Period
to 21 April 2021

The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for JSON skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited JSON over the 6 months to 21 April 2021 with a comparison to the same period in the previous 2 years.

JSON
Central London > City of London
6 months to
21 Apr 2021
Same period 2020 Same period 2019
Rank 133 156 191
Rank change year-on-year +23 +35 -27
Permanent jobs citing JSON 105 127 154
As % of all permanent jobs advertised in the City of London 2.14% 1.55% 1.51%
As % of the Libraries, Frameworks & Software Standards category 5.19% 4.05% 3.60%
Number of salaries quoted 93 116 138
10th Percentile £42,750 £43,375 £42,500
25th Percentile £56,250 £46,250 £54,000
Median annual salary (50th Percentile) £67,500 £68,750 £71,250
Median % change year-on-year -1.82% -3.51% +18.75%
75th Percentile £90,000 £85,000 £86,250
90th Percentile £95,000 £112,500 £95,000
Central London median annual salary £72,500 £70,000 £72,500
% change year-on-year +3.57% -3.45% +20.83%

JSON is in the Software Libraries and Frameworks 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 technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
City of London
Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 2,023 3,136 4,274
As % of all permanent IT jobs advertised in the City of London 41.24% 38.39% 41.87%
Number of salaries quoted 1,833 2,791 3,850
10th Percentile £45,000 £45,000 £42,500
25th Percentile £57,500 £53,750 £52,500
Median annual salary (50th Percentile) £75,000 £70,000 £67,500
Median % change year-on-year +7.14% +3.70% +3.85%
75th Percentile £88,750 £85,000 £82,500
90th Percentile £105,000 £97,500 £95,000
Central London median annual salary £72,500 £70,000 £67,500
% change year-on-year +3.57% +3.70% +8.00%

JSON
Job Vacancy Trend in the City of London

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

Job vacancy trend for JSON in the City of London

JSON
Salary Trend in the City of London

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

Salary trend for JSON in the City of London

JSON
Salary Histogram in the City of London

Salary distribution for jobs citing JSON in the City of London over the 6 months to 21 April 2021.

Salary histogram for JSON in the City of London

For the 6 months to 21 April 2021, IT jobs citing JSON 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 JSON.

1 49 (46.67%) REST
2 45 (42.86%) Agile Software Development
3 44 (41.90%) JavaScript
4 39 (37.14%) Finance
5 37 (35.24%) Azure
5 37 (35.24%) DevOps
6 35 (33.33%) C#
7 33 (31.43%) SQL
8 30 (28.57%) .NET
9 29 (27.62%) SQL Server
10 26 (24.76%) HTML
10 26 (24.76%) Test Automation
11 25 (23.81%) XML
11 25 (23.81%) Fintech
12 24 (22.86%) AngularJS
12 24 (22.86%) OO
12 24 (22.86%) TDD
13 23 (21.90%) Python
13 23 (21.90%) CSS
14 22 (20.95%) Git (software)
15 20 (19.05%) Java
16 19 (18.10%) Banking
16 19 (18.10%) Sass
17 18 (17.14%) MVC
17 18 (17.14%) Scrum
17 18 (17.14%) Web Services
17 18 (17.14%) AWS
18 17 (16.19%) Microservices
18 17 (16.19%) Redux
19 16 (15.24%) React

