The following table provides summary statistics for contract job vacancies advertised in 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 3 months to 24 June 2017 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
England / London
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 104 120 109
Rank change year-on-year +16 -11  
Contract jobs citing JSON 516 451 475
As % of all contract IT jobs advertised in London 2.52% 2.08% 2.03%
As % of the Libraries, Frameworks & Software Standards category 7.05% 6.41% 6.49%
Number of daily rates quoted 357 364 348
Median daily rate £475 £450 £413
Median daily rate % change year-on-year +5.55% +9.09%  
90% offered a daily rate of more than £375 £363 £310
10% offered a daily rate of more than £600 £570 £550
UK excluding London median daily rate £425 £400 £375
% change year-on-year +6.25% +6.66%  
Number of hourly rates quoted 3 1 5
Median hourly rate £22.50 £51.00 £19.72
Median hourly rate % change year-on-year -55.88% +158.68%  
UK excluding London median hourly rate £41.50 £29.14 £55.00
% change year-on-year +42.41% -47.01%  

JSON is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
London
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 7322 7035 7321
As % of all contract IT job vacancies advertised in London 35.82% 32.46% 31.29%
Number of daily rates quoted 5438 5395 5313
Median daily rate £480 £450 £425
Median daily rate % change year-on-year +6.66% +5.88%  
90% offered a daily rate of more than £350 £325 £310
10% offered a daily rate of more than £600 £600 £575
UK excluding London median daily rate £398 £375 £350
% change year-on-year +6.00% +7.14%  
Number of hourly rates quoted 50 25 50
Median hourly rate £35.00 £40.00 £22.50
Median hourly rate % change year-on-year -12.50% +77.77%  
90% offered a hourly rate of more than £16.00 £20.00 £16.13
10% offered a hourly rate of more than £55.00 £190.00 £60.00
UK excluding London median hourly rate £42.50 £36.00 £40.00
% change year-on-year +18.05% -10.00%  

JSON
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing JSON as a proportion of all contract or permanent IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for JSON in London

JSON
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for JSON in London

JSON
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing JSON in London over the 3 months to 24 June 2017.

Contractor daily rate histogram for JSON in London

JSON
Contractor Hourly Rate Trend in London

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

Contractor hourly rate trend for JSON in London

JSON
Contract Job Locations in 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 London region over the 3 months to 24 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London -1 79 £500 +17.64% 32
Osterley 0 8 £500 -2.91%
Canary Wharf +5 4 £600 +33.33%
Westminster +3 3 £575 +39.39% 1
Hammersmith -5 2 £650 +52.94% 1
Docklands, London - 2 £535 -
West End of London +9 1 £575 +43.75% 2
Feltham +5 1 £351 -17.52%
Croydon +1 1 - -
Kingston Upon Thames -10 1 £475 +18.01%
Twickenham - 1 £290 -
Chiswick - 1 £425 -
Heathrow - 1 £375 -
JSON
England

For the 6 months to 24 June 2017, IT contractor jobs citing JSON also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the London region with a requirement for JSON.

1 597 (60.98%) Agile Software Development
2 439 (44.84%) Java
3 418 (42.70%) XML
4 380 (38.82%) JavaScript
5 345 (35.24%) REST
6 328 (33.50%) HTML
7 327 (33.40%) CSS
8 312 (31.87%) TDD
9 289 (29.52%) Scrum
10 277 (28.29%) Web Services
11 264 (26.97%) Git (software)
12 263 (26.86%) SQL
13 251 (25.64%) Finance
14 228 (23.29%) AngularJS
15 211 (21.55%) RESTful
16 188 (19.20%) HTML5
17 187 (19.10%) Test Automation
18 183 (18.69%) Banking
19 179 (18.28%) Spring
19 179 (18.28%) Linux
20 177 (18.08%) jQuery
21 176 (17.98%) Jenkins
22 175 (17.88%) SOAP
23 161 (16.45%) Node.js
24 158 (16.14%) OO
25 141 (14.40%) Python
26 137 (13.99%) JIRA
26 137 (13.99%) CSS3
27 136 (13.89%) Continuous Integration
28 127 (12.97%) Maven

