Period
to 12 April 2021

The following table provides summary statistics for permanent job vacancies advertised in the City of 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 12 April 2021 with a comparison to the same period in the previous 2 years.

High Availability
Central London > City of London
6 months to
12 Apr 2021
Same period 2020 Same period 2019
Rank 157 234 237
Rank change year-on-year +77 +3 -37
Permanent jobs citing High Availability 66 66 94
As % of all permanent jobs advertised in the City of London 1.37% 0.78% 0.92%
As % of the Processes & Methodologies category 1.44% 0.83% 0.99%
Number of salaries quoted 55 53 89
10th Percentile £47,400 £51,250 £47,500
25th Percentile £67,500 £62,500 £55,000
Median annual salary (50th Percentile) £75,000 £80,000 £76,500
Median % change year-on-year -6.25% +4.58% +9.29%
75th Percentile £93,750 £90,000 £101,250
90th Percentile £111,000 £97,000 £111,250
Central London median annual salary £75,000 £77,500 £75,000
% change year-on-year -3.23% +3.33% +20.00%

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 the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Permanent vacancies with a requirement for process or methodology skills 4,591 7,955 9,534
As % of all permanent IT jobs advertised in the City of London 95.17% 94.01% 92.93%
Number of salaries quoted 4,052 6,950 8,531
10th Percentile £43,750 £40,000 £36,250
25th Percentile £55,000 £51,250 £49,000
Median annual salary (50th Percentile) £72,500 £67,500 £65,000
Median % change year-on-year +7.41% +3.85% +5.69%
75th Percentile £89,000 £83,750 £82,500
90th Percentile £106,250 £98,875 £97,500
Central London median annual salary £70,000 £67,500 £65,000
% change year-on-year +3.70% +3.85% +8.33%

High Availability
Job Vacancy Trend in the City of London

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

Job vacancy trend for High Availability in the City of London

High Availability
Salary Trend in the City of London

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

Salary trend for High Availability in the City of London

High Availability
Salary Histogram in the City of London

Salary distribution for jobs citing High Availability in the City of London over the 6 months to 12 April 2021.

Salary histogram for High Availability in the City of London

For the 6 months to 12 April 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 City of London region with a requirement for High Availability.

1 30 (45.45%) AWS
2 29 (43.94%) DevOps
3 27 (40.91%) Azure
4 25 (37.88%) Python
5 24 (36.36%) Windows
5 24 (36.36%) Finance
6 23 (34.85%) PowerShell
7 22 (33.33%) Puppet
7 22 (33.33%) Ansible
8 21 (31.82%) Continuous Integration
9 20 (30.30%) Jenkins
9 20 (30.30%) Microsoft
10 19 (28.79%) VMware
10 19 (28.79%) Opscode Chef
11 18 (27.27%) Software Engineering
12 17 (25.76%) Migration
12 17 (25.76%) Active Directory
12 17 (25.76%) Linux
13 16 (24.24%) Cisco
13 16 (24.24%) Configuration Management
13 16 (24.24%) Clustering
13 16 (24.24%) Microservices
14 15 (22.73%) Fintech
14 15 (22.73%) Terraform
14 15 (22.73%) Infrastructure Automation
15 14 (21.21%) PostgreSQL
15 14 (21.21%) SQL
15 14 (21.21%) SaaS
16 13 (19.70%) Problem-Solving
16 13 (19.70%) Kubernetes

