Period
to 21 May 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 21 May 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
21 May 2018
Same period 2017 Same period 2016
Rank 109 108 148
Rank change year-on-year -1 +40 -20
Contract jobs citing JSON 1,096 914 756
As % of all contract IT jobs advertised in London 2.40% 2.32% 1.74%
As % of the Libraries, Frameworks & Software Standards category 6.58% 6.59% 5.41%
Number of daily rates quoted 792 646 601
London median daily rate £490 £475 £440
Median daily rate % change year-on-year +3.16% +7.95% +10.00%
10th Percentile £381 £350 £318
90th Percentile £615 £609 £600
England median daily rate £475 £450 £425
% change year-on-year +5.56% +5.88% +11.11%
Number of hourly rates quoted 0 6 4
London median hourly rate - £22.50 £25.12
Median hourly rate % change year-on-year - -10.41% +27.39%
England median hourly rate £45.00 £35.00 £50.00
% change year-on-year +28.57% -30.00% +33.33%

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 16,648 13,861 13,972
As % of all contract IT jobs advertised in London 36.50% 35.25% 32.23%
Number of daily rates quoted 12,737 10,330 10,531
London median daily rate £500 £475 £458
Median daily rate % change year-on-year +5.26% +3.83% +5.17%
10th Percentile £363 £328 £313
90th Percentile £656 £638 £638
England median daily rate £475 £450 £425
% change year-on-year +5.56% +5.88% +6.25%
Number of hourly rates quoted 116 85 67
London median hourly rate £44.21 £45.00 £42.50
Median hourly rate % change year-on-year -1.76% +5.88% +55.28%
10th Percentile £20.98 £19.45 £18.62
90th Percentile £65.00 £57.50 £76.00
England median hourly rate £42.50 £41.00 £38.00
% change year-on-year +3.66% +7.89% +8.57%

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 21 May 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 21 May 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 +6 207 £500 +11.11% 66
South London +24 76 £475 -5.00% 5
West London -29 60 £473 +7.39% 24
East London -10 34 £525 +6.33% 14
North London -2 4 - - 2
JSON
England

For the 6 months to 21 May 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.

1 579 (52.83%) Agile Software Development
2 526 (47.99%) Java
3 462 (42.15%) XML
4 442 (40.33%) REST
5 409 (37.32%) JavaScript
6 377 (34.40%) Git (software)
7 363 (33.12%) TDD
8 351 (32.03%) Web Services
9 265 (24.18%) Scrum
10 259 (23.63%) HTML
11 257 (23.45%) SQL
12 240 (21.90%) CSS
13 227 (20.71%) DevOps
14 226 (20.62%) AngularJS
15 225 (20.53%) Amazon AWS
16 224 (20.44%) Finance
17 220 (20.07%) C#
18 219 (19.98%) SOAP
19 218 (19.89%) Node.js
20 206 (18.80%) .NET
21 197 (17.97%) RESTful
22 187 (17.06%) Continuous Integration
23 185 (16.88%) Jenkins
24 178 (16.24%) Docker
24 178 (16.24%) Microservices
25 175 (15.97%) SQL Server
26 174 (15.88%) JIRA
26 174 (15.88%) React
27 165 (15.05%) Test Automation
28 160 (14.60%) Spring

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 79 (7.21%) Confluence
2 75 (6.84%) Elasticsearch
3 51 (4.65%) Tomcat
4 46 (4.20%) Apache