JSON
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 6 (5.71%) CMS
2 4 (3.81%) Elasticsearch
2 4 (3.81%) EPiServer
3 3 (2.86%) WordPress
4 2 (1.90%) Cloud Foundry
4 2 (1.90%) Drupal
4 2 (1.90%) Tomcat
5 1 (0.95%) Confluence
5 1 (0.95%) IIS
Applications
1 2 (1.90%) Microsoft Office
2 1 (0.95%) Microsoft Excel
Cloud Services
1 37 (35.24%) Azure
2 18 (17.14%) AWS
3 6 (5.71%) GCP
4 5 (4.76%) npm
5 4 (3.81%) GitHub
5 4 (3.81%) SaaS
6 3 (2.86%) Azure Active Directory
6 3 (2.86%) Microsoft 365
6 3 (2.86%) NuGet
7 2 (1.90%) Azure Cosmos DB
7 2 (1.90%) CloudBees
8 1 (0.95%) Apigee
8 1 (0.95%) Azure Data Factory
8 1 (0.95%) Azure Logic Apps
8 1 (0.95%) Dynamics 365
8 1 (0.95%) Power Automate
8 1 (0.95%) Power Platform
8 1 (0.95%) PowerApps
8 1 (0.95%) Salesforce Sales Cloud
8 1 (0.95%) Veeva
Communications & Networking
1 10 (9.52%) Firewall
1 10 (9.52%) HTTP
2 9 (8.57%) LAN
2 9 (8.57%) WAN
3 7 (6.67%) Cisco Firepower
3 7 (6.67%) Cisco ISE
3 7 (6.67%) Ethernet
3 7 (6.67%) Network Security
3 7 (6.67%) SD-WAN
4 4 (3.81%) F5 BIG-IP GTM
4 4 (3.81%) F5 BIG-IP LTM
5 3 (2.86%) Cisco IOS
6 2 (1.90%) Cisco ASA
6 2 (1.90%) Cisco Nexus
6 2 (1.90%) Cisco Wireless
6 2 (1.90%) Multicast
6 2 (1.90%) NX-OS
6 2 (1.90%) VXLAN
6 2 (1.90%) Wi-Fi
6 2 (1.90%) Wireless
Database & Business Intelligence
1 29 (27.62%) SQL Server
2 13 (12.38%) MongoDB
3 11 (10.48%) Relational Database
4 10 (9.52%) NoSQL
5 9 (8.57%) MySQL
6 7 (6.67%) RDBMS
7 5 (4.76%) Azure SQL Database
7 5 (4.76%) Big Data
8 4 (3.81%) Hadoop
9 2 (1.90%) Data Warehouse
9 2 (1.90%) PostgreSQL
9 2 (1.90%) Redis
9 2 (1.90%) SQL Server 2012
10 1 (0.95%) Aerospike
10 1 (0.95%) Amazon DynamoDB
10 1 (0.95%) Data Mining
10 1 (0.95%) Oracle Database
10 1 (0.95%) Power BI
10 1 (0.95%) SQL Server 2014
10 1 (0.95%) SQL Server Integration Services
Development Applications
1 22 (20.95%) Git (software)
2 16 (15.24%) webpack
3 11 (10.48%) Team Foundation Server
4 8 (7.62%) Jenkins
4 8 (7.62%) Selenium
5 7 (6.67%) Visual Studio
6 6 (5.71%) JIRA
6 6 (5.71%) Octopus Deploy
6 6 (5.71%) TeamCity
6 6 (5.71%) Visual Studio Coded UI
7 5 (4.76%) WebDriver
8 4 (3.81%) Atlassian Bamboo
8 4 (3.81%) JMeter
8 4 (3.81%) JUnit
8 4 (3.81%) REST Assured
9 3 (2.86%) Cucumber
10 2 (1.90%) Robot Framework
10 2 (1.90%) Sonatype Nexus
10 2 (1.90%) SpecFlow
10 2 (1.90%) Visual Studio Team System
General
1 39 (37.14%) Finance
2 19 (18.10%) Banking
3 7 (6.67%) Advertising
4 6 (5.71%) Marketing
5 3 (2.86%) Legal
6 1 (0.95%) Games
6 1 (0.95%) Investment Banking
6 1 (0.95%) Law
Job Titles
1 39 (37.14%) Developer
2 15 (14.29%) .NET Developer
3 13 (12.38%) C# Developer
4 10 (9.52%) Architect
5 8 (7.62%) C# .NET Developer
5 8 (7.62%) Full Stack Developer
5 8 (7.62%) Salesforce Developer
6 7 (6.67%) Analyst
6 7 (6.67%) Data Engineer
6 7 (6.67%) Network Architect
7 6 (5.71%) Web Engineer
8 5 (4.76%) Business Analyst
8 5 (4.76%) Derivatives Business Analyst
8 5 (4.76%) Software Engineer
9 4 (3.81%) Python Developer
9 4 (3.81%) Senior Developer
10 3 (2.86%) Front End Developer (Client-Side Developer)
