Period
to 22 November 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 22 November 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
22 Nov 2018
Same period 2017 Same period 2016
Rank 118 102 98
Rank change year-on-year -16 -4 +33
Contract jobs citing JSON 1,105 1,225 1,183
As % of all contract IT jobs advertised in London 2.38% 2.60% 2.62%
As % of the Libraries, Frameworks & Software Standards category 6.07% 6.98% 7.54%
Number of daily rates quoted 827 918 913
London median daily rate £500 £475 £463
Median daily rate % change year-on-year +5.26% +2.70% +5.11%
10th Percentile £392 £358 £325
90th Percentile £675 £638 £588
England median daily rate £475 £460 £430
% change year-on-year +3.26% +6.98% +7.50%
Number of hourly rates quoted 1 1 4
London median hourly rate £35.00 £42.50 £32.64
Median hourly rate % change year-on-year -17.65% +30.21% -45.60%
England median hourly rate £35.00 £45.00 £36.50
% change year-on-year -22.22% +23.29% +0.69%

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 18,193 17,543 15,697
As % of all contract IT jobs advertised in London 39.19% 37.22% 34.70%
Number of daily rates quoted 13,729 13,390 11,712
London median daily rate £525 £500 £465
Median daily rate % change year-on-year +5.00% +7.53% +3.33%
10th Percentile £375 £350 £319
90th Percentile £675 £650 £625
England median daily rate £475 £463 £425
% change year-on-year +2.70% +8.82% +3.03%
Number of hourly rates quoted 83 106 73
London median hourly rate £40.00 £31.38 £40.00
Median hourly rate % change year-on-year +27.49% -21.56% +17.65%
10th Percentile £19.25 £19.22 £19.23
90th Percentile £63.59 £50.00 £57.38
England median hourly rate £41.50 £40.00 £37.50
% change year-on-year +3.75% +6.67% -

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 22 November 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 22 November 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 -9 239 £500 +11.11% 48
South London +19 56 £500 +5.26% 5
East London -2 41 £563 +5.88% 14
West London -19 35 £438 +1.74% 43
North London +7 11 £450 +16.13% 12
JSON
England

For the 6 months to 22 November 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.

1 558 (50.50%) Agile Software Development
2 444 (40.18%) REST
3 431 (39.00%) Java
4 418 (37.83%) JavaScript
5 376 (34.03%) XML
6 363 (32.85%) Git (software)
7 345 (31.22%) TDD
8 301 (27.24%) HTML
9 268 (24.25%) SQL
10 266 (24.07%) Web Services
11 264 (23.89%) Jenkins
12 263 (23.80%) CSS
13 262 (23.71%) Scrum
14 261 (23.62%) Finance
15 214 (19.37%) JIRA
15 214 (19.37%) Continuous Integration
16 201 (18.19%) DevOps
16 201 (18.19%) Node.js
17 188 (17.01%) AngularJS
18 186 (16.83%) Microservices
19 184 (16.65%) BDD
20 179 (16.20%) Microsoft Azure
20 179 (16.20%) Amazon AWS
21 171 (15.48%) Docker
22 170 (15.38%) Test Automation
23 166 (15.02%) SOAP
24 160 (14.48%) SQL Server
25 154 (13.94%) RESTful
26 150 (13.57%) React
27 149 (13.48%) Linux

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
1 124 (11.22%) Confluence
