Period
to 7 March 2021

The following table provides summary statistics for permanent job vacancies advertised in 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 7 March 2021 with a comparison to the same period in the previous 2 years.

JSON
England > London
6 months to
7 Mar 2021
Same period 2020 Same period 2019
Rank 185 202 170
Rank change year-on-year +17 -32 +29
Permanent jobs citing JSON 492 900 1,254
As % of all permanent jobs advertised in London 1.74% 1.80% 2.04%
As % of the Libraries, Frameworks & Software Standards category 3.97% 4.46% 5.02%
Number of salaries quoted 441 722 1,010
Median annual salary £63,000 £62,500 £62,500
Median salary % change year-on-year +0.80% - +4.17%
10th Percentile £43,750 £42,500 £41,250
90th Percentile £95,000 £95,000 £90,000
England median annual salary £52,500 £55,000 £55,000
% change year-on-year -4.55% - +15.79%

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 London with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
London
Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 12,389 20,181 24,961
As % of all permanent IT jobs advertised in London 43.90% 40.41% 40.57%
Number of salaries quoted 10,218 16,744 20,894
Median annual salary £70,000 £70,000 £65,000
Median salary % change year-on-year - +7.69% +8.33%
10th Percentile £45,000 £42,114 £38,750
90th Percentile £105,000 £105,000 £95,000
England median annual salary £57,500 £55,000 £52,500
% change year-on-year +4.55% +4.76% +5.00%

JSON
Job Vacancy Trend in London

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

Job vacancy trend for JSON in London

JSON
Salary Trend in London

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

Salary trend for JSON in London

JSON
Salary Histogram in London

Salary distribution for jobs citing JSON in London over the 6 months to 7 March 2021.

Salary histogram for JSON in London

JSON
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing JSON within the London region over the 6 months to 7 March 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
Central London +26 117 £72,500 +3.57% 33
South London +48 27 £60,000 +37.14% 1
West London +13 6 - - 28
East London +10 3 £57,500 +15.07% 10
JSON
England

For the 6 months to 7 March 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 London region with a requirement for JSON.

1 213 (43.29%) XML
2 198 (40.24%) Agile Software Development
3 173 (35.16%) RESTful
4 171 (34.76%) SQL
5 169 (34.35%) Java
6 165 (33.54%) JavaScript
6 165 (33.54%) REST
7 157 (31.91%) HTML
8 150 (30.49%) DevOps
9 148 (30.08%) Finance
10 146 (29.67%) .NET
11 140 (28.46%) Azure
12 136 (27.64%) C#
13 126 (25.61%) Git (software)
14 123 (25.00%) CSS
15 122 (24.80%) OO
16 107 (21.75%) Test Automation
17 102 (20.73%) Web Services
18 101 (20.53%) Python
19 100 (20.33%) Problem-Solving
20 95 (19.31%) SQL Server
21 94 (19.11%) AWS
21 94 (19.11%) TDD
21 94 (19.11%) AngularJS
22 89 (18.09%) SOAP
23 84 (17.07%) React
24 79 (16.06%) Jenkins
25 77 (15.65%) Microservices
26 74 (15.04%) Web Development
27 70 (14.23%) Unit Testing