5 39 (3.56%) Apache Spark
6 31 (2.83%) CMS
7 25 (2.28%) Apache Solr
8 24 (2.19%) WebSphere
9 21 (1.92%) IIS
10 19 (1.73%) JBoss
11 15 (1.37%) WebLogic
12 12 (1.09%) Adobe Experience Manager
13 11 (1.00%) MQSeries
13 11 (1.00%) Oracle SOA Suite
14 9 (0.82%) SharePoint
15 7 (0.64%) Mule
16 6 (0.55%) Apache Pig
17 5 (0.46%) nginx
18 4 (0.36%) Jetty
18 4 (0.36%) Oracle Service Bus
Applications
1 35 (3.19%) Microsoft Excel
2 11 (1.00%) MS Visio
3 7 (0.64%) Microsoft Project
3 7 (0.64%) Spreadsheet
4 6 (0.55%) Microsoft Office
4 6 (0.55%) Photoshop
5 4 (0.36%) Adobe Creative Suite
6 3 (0.27%) Blender
6 3 (0.27%) InVision
6 3 (0.27%) Maya
7 2 (0.18%) Adobe Illustrator
7 2 (0.18%) CATIA
8 1 (0.091%) HipChat
8 1 (0.091%) InfoPath
8 1 (0.091%) Microsoft PowerPoint
Business Applications
1 4 (0.36%) Summit
2 3 (0.27%) Dynamics CRM
2 3 (0.27%) Oracle EBS
3 2 (0.18%) DELMIA
3 2 (0.18%) ENOVIA
3 2 (0.18%) Magento
3 2 (0.18%) Payment Gateway
3 2 (0.18%) Pivotal CRM
3 2 (0.18%) Salesforce.com CRM
3 2 (0.18%) SAP PM
4 1 (0.091%) BusinessWorks
4 1 (0.091%) Distributed Ledger
4 1 (0.091%) Dynamics GP
4 1 (0.091%) Oracle ERP
4 1 (0.091%) Oracle Retail
4 1 (0.091%) R3 Corda
4 1 (0.091%) Social Studio
4 1 (0.091%) WebTrends
Cloud Services
1 225 (20.53%) Amazon AWS
2 147 (13.41%) Microsoft Azure
3 53 (4.84%) Amazon S3
4 50 (4.56%) npm
5 48 (4.38%) PaaS
6 37 (3.38%) Amazon EC2
7 36 (3.28%) GitHub
8 30 (2.74%) Serverless
9 29 (2.65%) Google Cloud Platform
9 29 (2.65%) IaaS
10 23 (2.10%) AWS Lambda
11 22 (2.01%) Virtual Private Cloud
12 17 (1.55%) Amazon ELB
13 16 (1.46%) Route 53
14 14 (1.28%) Algolia
14 14 (1.28%) SaaS
15 13 (1.19%) Amazon CloudWatch
16 12 (1.09%) AWS CloudFormation
16 12 (1.09%) Yarn
17 11 (1.00%) Heroku
Communications & Networking
1 64 (5.84%) HTTP
2 25 (2.28%) DNS
3 24 (2.19%) Firewall
4 23 (2.10%) Internet
5 18 (1.64%) TCP/IP
6 10 (0.91%) Network Security
6 10 (0.91%) SSL
7 9 (0.82%) SMS
8 8 (0.73%) FTP
8 8 (0.73%) WAN
9 7 (0.64%) LAN
10 6 (0.55%) Bluetooth
10 6 (0.55%) MPLS
10 6 (0.55%) SSH
10 6 (0.55%) VPN
11 5 (0.46%) AMQP
11 5 (0.46%) BIG-IP
11 5 (0.46%) HTTPS
12 4 (0.36%) Cisco ASA
12 4 (0.36%) Cisco Nexus
Database & Business Intelligence
1 175 (15.97%) SQL Server
2 131 (11.95%) Relational Database
3 115 (10.49%) PostgreSQL
4 82 (7.48%) NoSQL
5 80 (7.30%) Big Data
6 73 (6.66%) MySQL
7 70 (6.39%) Hadoop
8 51 (4.65%) MongoDB
9 48 (4.38%) HBase
10 46 (4.20%) RDBMS
11 32 (2.92%) Data Warehouse
12 29 (2.65%) SQL Server 2012
13 26 (2.37%) Oracle Database
14 24 (2.19%) Amazon RDS
14 24 (2.19%) SQL Server 2014
15 23 (2.10%) Cosmos DB
16 21 (1.92%) Apache Hive
17 20 (1.82%) SQL Server 2016
18 19 (1.73%) SQL Server Integration Services
19 18 (1.64%) DB2
Development Applications
1 377 (34.40%) Git (software)
2 185 (16.88%) Jenkins
3 174 (15.88%) JIRA
4 92 (8.39%) JUnit
5 84 (7.66%) Subversion
6 81 (7.39%) Cucumber
6 81 (7.39%) Selenium
7 75 (6.84%) Maven
8 69 (6.30%) Visual Studio
9 53 (4.84%) Visual Studio Team System
10 49 (4.47%) Team Foundation Server
