Period
to 16 February 2020

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for JSON skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JSON over the 6 months to 16 February 2020 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

JSON
Central London > City of London
6 months to
16 Feb 2020
Same period 2019 Same period 2018
Rank 120 107 104
Rank change year-on-year -13 -3 -21
Contract jobs citing JSON 70 170 170
As % of all contract IT jobs advertised in the City of London 1.50% 2.51% 2.39%
As % of the Libraries, Frameworks & Software Standards category 4.43% 6.46% 6.27%
Number of daily rates quoted 53 138 140
City of London median daily rate £475 £525 £450
Median daily rate % change year-on-year -9.52% +16.67% -10.00%
10th Percentile £315 £413 £392
90th Percentile £650 £688 £619
Central London median daily rate £450 £525 £450
% change year-on-year -14.29% +16.67% -10.00%
Number of hourly rates quoted 1 0 0
City of London median hourly rate £63.33 - -
Central London median hourly rate £63.33 - -

JSON is in the Software Libraries and Frameworks category. The following table is for comparison with the above and provides summary statistics for all contract 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
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 1,581 2,633 2,710
As % of all contract IT jobs advertised in the City of London 33.94% 38.86% 38.08%
Number of daily rates quoted 1,277 2,186 2,317
City of London median daily rate £538 £525 £513
Median daily rate % change year-on-year +2.38% +2.44% +5.13%
10th Percentile £388 £410 £363
90th Percentile £688 £663 £675
Central London median daily rate £525 £525 £500
% change year-on-year - +5.00% +5.26%
Number of hourly rates quoted 5 3 9
City of London median hourly rate £35.00 £19.00 £21.50
Median hourly rate % change year-on-year +84.21% -11.63% -60.37%
10th Percentile £24.50 £14.90 £21.15
90th Percentile £63.50 £84.50 £52.10
Central London median hourly rate £35.00 £27.00 £21.50
% change year-on-year +29.63% +25.58% -60.37%

JSON
Job Vacancy Trend in the City of London

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

Job vacancy trend for JSON in the City of London

JSON
Contractor Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing JSON in the City of London.

Contractor daily rate trend for JSON in the City of London

JSON
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing JSON in the City of London over the 6 months to 16 February 2020.

Contractor daily rate histogram for JSON in the City of London

JSON
Contractor Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing JSON in the City of London.

Contractor hourly rate trend for JSON in the City of London

For the 6 months to 16 February 2020, IT contractor 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 contract job ads across the City of London region with a requirement for JSON.

1 42 (60.00%) XML
2 32 (45.71%) Agile Software Development
3 31 (44.29%) JavaScript
4 29 (41.43%) Java
5 26 (37.14%) Web Services
5 26 (37.14%) REST
6 25 (35.71%) SQL
7 21 (30.00%) CSS
8 20 (28.57%) C#
9 19 (27.14%) HTML
9 19 (27.14%) DevOps
10 17 (24.29%) Git (software)
11 15 (21.43%) Jenkins
12 14 (20.00%) .NET
13 13 (18.57%) Azure
13 13 (18.57%) API Development
14 12 (17.14%) Spring
14 12 (17.14%) SOAP
14 12 (17.14%) Linux
15 11 (15.71%) SQL Server
15 11 (15.71%) Maven
15 11 (15.71%) Web Development
16 10 (14.29%) Node.js
16 10 (14.29%) SDLC
17 9 (12.86%) Kotlin
17 9 (12.86%) Analytical Skills
17 9 (12.86%) GitHub
17 9 (12.86%) Open Source
17 9 (12.86%) Waterfall
17 9 (12.86%) Computer Science

