Period
to 20 October 2021

The following table provides summary statistics for permanent job vacancies advertised in London with a requirement for High Availability skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited High Availability over the 6 months to 20 October 2021 with a comparison to the same period in the previous 2 years.

High Availability
England > London
6 months to
20 Oct 2021
Same period 2020 Same period 2019
Rank 267 262 235
Rank change year-on-year -5 -27 -3
Permanent jobs citing High Availability 685 223 824
As % of all permanent jobs advertised in London 1.35% 1.13% 1.52%
As % of the Processes & Methodologies category 1.42% 1.20% 1.62%
Number of salaries quoted 338 182 631
10th Percentile £46,000 £50,000 £46,250
25th Percentile £56,250 £60,000 £55,000
Median annual salary (50th Percentile) £70,000 £76,250 £67,500
Median % change year-on-year -8.20% +12.96% +3.85%
75th Percentile £92,000 £95,000 £85,000
90th Percentile £111,250 £119,500 £102,500
England median annual salary £60,000 £60,000 £57,500
% change year-on-year - +4.35% +4.55%

High Availability is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in London with a requirement for process or methodology skills.

All Process and Methodology Skills
London
Permanent vacancies with a requirement for process or methodology skills 48,358 18,553 50,781
As % of all permanent IT jobs advertised in London 95.53% 93.85% 93.59%
Number of salaries quoted 31,492 15,708 41,350
10th Percentile £42,500 £42,500 £36,250
25th Percentile £52,500 £52,500 £47,500
Median annual salary (50th Percentile) £70,000 £70,000 £65,000
Median % change year-on-year - +7.69% +4.00%
75th Percentile £90,000 £86,250 £82,500
90th Percentile £107,500 £107,500 £100,000
England median annual salary £58,000 £55,000 £52,500
% change year-on-year +5.45% +4.76% -

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
Salary Trend in London

3-month moving average salary quoted in jobs citing High Availability in London.

Salary trend for High Availability in London

High Availability
Salary Histogram in London

Salary distribution for jobs citing High Availability in London over the 6 months to 20 October 2021.

Salary histogram for High Availability in London

High Availability
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing High Availability within the London region over the 6 months to 20 October 2021. 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
West London +10 98 £66,250 -26.39% 6
Central London -33 70 £77,500 +6.90% 23
East London -10 15 £38,500 -26.67% 2
South London -22 14 £72,500 +43.56% 1
High Availability
England

For the 6 months to 20 October 2021, IT jobs citing High Availability also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the London region with a requirement for High Availability.

1 334 (48.76%) Agile Software Development
2 279 (40.73%) AWS
3 241 (35.18%) JavaScript
4 228 (33.28%) Python
5 218 (31.82%) Microservices
6 215 (31.39%) DevOps
7 205 (29.93%) React
8 199 (29.05%) Software Engineering
9 182 (26.57%) Java
10 181 (26.42%) Docker
11 175 (25.55%) Kubernetes
12 174 (25.40%) Continuous Integration
13 166 (24.23%) TDD
14 154 (22.48%) Azure
14 154 (22.48%) AngularJS
15 145 (21.17%) SQL
16 139 (20.29%) C#
17 138 (20.15%) BDD
17 138 (20.15%) Social Skills
18 131 (19.12%) REST
19 125 (18.25%) Web Services
19 125 (18.25%) Finance
20 124 (18.10%) Linux
21 123 (17.96%) SQL Server
22 121 (17.66%) Jenkins
23 118 (17.23%) Node.js
23 118 (17.23%) Disaster Recovery
24 113 (16.50%) Git (software)
25 111 (16.20%) Microsoft
25 111 (16.20%) Full Stack Development

