Period
to 18 February 2018

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 18 February 2018 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
18 Feb 2018
Same period 2017 Same period 2016
Rank 101 86 144
Rank change year-on-year -15 +58 -30
Contract jobs citing JSON 168 177 91
As % of all contract IT jobs advertised in the City of London 2.40% 2.89% 1.35%
As % of the Libraries, Frameworks & Software Standards category 6.28% 8.02% 4.24%
Number of daily rates quoted 138 153 80
City of London median daily rate £450 £500 £450
Median daily rate % change year-on-year -10.00% +11.11% +15.40%
10th Percentile £388 £351 £307
90th Percentile £621 £610 £613
Central London median daily rate £450 £500 £400
% change year-on-year -10.00% +25.00% -
Number of hourly rates quoted 0 0 1
City of London median hourly rate - - £20.50
Central London median hourly rate - - £20.50

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 2,675 2,207 2,145
As % of all contract IT jobs advertised in the City of London 38.17% 36.04% 31.79%
Number of daily rates quoted 2,290 1,871 1,799
City of London median daily rate £513 £488 £475
Median daily rate % change year-on-year +5.13% +2.63% +5.56%
10th Percentile £363 £325 £313
90th Percentile £675 £650 £638
Central London median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% +2.86%
Number of hourly rates quoted 9 1 9
City of London median hourly rate £21.50 £54.25 £37.50
Median hourly rate % change year-on-year -60.37% +44.65% +30.73%
10th Percentile £21.15 £51.62 £19.95
90th Percentile £52.10 £56.87 £60.00
Central London median hourly rate £21.50 £54.25 £37.50
% change year-on-year -60.37% +44.65% +25.00%

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 18 February 2018.

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

JSON
Contract Job Locations in the City of London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing JSON within the City of London region over the 6 months to 18 February 2018. 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
London Bridge - 1 £425 -
JSON
Central London

For the 6 months to 18 February 2018, 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 86 (51.19%) Agile Software Development
2 80 (47.62%) Java
3 75 (44.64%) XML
4 74 (44.05%) REST
5 63 (37.50%) TDD
6 61 (36.31%) C#
7 60 (35.71%) JavaScript
8 55 (32.74%) .NET
9 53 (31.55%) Web Services
10 52 (30.95%) SQL
11 48 (28.57%) HTML
11 48 (28.57%) SOAP
12 46 (27.38%) SQL Server
13 43 (25.60%) Scrum
14 41 (24.40%) Git (software)
15 40 (23.81%) Finance
16 38 (22.62%) AngularJS
17 37 (22.02%) RESTful
18 36 (21.43%) Node.js
19 35 (20.83%) Jenkins
20 32 (19.05%) RabbitMQ
21 31 (18.45%) Microsoft Azure
22 29 (17.26%) Linux
23 28 (16.67%) DevOps
24 27 (16.07%) ASP.NET Web API
24 27 (16.07%) API Development
25 26 (15.48%) HTML5
25 26 (15.48%) Microsoft
26 25 (14.88%) Spring
26 25 (14.88%) Legal

