windows Server 2016
9 1 (0.47%) AIX
9 1 (0.47%) Windows 10
9 1 (0.47%) Windows Server 2019
Processes & Methodologies
1 80 (37.56%) DevOps
2 78 (36.62%) CI/CD
3 53 (24.88%) Infrastructure as Code
3 53 (24.88%) Problem-Solving
4 40 (18.78%) Agile
5 33 (15.49%) Containerisation
6 30 (14.08%) Low Latency
7 29 (13.62%) Disaster Recovery
8 27 (12.68%) Root Cause Analysis
9 26 (12.21%) Microservices
9 26 (12.21%) Observability
10 25 (11.74%) Continuous Improvement
11 24 (11.27%) Stakeholder Management
12 23 (10.80%) Mentoring
13 22 (10.33%) Infrastructure Automation
14 21 (9.86%) Scrum
15 20 (9.39%) Migration
15 20 (9.39%) Test Automation
16 19 (8.92%) Data Protection
16 19 (8.92%) Performance Tuning
Programming Languages
1 84 (39.44%) Python
2 38 (17.84%) Bash
3 37 (17.37%) SQL
4 26 (12.21%) PowerShell
5 25 (11.74%) Java
6 14 (6.57%) C#
6 14 (6.57%) C++
7 11 (5.16%) Perl
8 8 (3.76%) JavaScript
9 4 (1.88%) Bicep
9 4 (1.88%) Go
9 4 (1.88%) REXX
9 4 (1.88%) Shell Script
9 4 (1.88%) T-SQL
10 3 (1.41%) Assembly Language
10 3 (1.41%) PromQL
10 3 (1.41%) TypeScript
11 2 (0.94%) Objective-C
11 2 (0.94%) PHP
11 2 (0.94%) PL/1
Qualifications
1 23 (10.80%) Security Cleared
2 19 (8.92%) SC Cleared
3 15 (7.04%) Degree
4 13 (6.10%) Computer Science Degree
5 8 (3.76%) Cisco Certification
6 7 (3.29%) AWS Certification
6 7 (3.29%) CCNP
7 5 (2.35%) AWS Certified Solutions Architect
7 5 (2.35%) Azure Certification
7 5 (2.35%) ITIL Certification
8 4 (1.88%) CCIE
8 4 (1.88%) CCNA
9 2 (0.94%) BPSS Clearance
9 2 (0.94%) CCDP
9 2 (0.94%) Microsoft Certification
9 2 (0.94%) RHCE
10 1 (0.47%) CISSP
10 1 (0.47%) Master's Degree
10 1 (0.47%) PMI Certification
10 1 (0.47%) PMP
Quality Assurance & Compliance
1 7 (3.29%) GDPR
2 4 (1.88%) Sarbanes-Oxley
3 3 (1.41%) QA
4 2 (0.94%) HIPAA
4 2 (0.94%) PCI DSS
5 1 (0.47%) Accessibility
5 1 (0.47%) Data Quality
5 1 (0.47%) HL7
5 1 (0.47%) NIST
5 1 (0.47%) SLA
System Software
1 42 (19.72%) Docker
2 18 (8.45%) VMware Infrastructure
3 11 (5.16%) Active Directory
4 6 (2.82%) NFS
4 6 (2.82%) VMware ESXi
5 5 (2.35%) VMware NSX
6 4 (1.88%) Hyper-V
6 4 (1.88%) Veritas File System
6 4 (1.88%) Veritas Volume Manager
6 4 (1.88%) vSphere
7 3 (1.41%) GPFS
7 3 (1.41%) RACF
8 2 (0.94%) Firmware
8 2 (0.94%) Virtual Desktop
8 2 (0.94%) Virtual Machines
9 1 (0.47%) Lustre
9 1 (0.47%) Microsoft App-V
9 1 (0.47%) Oracle RAC
9 1 (0.47%) Slurm Workload Manager
Systems Management
1 64 (30.05%) Terraform
2 51 (23.94%) Ansible
3 44 (20.66%) Kubernetes
4 17 (7.98%) Grafana
5 15 (7.04%) Prometheus
6 11 (5.16%) FortiGate
7 7 (3.29%) ITRS Geneos
7 7 (3.29%) Kibana
8 6 (2.82%) Red Hat Satellite
9 5 (2.35%) Puppet
10 4 (1.88%) logstash
10 4 (1.88%) Microsoft Intune
10 4 (1.88%) OMEGAMON
10 4 (1.88%) QRadar
10 4 (1.88%) vCenter Server
11 3 (1.41%) Argo
11 3 (1.41%) Rancher
11 3 (1.41%) Single Sign-On
12 2 (0.94%) Istio
12 2 (0.94%) vMotion
Vendors
1 21 (9.86%) F5
2 20 (9.39%) VMware
3 19 (8.92%) Cisco
4 18 (8.45%) Microsoft
5 17 (7.98%) Red Hat
5 17 (7.98%) Splunk
6 13 (6.10%) Palo Alto
6 13 (6.10%) Solace
7 10 (4.69%) Fortinet
7 10 (4.69%) SAP
8 9 (4.23%) CheckPoint
8 9 (4.23%) Nokia
9 8 (3.76%) Ericsson
9 8 (3.76%) SolarWinds
10 7 (3.29%) Actix
10 7 (3.29%) Juniper
10 7 (3.29%) Oracle
11 6 (2.82%) Databricks
11 6 (2.82%) Google
12 5 (2.35%) Zscaler