JSON
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 34 (6.91%) Confluence
2 33 (6.71%) Elasticsearch
3 29 (5.89%) Apache
4 22 (4.47%) JBoss
5 21 (4.27%) IIS
5 21 (4.27%) Red Hat Fuse
6 20 (4.07%) Apache ServiceMix
6 20 (4.07%) Apache Spark
7 18 (3.66%) CMS
8 15 (3.05%) EPiServer
9 11 (2.24%) Tomcat
10 9 (1.83%) Oracle SOA Suite
11 8 (1.63%) Apache Solr
12 7 (1.42%) SharePoint
13 5 (1.02%) Drupal
13 5 (1.02%) WebSphere
14 4 (0.81%) Apache Airflow
14 4 (0.81%) WordPress
15 3 (0.61%) Anypoint
15 3 (0.61%) Mule ESB
Applications
1 19 (3.86%) Microsoft Excel
2 13 (2.64%) Microsoft Office
3 6 (1.22%) Spreadsheet
4 4 (0.81%) Photoshop
5 2 (0.41%) Adobe Creative Suite
5 2 (0.41%) Adobe Illustrator
5 2 (0.41%) Adobe XD
5 2 (0.41%) Fireworks
5 2 (0.41%) Sketch
Business Applications
1 3 (0.61%) NetSuite
1 3 (0.61%) Sparx Enterprise Architect
2 2 (0.41%) Dynamics CRM
2 2 (0.41%) Markit EDM
3 1 (0.20%) Distributed Ledger
3 1 (0.20%) Dynamics AX
3 1 (0.20%) Oracle Cash Management
3 1 (0.20%) R3 Corda
Cloud Services
1 140 (28.46%) Azure
2 94 (19.11%) AWS
3 36 (7.32%) SaaS
4 22 (4.47%) Boomi
4 22 (4.47%) GCP
4 22 (4.47%) GitHub
5 19 (3.86%) npm
6 16 (3.25%) Power Platform
7 13 (2.64%) IaaS
7 13 (2.64%) PaaS
8 12 (2.44%) Amazon SQS
9 11 (2.24%) Microsoft 365
10 9 (1.83%) Power Automate
10 9 (1.83%) Serverless
11 7 (1.42%) Amazon S3
11 7 (1.42%) Logic Apps
12 6 (1.22%) Amazon EC2
12 6 (1.22%) Azure Data Factory
12 6 (1.22%) Azure Functions
12 6 (1.22%) Salesforce Service Cloud
Communications & Networking
1 48 (9.76%) HTTP
2 29 (5.89%) Firewall
3 22 (4.47%) TCP/IP
4 17 (3.46%) WAN
5 15 (3.05%) SSL
6 14 (2.85%) LAN
7 13 (2.64%) Internet
8 8 (1.63%) BGP
8 8 (1.63%) Network Security
8 8 (1.63%) OSPF
9 7 (1.42%) Cisco ASA
10 6 (1.22%) Cisco Firepower
10 6 (1.22%) Cisco ISE
10 6 (1.22%) Ethernet
10 6 (1.22%) F5 BIG-IP GTM
10 6 (1.22%) F5 BIG-IP LTM
11 5 (1.02%) Wireless
12 4 (0.81%) DNS
12 4 (0.81%) Wi-Fi
12 4 (0.81%) Wireshark
Database & Business Intelligence
1 95 (19.31%) SQL Server
2 51 (10.37%) Relational Database
3 47 (9.55%) NoSQL
4 43 (8.74%) MongoDB
5 37 (7.52%) MySQL
6 25 (5.08%) Hadoop
7 24 (4.88%) Azure SQL Database
8 23 (4.67%) Big Data
9 18 (3.66%) PostgreSQL
10 15 (3.05%) Apache Cassandra
11 14 (2.85%) Data Warehouse
11 14 (2.85%) RDBMS
11 14 (2.85%) SQL Server Integration Services
12 13 (2.64%) Tableau
13 12 (2.44%) Redis
14 11 (2.24%) Data Mining
15 10 (2.03%) Hazelcast
15 10 (2.03%) Power BI
16 9 (1.83%) Cosmos DB
17 7 (1.42%) Data Lake
Development Applications
1 126 (25.61%) Git (software)
2 79 (16.06%) Jenkins
3 48 (9.76%) JIRA
4 39 (7.93%) Selenium
5 30 (6.10%) JUnit
6 29 (5.89%) webpack
7 28 (5.69%) Visual Studio
8 27 (5.49%) gulp
9 26 (5.28%) Maven
