Period
to 25 September 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 25 September 2021 with a comparison to the same period in the previous 2 years.

JSON
Central London > City of London
6 months to
25 Sep 2021
Same period 2020 Same period 2019
Rank 136 120 186
Rank change year-on-year -16 +66 -28
Permanent jobs citing JSON 120 85 155
As % of all permanent jobs advertised in the City of London 2.04% 2.24% 1.53%
As % of the Libraries, Frameworks & Software Standards category 5.06% 5.15% 3.93%
Number of salaries quoted 110 65 120
10th Percentile £43,375 £51,250 £44,000
25th Percentile £53,750 £62,500 £53,625
Median annual salary (50th Percentile) £65,000 £90,000 £71,250
Median % change year-on-year -27.78% +26.32% +3.64%
75th Percentile £95,000 £95,000 £86,250
90th Percentile £121,250 £102,500 £92,625
Central London median annual salary £62,500 £90,000 £70,000
% change year-on-year -30.56% +28.57% -

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 2,372 1,652 3,940
As % of all permanent IT jobs advertised in the City of London 40.24% 43.44% 38.99%
Number of salaries quoted 2,152 1,446 3,577
10th Percentile £47,500 £47,500 £44,400
25th Percentile £57,500 £57,500 £55,000
Median annual salary (50th Percentile) £75,000 £70,000 £70,000
Median % change year-on-year +7.14% - +7.69%
75th Percentile £95,000 £86,250 £85,000
90th Percentile £110,000 £102,500 £95,000
Central London median annual salary £75,000 £70,000 £70,000
% change year-on-year +7.14% - +7.69%

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 25 September 2021.

Salary histogram for JSON in the City of London

For the 6 months to 25 September 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 65 (54.17%) Azure
2 64 (53.33%) SQL
3 57 (47.50%) Agile Software Development
4 55 (45.83%) DevOps
5 51 (42.50%) C#
6 48 (40.00%) .NET
7 42 (35.00%) OO
7 42 (35.00%) Finance
8 39 (32.50%) XML
9 38 (31.67%) JavaScript
10 36 (30.00%) SQL Server
11 32 (26.67%) MVC
12 30 (25.00%) HTML
12 30 (25.00%) Git (software)
13 29 (24.17%) CSS
13 29 (24.17%) Microsoft
14 28 (23.33%) Web Services
14 28 (23.33%) REST
15 26 (21.67%) JIRA
16 24 (20.00%) Test Automation
17 23 (19.17%) ASP.NET
17 23 (19.17%) Scrum
17 23 (19.17%) SDLC
18 22 (18.33%) React
18 22 (18.33%) Java
19 21 (17.50%) OOP
19 21 (17.50%) Social Skills
20 20 (16.67%) .NET Framework
21 19 (15.83%) SOLID
21 19 (15.83%) Full Stack Development