High Availability
Co-occurring IT Skills in London by Category

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

Application Platforms
1 40 (5.84%) Elasticsearch
2 28 (4.09%) Confluence
3 25 (3.65%) Apache
4 19 (2.77%) IIS
4 19 (2.77%) nginx
5 9 (1.31%) SharePoint
5 9 (1.31%) Traefik
6 7 (1.02%) MS Exchange
7 4 (0.58%) Apache Pulsar
8 3 (0.44%) Exchange Server 2010
8 3 (0.44%) Tomcat
9 2 (0.29%) GemFire
9 2 (0.29%) Red Hat Fuse
9 2 (0.29%) WebLogic
10 1 (0.15%) Apache Spark
10 1 (0.15%) CMS
10 1 (0.15%) ejabberd
10 1 (0.15%) Ethereum
10 1 (0.15%) Exchange Server 2013
10 1 (0.15%) OpenStack
Applications
1 11 (1.61%) Microsoft Office
2 9 (1.31%) Microsoft Excel
3 7 (1.02%) Siemens NX
4 1 (0.15%) Chatbot
4 1 (0.15%) GIMP
4 1 (0.15%) Photoshop
Business Applications
1 7 (1.02%) Teamcenter
2 4 (0.58%) Distributed Ledger
2 4 (0.58%) R3 Corda
3 3 (0.44%) Payment Gateway
4 2 (0.29%) Dynamics AX
4 2 (0.29%) NetSuite
Cloud Services
1 279 (40.73%) AWS
2 154 (22.48%) Azure
3 100 (14.60%) Serverless
4 89 (12.99%) GitHub
5 73 (10.66%) Amazon EC2
6 71 (10.36%) AWS Lambda
7 66 (9.64%) AWS CloudFormation
8 64 (9.34%) GCP
8 64 (9.34%) SaaS
9 60 (8.76%) Amazon SQS
10 53 (7.74%) Amazon S3
11 35 (5.11%) Amazon Cognito
11 35 (5.11%) Microsoft 365
12 29 (4.23%) Amazon EKS
13 24 (3.50%) Power Platform
14 19 (2.77%) Amazon CloudWatch
14 19 (2.77%) npm
15 18 (2.63%) Cloud Computing
16 16 (2.34%) Slack
17 14 (2.04%) PaaS
Communications & Networking
1 110 (16.06%) HTTP
2 63 (9.20%) Broadband
3 52 (7.59%) Firewall
4 36 (5.26%) LAN
5 34 (4.96%) DNS
5 34 (4.96%) VPN
6 33 (4.82%) WAN
7 31 (4.53%) TCP/IP
8 25 (3.65%) DHCP
9 18 (2.63%) FTP
10 16 (2.34%) SAN
11 15 (2.19%) IP Telephony
12 14 (2.04%) Internet
12 14 (2.04%) SSL
13 12 (1.75%) IPsec
13 12 (1.75%) VLAN
14 11 (1.61%) BGP
14 11 (1.61%) SNMP
15 8 (1.17%) IPv6
15 8 (1.17%) OSPF
Database & Business Intelligence
1 123 (17.96%) SQL Server
2 110 (16.06%) Redis
3 86 (12.55%) NoSQL
4 84 (12.26%) MySQL
5 72 (10.51%) Relational Database
6 71 (10.36%) PostgreSQL
7 53 (7.74%) Amazon Aurora
7 53 (7.74%) Amazon DynamoDB
8 37 (5.40%) Amazon RDS
8 37 (5.40%) MongoDB
9 24 (3.50%) Amazon Redshift
9 24 (3.50%) Power BI
10 23 (3.36%) SQL Server Integration Services
11 17 (2.48%) Tableau
12 16 (2.34%) SQL Server Reporting Services
13 15 (2.19%) Data Warehouse
14 14 (2.04%) Apache Cassandra
14 14 (2.04%) Azure SQL Database
14 14 (2.04%) MariaDB
14 14 (2.04%) RDBMS
Development Applications
1 121 (17.66%) Jenkins
2 113 (16.50%) Git (software)
3 88 (12.85%) GitLab
4 67 (9.78%) JIRA
5 63 (9.20%) Selenium
6 50 (7.30%) webpack
7 38 (5.55%) Cypress.io
8 36 (5.26%) NUnit
8 36 (5.26%) Postman
9 32 (4.67%) Appium
9 32 (4.67%) SonarQube
9 32 (4.67%) WebDriver
10 30 (4.38%) Log4Net
10 30 (4.38%) SpecFlow
11 21 (3.07%) Jasmine
12 19 (2.77%) Grunt
12 19 (2.77%) gulp
12 19 (2.77%) JUnit
12 19 (2.77%) Mocha
12 19 (2.77%) Mockito
General
1 138 (20.15%) Social Skills
