Period
to 20 February 2018

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 20 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
England > London
6 months to
20 Feb 2018
Same period 2017 Same period 2016
Rank 107 95 141
Rank change year-on-year -12 +46 +4
Contract jobs citing JSON 1,113 1,126 776
As % of all contract IT jobs advertised in London 2.37% 2.74% 1.76%
As % of the Libraries, Frameworks & Software Standards category 6.61% 7.72% 5.42%
Number of daily rates quoted 835 838 603
London median daily rate £475 £469 £438
Median daily rate % change year-on-year +1.28% +7.20% +9.38%
10th Percentile £375 £324 £313
90th Percentile £635 £600 £575
England median daily rate £470 £440 £413
% change year-on-year +6.82% +6.67% +3.13%
Number of hourly rates quoted 0 5 5
London median hourly rate - £33.28 £24.23
Median hourly rate % change year-on-year - +37.35% -
England median hourly rate £62.50 £35.50 £43.25
% change year-on-year +76.06% -17.92% +15.33%

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 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 16,837 14,580 14,324
As % of all contract IT jobs advertised in London 35.88% 35.54% 32.48%
Number of daily rates quoted 13,068 10,943 10,759
London median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.56% +5.88%
10th Percentile £356 £325 £310
90th Percentile £650 £638 £625
England median daily rate £475 £433 £425
% change year-on-year +9.70% +1.88% +6.25%
Number of hourly rates quoted 111 75 87
London median hourly rate £33.54 £45.00 £35.00
Median hourly rate % change year-on-year -25.47% +28.57% -2.78%
10th Percentile £20.00 £20.60 £15.65
90th Percentile £48.75 £80.45 £58.00
England median hourly rate £40.00 £40.00 £38.50
% change year-on-year - +3.90% +10.00%

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 20 February 2018.

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 20 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
Central London -26 220 £450 -10.00% 51
West London -24 77 £450 +5.88% 24
South London - 36 £475 - 3
East London -26 11 £600 +21.52% 6
North London +1 6 £400 +10.34% 2
JSON
England

For the 6 months to 20 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 London region with a requirement for JSON.

1 626 (56.24%) Agile Software Development
2 574 (51.57%) Java
3 483 (43.40%) XML
4 407 (36.57%) JavaScript
5 389 (34.95%) REST
6 349 (31.36%) Web Services
7 345 (31.00%) TDD
8 335 (30.10%) Git (software)
9 285 (25.61%) HTML
10 274 (24.62%) SQL
11 262 (23.54%) Scrum
12 252 (22.64%) CSS
13 242 (21.74%) RESTful
14 229 (20.58%) SOAP
15 219 (19.68%) Amazon AWS
16 218 (19.59%) Finance
17 198 (17.79%) AngularJS
18 195 (17.52%) Jenkins
19 193 (17.34%) DevOps
20 192 (17.25%) Spring
21 191 (17.16%) SQL Server
22 190 (17.07%) C#
23 188 (16.89%) Node.js
24 187 (16.80%) Linux
25 186 (16.71%) .NET
26 180 (16.17%) Test Automation
27 172 (15.45%) HTML5
28 162 (14.56%) React
29 159 (14.29%) OO
30 157 (14.11%) Docker