10 21 (4.27%) Cucumber
11 20 (4.07%) Gradle
12 17 (3.46%) Postman
12 17 (3.46%) Team Foundation Server
13 16 (3.25%) Mocha
14 14 (2.85%) TeamCity
15 13 (2.64%) Eclipse
16 12 (2.44%) Atlassian Bamboo
16 12 (2.44%) Grunt
16 12 (2.44%) Mockito
16 12 (2.44%) WebDriver
General
1 148 (30.08%) Finance
2 48 (9.76%) Banking
3 16 (3.25%) Marketing
4 8 (1.63%) Advertising
4 8 (1.63%) Games
4 8 (1.63%) Law
5 7 (1.42%) Financial Institution
5 7 (1.42%) Public Sector
5 7 (1.42%) Publishing
6 6 (1.22%) Front Office
6 6 (1.22%) Investment Banking
7 5 (1.02%) Legal
8 4 (0.81%) Back Office
9 3 (0.61%) Housing Association
9 3 (0.61%) Retail
9 3 (0.61%) Telecoms
10 2 (0.41%) Electronics
10 2 (0.41%) French Language
10 2 (0.41%) Local Government
10 2 (0.41%) Manufacturing
Job Titles
1 271 (55.08%) Developer
2 52 (10.57%) Senior Developer
3 46 (9.35%) .NET Developer
3 46 (9.35%) C# Developer
4 44 (8.94%) Architect
5 40 (8.13%) Consultant
6 34 (6.91%) Full Stack Developer
7 33 (6.71%) C# .NET Developer
8 27 (5.49%) Python Developer
9 26 (5.28%) Java Developer
9 26 (5.28%) Software Developer
9 26 (5.28%) Web Developer
10 22 (4.47%) Mobile Developer
11 21 (4.27%) Analyst
12 20 (4.07%) Angular Developer
12 20 (4.07%) Salesforce Developer
12 20 (4.07%) Software Engineer
13 16 (3.25%) Data Engineer
13 16 (3.25%) Integration Consultant
13 16 (3.25%) iOS Developer
Libraries, Frameworks & Software Standards
1 213 (43.29%) XML
2 173 (35.16%) RESTful
3 165 (33.54%) REST
4 157 (31.91%) HTML
5 146 (29.67%) .NET
6 123 (25.00%) CSS
7 102 (20.73%) Web Services
8 94 (19.11%) AngularJS
9 89 (18.09%) SOAP
10 84 (17.07%) React
11 61 (12.40%) jQuery
11 61 (12.40%) Kafka
11 61 (12.40%) Node.js
11 61 (12.40%) Spring
12 58 (11.79%) HTML5
13 53 (10.77%) ASP.NET
14 45 (9.15%) ASP.NET Web API
15 44 (8.94%) Sass
16 42 (8.54%) Redux
17 41 (8.33%) .NET Core
Miscellaneous
1 41 (8.33%) Mobile App
2 38 (7.72%) Analytical Skills
3 34 (6.91%) Public Cloud
4 31 (6.30%) User Experience
5 25 (5.08%) Virtual Team
6 21 (4.27%) Enterprise Software
7 18 (3.66%) Data Centre
8 13 (2.64%) Greenfield Project
9 12 (2.44%) NHS
10 11 (2.24%) Data Structures
11 10 (2.03%) Management Information System
11 10 (2.03%) N-Tier
12 9 (1.83%) Derivative
12 9 (1.83%) Linux Command Line
13 7 (1.42%) Fixed Income
13 7 (1.42%) Hedge funds
13 7 (1.42%) SWIFT
13 7 (1.42%) W3C
14 6 (1.22%) Equities
14 6 (1.22%) Private Cloud
Operating Systems
1 48 (9.76%) Linux
2 46 (9.35%) Apple iOS
3 44 (8.94%) Android
4 29 (5.89%) Windows
5 18 (3.66%) Ubuntu
6 11 (2.24%) Windows Server
7 9 (1.83%) Unix
8 6 (1.22%) Debian
9 5 (1.02%) Windows Server 2016
10 1 (0.20%) Fedora
10 1 (0.20%) Mac OS
10 1 (0.20%) Mac OS X
Processes & Methodologies
