Period
to 15 January 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 15 January 2021 with a comparison to the same period in the previous 2 years.

JSON
Central London > City of London
6 months to
15 Jan 2021
Same period 2020 Same period 2019
Rank 130 172 150
Rank change year-on-year +42 -22 +16
Permanent jobs citing JSON 88 151 202
As % of all permanent jobs advertised in the City of London 2.05% 1.65% 1.98%
As % of the Libraries, Frameworks & Software Standards category 4.64% 4.23% 4.50%
Number of salaries quoted 69 136 189
Median annual salary £75,000 £65,000 £72,500
Median salary % change year-on-year +15.38% -10.34% +20.83%
10th Percentile £55,250 £44,000 £48,750
90th Percentile £95,000 £89,375 £95,000
Central London median annual salary £75,000 £70,000 £72,500
% change year-on-year +7.14% -3.45% +26.09%

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 1,898 3,568 4,486
As % of all permanent IT jobs advertised in the City of London 44.22% 38.96% 43.89%
Number of salaries quoted 1,673 3,208 4,120
Median annual salary £70,000 £70,000 £67,500
Median salary % change year-on-year - +3.70% +8.00%
10th Percentile £47,500 £44,400 £42,500
90th Percentile £105,000 £97,500 £92,500
Central London median annual salary £70,000 £70,000 £65,000
% change year-on-year - +7.69% +8.33%

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 15 January 2021.

Salary histogram for JSON in the City of London

For the 6 months to 15 January 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 55 (62.50%) REST
2 36 (40.91%) Finance
2 36 (40.91%) Agile Software Development
3 31 (35.23%) C#
4 30 (34.09%) TDD
5 29 (32.95%) SQL
5 29 (32.95%) Azure
5 29 (32.95%) Fintech
6 27 (30.68%) SQL Server
7 25 (28.41%) .NET
7 25 (28.41%) OO
7 25 (28.41%) Banking
7 25 (28.41%) DevOps
8 24 (27.27%) Asset Management
8 24 (27.27%) JavaScript
9 23 (26.14%) webpack
9 23 (26.14%) Redux
10 22 (25.00%) Sass
10 22 (25.00%) XML
11 21 (23.86%) OOP
12 18 (20.45%) SOAP
13 17 (19.32%) SOLID
14 16 (18.18%) AngularJS
14 16 (18.18%) HTML
14 16 (18.18%) Python
15 14 (15.91%) CSS
15 14 (15.91%) Git (software)
16 13 (14.77%) Test Automation
16 13 (14.77%) AWS
16 13 (14.77%) Web Services