2 125 (18.25%) Finance
3 63 (9.20%) Analytical Skills
4 54 (7.88%) Banking
5 42 (6.13%) Telecoms
6 27 (3.94%) Inclusion and Diversity
7 24 (3.50%) Front Office
7 24 (3.50%) Games
8 19 (2.77%) Influencing Skills
9 16 (2.34%) Law
9 16 (2.34%) Legal
10 12 (1.75%) Retail
11 9 (1.31%) Manufacturing
12 8 (1.17%) Investment Banking
13 7 (1.02%) Marketing
13 7 (1.02%) Public Sector
14 6 (0.88%) Documentation Skills
15 5 (0.73%) Advertising
15 5 (0.73%) Presentation Skills
16 3 (0.44%) Organisational Skills
Job Titles
1 195 (28.47%) Developer
2 81 (11.82%) Software Engineer
3 70 (10.22%) Senior Developer
4 55 (8.03%) .NET Developer
5 50 (7.30%) DBA
6 43 (6.28%) DevOps Engineer
7 38 (5.55%) Architect
8 36 (5.26%) Java Developer
9 34 (4.96%) AWS Engineer
10 33 (4.82%) Senior .NET Developer
11 32 (4.67%) Quality Engineer
12 30 (4.38%) Senior Software Engineer
13 29 (4.23%) Administrator
13 29 (4.23%) Solutions Architect
14 26 (3.80%) Software Developer
15 25 (3.65%) Full Stack Developer
16 21 (3.07%) AWS Software Engineer
17 20 (2.92%) Platform Engineer
17 20 (2.92%) Senior Software Developer
18 19 (2.77%) SQL DBA
Libraries, Frameworks & Software Standards
1 205 (29.93%) React
2 154 (22.48%) AngularJS
3 131 (19.12%) REST
4 125 (18.25%) Web Services
5 118 (17.23%) Node.js
6 107 (15.62%) .NET
7 85 (12.41%) HTML
8 77 (11.24%) CSS
8 77 (11.24%) Spring
9 70 (10.22%) Kafka
10 55 (8.03%) RabbitMQ
11 53 (7.74%) .NET Core
12 50 (7.30%) Spring Boot
13 47 (6.86%) HTML5
13 47 (6.86%) Redux
14 46 (6.72%) RESTful
15 43 (6.28%) JSON
16 42 (6.13%) Vue.js
17 41 (5.99%) XML
18 40 (5.84%) CSS3
Miscellaneous
1 54 (7.88%) Clustering
2 44 (6.42%) Social Media
3 41 (5.99%) Algorithms
3 41 (5.99%) Video\Live Streaming
4 33 (4.82%) Mobile App
5 26 (3.80%) Blog
5 26 (3.80%) Cloud Native
5 26 (3.80%) Management Information System
6 25 (3.65%) Data Centre
6 25 (3.65%) Public Cloud
7 22 (3.21%) Digital Media
8 21 (3.07%) Enterprise Software
9 20 (2.92%) Video on Demand
10 18 (2.63%) Over-the-Top Content
10 18 (2.63%) Xbox
11 17 (2.48%) Data Structures
12 16 (2.34%) Replication
12 16 (2.34%) User Experience
13 11 (1.61%) CMDB
14 10 (1.46%) Private Cloud
Operating Systems
1 124 (18.10%) Linux
2 60 (8.76%) Windows
3 46 (6.72%) Android
4 43 (6.28%) Unix
5 33 (4.82%) Apple iOS
6 28 (4.09%) Windows Server
7 23 (3.36%) CentOS
8 13 (1.90%) Mac OS
9 11 (1.61%) Windows Server 2008
10 9 (1.31%) Red Hat Enterprise Linux
11 6 (0.88%) Mac OS X
11 6 (0.88%) Windows Server 2019
12 5 (0.73%) Windows 10
12 5 (0.73%) Windows Server 2012
13 4 (0.58%) Tizen
13 4 (0.58%) webOS
14 3 (0.44%) Debian
14 3 (0.44%) Ubuntu
14 3 (0.44%) Windows Server 2003
15 2 (0.29%) zOS
Processes & Methodologies
1 334 (48.76%) Agile Software Development
2 218 (31.82%) Microservices
3 215 (31.39%) DevOps
4 199 (29.05%) Software Engineering
5 174 (25.40%) Continuous Integration
6 166 (24.23%) TDD
7 138 (20.15%) BDD
8 118 (17.23%) Disaster Recovery