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 56 (5.03%) Confluence
2 50 (4.49%) Apache
3 45 (4.04%) Elasticsearch
4 42 (3.77%) Tomcat
5 31 (2.79%) JBoss
6 29 (2.61%) Apache Solr
7 24 (2.16%) CMS
8 21 (1.89%) Apache Spark
9 19 (1.71%) WebSphere
10 13 (1.17%) MQSeries
10 13 (1.17%) Mule
11 11 (0.99%) SharePoint
12 9 (0.81%) Cloud Foundry
12 9 (0.81%) WildFly
13 8 (0.72%) Adobe Experience Manager
13 8 (0.72%) SAS
14 7 (0.63%) IIS
14 7 (0.63%) nginx
15 6 (0.54%) Apache Pig
16 5 (0.45%) OpenStack
Applications
1 21 (1.89%) Microsoft Excel
2 6 (0.54%) HipChat
2 6 (0.54%) Spreadsheet
3 5 (0.45%) MS Visio
4 4 (0.36%) Photoshop
5 2 (0.18%) InfoPath
5 2 (0.18%) Microsoft Office
6 1 (0.090%) Adobe Illustrator
6 1 (0.090%) Gephi
6 1 (0.090%) InVision
6 1 (0.090%) Microsoft Project
Business Applications
1 11 (0.99%) Payment Gateway
2 3 (0.27%) Dynamics CRM
2 3 (0.27%) Social Studio
2 3 (0.27%) Summit
2 3 (0.27%) WebTrends
3 2 (0.18%) Magento
3 2 (0.18%) Oracle EBS
3 2 (0.18%) Salesforce.com CRM
3 2 (0.18%) SAP BPC
4 1 (0.090%) Distributed Ledger
4 1 (0.090%) Oracle Retail
4 1 (0.090%) Pivotal CRM
4 1 (0.090%) Remedy ITSM
4 1 (0.090%) SAP CRM
4 1 (0.090%) SAP PM
4 1 (0.090%) Shopify
Cloud Services
1 219 (19.68%) Amazon AWS
2 71 (6.38%) Microsoft Azure
3 52 (4.67%) GitHub
4 49 (4.40%) npm
5 45 (4.04%) Amazon EC2
6 40 (3.59%) Amazon S3
7 33 (2.96%) Virtual Private Cloud
8 32 (2.88%) Serverless
9 30 (2.70%) Amazon ELB
10 26 (2.34%) AWS Lambda
11 25 (2.25%) PaaS
12 24 (2.16%) Google Cloud Platform
13 23 (2.07%) SaaS
14 22 (1.98%) Route 53
15 16 (1.44%) Cloud Computing
16 14 (1.26%) AWS CloudFormation
16 14 (1.26%) IaaS
17 11 (0.99%) Algolia
17 11 (0.99%) Yarn
18 10 (0.90%) Amazon Kinesis
Communications & Networking
1 52 (4.67%) HTTP
2 43 (3.86%) DNS
2 43 (3.86%) Internet
3 34 (3.05%) Firewall
4 29 (2.61%) TCP/IP
5 15 (1.35%) Bluetooth
6 11 (0.99%) Network Security
6 11 (0.99%) Wi-Fi
7 10 (0.90%) MPLS
7 10 (0.90%) SMS
7 10 (0.90%) VPN
8 9 (0.81%) FTP
8 9 (0.81%) LAN
8 9 (0.81%) SSH
8 9 (0.81%) SSL
8 9 (0.81%) WAN
9 7 (0.63%) DHCP
9 7 (0.63%) VLAN
10 5 (0.45%) HTTPS
11 4 (0.36%) Kerberos
Database & Business Intelligence
1 191 (17.16%) SQL Server
2 143 (12.85%) Relational Database
3 119 (10.69%) PostgreSQL
4 99 (8.89%) NoSQL
5 90 (8.09%) MySQL
6 78 (7.01%) Big Data
7 67 (6.02%) MongoDB
7 67 (6.02%) RDBMS
8 46 (4.13%) Hadoop
9 38 (3.41%) Redis
10 33 (2.96%) HBase
11 26 (2.34%) Amazon RDS
11 26 (2.34%) Oracle Database
12 22 (1.98%) SQL Server 2014
13 19 (1.71%) Apache Cassandra
14 18 (1.62%) Power BI
14 18 (1.62%) SQL Server Integration Services
15 17 (1.53%) Data Warehouse
15 17 (1.53%) SQL Server 2012
16 15 (1.35%) DB2
Development Applications
1 335 (30.10%) Git (software)
2 195 (17.52%) Jenkins
3 150 (13.48%) JIRA
4 105 (9.43%) Cucumber
5 96 (8.63%) JUnit
6 77 (6.92%) Maven
7 68 (6.11%) Selenium
8 58 (5.21%) Subversion
9 46 (4.13%) Visual Studio
10 43 (3.86%) Eclipse
11 41 (3.68%) TeamCity