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 9 (12.86%) WebLogic
2 6 (8.57%) WebSphere
3 5 (7.14%) Confluence
4 3 (4.29%) Apache
4 3 (4.29%) CMS
4 3 (4.29%) Oracle SOA Suite
5 2 (2.86%) Apache Spark
5 2 (2.86%) Drupal
5 2 (2.86%) IIS
5 2 (2.86%) MQSeries
5 2 (2.86%) SharePoint
5 2 (2.86%) Tomcat
6 1 (1.43%) JBoss
6 1 (1.43%) Red Hat Fuse
Business Applications
1 1 (1.43%) Dynamics CRM
1 1 (1.43%) Sparx Enterprise Architect
Cloud Services
1 13 (18.57%) Azure
2 9 (12.86%) GitHub
3 5 (7.14%) AWS
4 3 (4.29%) npm
4 3 (4.29%) Serverless
5 2 (2.86%) AWS CloudFormation
5 2 (2.86%) AWS Lambda
5 2 (2.86%) Azure Functions
5 2 (2.86%) Office 365
5 2 (2.86%) OpenShift
5 2 (2.86%) Power Platform
5 2 (2.86%) SaaS
6 1 (1.43%) Amazon Cognito
6 1 (1.43%) Boomi
6 1 (1.43%) GCP
6 1 (1.43%) Google App Engine
Communications & Networking
1 7 (10.00%) HTTP
2 2 (2.86%) DNS
2 2 (2.86%) OpenVPN
3 1 (1.43%) Broadband
3 1 (1.43%) SSL
Database & Business Intelligence
1 11 (15.71%) SQL Server
2 7 (10.00%) NoSQL
3 5 (7.14%) Big Data
4 3 (4.29%) MongoDB
5 2 (2.86%) PostgreSQL
5 2 (2.86%) Power BI
5 2 (2.86%) RDBMS
5 2 (2.86%) Relational Database
5 2 (2.86%) SQL Server 2008
5 2 (2.86%) Sqoop
6 1 (1.43%) Data Warehouse
6 1 (1.43%) HBase
6 1 (1.43%) InterSystems Cache
6 1 (1.43%) MySQL
6 1 (1.43%) OLAP
6 1 (1.43%) Oracle Database
6 1 (1.43%) Oracle Database 11g
6 1 (1.43%) Parquet
6 1 (1.43%) SQL Server Integration Services
6 1 (1.43%) SQL Server Reporting Services
Development Applications
1 17 (24.29%) Git (software)
2 15 (21.43%) Jenkins
3 11 (15.71%) Maven
4 7 (10.00%) JIRA
4 7 (10.00%) JMeter
4 7 (10.00%) JUnit
4 7 (10.00%) Mockito
5 6 (8.57%) Ant
5 6 (8.57%) git-flow
5 6 (8.57%) Gradle
6 5 (7.14%) Postman
6 5 (7.14%) Visual Studio
7 4 (5.71%) SpecFlow
8 3 (4.29%) Cucumber
8 3 (4.29%) gulp
8 3 (4.29%) Selenium
9 2 (2.86%) Babel
9 2 (2.86%) Bitbucket
9 2 (2.86%) Visual Studio Team System
9 2 (2.86%) webpack
General
1 9 (12.86%) Finance
2 3 (4.29%) Advertising
2 3 (4.29%) Automotive
2 3 (4.29%) Marketing
3 2 (2.86%) Banking
4 1 (1.43%) Law
4 1 (1.43%) Pharmaceutical
Job Titles
1 41 (58.57%) Developer
2 8 (11.43%) Architect
3 7 (10.00%) Java Developer
4 6 (8.57%) Analyst
5 4 (5.71%) Python Developer
5 4 (5.71%) Senior Developer
5 4 (5.71%) Solutions Architect
5 4 (5.71%) UI Developer
6 3 (4.29%) .NET Developer
6 3 (4.29%) Author
6 3 (4.29%) Business Analyst
6 3 (4.29%) C# Developer
6 3 (4.29%) Front End Developer (Client-Side Developer)
6 3 (4.29%) Node.js Developer
6 3 (4.29%) SQL Developer
6 3 (4.29%) Technical Analyst
6 3 (4.29%) Technical Architect
6 3 (4.29%) Technical Author
6 3 (4.29%) Technical Business Analyst
6 3 (4.29%) Technical Writer
Libraries, Frameworks & Software Standards
1 42 (60.00%) XML
2 26 (37.14%) REST
2 26 (37.14%) Web Services
3 21 (30.00%) CSS
4 19 (27.14%) HTML
5 14 (20.00%) .NET