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 (6.82%) Elasticsearch
2 2 (2.27%) CMS
2 2 (2.27%) EPiServer
3 1 (1.14%) Apache Spark
3 1 (1.14%) Appian
3 1 (1.14%) SharePoint
3 1 (1.14%) WordPress
Applications
1 6 (6.82%) Microsoft Excel
2 1 (1.14%) Microsoft Office
Business Applications
1 1 (1.14%) Dynamics CRM
Cloud Services
1 29 (32.95%) Azure
2 13 (14.77%) AWS
3 8 (9.09%) Power Platform
4 7 (7.95%) npm
5 5 (5.68%) GCP
5 5 (5.68%) NuGet
5 5 (5.68%) Veeva
6 3 (3.41%) Azure Data Factory
6 3 (3.41%) Dynamics 365
6 3 (3.41%) Logic Apps
7 2 (2.27%) Amazon EC2
7 2 (2.27%) Amazon S3
7 2 (2.27%) GitHub
8 1 (1.14%) Amazon ElastiCache
8 1 (1.14%) Amazon EMR
8 1 (1.14%) Amazon Kinesis
8 1 (1.14%) IaaS
8 1 (1.14%) Office 365
8 1 (1.14%) PaaS
8 1 (1.14%) SaaS
Communications & Networking
1 6 (6.82%) Firewall
1 6 (6.82%) LAN
1 6 (6.82%) WAN
2 5 (5.68%) F5 BIG-IP GTM
2 5 (5.68%) F5 BIG-IP LTM
2 5 (5.68%) HTTP
3 4 (4.55%) BGP
3 4 (4.55%) OSPF
3 4 (4.55%) Wireless
4 3 (3.41%) Cisco ASA
4 3 (3.41%) Cisco Nexus
4 3 (3.41%) Cisco Wireless
4 3 (3.41%) Multicast
4 3 (3.41%) Network Security
4 3 (3.41%) TCP/IP
4 3 (3.41%) VXLAN
4 3 (3.41%) Wi-Fi
4 3 (3.41%) Wireshark
5 2 (2.27%) Cisco Firepower
5 2 (2.27%) NX-OS
Database & Business Intelligence
1 27 (30.68%) SQL Server
2 10 (11.36%) SQL Server Integration Services
3 8 (9.09%) MySQL
4 7 (7.95%) Power BI
4 7 (7.95%) Redis
5 6 (6.82%) Data Warehouse
5 6 (6.82%) SQL Server Reporting Services
6 5 (5.68%) Azure SQL Data Warehouse
6 5 (5.68%) OLAP
6 5 (5.68%) OLAP Cube
6 5 (5.68%) OLTP
6 5 (5.68%) PostgreSQL
6 5 (5.68%) SQL Server Analysis Services
7 3 (3.41%) InterSystems Cache
7 3 (3.41%) NoSQL
7 3 (3.41%) Relational Database
8 2 (2.27%) Amazon DynamoDB
8 2 (2.27%) Azure SQL Database
8 2 (2.27%) Big Data
8 2 (2.27%) Cosmos DB
Development Applications
1 23 (26.14%) webpack
2 14 (15.91%) Git (software)
3 7 (7.95%) Team Foundation Server
4 4 (4.55%) Visual Studio
5 3 (3.41%) Sonatype Nexus
6 2 (2.27%) Maven
7 1 (1.14%) Babel
7 1 (1.14%) CircleCI
7 1 (1.14%) Cypress.io
7 1 (1.14%) JIRA
7 1 (1.14%) NUnit
7 1 (1.14%) Selenium
7 1 (1.14%) SpecFlow
7 1 (1.14%) Storybook
7 1 (1.14%) TeamCity
7 1 (1.14%) Travis CI
7 1 (1.14%) Visual Studio Code
7 1 (1.14%) Visual Studio Team System
7 1 (1.14%) WebDriver
7 1 (1.14%) xUnit.net
General
1 36 (40.91%) Finance
2 25 (28.41%) Banking
3 2 (2.27%) Marketing
4 1 (1.14%) Advertising
4 1 (1.14%) Front Office
4 1 (1.14%) Games
4 1 (1.14%) Investment Banking
4 1 (1.14%) Legal
4 1 (1.14%) Private Banking
4 1 (1.14%) Publishing
Job Titles
1 43 (48.86%) Developer
2 12 (13.64%) C# Developer
3 11 (12.50%) Salesforce Developer
4 10 (11.36%) Full Stack Developer
5 9 (10.23%) .NET Developer
6 7 (7.95%) Senior Developer
7 6 (6.82%) Azure Developer
7 6 (6.82%) Python Developer
7 6 (6.82%) Software Engineer
7 6 (6.82%) SQL Developer
7 6 (6.82%) SQL Server Developer
8 5 (5.68%) Business Intelligence Developer