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 10 (8.33%) IIS
2 8 (6.67%) CMS
2 8 (6.67%) EPiServer
3 3 (2.50%) Apache Spark
3 3 (2.50%) Confluence
4 2 (1.67%) Apache
4 2 (1.67%) Apache Airflow
4 2 (1.67%) Cloud Foundry
5 1 (0.83%) Appian
5 1 (0.83%) Jetty
5 1 (0.83%) nginx
5 1 (0.83%) WebSphere
Applications
1 18 (15.00%) Microsoft Office
2 3 (2.50%) Zeplin
3 1 (0.83%) Microsoft Excel
3 1 (0.83%) Microsoft PowerPoint
3 1 (0.83%) MS Visio
Business Applications
1 1 (0.83%) Oracle BPM
1 1 (0.83%) Relativity
Cloud Services
1 65 (54.17%) Azure
2 16 (13.33%) Power Platform
3 14 (11.67%) Azure Active Directory
4 13 (10.83%) AWS
5 12 (10.00%) GitHub
6 10 (8.33%) Azure Logic Apps
6 10 (8.33%) Serverless
7 7 (5.83%) SaaS
8 6 (5.00%) Azure Pipelines
8 6 (5.00%) GCP
8 6 (5.00%) IaaS
8 6 (5.00%) Microsoft 365
9 5 (4.17%) PaaS
10 3 (2.50%) Amazon S3
10 3 (2.50%) Amazon SQS
10 3 (2.50%) AWS Lambda
10 3 (2.50%) BrowserStack
10 3 (2.50%) Cloud Computing
10 3 (2.50%) Dynamics 365
11 2 (1.67%) Azure Data Factory
Communications & Networking
1 10 (8.33%) FTP
1 10 (8.33%) HTTP
2 5 (4.17%) Firewall
2 5 (4.17%) Network Security
3 4 (3.33%) Cisco Firepower
3 4 (3.33%) Cisco ISE
3 4 (3.33%) Ethernet
3 4 (3.33%) LAN
3 4 (3.33%) SD-WAN
3 4 (3.33%) WAN
4 2 (1.67%) VPN
5 1 (0.83%) Cisco IOS
5 1 (0.83%) Internet
5 1 (0.83%) SAN
5 1 (0.83%) SMTP
Database & Business Intelligence
1 36 (30.00%) SQL Server
2 16 (13.33%) Power BI
3 10 (8.33%) Azure SQL Database
3 10 (8.33%) MongoDB
4 9 (7.50%) Hadoop
5 8 (6.67%) Big Data
6 7 (5.83%) Data Warehouse
6 7 (5.83%) Relational Database
7 6 (5.00%) Tableau
8 4 (3.33%) RDBMS
9 3 (2.50%) MySQL
9 3 (2.50%) NoSQL
9 3 (2.50%) Parquet
9 3 (2.50%) PostgreSQL
9 3 (2.50%) SQL Server 2012
10 2 (1.67%) Amazon Athena
10 2 (1.67%) Data Lake
10 2 (1.67%) Looker
10 2 (1.67%) Qlik Sense
10 2 (1.67%) SQL Server 2014
Development Applications
1 30 (25.00%) Git (software)
2 26 (21.67%) JIRA
3 17 (14.17%) Jenkins
4 12 (10.00%) JUnit
4 12 (10.00%) Selenium
5 9 (7.50%) Atlassian Bamboo
5 9 (7.50%) JMeter
5 9 (7.50%) Visual Studio
6 7 (5.83%) Cucumber
6 7 (5.83%) WebDriver
7 5 (4.17%) REST Assured
8 4 (3.33%) Jasmine
8 4 (3.33%) Maven
8 4 (3.33%) Mocha
9 3 (2.50%) Octopus Deploy
10 2 (1.67%) Bitbucket
10 2 (1.67%) Gradle
10 2 (1.67%) Robot Framework
10 2 (1.67%) TeamCity
10 2 (1.67%) Visual Studio Team System
General
1 42 (35.00%) Finance
2 21 (17.50%) Social Skills
3 18 (15.00%) Banking
3 18 (15.00%) Marketing
4 14 (11.67%) Investment Banking
5 7 (5.83%) Legal
5 7 (5.83%) Pharmaceutical
6 6 (5.00%) Presentation Skills
7 5 (4.17%) Analytical Skills
8 4 (3.33%) Back Office
9 3 (2.50%) Advertising
10 2 (1.67%) Automotive
10 2 (1.67%) Law
10 2 (1.67%) Public Sector
11 1 (0.83%) Documentation Skills
11 1 (0.83%) Electronics
11 1 (0.83%) Manufacturing
11 1 (0.83%) Organisational Skills
11 1 (0.83%) Retail Banking
11 1 (0.83%) Telecoms
Job Titles
1 53 (44.17%) Developer
2 21 (17.50%) Senior Developer
3 19 (15.83%) C# Developer
4 11 (9.17%) Full Stack Developer
5 10 (8.33%) Software Engineer
6 9 (7.50%) .NET Developer
6 9 (7.50%) Analyst
6 9 (7.50%) C# .NET Developer
7 8 (6.67%) ASP.NET Developer
7 8 (6.67%) Azure Engineer
7 8 (6.67%) Backend Developer
7 8 (6.67%) C# ASP.NET Developer
7 8 (6.67%) React Developer
7 8 (6.67%) Senior C# Developer
7 8 (6.67%) Senior SQL Developer
7 8 (6.67%) SQL Developer
8 7 (5.83%) Senior Backend Developer
9 6 (5.00%) Java Developer
9 6 (5.00%) Senior Software Engineer
10 5 (4.17%) Testing Specialist
