Period
to 24 November 2017

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 6 months to 24 November 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
6 months to
24 Nov 2017
Same period 2016 Same period 2015
Rank 98 100 126
Rank change year-on-year +2 +26 +1
Contract jobs citing JSON 1224 1178 882
As % of all contract IT jobs advertised in London 2.60% 2.61% 1.88%
As % of the Libraries, Frameworks & Software Standards category 7.03% 7.60% 5.82%
Number of daily rates quoted 915 907 662
London median daily rate £475 £460 £440
Median daily rate % change year-on-year +3.26% +4.55% +10.00%
10th Percentile £358 £325 £313
90th Percentile £638 £588 £557
England median daily rate £450 £429 £400
% change year-on-year +4.90% +7.25% +2.56%
Number of hourly rates quoted 1 4 4
London median hourly rate £42.50 £32.64 £42.12
Median hourly rate % change year-on-year +30.21% -22.50% -6.41%
10th Percentile £41.25 £30.00 £21.09
90th Percentile £43.75 £35.52 £153.63
England median hourly rate £45.00 £36.25 £35.00
% change year-on-year +24.14% +3.57% -3.45%

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

All Software Libraries and Frameworks
London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 17407 15497 15146
As % of all contract IT jobs advertised in London 36.96% 34.36% 32.26%
Number of daily rates quoted 13288 11591 11283
London median daily rate £500 £465 £450
Median daily rate % change year-on-year +7.53% +3.33% +5.88%
10th Percentile £350 £319 £308
90th Percentile £650 £625 £625
England median daily rate £463 £425 £413
% change year-on-year +8.82% +3.03% +3.13%
Number of hourly rates quoted 102 72 92
London median hourly rate £35.00 £40.00 £35.00
Median hourly rate % change year-on-year -12.50% +14.29% -
10th Percentile £19.50 £19.23 £14.25
90th Percentile £50.00 £57.44 £55.00
England median hourly rate £40.00 £37.50 £37.50
% change year-on-year +6.67% - +10.29%

JSON
Job Vacancy Trend in London

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

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 6 months to 24 November 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 6 months to 24 November 2017. 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
Central London 0 246 £450 -3.74% 28
West London -22 57 £425 - 6
South London -6 27 £475 +34.28% 9
East London -9 17 £531 +3.66% 6
North London - 4 £388 - 1
JSON
England

For the 6 months to 24 November 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.

1 727 (59.40%) Agile Software Development
2 598 (48.86%) Java
3 485 (39.62%) XML
4 476 (38.89%) JavaScript
5 439 (35.87%) REST
6 400 (32.68%) HTML
7 393 (32.11%) Web Services
8 353 (28.84%) TDD
9 343 (28.02%) CSS
10 328 (26.80%) Git (software)
11 323 (26.39%) SQL
12 296 (24.18%) Scrum
13 292 (23.86%) RESTful
14 255 (20.83%) AngularJS
15 243 (19.85%) Finance
16 223 (18.22%) HTML5
17 217 (17.73%) Node.js
18 215 (17.57%) SOAP
19 212 (17.32%) Amazon AWS
20 205 (16.75%) Spring
21 203 (16.58%) Jenkins
22 200 (16.34%) Test Automation
23 193 (15.77%) Linux
23 193 (15.77%) .NET
24 185 (15.11%) SQL Server
25 183 (14.95%) jQuery
26 178 (14.54%) JIRA
27 170 (13.89%) C#
28 168 (13.73%) Python
29 162 (13.24%) React