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 64 (6.54%) Tomcat
2 51 (5.21%) CMS
2 51 (5.21%) Confluence
3 42 (4.29%) WebSphere
4 39 (3.98%) JBoss
5 38 (3.88%) Apache
6 34 (3.47%) Oracle SOA Suite
7 30 (3.06%) Mule
8 25 (2.55%) Elasticsearch
9 23 (2.35%) WebLogic
10 21 (2.15%) Apache Spark
10 21 (2.15%) IIS
11 19 (1.94%) Adobe Experience Manager
12 16 (1.63%) nginx
13 14 (1.43%) Oracle Service Bus
14 11 (1.12%) Apache Solr
14 11 (1.12%) SharePoint
15 10 (1.02%) MQSeries
16 9 (0.92%) OpenStack
16 9 (0.92%) WordPress
Applications
1 10 (1.02%) Microsoft Excel
2 2 (0.20%) Microsoft Project
2 2 (0.20%) MS Visio
2 2 (0.20%) Photoshop
2 2 (0.20%) Spreadsheet
3 1 (0.10%) 3ds Max
3 1 (0.10%) Adobe Illustrator
Business Applications
1 33 (3.37%) SAP Oil and Gas
2 5 (0.51%) Dynamics CRM
3 4 (0.41%) Eloqua
4 3 (0.31%) Oracle BPM
5 2 (0.20%) NetSuite
5 2 (0.20%) Oracle EBS
5 2 (0.20%) Oracle ERP
5 2 (0.20%) Siebel CRM
5 2 (0.20%) Workday HCM
6 1 (0.10%) Actimize
6 1 (0.10%) BASE24
6 1 (0.10%) Dynamics AX
6 1 (0.10%) Global One
6 1 (0.10%) Payment Gateway
6 1 (0.10%) RMDS
6 1 (0.10%) Salesforce.com CRM
Cloud Services
1 118 (12.05%) Amazon AWS
2 52 (5.31%) Microsoft Azure
3 33 (3.37%) GitHub
3 33 (3.37%) PaaS
4 31 (3.17%) SaaS
5 17 (1.74%) Amazon EC2
5 17 (1.74%) Salesforce Service Cloud
6 16 (1.63%) Cloud Computing
7 15 (1.53%) IaaS
8 13 (1.33%) Amazon S3
9 11 (1.12%) Office 365
10 8 (0.82%) AWS Lambda
10 8 (0.82%) Force.com
10 8 (0.82%) Virtual Private Cloud
11 7 (0.72%) AWS CloudFormation
11 7 (0.72%) Heroku
11 7 (0.72%) SuccessFactors
12 5 (0.51%) AWS Elastic Beanstalk
13 4 (0.41%) Amazon ELB
13 4 (0.41%) Azure Active Directory
Communications & Networking
1 77 (7.87%) HTTP
2 21 (2.15%) TCP/IP
3 18 (1.84%) Internet
3 18 (1.84%) SSL
4 17 (1.74%) DNS
5 13 (1.33%) VPN
6 10 (1.02%) Intranet
7 9 (0.92%) Firewall
8 7 (0.72%) HTTPS
8 7 (0.72%) Wi-Fi
9 6 (0.61%) Network Security
10 5 (0.51%) Wireshark
11 4 (0.41%) tcpdump
12 3 (0.31%) Bluetooth
12 3 (0.31%) FTP
12 3 (0.31%) LDAP
12 3 (0.31%) MPLS
13 2 (0.20%) LAN
13 2 (0.20%) SMTP
13 2 (0.20%) WAN
Database & Business Intelligence
1 109 (11.13%) MongoDB
2 99 (10.11%) Relational Database
3 85 (8.68%) NoSQL
4 80 (8.17%) MySQL
5 76 (7.76%) SQL Server
6 71 (7.25%) Big Data
7 61 (6.23%) PostgreSQL
8 43 (4.39%) Hadoop
9 31 (3.17%) RDBMS
9 31 (3.17%) SQLite
10 27 (2.76%) Apache Cassandra
11 26 (2.66%) DB2
12 23 (2.35%) Apache Hive
13 22 (2.25%) BusinessObjects
14 20 (2.04%) Redis
15 14 (1.43%) Data Warehouse
16 11 (1.12%) Endeca
16 11 (1.12%) SQL Server 2012
17 10 (1.02%) Blockchain
17 10 (1.02%) Hazelcast
Development Applications