11 46 (4.20%) NUnit
12 38 (3.47%) Mockito
13 37 (3.38%) Gradle
14 36 (3.28%) Eclipse
15 32 (2.92%) gulp
15 32 (2.92%) Hudson
16 27 (2.46%) Ant
16 27 (2.46%) Mercurial
17 26 (2.37%) webpack
General
1 224 (20.44%) Finance
2 103 (9.40%) Banking
3 28 (2.55%) Legal
4 27 (2.46%) Retail
5 20 (1.82%) Games
6 19 (1.73%) Front Office
6 19 (1.73%) Telecoms
7 17 (1.55%) Investment Banking
8 13 (1.19%) Marketing
9 11 (1.00%) Back Office
10 10 (0.91%) Financial Institution
10 10 (0.91%) Law
11 9 (0.82%) Manufacturing
12 7 (0.64%) Advertising
12 7 (0.64%) Publishing
13 5 (0.46%) Billing
13 5 (0.46%) Electronics
13 5 (0.46%) Retail Banking
14 4 (0.36%) Spanish Language
15 3 (0.27%) Polish Language
Job Titles
1 738 (67.34%) Developer
2 206 (18.80%) Java Developer
3 117 (10.68%) Senior Developer
4 106 (9.67%) Architect
5 80 (7.30%) .NET Developer
6 67 (6.11%) JavaScript Developer
6 67 (6.11%) React Developer
7 66 (6.02%) C# Developer
8 59 (5.38%) Agile Developer
8 59 (5.38%) DevOps Engineer
9 58 (5.29%) Full Stack Developer
9 58 (5.29%) Node.js Developer
10 57 (5.20%) Front End Developer (Client-Side Developer)
11 48 (4.38%) Android Developer
12 47 (4.29%) C# .NET Developer
13 45 (4.11%) Senior Java Developer
14 40 (3.65%) Applications Developer
15 36 (3.28%) Azure DevOps
16 34 (3.10%) SQL Developer
17 33 (3.01%) Azure Engineer
Libraries, Frameworks & Software Standards
1 462 (42.15%) XML
2 442 (40.33%) REST
3 351 (32.03%) Web Services
4 259 (23.63%) HTML
5 240 (21.90%) CSS
6 226 (20.62%) AngularJS
7 219 (19.98%) SOAP
8 218 (19.89%) Node.js
9 206 (18.80%) .NET
10 197 (17.97%) RESTful
11 174 (15.88%) React
12 160 (14.60%) Spring
13 157 (14.32%) HTML5
14 132 (12.04%) jQuery
15 120 (10.95%) CSS3
16 94 (8.58%) JMS
17 83 (7.57%) Hibernate
18 79 (7.21%) Kafka
19 73 (6.66%) J2EE
20 69 (6.30%) RabbitMQ
Miscellaneous
1 118 (10.77%) User Experience
2 113 (10.31%) Mobile App
3 81 (7.39%) Greenfield Project
4 32 (2.92%) Computer Science
5 31 (2.83%) Analytical Skills
6 21 (1.92%) Algorithms
6 21 (1.92%) Self-Motivation
7 20 (1.82%) Data Structures
8 18 (1.64%) Derivative
9 17 (1.55%) Fintech
10 16 (1.46%) Enterprise Software
10 16 (1.46%) Video on Demand
11 15 (1.37%) Clustering
11 15 (1.37%) Data Centre
11 15 (1.37%) Video\Live Streaming
12 11 (1.00%) Virtual Team
13 10 (0.91%) Animation
13 10 (0.91%) Client/Server
13 10 (0.91%) Over-the-Top Content
14 8 (0.73%) DataPower
Operating Systems
1 142 (12.96%) Linux
2 91 (8.30%) Android
3 85 (7.76%) Windows
4 74 (6.75%) Unix
5 67 (6.11%) Apple iOS
6 33 (3.01%) Windows Server
7 15 (1.37%) Windows Server 2012
8 10 (0.91%) HPUX
8 10 (0.91%) Red Hat Enterprise Linux
8 10 (0.91%) Solaris
9 9 (0.82%) Mac OS X
10 7 (0.64%) Debian
11 5 (0.46%) CentOS
12 3 (0.27%) CoreOS
12 3 (0.27%) Ubuntu
13 2 (0.18%) Windows Server 2008
14 1 (0.091%) AIX
14 1 (0.091%) SUSE
14 1 (0.091%) SUSE Linux Enterprise Server
14 1 (0.091%) Windows 10
Processes & Methodologies
1 579 (52.83%) Agile Software Development
2 363 (33.12%) TDD
3 265 (24.18%) Scrum