10 3 (2.86%) Head of Development
10 3 (2.86%) QA Engineer
10 3 (2.86%) Test Leader
Libraries, Frameworks & Software Standards
1 49 (46.67%) REST
2 30 (28.57%) .NET
3 26 (24.76%) HTML
4 25 (23.81%) XML
5 24 (22.86%) AngularJS
6 23 (21.90%) CSS
7 19 (18.10%) Sass
8 18 (17.14%) Web Services
9 17 (16.19%) Redux
10 16 (15.24%) React
11 15 (14.29%) .NET Framework
11 15 (14.29%) SOAP
12 14 (13.33%) ASP.NET Web API
13 12 (11.43%) .NET Core
14 11 (10.48%) ASP.NET
15 10 (9.52%) jQuery
16 9 (8.57%) ASP.NET MVC
16 9 (8.57%) Node.js
16 9 (8.57%) RESTful
17 7 (6.67%) Entity Framework
Miscellaneous
1 9 (8.57%) Data Centre
2 7 (6.67%) Public Cloud
3 6 (5.71%) User Experience
4 5 (4.76%) Derivative
4 5 (4.76%) OTC Derivatives
5 3 (2.86%) Mobile App
6 2 (1.90%) Foreign Exchange (FX)
7 1 (0.95%) Linux Command Line
7 1 (0.95%) Organisational Skills
7 1 (0.95%) Reinsurance
7 1 (0.95%) Social Media
Operating Systems
1 9 (8.57%) Linux
2 8 (7.62%) Windows
3 5 (4.76%) Unix
4 2 (1.90%) Windows Server
5 1 (0.95%) Android
5 1 (0.95%) Apple iOS
5 1 (0.95%) Windows 10
5 1 (0.95%) Windows Server 2012
5 1 (0.95%) Windows Server 2016
5 1 (0.95%) Windows Server 2019
Processes & Methodologies
1 45 (42.86%) Agile Software Development
2 37 (35.24%) DevOps
3 26 (24.76%) Test Automation
4 25 (23.81%) Fintech
5 24 (22.86%) OO
5 24 (22.86%) TDD
6 18 (17.14%) MVC
6 18 (17.14%) Scrum
7 17 (16.19%) Microservices
8 15 (14.29%) Asset Management
9 14 (13.33%) BDD
10 12 (11.43%) Software Engineering
11 11 (10.48%) Continuous Integration
11 11 (10.48%) OOP
11 11 (10.48%) SDLC
11 11 (10.48%) SOLID
12 10 (9.52%) API Integration
13 9 (8.57%) Data Modelling
13 9 (8.57%) SDET
13 9 (8.57%) UML
Programming Languages
1 44 (41.90%) JavaScript
2 35 (33.33%) C#
3 33 (31.43%) SQL
4 23 (21.90%) Python
5 20 (19.05%) Java
6 6 (5.71%) PHP
6 6 (5.71%) XPath
7 5 (4.76%) T-SQL
7 5 (4.76%) TypeScript
8 4 (3.81%) PowerShell
9 2 (1.90%) Apex Code
9 2 (1.90%) Kotlin
9 2 (1.90%) PHP 7
9 2 (1.90%) Ruby
9 2 (1.90%) SOQL
10 1 (0.95%) Apple Swift
10 1 (0.95%) Bash Shell
10 1 (0.95%) ES6
10 1 (0.95%) PL/SQL
10 1 (0.95%) VB
Qualifications
1 7 (6.67%) SC Cleared
1 7 (6.67%) Security Cleared
2 5 (4.76%) Degree
3 2 (1.90%) Cisco Certification
4 1 (0.95%) Computer Science Degree
Quality Assurance & Compliance
1 15 (14.29%) QA
System Software
1 7 (6.67%) VMware Infrastructure
1 7 (6.67%) VMware NSX
2 6 (5.71%) Docker
3 3 (2.86%) Active Directory
Systems Management
1 9 (8.57%) Ansible
1 9 (8.57%) Terraform
2 7 (6.67%) FortiGate
3 2 (1.90%) Kubernetes
3 2 (1.90%) Microsoft Intune
3 2 (1.90%) Opscode Chef
3 2 (1.90%) Puppet
4 1 (0.95%) MIIS
Vendors
1 14 (13.33%) Microsoft
2 10 (9.52%) Cisco
2 10 (9.52%) Salesforce.com
2 10 (9.52%) SolarWinds
3 9 (8.57%) Fortinet
4 8 (7.62%) VMware
5 7 (6.67%) CA
6 5 (4.76%) CheckPoint
7 4 (3.81%) F5
7 4 (3.81%) Google
8 2 (1.90%) Arista
8 2 (1.90%) Blue Coat
8 2 (1.90%) New Relic
8 2 (1.90%) Oracle
8 2 (1.90%) Palo Alto
8 2 (1.90%) Remedy
8 2 (1.90%) Riverbed
8 2 (1.90%) Splunk
9 1 (0.95%) Sophos
9 1 (0.95%) UiPath