9 111 (16.20%) Full Stack Development
10 105 (15.33%) Scrum
11 103 (15.04%) Test Automation
12 100 (14.60%) Open Source
13 99 (14.45%) Mentoring
14 95 (13.87%) Problem-Solving
15 81 (11.82%) Multithreading
16 75 (10.95%) Continuous Deployment
17 74 (10.80%) Low Latency
18 72 (10.51%) Deployment Automation
19 71 (10.36%) Pair Programming
20 69 (10.07%) Performance Tuning
Programming Languages
1 241 (35.18%) JavaScript
2 228 (33.28%) Python
3 182 (26.57%) Java
4 145 (21.17%) SQL
5 139 (20.29%) C#
6 102 (14.89%) TypeScript
7 66 (9.64%) PowerShell
8 46 (6.72%) Go
9 33 (4.82%) Ruby
10 29 (4.23%) Scala
11 27 (3.94%) Bash Shell
12 23 (3.36%) ES6
13 20 (2.92%) Java 8
14 19 (2.77%) PHP
15 15 (2.19%) C
16 14 (2.04%) C++
16 14 (2.04%) Shell Script
17 13 (1.90%) R
18 12 (1.75%) T-SQL
19 11 (1.61%) Perl
Qualifications
1 60 (8.76%) Degree
2 25 (3.65%) Security Cleared
3 24 (3.50%) Computer Science Degree
3 24 (3.50%) SC Cleared
4 15 (2.19%) Cisco Certification
5 11 (1.61%) AWS Certification
5 11 (1.61%) CCNA
6 9 (1.31%) Microsoft Certification
7 8 (1.17%) CISM
7 8 (1.17%) CISSP
7 8 (1.17%) MCSA
8 7 (1.02%) CCNP
8 7 (1.02%) MCSE
8 7 (1.02%) NVQ Level 4
9 5 (0.73%) DBS Check
10 4 (0.58%) CCDP
10 4 (0.58%) CCIE
10 4 (0.58%) ISTQB
10 4 (0.58%) ISTQB Foundation Certification
11 3 (0.44%) ITIL Certification
Quality Assurance & Compliance
1 81 (11.82%) QA
2 20 (2.92%) SLA
3 9 (1.31%) PCI DSS
4 7 (1.02%) GDPR
5 4 (0.58%) Data Quality
6 3 (0.44%) Accessibility
7 1 (0.15%) ISO 22301
7 1 (0.15%) ISO/IEC 20000
System Software
1 181 (26.42%) Docker
2 46 (6.72%) Active Directory
3 30 (4.38%) VMware Infrastructure
4 15 (2.19%) iptables
5 14 (2.04%) Virtual Machines
6 12 (1.75%) Hyper-V
7 4 (0.58%) Kamailio
8 3 (0.44%) KVM
8 3 (0.44%) OpenSIPS
8 3 (0.44%) QEMU
8 3 (0.44%) vCloud
8 3 (0.44%) VMware ESXi
9 2 (0.29%) Forefront TMG
9 2 (0.29%) NFS
9 2 (0.29%) Oracle RAC
9 2 (0.29%) Terminal Services
10 1 (0.15%) Firmware
10 1 (0.15%) Postfix
10 1 (0.15%) VMware Workstation
10 1 (0.15%) XenApp
Systems Management
1 175 (25.55%) Kubernetes
2 86 (12.55%) Terraform
3 73 (10.66%) Grafana
4 72 (10.51%) Ansible
5 42 (6.13%) Prometheus
6 36 (5.26%) Graphite
7 33 (4.82%) Opsgenie
8 30 (4.38%) Graylog
8 30 (4.38%) Opscode Chef
9 28 (4.09%) Puppet
10 27 (3.94%) Failover Clustering
11 19 (2.77%) Nagios
12 16 (2.34%) Consul
13 15 (2.19%) Istio
13 15 (2.19%) ZABBIX
14 14 (2.04%) Packer
15 10 (1.46%) Icinga
15 10 (1.46%) Kibana
15 10 (1.46%) logstash
15 10 (1.46%) Rancher
Vendors
1 111 (16.20%) Microsoft
2 52 (7.59%) Google
3 48 (7.01%) Oracle
4 33 (4.82%) VMware
5 31 (4.53%) Cisco
6 20 (2.92%) Red Hat
7 16 (2.34%) Apple
8 13 (1.90%) Juniper
9 11 (1.61%) Splunk
10 9 (1.31%) Atlassian
11 8 (1.17%) NetApp
11 8 (1.17%) RedGate
12 7 (1.02%) Percona
12 7 (1.02%) SAP
12 7 (1.02%) ServiceNow
13 6 (0.88%) Dell
13 6 (0.88%) SolarWinds
13 6 (0.88%) Spotify
13 6 (0.88%) TIBCO
14 5 (0.73%) SonicWALL