2 68 (6.15%) Elasticsearch
3 39 (3.53%) IIS
3 39 (3.53%) Tomcat
4 36 (3.26%) Apache
4 36 (3.26%) Apache Spark
5 32 (2.90%) CMS
6 20 (1.81%) Apache Solr
6 20 (1.81%) OpenStack
6 20 (1.81%) Oracle SOA Suite
7 19 (1.72%) WebSphere
8 18 (1.63%) JBoss
9 17 (1.54%) WebLogic
10 13 (1.18%) Mule
11 11 (1.00%) SharePoint
12 9 (0.81%) nginx
13 8 (0.72%) Adobe Experience Manager
13 8 (0.72%) Apache ServiceMix
13 8 (0.72%) CoreMedia CMS
14 6 (0.54%) BizTalk Server
Applications
1 28 (2.53%) Microsoft Excel
2 10 (0.90%) Photoshop
3 4 (0.36%) Microsoft Office
4 3 (0.27%) Adobe Illustrator
5 2 (0.18%) Adobe Creative Suite
5 2 (0.18%) Chatbot
6 1 (0.090%) Blender
6 1 (0.090%) InfoPath
6 1 (0.090%) Maya
6 1 (0.090%) Mingle
6 1 (0.090%) SketchUp
6 1 (0.090%) S-PLUS
Business Applications
1 6 (0.54%) Salesforce.com CRM
2 5 (0.45%) Dynamics CRM
3 4 (0.36%) Fredhopper
3 4 (0.36%) Remedy ITSM
4 3 (0.27%) Oracle EBS
5 2 (0.18%) Magento
5 2 (0.18%) Oracle Applications
5 2 (0.18%) Oracle EBS R12
5 2 (0.18%) Oracle Financials
5 2 (0.18%) R3 Corda
6 1 (0.090%) NetSuite
6 1 (0.090%) Oracle 11i
6 1 (0.090%) Oracle iProcurement
6 1 (0.090%) Payment Gateway
6 1 (0.090%) ResourceLink
6 1 (0.090%) SAP Hybris
6 1 (0.090%) ScheduALL
6 1 (0.090%) Summit
6 1 (0.090%) TIBCO BusinessEvents
6 1 (0.090%) Workday HCM
Cloud Services
1 179 (16.20%) Amazon AWS
1 179 (16.20%) Microsoft Azure
2 69 (6.24%) PaaS
3 60 (5.43%) GitHub
4 57 (5.16%) IaaS
5 48 (4.34%) npm
6 45 (4.07%) Amazon S3
7 32 (2.90%) Serverless
8 28 (2.53%) Google Cloud Platform
9 23 (2.08%) OpenShift
10 22 (1.99%) Apigee
11 21 (1.90%) Amazon SQS
11 21 (1.90%) Azure Active Directory
12 20 (1.81%) AWS Lambda
13 17 (1.54%) BrowserStack
14 16 (1.45%) Amazon EC2
15 14 (1.27%) SaaS
16 12 (1.09%) AWS CloudFormation
17 11 (1.00%) Azure Data Factory
17 11 (1.00%) Office 365
Communications & Networking
1 99 (8.96%) HTTP
2 27 (2.44%) VPN
3 19 (1.72%) HTTPS
4 18 (1.63%) SSL
5 17 (1.54%) Firewall
6 14 (1.27%) Internet
7 13 (1.18%) DNS
7 13 (1.18%) X.509
8 12 (1.09%) Network Security
9 11 (1.00%) Cisco ASA
9 11 (1.00%) IPsec
10 9 (0.81%) AMQP
10 9 (0.81%) FTP
11 7 (0.63%) MQTT
11 7 (0.63%) TCP/IP
12 6 (0.54%) Reverse Proxy
13 5 (0.45%) Kerberos
13 5 (0.45%) SAN
14 3 (0.27%) LAN
14 3 (0.27%) Remote Desktop
Database & Business Intelligence
1 160 (14.48%) SQL Server
2 122 (11.04%) Relational Database
3 114 (10.32%) PostgreSQL
4 85 (7.69%) MongoDB
5 78 (7.06%) NoSQL
6 75 (6.79%) MySQL
7 73 (6.61%) Hadoop
8 54 (4.89%) Big Data
9 47 (4.25%) RDBMS
10 45 (4.07%) HBase
11 40 (3.62%) Data Warehouse
12 28 (2.53%) Oracle Database
13 24 (2.17%) Power BI
14 22 (1.99%) SQL Server 2016
14 22 (1.99%) SQL Server Integration Services
15 21 (1.90%) Azure SQL Database
15 21 (1.90%) SQL Server 2012
16 20 (1.81%) Amazon Redshift
16 20 (1.81%) Data Lake
17 18 (1.63%) PowerPivot
Development Applications
1 363 (32.85%) Git (software)
2 264 (23.89%) Jenkins
3 214 (19.37%) JIRA
4 96 (8.69%) Selenium
5 82 (7.42%) Subversion
6 80 (7.24%) Cucumber
7 67 (6.06%) JUnit
7 67 (6.06%) Maven