Libraries, Frameworks & Software Standards
1 48 (40.00%) .NET
2 39 (32.50%) XML
3 30 (25.00%) HTML
4 29 (24.17%) CSS
5 28 (23.33%) REST
5 28 (23.33%) Web Services
6 23 (19.17%) ASP.NET
7 22 (18.33%) React
8 20 (16.67%) .NET Framework
9 17 (14.17%) AngularJS
9 17 (14.17%) jQuery
10 15 (12.50%) HTML5
11 14 (11.67%) CSS3
12 13 (10.83%) Kafka
13 11 (9.17%) .NET Core
13 11 (9.17%) Node.js
13 11 (9.17%) Twitter Bootstrap
14 10 (8.33%) RESTful
14 10 (8.33%) SOAP
15 9 (7.50%) ASP.NET Web API
Miscellaneous
1 14 (11.67%) Equities
2 11 (9.17%) Greenfield Project
2 11 (9.17%) Mobile App
3 7 (5.83%) Enterprise Software
3 7 (5.83%) Public Cloud
4 6 (5.00%) User Experience
5 5 (4.17%) Marketing Technology
6 4 (3.33%) Data Centre
6 4 (3.33%) Legacy Systems
6 4 (3.33%) Reference Data
7 2 (1.67%) Algorithms
7 2 (1.67%) Data Structures
7 2 (1.67%) Enterprise Cloud
7 2 (1.67%) Legacy Code
7 2 (1.67%) Self-Motivation
8 1 (0.83%) CMDB
8 1 (0.83%) Derivative
8 1 (0.83%) Linux Command Line
8 1 (0.83%) OTC Derivatives
8 1 (0.83%) Virtual Team
Operating Systems
1 10 (8.33%) Android
1 10 (8.33%) Apple iOS
2 9 (7.50%) Linux
3 7 (5.83%) Windows
4 3 (2.50%) Windows 10
4 3 (2.50%) Windows Server
5 2 (1.67%) Windows Server 2012
5 2 (1.67%) Windows Server 2016
5 2 (1.67%) Windows Server 2019
6 1 (0.83%) Unix
Processes & Methodologies
1 57 (47.50%) Agile Software Development
2 55 (45.83%) DevOps
3 42 (35.00%) OO
4 32 (26.67%) MVC
5 24 (20.00%) Test Automation
6 23 (19.17%) Scrum
6 23 (19.17%) SDLC
7 21 (17.50%) OOP
8 19 (15.83%) Full Stack Development
8 19 (15.83%) SOLID
9 17 (14.17%) Software Engineering
10 16 (13.33%) Continuous Integration
10 16 (13.33%) TDD
11 15 (12.50%) Unit Testing
12 14 (11.67%) Infrastructure as Code
12 14 (11.67%) MVVM
12 14 (11.67%) Risk Management
13 13 (10.83%) Web Development
14 12 (10.00%) BDD
14 12 (10.00%) CRM
Programming Languages
1 64 (53.33%) SQL
2 51 (42.50%) C#
3 38 (31.67%) JavaScript
4 22 (18.33%) Java
5 15 (12.50%) PowerShell
6 14 (11.67%) VBA
7 13 (10.83%) Python
8 8 (6.67%) TypeScript
9 6 (5.00%) Bash Shell
10 4 (3.33%) PL/SQL
11 2 (1.67%) C
11 2 (1.67%) Groovy
11 2 (1.67%) Java 8
11 2 (1.67%) Ruby
11 2 (1.67%) T-SQL
12 1 (0.83%) Apex Code
12 1 (0.83%) Go
12 1 (0.83%) Haskell
12 1 (0.83%) Korn
12 1 (0.83%) Scala
Qualifications
1 8 (6.67%) SC Cleared
1 8 (6.67%) Security Cleared
2 3 (2.50%) Degree
3 1 (0.83%) Computer Science Degree
3 1 (0.83%) DBS Check
Quality Assurance & Compliance
1 12 (10.00%) QA
2 3 (2.50%) GDPR
3 1 (0.83%) ISO 15022
3 1 (0.83%) ISO 20022
System Software
1 15 (12.50%) Active Directory
2 7 (5.83%) Docker
3 4 (3.33%) VMware Infrastructure
3 4 (3.33%) VMware NSX
4 1 (0.83%) BitLocker
4 1 (0.83%) Hyper-V
4 1 (0.83%) Microsoft App-V
4 1 (0.83%) XenApp
Systems Management
1 16 (13.33%) Terraform
2 12 (10.00%) Kubernetes
3 5 (4.17%) Ansible
4 4 (3.33%) FortiGate
5 3 (2.50%) Microsoft Intune
5 3 (2.50%) Opscode Chef
5 3 (2.50%) Puppet
6 1 (0.83%) Automic
6 1 (0.83%) EdgeSight
6 1 (0.83%) Nagios
6 1 (0.83%) SCCM
6 1 (0.83%) SCOM
6 1 (0.83%) SCOrch
6 1 (0.83%) SCVMM
6 1 (0.83%) WMI
Vendors
1 29 (24.17%) Microsoft
2 14 (11.67%) Fidessa
3 8 (6.67%) Google
4 7 (5.83%) Oracle
4 7 (5.83%) VMware
5 6 (5.00%) SolarWinds
6 5 (4.17%) Cisco
7 4 (3.33%) Bloomberg
7 4 (3.33%) CA
7 4 (3.33%) Concur
7 4 (3.33%) Fortinet
7 4 (3.33%) Sage
7 4 (3.33%) Sun
8 2 (1.67%) Atlassian
8 2 (1.67%) New Relic
8 2 (1.67%) Salesforce.com
9 1 (0.83%) Apple
9 1 (0.83%) CheckPoint
9 1 (0.83%) McAfee
9 1 (0.83%) Sophos