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 (5.36%) Apache
2 8 (4.76%) Confluence
3 6 (3.57%) WildFly
4 4 (2.38%) Apache Spark
4 4 (2.38%) Tomcat
5 2 (1.19%) Apache Solr
5 2 (1.19%) Ethereum
5 2 (1.19%) JBoss
5 2 (1.19%) Mule
5 2 (1.19%) SAS
5 2 (1.19%) SharePoint
6 1 (0.60%) GemFire
6 1 (0.60%) Gunicorn
6 1 (0.60%) Hyperledger
6 1 (0.60%) Liferay
6 1 (0.60%) Mule ESB
6 1 (0.60%) WebLogic
6 1 (0.60%) WebSphere
Applications
1 8 (4.76%) Microsoft Excel
2 3 (1.79%) MS Visio
2 3 (1.79%) Spreadsheet
Business Applications
1 1 (0.60%) Distributed Ledger
1 1 (0.60%) Dynamics CRM
Cloud Services
1 31 (18.45%) Microsoft Azure
2 22 (13.10%) Amazon AWS
3 12 (7.14%) GitHub
4 7 (4.17%) npm
5 5 (2.98%) PaaS
5 5 (2.98%) SaaS
6 3 (1.79%) Amazon S3
6 3 (1.79%) Google Cloud Platform
7 2 (1.19%) Amazon EC2
7 2 (1.19%) Cloud Computing
7 2 (1.19%) Yarn
8 1 (0.60%) Amazon SQS
8 1 (0.60%) Firebase
8 1 (0.60%) Force.com
8 1 (0.60%) IaaS
8 1 (0.60%) Route 53
8 1 (0.60%) Salesforce Sales Cloud
8 1 (0.60%) Salesforce Service Cloud
8 1 (0.60%) Serverless
8 1 (0.60%) Virtual Private Cloud
Communications & Networking
1 19 (11.31%) HTTP
2 4 (2.38%) Bluetooth
2 4 (2.38%) DNS
3 3 (1.79%) Firewall
3 3 (1.79%) Internet
3 3 (1.79%) MPLS
3 3 (1.79%) VPLS
4 2 (1.19%) LAN
4 2 (1.19%) snoop
4 2 (1.19%) WAN
5 1 (0.60%) DSL
5 1 (0.60%) HTTPS
5 1 (0.60%) Network Security
5 1 (0.60%) SSH
5 1 (0.60%) SSL
5 1 (0.60%) TCP/IP
Database & Business Intelligence
1 46 (27.38%) SQL Server
2 13 (7.74%) Big Data
2 13 (7.74%) NoSQL
3 12 (7.14%) MySQL
4 11 (6.55%) Relational Database
5 8 (4.76%) PostgreSQL
6 7 (4.17%) Hadoop
6 7 (4.17%) HBase
6 7 (4.17%) MongoDB
7 6 (3.57%) RDBMS
7 6 (3.57%) SQL Server 2014
8 5 (2.98%) SQL Server 2012
9 4 (2.38%) Data Warehouse
9 4 (2.38%) SQL Server 2016
10 3 (1.79%) Apache Hive
10 3 (1.79%) OLTP
10 3 (1.79%) Power BI
10 3 (1.79%) Redis
11 2 (1.19%) Apache Cassandra
11 2 (1.19%) SQL Server 2008
Development Applications
1 41 (24.40%) Git (software)
2 35 (20.83%) Jenkins
3 20 (11.90%) JIRA
4 16 (9.52%) Team Foundation Server
5 15 (8.93%) Visual Studio
6 13 (7.74%) Visual Studio Team System
7 11 (6.55%) JUnit
7 11 (6.55%) Maven
8 10 (5.95%) Selenium
9 9 (5.36%) Cucumber
10 7 (4.17%) Gradle
11 6 (3.57%) Subversion
12 5 (2.98%) Babel
12 5 (2.98%) Crashlytics
12 5 (2.98%) TeamCity
12 5 (2.98%) webpack
13 4 (2.38%) Bitbucket
13 4 (2.38%) JMeter
13 4 (2.38%) Mockito
13 4 (2.38%) WebDriver
General
1 40 (23.81%) Finance
2 25 (14.88%) Legal
3 16 (9.52%) Banking
4 12 (7.14%) Law
5 11 (6.55%) Marketing
6 6 (3.57%) Manufacturing
7 5 (2.98%) Retail Banking
8 4 (2.38%) Telecoms
9 3 (1.79%) Advertising
9 3 (1.79%) Electronics
9 3 (1.79%) Retail
9 3 (1.79%) Retail Finance
10 2 (1.19%) Front Office
11 1 (0.60%) Financial Institution
11 1 (0.60%) Investment Banking
Job Titles
1 114 (67.86%) Developer
2 26 (15.48%) Java Developer
3 16 (9.52%) DevOps Engineer
4 15 (8.93%) Azure DevOps
4 15 (8.93%) Azure DevOps Engineer
4 15 (8.93%) Azure Engineer
4 15 (8.93%) JavaScript Developer
5 13 (7.74%) Full Stack Developer
6 12 (7.14%) Agile Developer
6 12 (7.14%) Microsoft Developer
6 12 (7.14%) Senior Developer
7 11 (6.55%) C# Developer
8 10 (5.95%) Android Developer
9 9 (5.36%) Architect
9 9 (5.36%) Automation Engineer
10 8 (4.76%) Analyst
11 6 (3.57%) .NET Developer
11 6 (3.57%) Angular Developer
11 6 (3.57%) Developer in Test