8 43 (3.89%) TeamCity
9 42 (3.80%) Visual Studio Team System
10 37 (3.35%) Visual Studio
11 36 (3.26%) WebDriver
12 34 (3.08%) webpack
13 29 (2.62%) gulp
13 29 (2.62%) Team Foundation Server
14 28 (2.53%) Bitbucket
14 28 (2.53%) Hudson
15 27 (2.44%) Mercurial
15 27 (2.44%) SoapUI
16 26 (2.35%) JMeter
General
1 261 (23.62%) Finance
2 124 (11.22%) Banking
3 51 (4.62%) Front Office
4 39 (3.53%) Retail
5 32 (2.90%) Investment Banking
6 25 (2.26%) Games
7 20 (1.81%) Advertising
8 19 (1.72%) Financial Institution
9 14 (1.27%) Back Office
10 12 (1.09%) Legal
11 11 (1.00%) Telecoms
12 10 (0.90%) Marketing
13 8 (0.72%) Online Betting
14 5 (0.45%) French Language
15 4 (0.36%) Automotive
15 4 (0.36%) Billing
16 3 (0.27%) Manufacturing
16 3 (0.27%) Pharmaceutical
16 3 (0.27%) Publishing
17 2 (0.18%) Law
Job Titles
1 677 (61.27%) Developer
2 201 (18.19%) Java Developer
3 111 (10.05%) Senior Developer
4 104 (9.41%) Architect
5 79 (7.15%) React Developer
6 61 (5.52%) Front End Developer (Client-Side Developer)
7 58 (5.25%) .NET Developer
8 54 (4.89%) Full Stack Developer
9 52 (4.71%) JavaScript Developer
10 51 (4.62%) C# Developer
11 50 (4.52%) DevOps Engineer
12 44 (3.98%) Node.js Developer
13 41 (3.71%) Senior Java Developer
14 37 (3.35%) Data Modeller
15 35 (3.17%) Angular Developer
16 34 (3.08%) Consultant
17 32 (2.90%) Agile Developer
17 32 (2.90%) Android Developer
18 31 (2.81%) Azure DevOps
18 31 (2.81%) Tester
Libraries, Frameworks & Software Standards
1 444 (40.18%) REST
2 376 (34.03%) XML
3 301 (27.24%) HTML
4 266 (24.07%) Web Services
5 263 (23.80%) CSS
6 201 (18.19%) Node.js
7 188 (17.01%) AngularJS
8 166 (15.02%) SOAP
9 154 (13.94%) RESTful
10 150 (13.57%) React
11 147 (13.30%) .NET
12 139 (12.58%) Spring
13 138 (12.49%) HTML5
14 126 (11.40%) jQuery
15 92 (8.33%) JSON Schema
16 85 (7.69%) Hibernate
16 85 (7.69%) Sass
17 84 (7.60%) CSS3
18 82 (7.42%) Kafka
19 80 (7.24%) Spring Boot
Miscellaneous
1 70 (6.33%) Mobile App
2 69 (6.24%) User Experience
3 61 (5.52%) Greenfield Project
4 46 (4.16%) Fintech
5 43 (3.89%) Analytical Skills
6 37 (3.35%) Self-Motivation
7 32 (2.90%) Enterprise Software
8 28 (2.53%) Data Structures
9 24 (2.17%) PKI
10 20 (1.81%) Fixed Income
11 19 (1.72%) Computer Science
12 17 (1.54%) Algorithms
12 17 (1.54%) Virtual Team
13 14 (1.27%) Enterprise Cloud
13 14 (1.27%) Online Games
14 13 (1.18%) Data Centre
14 13 (1.18%) Replication
15 11 (1.00%) Video on Demand
16 9 (0.81%) Animation
16 9 (0.81%) Foreign Exchange (FX)
Operating Systems
1 149 (13.48%) Linux
2 62 (5.61%) Windows
3 55 (4.98%) Android
4 52 (4.71%) Apple iOS
5 44 (3.98%) Unix
6 26 (2.35%) Red Hat Enterprise Linux
7 20 (1.81%) Windows Server
8 10 (0.90%) Windows Server 2012
9 7 (0.63%) CentOS
10 6 (0.54%) Ubuntu
11 2 (0.18%) Mac OS X
12 1 (0.090%) Debian
12 1 (0.090%) VMS
Processes & Methodologies
1 558 (50.50%) Agile Software Development
2 345 (31.22%) TDD
3 262 (23.71%) Scrum
4 214 (19.37%) Continuous Integration
5 201 (18.19%) DevOps
6 186 (16.83%) Microservices