6 12 (17.14%) SOAP
6 12 (17.14%) Spring
7 10 (14.29%) Node.js
8 8 (11.43%) HTML5
8 8 (11.43%) RESTful
9 7 (10.00%) React
9 7 (10.00%) Sass
10 6 (8.57%) ASP.NET Web API
10 6 (8.57%) J2EE
10 6 (8.57%) Java EE
10 6 (8.57%) RxJava
10 6 (8.57%) XSLT
11 5 (7.14%) AngularJS
12 4 (5.71%) Swagger
Miscellaneous
1 9 (12.86%) Analytical Skills
2 7 (10.00%) Enterprise Software
3 6 (8.57%) Mobile App
3 6 (8.57%) Mobile Payment
4 5 (7.14%) Data Structures
4 5 (7.14%) User Experience
5 3 (4.29%) Greenfield Project
5 3 (4.29%) Life Science
6 2 (2.86%) Cloud Native
6 2 (2.86%) Management Information System
6 2 (2.86%) Public Cloud
6 2 (2.86%) Semantic Web
6 2 (2.86%) Web 2.0
7 1 (1.43%) Animation
7 1 (1.43%) Reference Data
7 1 (1.43%) Reinsurance
7 1 (1.43%) Self-Motivation
Operating Systems
1 12 (17.14%) Linux
2 4 (5.71%) Windows
3 2 (2.86%) Apple iOS
3 2 (2.86%) Windows Server
4 1 (1.43%) Android
4 1 (1.43%) Red Hat Enterprise Linux
4 1 (1.43%) Unix
Processes & Methodologies
1 32 (45.71%) Agile Software Development
2 19 (27.14%) DevOps
3 13 (18.57%) API Development
4 11 (15.71%) Web Development
5 10 (14.29%) SDLC
6 9 (12.86%) Computer Science
6 9 (12.86%) Multithreading
6 9 (12.86%) MVC
6 9 (12.86%) Open Source
6 9 (12.86%) Waterfall
7 8 (11.43%) BDD
7 8 (11.43%) Front End Development
7 8 (11.43%) Microservices
8 7 (10.00%) Continuous Integration
9 6 (8.57%) Multithreaded Programming
9 6 (8.57%) SOA
9 6 (8.57%) TDD
9 6 (8.57%) UML
10 5 (7.14%) Fintech
10 5 (7.14%) Thought Leadership
Programming Languages
1 31 (44.29%) JavaScript
2 29 (41.43%) Java
3 25 (35.71%) SQL
4 20 (28.57%) C#
5 9 (12.86%) Kotlin
6 8 (11.43%) Python
7 5 (7.14%) Bash Shell
7 5 (7.14%) PL/SQL
7 5 (7.14%) Shell Script
7 5 (7.14%) T-SQL
8 4 (5.71%) Groovy
8 4 (5.71%) PowerShell
8 4 (5.71%) Scala
9 3 (4.29%) Java 8
9 3 (4.29%) PHP
9 3 (4.29%) Ruby
10 2 (2.86%) Clojure
10 2 (2.86%) Go
10 2 (2.86%) Perl
11 1 (1.43%) R
Qualifications
1 7 (10.00%) Degree
1 7 (10.00%) SC Cleared
1 7 (10.00%) Security Cleared
2 5 (7.14%) Computer Science Degree
3 2 (2.86%) CTC Cleared
3 2 (2.86%) DV Cleared
3 2 (2.86%) ISEB
4 1 (1.43%) CCIE
4 1 (1.43%) CCNA
4 1 (1.43%) Cisco Certification
Quality Assurance & Compliance
1 4 (5.71%) QA
2 1 (1.43%) GxP
System Software
1 8 (11.43%) Docker
Systems Management
1 3 (4.29%) Kubernetes
1 3 (4.29%) Terraform
2 2 (2.86%) Hadoop YARN
2 2 (2.86%) Oozie
3 1 (1.43%) Ansible
3 1 (1.43%) Puppet
Vendors
1 8 (11.43%) Oracle
2 5 (7.14%) Microsoft
3 3 (4.29%) WSO2
4 2 (2.86%) Atlassian
4 2 (2.86%) Bloomberg
4 2 (2.86%) Google
4 2 (2.86%) MuleSoft
4 2 (2.86%) Red Hat
4 2 (2.86%) Reuters
4 2 (2.86%) TOWER Software
5 1 (1.43%) Axway
5 1 (1.43%) Dell
5 1 (1.43%) HubSpot
5 1 (1.43%) Informatica
5 1 (1.43%) InterSystems
5 1 (1.43%) Sencha
5 1 (1.43%) Sitecore
5 1 (1.43%) Sparx
5 1 (1.43%) Sybase
5 1 (1.43%) Workday