1 264 (26.97%) Git (software)
2 176 (17.98%) Jenkins
3 137 (13.99%) JIRA
4 127 (12.97%) Maven
5 92 (9.40%) Cucumber
6 80 (8.17%) Subversion
7 79 (8.07%) JUnit
8 58 (5.92%) Gradle
9 57 (5.82%) TeamCity
10 52 (5.31%) Selenium
11 44 (4.49%) Mockito
12 39 (3.98%) Bitbucket
13 37 (3.78%) Jasmine
14 36 (3.68%) gulp
15 33 (3.37%) Ant
16 25 (2.55%) Grunt
16 25 (2.55%) Visual Studio
17 24 (2.45%) Hudson
18 22 (2.25%) Eclipse
18 22 (2.25%) WebDriver
General
1 251 (25.64%) Finance
2 183 (18.69%) Banking
3 51 (5.21%) Marketing
4 47 (4.80%) Telecoms
5 41 (4.19%) Retail
6 37 (3.78%) Manufacturing
7 33 (3.37%) Electronics
8 31 (3.17%) Front Office
9 29 (2.96%) Investment Banking
10 19 (1.94%) Games
11 15 (1.53%) Law
12 12 (1.23%) Advertising
12 12 (1.23%) Legal
13 5 (0.51%) Financial Institution
14 4 (0.41%) Back Office
14 4 (0.41%) Corporate Banking
14 4 (0.41%) Publishing
15 3 (0.31%) Retail Banking
16 2 (0.20%) Multimedia
17 1 (0.10%) Billing
Job Titles
1 716 (73.14%) Developer
2 183 (18.69%) Java Developer
3 107 (10.93%) Senior Developer
4 73 (7.46%) Android Developer
5 69 (7.05%) Front End Developer (Client-Side Developer)
6 66 (6.74%) Architect
7 55 (5.62%) JavaScript Developer
8 50 (5.11%) Full Stack Developer
9 45 (4.60%) Angular Developer
10 42 (4.29%) .NET Developer
11 38 (3.88%) Web Developer
12 37 (3.78%) Scala Developer
13 35 (3.58%) Tester
14 33 (3.37%) Software Developer
15 32 (3.27%) C# Developer
15 32 (3.27%) UI Developer
16 29 (2.96%) Analyst
16 29 (2.96%) Automation Tester
17 28 (2.86%) iOS Developer
18 26 (2.66%) Consultant
Libraries, Frameworks & Software Standards
1 418 (42.70%) XML
2 345 (35.24%) REST
3 328 (33.50%) HTML
4 327 (33.40%) CSS
5 277 (28.29%) Web Services
6 228 (23.29%) AngularJS
7 211 (21.55%) RESTful
8 188 (19.20%) HTML5
9 179 (18.28%) Spring
10 177 (18.08%) jQuery
11 175 (17.88%) SOAP
12 161 (16.45%) Node.js
13 137 (13.99%) CSS3
14 125 (12.77%) Ajax
15 118 (12.05%) .NET
16 113 (11.54%) React
17 87 (8.89%) Hibernate
18 81 (8.27%) Sass
19 78 (7.97%) XSLT
20 72 (7.35%) Swagger
Miscellaneous
1 84 (8.58%) User Experience
2 69 (7.05%) Mobile App
3 49 (5.01%) Greenfield Project
4 38 (3.88%) Analytical Skills
4 38 (3.88%) Computer Science
5 35 (3.58%) Data Structures
6 34 (3.47%) Enterprise Software
7 22 (2.25%) Algorithms
8 21 (2.15%) Foreign Exchange (FX)
9 16 (1.63%) Fintech
9 16 (1.63%) Web 2.0
10 15 (1.53%) Video on Demand
11 14 (1.43%) Management Information System
12 13 (1.33%) iPad
13 10 (1.02%) Derivative
13 10 (1.02%) Equities
13 10 (1.02%) iPhone
13 10 (1.02%) Private Cloud
13 10 (1.02%) Public Cloud
14 9 (0.92%) W3C
Operating Systems