12 37 (3.32%) Mockito
13 36 (3.23%) Gradle
14 35 (3.14%) Protractor
15 34 (3.05%) NUnit
16 33 (2.96%) webpack
17 31 (2.79%) gulp
17 31 (2.79%) Team Foundation Server
18 29 (2.61%) Android Studio
19 26 (2.34%) Appium
General
1 218 (19.59%) Finance
2 102 (9.16%) Banking
3 33 (2.96%) Games
4 32 (2.88%) Retail
5 30 (2.70%) Legal
6 26 (2.34%) Marketing
7 19 (1.71%) Telecoms
8 14 (1.26%) Investment Banking
8 14 (1.26%) Manufacturing
9 13 (1.17%) Law
10 12 (1.08%) Billing
11 11 (0.99%) Back Office
12 10 (0.90%) Front Office
13 6 (0.54%) Advertising
13 6 (0.54%) Electronics
13 6 (0.54%) Music Industry
13 6 (0.54%) Publishing
13 6 (0.54%) Retail Banking
14 4 (0.36%) Financial Institution
15 3 (0.27%) Retail Finance
Job Titles
1 749 (67.30%) Developer
2 246 (22.10%) Java Developer
3 116 (10.42%) Senior Developer
4 98 (8.81%) Architect
5 82 (7.37%) Full Stack Developer
6 70 (6.29%) DevOps Engineer
7 69 (6.20%) React Developer
8 67 (6.02%) JavaScript Developer
9 55 (4.94%) .NET Developer
9 55 (4.94%) Front End Developer (Client-Side Developer)
10 53 (4.76%) C# Developer
11 51 (4.58%) Android Developer
12 46 (4.13%) Node.js Developer
13 45 (4.04%) Agile Developer
13 45 (4.04%) SQL Developer
14 39 (3.50%) Angular Developer
15 38 (3.41%) Solutions Architect
16 37 (3.32%) Tester
17 35 (3.14%) Senior Java Developer
18 33 (2.96%) Developer in Test
Libraries, Frameworks & Software Standards
1 483 (43.40%) XML
2 389 (34.95%) REST
3 349 (31.36%) Web Services
4 285 (25.61%) HTML
5 252 (22.64%) CSS
6 242 (21.74%) RESTful
7 229 (20.58%) SOAP
8 198 (17.79%) AngularJS
9 192 (17.25%) Spring
10 188 (16.89%) Node.js
11 186 (16.71%) .NET
12 172 (15.45%) HTML5
13 162 (14.56%) React
14 137 (12.31%) jQuery
15 105 (9.43%) CSS3
16 77 (6.92%) Kafka
17 74 (6.65%) RabbitMQ
18 71 (6.38%) Hibernate
18 71 (6.38%) JMS
19 61 (5.48%) J2EE
Miscellaneous
1 100 (8.98%) Mobile App
2 89 (8.00%) User Experience
3 67 (6.02%) Greenfield Project
4 52 (4.67%) Data Structures
5 39 (3.50%) Analytical Skills
6 30 (2.70%) Video on Demand
7 25 (2.25%) Algorithms
8 23 (2.07%) Video\Live Streaming
9 21 (1.89%) Computer Science
10 16 (1.44%) Enterprise Software
10 16 (1.44%) Online Games
11 15 (1.35%) Derivative
12 14 (1.26%) Data Centre
12 14 (1.26%) Foreign Exchange (FX)
13 11 (0.99%) Linux Command Line
14 10 (0.90%) Smart Home
15 9 (0.81%) Clustering
15 9 (0.81%) Management Information System
16 8 (0.72%) Cloud Native
16 8 (0.72%) DataPower
Operating Systems
1 187 (16.80%) Linux
2 104 (9.34%) Unix
3 103 (9.25%) Android
4 84 (7.55%) Windows
5 58 (5.21%) Apple iOS
6 35 (3.14%) Windows Server
7 22 (1.98%) Windows Server 2012
8 19 (1.71%) Red Hat Enterprise Linux
9 16 (1.44%) Mac OS X
10 12 (1.08%) HPUX
10 12 (1.08%) Solaris
11 5 (0.45%) CentOS
12 2 (0.18%) Fedora
12 2 (0.18%) Windows Server 2008
13 1 (0.090%) Debian
13 1 (0.090%) Windows 10
Processes & Methodologies
1 626 (56.24%) Agile Software Development
2 345 (31.00%) TDD
3 262 (23.54%) Scrum