High Availability
Co-occurring IT Skills in the City of 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 4 (6.06%) SharePoint
2 3 (4.55%) Apache
3 1 (1.52%) ejabberd
3 1 (1.52%) IIS
3 1 (1.52%) nginx
3 1 (1.52%) Red Hat Fuse
3 1 (1.52%) Tomcat
Applications
1 4 (6.06%) Microsoft Office
Cloud Services
1 30 (45.45%) AWS
2 27 (40.91%) Azure
3 14 (21.21%) SaaS
4 12 (18.18%) Microsoft 365
5 9 (13.64%) IaaS
6 8 (12.12%) Serverless
7 7 (10.61%) Amazon EC2
7 7 (10.61%) Amazon S3
7 7 (10.61%) AWS Lambda
7 7 (10.61%) Azure Active Directory
8 6 (9.09%) AWS CloudFormation
8 6 (9.09%) Azure Data Factory
8 6 (9.09%) Azure Functions
9 5 (7.58%) GCP
9 5 (7.58%) PaaS
9 5 (7.58%) Stackdriver
10 1 (1.52%) Cloud Computing
10 1 (1.52%) GitHub
10 1 (1.52%) Google Workspace
10 1 (1.52%) Virtual Private Cloud
Communications & Networking
1 10 (15.15%) Firewall
1 10 (15.15%) VPN
2 8 (12.12%) Multicast
2 8 (12.12%) TCP/IP
2 8 (12.12%) tcpdump
3 5 (7.58%) DNS
4 4 (6.06%) DHCP
4 4 (6.06%) Internet
4 4 (6.06%) iSCSI
4 4 (6.06%) NAS
4 4 (6.06%) Network Security
5 1 (1.52%) Asterisk PBX
5 1 (1.52%) BGP
5 1 (1.52%) Diameter Protocol
5 1 (1.52%) LAN
5 1 (1.52%) PBX
5 1 (1.52%) SNMP
Database & Business Intelligence
1 14 (21.21%) PostgreSQL
2 12 (18.18%) Azure SQL Database
2 12 (18.18%) SQL Server
3 8 (12.12%) MongoDB
4 7 (10.61%) Amazon RDS
4 7 (10.61%) Relational Database
5 6 (9.09%) Amazon Redshift
5 6 (9.09%) InfluxDB
5 6 (9.09%) MySQL
5 6 (9.09%) RDBMS
5 6 (9.09%) SQL Server 2012
5 6 (9.09%) SQL Server Analysis Services
5 6 (9.09%) SQL Server Integration Services
5 6 (9.09%) SQL Server Reporting Services
6 4 (6.06%) Blockchain
7 3 (4.55%) Data Warehouse
8 2 (3.03%) NoSQL
8 2 (3.03%) Oracle Database
9 1 (1.52%) Oracle Database 12c
9 1 (1.52%) Oracle Exadata
Development Applications
1 20 (30.30%) Jenkins
2 7 (10.61%) Git (software)
3 6 (9.09%) Octopus Deploy
3 6 (9.09%) TeamCity
4 5 (7.58%) Bitbucket
5 4 (6.06%) JIRA
6 1 (1.52%) Atlassian Bamboo
6 1 (1.52%) Cucumber
6 1 (1.52%) Gatling
6 1 (1.52%) GitLab
6 1 (1.52%) JUnit
6 1 (1.52%) Mockito
6 1 (1.52%) Team Foundation Server
General
1 24 (36.36%) Finance
2 9 (13.64%) Banking
3 7 (10.61%) Law
4 2 (3.03%) Public Sector
5 1 (1.52%) Games
Job Titles
1 17 (25.76%) DevOps Engineer
2 9 (13.64%) Developer
2 9 (13.64%) Linux Engineer
3 8 (12.12%) Administrator
3 8 (12.12%) Architect
3 8 (12.12%) DBA
4 7 (10.61%) AWS DevOps
4 7 (10.61%) Senior DBA
5 6 (9.09%) Infrastructure Architect
5 6 (9.09%) Java Developer
5 6 (9.09%) Senior SQL DBA
5 6 (9.09%) Senior SQL Server DBA
5 6 (9.09%) SQL DBA
5 6 (9.09%) SQL Server DBA
6 5 (7.58%) DevOps Engineer - Fintech
6 5 (7.58%) Python Engineer
6 5 (7.58%) Python Software Engineer
6 5 (7.58%) Senior DevOps
6 5 (7.58%) Software Engineer
6 5 (7.58%) Windows Administrator
Libraries, Frameworks & Software Standards
1 12 (18.18%) Web Services
2 6 (9.09%) Elastic Stack
3 2 (3.03%) AngularJS
3 2 (3.03%) Middleware
3 2 (3.03%) Node.js
4 1 (1.52%) .NET
4 1 (1.52%) .NET Framework
4 1 (1.52%) Ajax
4 1 (1.52%) Apache Camel
4 1 (1.52%) GWT
4 1 (1.52%) HTML
4 1 (1.52%) HTML5
4 1 (1.52%) JMS
4 1 (1.52%) jQuery
4 1 (1.52%) JSF
4 1 (1.52%) OSGi
4 1 (1.52%) REST
4 1 (1.52%) RESTful
4 1 (1.52%) Spring
4 1 (1.52%) XMPP
Miscellaneous
1 16 (24.24%) Clustering
2 6 (9.09%) Enterprise Software
3 5 (7.58%) Fixed Income
3 5 (7.58%) Greenfield Project
3 5 (7.58%) Replication
4 2 (3.03%) Data Centre