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 70 (5.72%) Confluence
2 63 (5.15%) Apache
3 53 (4.33%) Tomcat
4 51 (4.17%) Apache Spark
5 37 (3.02%) JBoss
6 33 (2.70%) Apache Solr
7 32 (2.61%) Elasticsearch
8 28 (2.29%) CMS
9 14 (1.14%) WebSphere
10 13 (1.06%) nginx
10 13 (1.06%) SharePoint
11 12 (0.98%) Adobe Experience Manager
11 12 (0.98%) IIS
12 10 (0.82%) OpenStack
13 9 (0.74%) Cloud Foundry
13 9 (0.74%) Mule
13 9 (0.74%) WildFly
14 7 (0.57%) MQSeries
15 6 (0.49%) SAS
15 6 (0.49%) WebLogic
Applications
1 9 (0.74%) Microsoft Excel
2 6 (0.49%) MS Visio
3 5 (0.41%) HipChat
4 4 (0.33%) Photoshop
5 3 (0.25%) Microsoft Office
6 2 (0.16%) InfoPath
7 1 (0.082%) Gephi
7 1 (0.082%) Microsoft Project
Business Applications
1 10 (0.82%) Payment Gateway
2 6 (0.49%) Dynamics CRM
3 4 (0.33%) Shopify
4 3 (0.25%) Social Studio
4 3 (0.25%) WebTrends
5 2 (0.16%) Magento
5 2 (0.16%) SAP BPC
6 1 (0.082%) BASE24
6 1 (0.082%) Dynamics NAV
6 1 (0.082%) Remedy ITSM
6 1 (0.082%) RMDS
6 1 (0.082%) SAP CRM
6 1 (0.082%) Summit
Cloud Services
1 212 (17.32%) Amazon AWS
2 62 (5.07%) Microsoft Azure
3 45 (3.68%) Serverless
4 44 (3.59%) GitHub
4 44 (3.59%) npm
5 41 (3.35%) SaaS
6 31 (2.53%) Amazon EC2
7 30 (2.45%) PaaS
8 23 (1.88%) Amazon S3
9 22 (1.80%) Virtual Private Cloud
10 20 (1.63%) IaaS
11 19 (1.55%) Amazon ELB
12 18 (1.47%) AWS Lambda
13 16 (1.31%) Cloud Computing
13 16 (1.31%) Salesforce Service Cloud
14 15 (1.23%) AWS CloudFormation
14 15 (1.23%) Route 53
15 11 (0.90%) Office 365
15 11 (0.90%) Salesforce Sales Cloud
16 10 (0.82%) Force.com
Communications & Networking
1 69 (5.64%) HTTP
2 42 (3.43%) Internet
3 40 (3.27%) DNS
4 24 (1.96%) TCP/IP
5 22 (1.80%) Firewall
6 12 (0.98%) Bluetooth
7 11 (0.90%) Wi-Fi
8 10 (0.82%) FTP
9 9 (0.74%) VPN
10 8 (0.65%) HTTPS
10 8 (0.65%) MPLS
10 8 (0.65%) Network Security
10 8 (0.65%) SSH
11 6 (0.49%) DSL
11 6 (0.49%) LDAP
12 5 (0.41%) DHCP
12 5 (0.41%) LAN
12 5 (0.41%) SSL
12 5 (0.41%) VLAN
12 5 (0.41%) WAN
Database & Business Intelligence
1 185 (15.11%) SQL Server
2 149 (12.17%) Big Data
3 135 (11.03%) NoSQL
4 132 (10.78%) MongoDB
5 130 (10.62%) Relational Database
6 111 (9.07%) PostgreSQL
7 98 (8.01%) Hadoop
8 72 (5.88%) MySQL
9 58 (4.74%) HBase
10 52 (4.25%) RDBMS
11 38 (3.10%) BusinessObjects
12 37 (3.02%) Redis
13 32 (2.61%) Apache Cassandra
14 24 (1.96%) Apache Hive
15 20 (1.63%) Oracle Database
16 19 (1.55%) SQL Server 2014
17 17 (1.39%) Amazon RDS
17 17 (1.39%) Data Warehouse
18 14 (1.14%) SQL Server Integration Services
19 13 (1.06%) SQL Server 2012
Development Applications
1 328 (26.80%) Git (software)
2 203 (16.58%) Jenkins
3 178 (14.54%) JIRA
4 111 (9.07%) Cucumber
5 83 (6.78%) JUnit
6 77 (6.29%) Maven
7 63 (5.15%) Subversion
8 62 (5.07%) gulp
9 53 (4.33%) Grunt
10 50 (4.08%) Jasmine
11 49 (4.00%) webpack
12 47 (3.84%) TeamCity
13 46 (3.76%) Eclipse
14 45 (3.68%) IntelliJ
15 40 (3.27%) Selenium
16 37 (3.02%) Karma Test Runner