1 198 (40.24%) Agile Software Development
2 150 (30.49%) DevOps
3 122 (24.80%) OO
4 107 (21.75%) Test Automation
5 100 (20.33%) Problem-Solving
6 94 (19.11%) TDD
7 77 (15.65%) Microservices
8 74 (15.04%) Web Development
9 70 (14.23%) Unit Testing
10 65 (13.21%) Scrum
11 63 (12.80%) MVC
12 61 (12.40%) Software Engineering
13 54 (10.98%) Continuous Integration
14 53 (10.77%) Fintech
15 49 (9.96%) ETL
15 49 (9.96%) OOP
16 47 (9.55%) BDD
17 46 (9.35%) Analytics
18 44 (8.94%) Mentoring
19 38 (7.72%) API Development
Programming Languages
1 171 (34.76%) SQL
2 169 (34.35%) Java
3 165 (33.54%) JavaScript
4 136 (27.64%) C#
5 101 (20.53%) Python
6 33 (6.71%) PowerShell
7 30 (6.10%) Java 8
8 26 (5.28%) PHP
9 22 (4.47%) T-SQL
10 20 (4.07%) PL/SQL
11 16 (3.25%) TypeScript
12 15 (3.05%) Perl
13 14 (2.85%) Ruby
14 13 (2.64%) Groovy
15 12 (2.44%) C
16 10 (2.03%) Apex Code
16 10 (2.03%) Kotlin
16 10 (2.03%) Scala
16 10 (2.03%) SOQL
16 10 (2.03%) VB.NET
Qualifications
1 55 (11.18%) Degree
2 17 (3.46%) Computer Science Degree
3 11 (2.24%) Security Cleared
4 10 (2.03%) SC Cleared
5 9 (1.83%) ITIL Foundation Certificate
6 6 (1.22%) Cisco Certification
7 4 (0.81%) CCNP
8 3 (0.61%) CCIE
8 3 (0.61%) DBS Check
8 3 (0.61%) Master's Degree
8 3 (0.61%) TOGAF Certification
9 2 (0.41%) AWS Certification
9 2 (0.41%) ITIL Certification
9 2 (0.41%) PMI Certification
9 2 (0.41%) PMP
10 1 (0.20%) CCMSE
10 1 (0.20%) CCNA
10 1 (0.20%) DV Cleared
10 1 (0.20%) Microsoft Certification
10 1 (0.20%) PhD
Quality Assurance & Compliance
1 51 (10.37%) QA
2 4 (0.81%) GDPR
3 3 (0.61%) HL7
4 2 (0.41%) Data Quality
4 2 (0.41%) WAI
4 2 (0.41%) WCAG
5 1 (0.20%) ISO 20022
5 1 (0.20%) PSD2
5 1 (0.20%) Sarbanes-Oxley
5 1 (0.20%) TARGET2
System Software
1 52 (10.57%) Docker
2 9 (1.83%) Active Directory
3 7 (1.42%) VMware Infrastructure
4 6 (1.22%) VMware NSX
5 4 (0.81%) Virtual Machines
6 2 (0.41%) HDFS
7 1 (0.20%) Shibboleth
7 1 (0.20%) vSphere
Systems Management
1 35 (7.11%) Kubernetes
2 24 (4.88%) Ansible
3 17 (3.46%) Terraform
4 8 (1.63%) FortiGate
5 3 (0.61%) Grafana
5 3 (0.61%) Graphite
5 3 (0.61%) HAProxy
5 3 (0.61%) Puppet
6 2 (0.41%) Salt
7 1 (0.20%) Kibana
7 1 (0.20%) logstash
7 1 (0.20%) Nagios
7 1 (0.20%) Opscode Chef
7 1 (0.20%) SCCM
7 1 (0.20%) Single Sign-On
Vendors
1 69 (14.02%) Microsoft
2 41 (8.33%) Oracle
3 34 (6.91%) IBM
4 33 (6.71%) Google
5 31 (6.30%) MuleSoft
6 28 (5.69%) Salesforce.com
7 23 (4.67%) Dell
8 22 (4.47%) Xamarin
9 21 (4.27%) UiPath
9 21 (4.27%) WSO2
10 20 (4.07%) TIBCO
11 16 (3.25%) Cisco
12 14 (2.85%) Red Hat
12 14 (2.85%) SolarWinds
13 11 (2.24%) Splunk
14 10 (2.03%) Fortinet
15 9 (1.83%) Atlassian
16 8 (1.63%) Palo Alto
17 7 (1.42%) Adobe
17 7 (1.42%) CheckPoint