1 179 (18.28%) Linux
2 101 (10.32%) Unix
3 92 (9.40%) Android
4 69 (7.05%) Windows
5 46 (4.70%) Apple iOS
6 24 (2.45%) Windows Server
7 19 (1.94%) CentOS
8 17 (1.74%) Ubuntu
9 11 (1.12%) Solaris
10 10 (1.02%) HPUX
10 10 (1.02%) Red Hat Enterprise Linux
11 7 (0.72%) Mac OS X
11 7 (0.72%) Windows Server 2008
11 7 (0.72%) Windows Server 2012
12 2 (0.20%) Mac OS X Server
13 1 (0.10%) Kali Linux
13 1 (0.10%) Oracle Linux
13 1 (0.10%) webOS
13 1 (0.10%) Windows Phone
13 1 (0.10%) Windows Phone 7
Processes & Methodologies
1 597 (60.98%) Agile Software Development
2 312 (31.87%) TDD
3 289 (29.52%) Scrum
4 187 (19.10%) Test Automation
5 158 (16.14%) OO
6 136 (13.89%) Continuous Integration
7 110 (11.24%) BDD
8 106 (10.83%) MVC
9 105 (10.73%) Kanban
10 103 (10.52%) Web Development
11 101 (10.32%) DevOps
12 97 (9.91%) E-Commerce
13 95 (9.70%) Microservices
14 92 (9.40%) SOA
15 91 (9.30%) Front End Development
16 79 (8.07%) Unit Testing
17 78 (7.97%) Android Development
18 76 (7.76%) Analytics
19 72 (7.35%) Business Intelligence
20 68 (6.95%) Continuous Delivery
Programming Languages
1 439 (44.84%) Java
2 380 (38.82%) JavaScript
3 263 (26.86%) SQL
4 141 (14.40%) Python
5 106 (10.83%) C#
6 91 (9.30%) Ruby
7 76 (7.76%) Scala
8 72 (7.35%) Shell Script
9 43 (4.39%) Bash Shell
9 43 (4.39%) PHP
10 40 (4.09%) C++
11 31 (3.17%) ES6
11 31 (3.17%) Perl
12 29 (2.96%) PL/SQL
13 28 (2.86%) Apple Swift
13 28 (2.86%) T-SQL
14 27 (2.76%) C
15 26 (2.66%) XPath
16 25 (2.55%) Objective-C
16 25 (2.55%) R
Qualifications
1 71 (7.25%) Degree
2 36 (3.68%) Security Cleared
3 34 (3.47%) SC Cleared
4 22 (2.25%) Computer Science Degree
5 11 (1.12%) Master's Degree
6 4 (0.41%) ISEB
6 4 (0.41%) ISTQB
7 2 (0.20%) AWS Certification
7 2 (0.20%) BPSS Clearance
8 1 (0.10%) CFA
8 1 (0.10%) DV Cleared
8 1 (0.10%) ISTQB Foundation Certification
8 1 (0.10%) Microsoft Certification
8 1 (0.10%) PMI Certification
8 1 (0.10%) PMP
8 1 (0.10%) Sun Certification
Quality Assurance & Compliance
1 62 (6.33%) QA
2 27 (2.76%) MiFID
3 23 (2.35%) Dodd-Frank
3 23 (2.35%) EMIR
4 6 (0.61%) FATCA
5 2 (0.20%) COBIT
5 2 (0.20%) Data Quality
5 2 (0.20%) WAI
6 1 (0.10%) WCAG
System Software
1 48 (4.90%) Docker
2 23 (2.35%) Active Directory
3 11 (1.12%) VMware Infrastructure
4 5 (0.51%) Virtual Machines
5 3 (0.31%) Apache ZooKeeper
5 3 (0.31%) HDFS
6 2 (0.20%) Hyper-V
6 2 (0.20%) UAG
6 2 (0.20%) VirtualBox
6 2 (0.20%) VMware ESXi
7 1 (0.10%) Apache Flume
7 1 (0.10%) Firmware
7 1 (0.10%) Varnish
Systems Management
1 37 (3.78%) Ansible
2 26 (2.66%) Opscode Chef
2 26 (2.66%) Puppet
3 11 (1.12%) Kubernetes
4 10 (1.02%) Piwik
5 8 (0.82%) Nagios