16 37 (3.02%) Mockito
17 35 (2.86%) Bitbucket
17 35 (2.86%) Gradle
18 33 (2.70%) Xcode
General
1 243 (19.85%) Finance
2 122 (9.97%) Banking
3 57 (4.66%) Marketing
4 47 (3.84%) Manufacturing
5 45 (3.68%) Retail
6 44 (3.59%) Telecoms
7 34 (2.78%) Electronics
8 31 (2.53%) Games
9 27 (2.21%) Legal
10 16 (1.31%) Front Office
10 16 (1.31%) Law
11 14 (1.14%) Publishing
12 13 (1.06%) Investment Banking
13 9 (0.74%) Advertising
14 7 (0.57%) Billing
15 5 (0.41%) Financial Institution
16 4 (0.33%) Music Industry
16 4 (0.33%) Retail Finance
17 3 (0.25%) Retail Banking
18 1 (0.082%) Wholesale Banking
Job Titles
1 877 (71.65%) Developer
2 268 (21.90%) Java Developer
3 110 (8.99%) Senior Developer
4 95 (7.76%) JavaScript Developer
5 86 (7.03%) Full Stack Developer
6 74 (6.05%) Front End Developer (Client-Side Developer)
7 67 (5.47%) Android Developer
8 65 (5.31%) Architect
9 61 (4.98%) Angular Developer
10 54 (4.41%) Software Developer
11 51 (4.17%) .NET Developer
12 50 (4.08%) DevOps Engineer
13 48 (3.92%) SQL Developer
14 43 (3.51%) Developer in Test
15 42 (3.43%) C# Developer
16 40 (3.27%) Tester
17 38 (3.10%) Agile Developer
17 38 (3.10%) Scala Developer
18 37 (3.02%) Java Software Developer
19 34 (2.78%) Software Engineer
Libraries, Frameworks & Software Standards
1 485 (39.62%) XML
2 439 (35.87%) REST
3 400 (32.68%) HTML
4 393 (32.11%) Web Services
5 343 (28.02%) CSS
6 292 (23.86%) RESTful
7 255 (20.83%) AngularJS
8 223 (18.22%) HTML5
9 217 (17.73%) Node.js
10 215 (17.57%) SOAP
11 205 (16.75%) Spring
12 193 (15.77%) .NET
13 183 (14.95%) jQuery
14 162 (13.24%) React
15 156 (12.75%) CSS3
16 109 (8.91%) Ajax
17 97 (7.92%) Kafka
18 84 (6.86%) RabbitMQ
19 81 (6.62%) Twitter Bootstrap
20 79 (6.45%) Hibernate
Miscellaneous
1 143 (11.68%) User Experience
2 90 (7.35%) Mobile App
3 73 (5.96%) Data Structures
4 57 (4.66%) Greenfield Project
5 34 (2.78%) Computer Science
6 33 (2.70%) Analytical Skills
6 33 (2.70%) Video on Demand
7 27 (2.21%) Algorithms
8 23 (1.88%) Video\Live Streaming
9 21 (1.72%) Enterprise Software
10 19 (1.55%) W3C
11 17 (1.39%) Linux Command Line
12 13 (1.06%) Online Games
13 12 (0.98%) Foreign Exchange (FX)
14 11 (0.90%) Smart Home
15 10 (0.82%) Data Centre
16 9 (0.74%) Fintech
17 8 (0.65%) Derivative
17 8 (0.65%) Semantic Web
17 8 (0.65%) Virtual Team
Operating Systems
1 193 (15.77%) Linux
2 115 (9.40%) Android
3 94 (7.68%) Unix
4 61 (4.98%) Windows
5 59 (4.82%) Apple iOS
6 20 (1.63%) Windows Server
7 17 (1.39%) Red Hat Enterprise Linux
8 15 (1.23%) Windows Server 2012
9 14 (1.14%) Mac OS X
10 9 (0.74%) CentOS
10 9 (0.74%) Solaris
11 7 (0.57%) HPUX
12 2 (0.16%) Fedora
13 1 (0.082%) AIX
13 1 (0.082%) Kali Linux
13 1 (0.082%) Windows Server 2008
Processes & Methodologies
1 727 (59.40%) Agile Software Development
2 353 (28.84%) TDD
3 296 (24.18%) Scrum
4 200 (16.34%) Test Automation
5 157 (12.83%) DevOps
6 155 (12.66%) BDD
7 148 (12.09%) Continuous Integration
8 146 (11.93%) MVC