4 227 (20.71%) DevOps
5 187 (17.06%) Continuous Integration
6 178 (16.24%) Microservices
7 165 (15.05%) Test Automation
8 155 (14.14%) OO
9 137 (12.50%) MVC
10 133 (12.14%) BDD
11 96 (8.76%) SOA
12 95 (8.67%) Front End Development
13 88 (8.03%) Pair Programming
14 76 (6.93%) Problem-Solving
15 73 (6.66%) Digital Transformation Programme
16 70 (6.39%) OOP
17 67 (6.11%) Web Development
18 66 (6.02%) Software Engineering
19 65 (5.93%) Unit Testing
20 64 (5.84%) Migration
Programming Languages
1 526 (47.99%) Java
2 409 (37.32%) JavaScript
3 257 (23.45%) SQL
4 220 (20.07%) C#
5 127 (11.59%) Java 8
6 117 (10.68%) Python
7 85 (7.76%) Scala
8 70 (6.39%) PowerShell
9 66 (6.02%) Ruby
10 55 (5.02%) ES6
11 48 (4.38%) Groovy
12 36 (3.28%) Shell Script
13 35 (3.19%) TypeScript
14 33 (3.01%) Bash Shell
15 27 (2.46%) C++
15 27 (2.46%) XPath
16 24 (2.19%) Perl
17 23 (2.10%) PL/SQL
18 20 (1.82%) PHP
19 19 (1.73%) R
Qualifications
1 108 (9.85%) Security Cleared
2 93 (8.49%) SC Cleared
3 64 (5.84%) Degree
4 18 (1.64%) BPSS Clearance
5 16 (1.46%) DV Cleared
6 9 (0.82%) Computer Science Degree
7 5 (0.46%) AWS Certification
7 5 (0.46%) Master's Degree
8 4 (0.36%) ISEB
8 4 (0.36%) TOGAF Certification
9 3 (0.27%) CCIE
9 3 (0.27%) Cisco Certification
10 2 (0.18%) A+ Certification
10 2 (0.18%) CCNP
10 2 (0.18%) CTC Cleared
10 2 (0.18%) PMI Certification
10 2 (0.18%) PMP
11 1 (0.091%) Oracle Certification
11 1 (0.091%) RHCE
11 1 (0.091%) Sun Certification
Quality Assurance & Compliance
1 45 (4.11%) QA
2 24 (2.19%) MiFID
3 15 (1.37%) Data Quality
3 15 (1.37%) Dodd-Frank
3 15 (1.37%) EMIR
4 14 (1.28%) GCP
5 10 (0.91%) Disclosure Scotland
6 6 (0.55%) ISO 20022
6 6 (0.55%) PMO
7 5 (0.46%) GDPR
7 5 (0.46%) PSD2
8 3 (0.27%) HL7
9 1 (0.091%) PCI DSS
9 1 (0.091%) Sarbanes-Oxley
System Software
1 178 (16.24%) Docker
2 58 (5.29%) Active Directory
3 16 (1.46%) HDFS
4 8 (0.73%) Apache ZooKeeper
5 3 (0.27%) Apache Flume
5 3 (0.27%) Virtual Machines
6 2 (0.18%) Microsoft App-V
6 2 (0.18%) VMware Infrastructure
6 2 (0.18%) XenApp
7 1 (0.091%) KVM
7 1 (0.091%) Oracle RAC
7 1 (0.091%) vSphere
7 1 (0.091%) XenDesktop
Systems Management
1 35 (3.19%) Puppet
2 34 (3.10%) Terraform
3 33 (3.01%) Ansible
4 22 (2.01%) Kubernetes
5 19 (1.73%) Opscode Chef
6 10 (0.91%) Grafana
7 8 (0.73%) Oozie
8 7 (0.64%) BladeLogic
9 6 (0.55%) WSUS
10 5 (0.46%) Control-M
10 5 (0.46%) ITRS Geneos
10 5 (0.46%) Prometheus
10 5 (0.46%) Rancher
10 5 (0.46%) StatsD
11 4 (0.36%) Single Sign-On
12 3 (0.27%) HP Quality Center
12 3 (0.27%) Kibana
12 3 (0.27%) Salt
12 3 (0.27%) Suricata
12 3 (0.27%) ZABBIX
Vendors
1 92 (8.39%) Oracle
2 90 (8.21%) Microsoft
3 58 (5.29%) Google
4 34 (3.10%) IBM
5 31 (2.83%) Salesforce.com
6 25 (2.28%) Tableau
7 22 (2.01%) Cloudera
7 22 (2.01%) Splunk
8 19 (1.73%) Hortonworks
9 18 (1.64%) Apigee
9 18 (1.64%) SAP
10 17 (1.55%) Adobe
11 15 (1.37%) MuleSoft
12 13 (1.19%) Informatica
12 13 (1.19%) Perforce
13 12 (1.09%) Red Hat
14 11 (1.00%) Cisco
14 11 (1.00%) Kony
14 11 (1.00%) Talend
15 8 (0.73%) Atlassian