6 6 (0.61%) Terraform
7 5 (0.51%) Grafana
7 5 (0.51%) Mesos
7 5 (0.51%) ZABBIX
8 4 (0.41%) Docker Swarm
8 4 (0.41%) Graphite
8 4 (0.41%) Icinga
8 4 (0.41%) Salt
8 4 (0.41%) StatsD
9 3 (0.31%) HockeyApp
9 3 (0.31%) MOM
10 2 (0.20%) Kibana
10 2 (0.20%) Norton AntiVirus
10 2 (0.20%) SCCM
Vendors
1 108 (11.03%) Oracle
2 53 (5.41%) Microsoft
3 51 (5.21%) SAP
4 40 (4.09%) Salesforce.com
5 25 (2.55%) Perforce
6 24 (2.45%) Google
6 24 (2.45%) Red Hat
7 23 (2.35%) Adobe
8 22 (2.25%) IBM
9 19 (1.94%) Apple
9 19 (1.94%) MuleSoft
10 18 (1.84%) ServiceNow
11 12 (1.23%) WSO2
12 11 (1.12%) Splunk
12 11 (1.12%) VMware
13 10 (1.02%) Pardot
14 9 (0.92%) Informatica
14 9 (0.92%) Solace
14 9 (0.92%) Telerik
15 8 (0.82%) Xamarin
London
Volt
Rate: £500.00 - £550.00 per day
Posted: Yesterday
London
Salt
Rate: £400 - £450 per day
Posted: 4 days ago
London
IntaPeople
Rate: £400 - £465 per day
Posted: 2 days ago
London
Computer People
Posted: 2 days ago
London
Volt
Rate: £400.00 - £420.00 per day
Posted: Yesterday
Central London / West End
Trust In Soda
Rate: From £450 to £460 per day
Posted: Yesterday
London
Volt
Rate: £450 - £550.00 per day
Posted: Yesterday
City, London
Salt
Rate: £400.00 - £500.00 per day
Posted: 4 days ago
North London
Coded People
Rate: £250 - £300 per day
Posted: 3 days ago
London
Networking People
Rate: £300 - £340 per day + Long term contract
Posted: 3 days ago
London
Roc Search
Rate: £300 - £340 per day
Posted: 2 days ago
East London
Careerwise UK Limited
Rate: £500 - £550 per day
Posted: 3 days ago
City, London
IntaPeople
Rate: £350 - £400 per day
Posted: 2 days ago
City, London
Understanding Recruitment
Rate: £400 - £500 per day
Posted: 4 days ago
London
Haybrook IT Resourcing Ltd
Rate: Up to £600 per annum
Posted: 2 days ago
City, London
Haybrook IT Resourcing Ltd
Rate: Up to £500 per day
Posted: 2 days ago
London
TEKsystems
Rate: Market Rate
Posted: 5 days ago
London
Spencer Rose
Rate: From £300 to £500 per day
Posted: 5 days ago
London
AMS contingency
Posted: 12 days ago
London
Careerwise UK Limited
Rate: £400 - £425 per day
Posted: 4 days ago
City, London
I3
Rate: £525 - £550 per day
Posted: 5 days ago
London
People Source Consulting
Rate: £420 - £450 per day
Posted: 20 days ago
London
People Source Consulting
Rate: £420 - £460 per day
Posted: 17 days ago
London
Deltaclass Technology Solutions Ltd
Rate: Competitive
Posted: 26 days ago
London
CPS Group Limited
Rate: £500 - £501550 per day
Posted: 20 days ago
London
People Source Consulting
Rate: £500 - £600 per day
Posted: 17 days ago
London
People Source Consulting
Rate: £550 - £600 per day
Posted: 16 days ago