9 142 (11.60%) OO
10 132 (10.78%) Front End Development
11 127 (10.38%) Kanban
12 123 (10.05%) Web Development
13 107 (8.74%) Microservices
14 105 (8.58%) Pair Programming
15 104 (8.50%) Analytics
16 98 (8.01%) Business Intelligence
17 93 (7.60%) Open Source
18 85 (6.94%) E-Commerce
19 82 (6.70%) Unit Testing
20 78 (6.37%) User Stories
Programming Languages
1 598 (48.86%) Java
2 476 (38.89%) JavaScript
3 323 (26.39%) SQL
4 170 (13.89%) C#
5 168 (13.73%) Python
6 113 (9.23%) Scala
7 110 (8.99%) Ruby
8 67 (5.47%) ES6
9 49 (4.00%) Shell Script
10 44 (3.59%) PHP
11 43 (3.51%) Groovy
11 43 (3.51%) T-SQL
12 42 (3.43%) R
13 40 (3.27%) C++
14 39 (3.19%) TypeScript
15 38 (3.10%) PL/SQL
16 33 (2.70%) Bash Shell
17 30 (2.45%) Apple Swift
18 29 (2.37%) Perl
19 27 (2.21%) ECMAScript
Qualifications
1 141 (11.52%) Security Cleared
2 97 (7.92%) SC Cleared
3 71 (5.80%) Degree
4 31 (2.53%) DV Cleared
5 25 (2.04%) Computer Science Degree
6 7 (0.57%) Master's Degree
7 4 (0.33%) Sun Certification
8 3 (0.25%) AWS Certification
8 3 (0.25%) BPSS Clearance
8 3 (0.25%) ISEB
8 3 (0.25%) RHCE
9 2 (0.16%) APMP
9 2 (0.16%) ISTQB
10 1 (0.082%) ISTQB Foundation Certification
10 1 (0.082%) MCITP
10 1 (0.082%) MCSE
10 1 (0.082%) Microsoft Certification
10 1 (0.082%) Numerate Degree
Quality Assurance & Compliance
1 92 (7.52%) QA
2 36 (2.94%) Data Quality
3 19 (1.55%) MiFID
4 10 (0.82%) EMIR
5 9 (0.74%) Dodd-Frank
6 5 (0.41%) SLA
7 4 (0.33%) Disclosure Scotland
8 3 (0.25%) HL7
9 1 (0.082%) COBIT
9 1 (0.082%) GCP
9 1 (0.082%) ISO 20022
9 1 (0.082%) ISO 9001
9 1 (0.082%) ISO/IEC 27001
9 1 (0.082%) WCAG
System Software
1 135 (11.03%) Docker
2 42 (3.43%) Active Directory
3 14 (1.14%) Oracle Clusterware
3 14 (1.14%) Oracle RAC
4 10 (0.82%) Firmware
5 7 (0.57%) Apache Flume
6 5 (0.41%) HDFS
7 4 (0.33%) Virtual Machines
8 2 (0.16%) Varnish
9 1 (0.082%) Apache ZooKeeper
9 1 (0.082%) Hyper-V
9 1 (0.082%) KVM
9 1 (0.082%) UAG
9 1 (0.082%) VMware Infrastructure
9 1 (0.082%) VMware Workstation
9 1 (0.082%) XenApp
Systems Management
1 45 (3.68%) Puppet
2 42 (3.43%) Ansible
3 25 (2.04%) Opscode Chef
4 20 (1.63%) Terraform
5 16 (1.31%) Kubernetes
6 14 (1.14%) Data Guard
6 14 (1.14%) Oracle Flashback
6 14 (1.14%) Oracle RMAN
7 13 (1.06%) WSUS
8 9 (0.74%) StatsD
9 8 (0.65%) Grafana
9 8 (0.65%) Nagios
9 8 (0.65%) ZABBIX
10 7 (0.57%) Hadoop YARN
10 7 (0.57%) Kibana
10 7 (0.57%) Rancher
11 6 (0.49%) logstash
12 5 (0.41%) Oozie
13 4 (0.33%) HP Quality Center
14 3 (0.25%) Red Hat Spacewalk
Vendors
1 111 (9.07%) Oracle
2 71 (5.80%) Microsoft
3 51 (4.17%) SAP
4 39 (3.19%) Apigee
5 28 (2.29%) Google
6 27 (2.21%) Splunk
7 24 (1.96%) IBM
7 24 (1.96%) Salesforce.com
8 20 (1.63%) Adobe
9 18 (1.47%) Red Hat
10 17 (1.39%) Atlassian
11 16 (1.31%) Tableau
12 14 (1.14%) Xamarin
13 13 (1.06%) hybris
14 10 (0.82%) Cisco
14 10 (0.82%) MicroStrategy
14 10 (0.82%) Perforce
14 10 (0.82%) Sitecore
15 8 (0.65%) MuleSoft
15 8 (0.65%) TIBCO