4 193 (17.34%) DevOps
5 180 (16.17%) Test Automation
6 159 (14.29%) OO
7 148 (13.30%) BDD
8 143 (12.85%) Continuous Integration
9 137 (12.31%) MVC
10 121 (10.87%) Microservices
11 105 (9.43%) Web Development
12 103 (9.25%) Front End Development
13 97 (8.72%) Kanban
14 80 (7.19%) SOA
15 75 (6.74%) Migration
16 71 (6.38%) E-Commerce
16 71 (6.38%) Mentoring
16 71 (6.38%) Pair Programming
17 70 (6.29%) Analytics
17 70 (6.29%) Open Source
Programming Languages
1 574 (51.57%) Java
2 407 (36.57%) JavaScript
3 274 (24.62%) SQL
4 190 (17.07%) C#
5 124 (11.14%) Python
6 81 (7.28%) Ruby
7 75 (6.74%) Scala
8 66 (5.93%) ES6
9 46 (4.13%) Groovy
9 46 (4.13%) Shell Script
10 43 (3.86%) TypeScript
11 38 (3.41%) Bash Shell
11 38 (3.41%) PL/SQL
11 38 (3.41%) PowerShell
12 37 (3.32%) PHP
13 34 (3.05%) R
14 33 (2.96%) Apple Swift
15 32 (2.88%) Perl
15 32 (2.88%) T-SQL
16 23 (2.07%) C++
Qualifications
1 131 (11.77%) Security Cleared
2 99 (8.89%) SC Cleared
3 59 (5.30%) Degree
4 18 (1.62%) DV Cleared
5 14 (1.26%) Computer Science Degree
6 7 (0.63%) Master's Degree
7 6 (0.54%) AWS Certification
8 4 (0.36%) RHCE
9 3 (0.27%) BPSS Clearance
9 3 (0.27%) Sun Certification
10 2 (0.18%) CTC Cleared
11 1 (0.090%) APMP
11 1 (0.090%) ISEB
11 1 (0.090%) ISTQB
11 1 (0.090%) Numerate Degree
11 1 (0.090%) Oracle Certification
Quality Assurance & Compliance
1 63 (5.66%) QA
2 31 (2.79%) MiFID
3 28 (2.52%) Data Quality
4 13 (1.17%) EMIR
5 12 (1.08%) Dodd-Frank
6 11 (0.99%) Disclosure Scotland
6 11 (0.99%) GCP
7 5 (0.45%) SLA
8 4 (0.36%) HL7
8 4 (0.36%) ISO 20022
9 1 (0.090%) PCI DSS
9 1 (0.090%) PMO
9 1 (0.090%) Sarbanes-Oxley
9 1 (0.090%) WCAG
System Software
1 157 (14.11%) Docker
2 52 (4.67%) Active Directory
3 14 (1.26%) Oracle Clusterware
3 14 (1.26%) Oracle RAC
4 10 (0.90%) Firmware
5 9 (0.81%) Apache Flume
6 8 (0.72%) HDFS
7 5 (0.45%) Virtual Machines
8 2 (0.18%) Apache ZooKeeper
9 1 (0.090%) Hyper-V
9 1 (0.090%) KVM
9 1 (0.090%) VMware Infrastructure
9 1 (0.090%) VMware Workstation
9 1 (0.090%) XenApp
Systems Management
1 55 (4.94%) Puppet
2 45 (4.04%) Ansible
3 33 (2.96%) Opscode Chef
4 27 (2.43%) Terraform
5 19 (1.71%) WSUS
6 16 (1.44%) Kubernetes
7 14 (1.26%) Data Guard
7 14 (1.26%) Oracle Flashback
7 14 (1.26%) Oracle RMAN
8 12 (1.08%) Grafana
8 12 (1.08%) StatsD
9 10 (0.90%) Nagios
10 9 (0.81%) ZABBIX
11 7 (0.63%) BladeLogic
12 6 (0.54%) Kibana
12 6 (0.54%) logstash
12 6 (0.54%) Single Sign-On
12 6 (0.54%) Suricata
13 5 (0.45%) HP Quality Center
13 5 (0.45%) Red Hat Spacewalk
Vendors
1 113 (10.15%) Oracle
2 89 (8.00%) Microsoft
3 43 (3.86%) Google
4 39 (3.50%) Apigee
5 37 (3.32%) Splunk
6 28 (2.52%) IBM
7 24 (2.16%) Salesforce.com
8 20 (1.80%) Red Hat
9 18 (1.62%) Adobe
10 15 (1.35%) MuleSoft
11 13 (1.17%) hybris
12 12 (1.08%) Cisco
12 12 (1.08%) Perforce
12 12 (1.08%) SAP
13 11 (0.99%) Kony
13 11 (0.99%) Xamarin
14 10 (0.90%) Informatica
15 8 (0.72%) Atlassian
15 8 (0.72%) Hortonworks
15 8 (0.72%) Talend