11 6 (3.57%) SQL Developer
Libraries, Frameworks & Software Standards
1 75 (44.64%) XML
2 74 (44.05%) REST
3 55 (32.74%) .NET
4 53 (31.55%) Web Services
5 48 (28.57%) HTML
5 48 (28.57%) SOAP
6 38 (22.62%) AngularJS
7 37 (22.02%) RESTful
8 36 (21.43%) Node.js
9 32 (19.05%) RabbitMQ
10 27 (16.07%) ASP.NET Web API
11 26 (15.48%) HTML5
12 25 (14.88%) Spring
13 23 (13.69%) CSS
14 20 (11.90%) React
15 18 (10.71%) WCF
16 15 (8.93%) Kafka
17 14 (8.33%) Hibernate
18 12 (7.14%) Redux
19 11 (6.55%) Spring Boot
Miscellaneous
1 6 (3.57%) Analytical Skills
2 5 (2.98%) Data Structures
2 5 (2.98%) Greenfield Project
2 5 (2.98%) Mobile App
3 4 (2.38%) Computer Science
4 3 (1.79%) Algorithms
4 3 (1.79%) Foreign Exchange (FX)
4 3 (1.79%) Mainframe
5 2 (1.19%) Derivative
5 2 (1.19%) Hybrid Cloud
5 2 (1.19%) PKI
5 2 (1.19%) Reinsurance
5 2 (1.19%) User Experience
6 1 (0.60%) Clustering
6 1 (0.60%) CMDB
6 1 (0.60%) Credit Risk
6 1 (0.60%) Fixed Income
6 1 (0.60%) Market Risk
6 1 (0.60%) Replication
6 1 (0.60%) Wiki
Operating Systems
1 29 (17.26%) Linux
2 23 (13.69%) Windows
3 18 (10.71%) Unix
4 16 (9.52%) Android
5 12 (7.14%) Windows Server
6 11 (6.55%) Apple iOS
7 1 (0.60%) HPUX
7 1 (0.60%) Solaris
7 1 (0.60%) Windows Server 2008
7 1 (0.60%) Windows Server 2012
Processes & Methodologies
1 86 (51.19%) Agile Software Development
2 63 (37.50%) TDD
3 43 (25.60%) Scrum
4 28 (16.67%) DevOps
5 27 (16.07%) API Development
6 21 (12.50%) OOP
7 20 (11.90%) Test Automation
8 18 (10.71%) Continuous Integration
9 16 (9.52%) OOD
10 15 (8.93%) BDD
10 15 (8.93%) Multithreading
10 15 (8.93%) OO
11 14 (8.33%) MVC
12 13 (7.74%) Android Development
12 13 (7.74%) Kanban
12 13 (7.74%) Software Engineering
13 12 (7.14%) Test Scripting
14 11 (6.55%) API Integration
14 11 (6.55%) Document Management
14 11 (6.55%) User Stories
Programming Languages
1 80 (47.62%) Java
2 61 (36.31%) C#
3 60 (35.71%) JavaScript
4 52 (30.95%) SQL
5 22 (13.10%) PowerShell
6 10 (5.95%) Python
7 9 (5.36%) T-SQL
8 8 (4.76%) PL/SQL
9 7 (4.17%) ES6
9 7 (4.17%) Ruby
10 5 (2.98%) R
11 4 (2.38%) Apple Swift
11 4 (2.38%) PHP
11 4 (2.38%) XPath
12 3 (1.79%) Apex Code
12 3 (1.79%) Go
12 3 (1.79%) Shell Script
12 3 (1.79%) TypeScript
12 3 (1.79%) VBA
13 2 (1.19%) Groovy
Qualifications
1 9 (5.36%) Security Cleared
2 6 (3.57%) Degree
2 6 (3.57%) SC Cleared
3 2 (1.19%) Computer Science Degree
3 2 (1.19%) DV Cleared
3 2 (1.19%) Master's Degree
4 1 (0.60%) ISTQB
4 1 (0.60%) Numerate Degree
Quality Assurance & Compliance
1 8 (4.76%) MiFID
2 7 (4.17%) QA
3 2 (1.19%) Data Quality
3 2 (1.19%) Dodd-Frank
3 2 (1.19%) EMIR
System Software
1 23 (13.69%) Active Directory
2 15 (8.93%) Docker
3 2 (1.19%) HDFS
4 1 (0.60%) Virtual Machines
Systems Management
1 3 (1.79%) Puppet
2 2 (1.19%) Ansible
2 2 (1.19%) Opscode Chef
2 2 (1.19%) Rundeck
3 1 (0.60%) BladeLogic
3 1 (0.60%) Cisco IPCC
3 1 (0.60%) Matomo
3 1 (0.60%) Single Sign-On
3 1 (0.60%) Terraform
3 1 (0.60%) WSUS
Vendors
1 26 (15.48%) Microsoft
2 24 (14.29%) Apigee
3 10 (5.95%) Oracle
4 6 (3.57%) Salesforce.com
5 3 (1.79%) Alteryx
5 3 (1.79%) Atlassian
5 3 (1.79%) Google
5 3 (1.79%) SAP
5 3 (1.79%) ServiceNow
5 3 (1.79%) TSYS
6 2 (1.19%) DevExpress
6 2 (1.19%) Infragistics
6 2 (1.19%) RedGate
6 2 (1.19%) Reuters
6 2 (1.19%) Solace
6 2 (1.19%) Syncfusion
6 2 (1.19%) Talend
6 2 (1.19%) Telerik
6 2 (1.19%) TIBCO
6 2 (1.19%) Vertica