8 5 (5.68%) Excel Developer
8 5 (5.68%) Microsoft BI Developer
8 5 (5.68%) OLAP Developer
8 5 (5.68%) SQL BI Developer
8 5 (5.68%) SQL Server BI Developer
8 5 (5.68%) SQL Server Data Warehouse Developer
8 5 (5.68%) SSAS Developer
8 5 (5.68%) SSIS Developer
Libraries, Frameworks & Software Standards
1 55 (62.50%) REST
2 25 (28.41%) .NET
3 23 (26.14%) Redux
4 22 (25.00%) Sass
4 22 (25.00%) XML
5 18 (20.45%) SOAP
6 16 (18.18%) AngularJS
6 16 (18.18%) HTML
7 14 (15.91%) CSS
8 13 (14.77%) Web Services
9 11 (12.50%) React
10 10 (11.36%) ASP.NET
11 9 (10.23%) .NET Core
11 9 (10.23%) RESTful
12 8 (9.09%) .NET Framework
12 8 (9.09%) ASP.NET Web API
13 7 (7.95%) ASP.NET MVC
13 7 (7.95%) Node.js
14 6 (6.82%) jQuery
14 6 (6.82%) Swagger
Miscellaneous
1 6 (6.82%) Data Centre
2 2 (2.27%) Analytical Skills
2 2 (2.27%) Public Cloud
2 2 (2.27%) User Experience
3 1 (1.14%) Derivative
3 1 (1.14%) Foreign Exchange (FX)
3 1 (1.14%) Linux Command Line
3 1 (1.14%) Mobile App
3 1 (1.14%) OTC Derivatives
3 1 (1.14%) Reinsurance
Operating Systems
1 5 (5.68%) Linux
2 2 (2.27%) Windows
3 1 (1.14%) Android
3 1 (1.14%) Apple iOS
3 1 (1.14%) Unix
3 1 (1.14%) Windows Server
Processes & Methodologies
1 36 (40.91%) Agile Software Development
2 30 (34.09%) TDD
3 29 (32.95%) Fintech
4 25 (28.41%) DevOps
4 25 (28.41%) OO
5 24 (27.27%) Asset Management
6 21 (23.86%) OOP
7 17 (19.32%) SOLID
8 13 (14.77%) Microservices
8 13 (14.77%) Test Automation
9 12 (13.64%) API Integration
9 12 (13.64%) Scrum
10 11 (12.50%) Data Modelling
10 11 (12.50%) OOD
11 10 (11.36%) BDD
12 9 (10.23%) Mentoring
12 9 (10.23%) MVC
12 9 (10.23%) SDLC
12 9 (10.23%) Web Development
13 8 (9.09%) Analytics
Programming Languages
1 31 (35.23%) C#
2 29 (32.95%) SQL
3 24 (27.27%) JavaScript
4 16 (18.18%) Python
5 11 (12.50%) Java
6 6 (6.82%) PHP
6 6 (6.82%) T-SQL
7 5 (5.68%) SOQL
8 2 (2.27%) Kotlin
8 2 (2.27%) PHP 7
8 2 (2.27%) PowerShell
8 2 (2.27%) TypeScript
9 1 (1.14%) Apple Swift
9 1 (1.14%) ES6
9 1 (1.14%) Perl
9 1 (1.14%) R
9 1 (1.14%) VB
Qualifications
1 4 (4.55%) Degree
2 3 (3.41%) Cisco Certification
3 2 (2.27%) SC Cleared
3 2 (2.27%) Security Cleared
4 1 (1.14%) CCMSE
4 1 (1.14%) CCNA
4 1 (1.14%) CCNP
4 1 (1.14%) Computer Science Degree
4 1 (1.14%) ITIL Certification
Quality Assurance & Compliance
1 6 (6.82%) QA
System Software
1 9 (10.23%) Docker
2 2 (2.27%) VMware Infrastructure
2 2 (2.27%) VMware NSX
Systems Management
1 5 (5.68%) Ansible
2 3 (3.41%) FortiGate
3 2 (2.27%) Terraform
4 1 (1.14%) Kubernetes
Vendors
1 13 (14.77%) Microsoft
2 11 (12.50%) Salesforce.com
3 6 (6.82%) CheckPoint
3 6 (6.82%) Cisco
4 5 (5.68%) F5
4 5 (5.68%) Fortinet
4 5 (5.68%) SolarWinds
5 4 (4.55%) Google
5 4 (4.55%) Palo Alto
6 3 (3.41%) Arista
6 3 (3.41%) Riverbed
6 3 (3.41%) Splunk
7 2 (2.27%) Blue Coat
7 2 (2.27%) CA
7 2 (2.27%) Oracle
7 2 (2.27%) Remedy
7 2 (2.27%) VMware
8 1 (1.14%) Meraki
8 1 (1.14%) MuleSoft
8 1 (1.14%) OutSystems