4 2 (3.03%) Enterprise Storage
4 2 (3.03%) Mobile App
4 2 (3.03%) Private Cloud
4 2 (3.03%) User Experience
5 1 (1.52%) Algorithms
5 1 (1.52%) Analytical Skills
5 1 (1.52%) iSeries
5 1 (1.52%) Management Information System
Operating Systems
1 24 (36.36%) Windows
2 17 (25.76%) Linux
3 7 (10.61%) Red Hat Enterprise Linux
4 6 (9.09%) CentOS
4 6 (9.09%) Unix
4 6 (9.09%) Windows Server 2012
4 6 (9.09%) Windows Server 2016
4 6 (9.09%) Windows Server 2019
5 5 (7.58%) Ubuntu
6 4 (6.06%) Mac OS
6 4 (6.06%) Windows 10
6 4 (6.06%) Windows Server
6 4 (6.06%) Windows Server 2008
7 1 (1.52%) Debian
Processes & Methodologies
1 29 (43.94%) DevOps
2 21 (31.82%) Continuous Integration
3 18 (27.27%) Software Engineering
4 17 (25.76%) Migration
5 16 (24.24%) Configuration Management
5 16 (24.24%) Microservices
6 15 (22.73%) Fintech
6 15 (22.73%) Infrastructure Automation
7 13 (19.70%) Problem-Solving
8 12 (18.18%) Task Automation
9 10 (15.15%) Agile Software Development
9 10 (15.15%) ITIL
10 9 (13.64%) Deployment Automation
10 9 (13.64%) Infrastructure Engineering
10 9 (13.64%) Open Source
11 8 (12.12%) Capacity Planning
11 8 (12.12%) Continuous Delivery
11 8 (12.12%) Continuous Improvement
11 8 (12.12%) Infrastructure as Code
11 8 (12.12%) Performance Tuning
Programming Languages
1 25 (37.88%) Python
2 23 (34.85%) PowerShell
3 14 (21.21%) SQL
4 8 (12.12%) Java
5 7 (10.61%) C#
5 7 (10.61%) Ruby
6 6 (9.09%) T-SQL
7 5 (7.58%) Bash Shell
8 4 (6.06%) Solidity
9 3 (4.55%) JavaScript
9 3 (4.55%) PHP
10 2 (3.03%) C++
11 1 (1.52%) C
11 1 (1.52%) Go
11 1 (1.52%) Java 8
11 1 (1.52%) Perl
11 1 (1.52%) Shell Script
Qualifications
1 9 (13.64%) CCNA
1 9 (13.64%) Cisco Certification
2 7 (10.61%) Degree
2 7 (10.61%) Microsoft Certification
3 6 (9.09%) CISSP
3 6 (9.09%) MCSE
4 4 (6.06%) ITIL Certification
5 3 (4.55%) CCNP
6 2 (3.03%) Computer Science Degree
7 1 (1.52%) AWS Certification
7 1 (1.52%) CCA
7 1 (1.52%) CISM
7 1 (1.52%) Citrix Certification
7 1 (1.52%) RHCE
7 1 (1.52%) RHCSA
7 1 (1.52%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 7 (10.61%) QA
2 3 (4.55%) Cyber Essentials
2 3 (4.55%) Cyber Essentials PLUS
2 3 (4.55%) ISO/IEC 27001
3 1 (1.52%) GDPR
System Software
1 17 (25.76%) Active Directory
2 12 (18.18%) VMware Infrastructure
3 8 (12.12%) Docker
4 6 (9.09%) XenApp
4 6 (9.09%) XenDesktop
5 4 (6.06%) Hyper-V
6 1 (1.52%) iptables
6 1 (1.52%) Kamailio
6 1 (1.52%) KVM
6 1 (1.52%) Oracle RAC
6 1 (1.52%) Postfix
6 1 (1.52%) QEMU
6 1 (1.52%) vSphere
Systems Management
1 22 (33.33%) Ansible
1 22 (33.33%) Puppet
2 19 (28.79%) Opscode Chef
3 15 (22.73%) Terraform
4 13 (19.70%) Kubernetes
5 12 (18.18%) Grafana
6 11 (16.67%) Failover Clustering
7 9 (13.64%) Prometheus
8 6 (9.09%) SCCM
8 6 (9.09%) SCOM
9 5 (7.58%) Istio
10 4 (6.06%) Microsoft Data Protection Manager
10 4 (6.06%) Microsoft Intune
10 4 (6.06%) SCDPM
11 1 (1.52%) Foglight
11 1 (1.52%) Graphite
11 1 (1.52%) HAProxy
11 1 (1.52%) Oracle Enterprise Manager
11 1 (1.52%) Packer
11 1 (1.52%) ZABBIX
Vendors
1 20 (30.30%) Microsoft
2 19 (28.79%) VMware
3 16 (24.24%) Cisco
4 11 (16.67%) Citrix
5 10 (15.15%) HP
6 6 (9.09%) SolarWinds
7 5 (7.58%) Oracle
7 5 (7.58%) Sun
8 4 (6.06%) Aruba
8 4 (6.06%) Barracuda Networks
8 4 (6.06%) Synology
9 2 (3.03%) Google
9 2 (3.03%) Red Hat
10 1 (1.52%) IBM
10 1 (1.52%) Juniper
10 1 (1.52%) Mitel
10 1 (1.52%) NetApp
10 1 (1.52%) Nortel
10 1 (1.52%) SonicWALL
10 1 (1.52%) Veeam