7 184 (16.65%) BDD
8 170 (15.38%) Test Automation
9 129 (11.67%) MVC
10 110 (9.95%) Data Modelling
11 108 (9.77%) Front End Development
12 86 (7.78%) Kanban
13 85 (7.69%) Business Intelligence
13 85 (7.69%) SOA
14 82 (7.42%) Pair Programming
15 81 (7.33%) OO
15 81 (7.33%) Open Source
16 77 (6.97%) Continuous Delivery
17 70 (6.33%) ETL
18 63 (5.70%) Problem-Solving
Programming Languages
1 431 (39.00%) Java
2 418 (37.83%) JavaScript
3 268 (24.25%) SQL
4 134 (12.13%) Java 8
5 127 (11.49%) C#
6 101 (9.14%) Python
7 83 (7.51%) Ruby
8 80 (7.24%) PowerShell
9 47 (4.25%) Groovy
9 47 (4.25%) TypeScript
10 45 (4.07%) Bash Shell
11 44 (3.98%) ES6
12 38 (3.44%) Perl
13 37 (3.35%) PL/SQL
13 37 (3.35%) Scala
14 31 (2.81%) PHP
15 26 (2.35%) Kotlin
16 22 (1.99%) C++
17 21 (1.90%) Apple Swift
18 16 (1.45%) T-SQL
Qualifications
1 70 (6.33%) Security Cleared
2 51 (4.62%) SC Cleared
3 40 (3.62%) Degree
4 22 (1.99%) BPSS Clearance
5 14 (1.27%) AWS Certification
6 12 (1.09%) Computer Science Degree
7 7 (0.63%) Numerate Degree
8 6 (0.54%) CISSP
9 5 (0.45%) SSCP
10 3 (0.27%) DV Cleared
10 3 (0.27%) ISTQB
11 2 (0.18%) CTC Cleared
11 2 (0.18%) ISEB
12 1 (0.090%) A+ Certification
12 1 (0.090%) CISA
12 1 (0.090%) CISM
12 1 (0.090%) ISSMP
12 1 (0.090%) ITIL Certification
12 1 (0.090%) Microsoft Certification
12 1 (0.090%) Sun Certification
Quality Assurance & Compliance
1 80 (7.24%) QA
2 10 (0.90%) Data Quality
2 10 (0.90%) PSD2
3 9 (0.81%) PCI DSS
4 8 (0.72%) ISO/IEC 27001
4 8 (0.72%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
5 4 (0.36%) Basel III
5 4 (0.36%) GDPR
5 4 (0.36%) IFRS
5 4 (0.36%) IFRS 9
6 3 (0.27%) ISO 20022
7 2 (0.18%) Dodd-Frank
7 2 (0.18%) EMIR
7 2 (0.18%) MiFID
7 2 (0.18%) WCAG
8 1 (0.090%) Disclosure Scotland
8 1 (0.090%) HL7
8 1 (0.090%) OASIS TOSCA
8 1 (0.090%) PMO
System Software
1 171 (15.48%) Docker
2 43 (3.89%) Active Directory
3 14 (1.27%) VMware Infrastructure
4 9 (0.81%) Apache ZooKeeper
5 7 (0.63%) OpenAM
6 6 (0.54%) HDFS
7 3 (0.27%) Hyper-V
7 3 (0.27%) OpenDJ
7 3 (0.27%) XenApp
7 3 (0.27%) XenDesktop
8 2 (0.18%) KVM
8 2 (0.18%) NFS
9 1 (0.090%) iptables
9 1 (0.090%) Microsoft App-V
9 1 (0.090%) Virtual Machines
Systems Management
1 50 (4.52%) Ansible
2 40 (3.62%) Kubernetes
3 30 (2.71%) Puppet
4 27 (2.44%) Kibana
5 22 (1.99%) logstash
6 20 (1.81%) Opscode Chef
7 18 (1.63%) Terraform
8 14 (1.27%) Suricata
9 11 (1.00%) Prometheus
9 11 (1.00%) SCCM
10 8 (0.72%) Docker Swarm
11 7 (0.63%) SCOM
11 7 (0.63%) Single Sign-On
12 6 (0.54%) WebSphere Service Registry and Repository
13 5 (0.45%) Rancher
14 4 (0.36%) Nagios
14 4 (0.36%) WSUS
15 3 (0.27%) CloudHub
15 3 (0.27%) Salt
16 2 (0.18%) Packer
Vendors
1 115 (10.41%) Microsoft
2 106 (9.59%) Oracle
3 67 (6.06%) Google
4 42 (3.80%) Splunk
5 25 (2.26%) MuleSoft
6 23 (2.08%) SAP
7 21 (1.90%) Atlassian
8 20 (1.81%) IBM
9 19 (1.72%) VMware
10 16 (1.45%) Tableau
11 15 (1.36%) Informatica
11 15 (1.36%) Salesforce.com
12 14 (1.27%) Qualys
13 13 (1.18%) Cisco
14 11 (1.00%) Red Hat
15 10 (0.90%) Adobe
15 10 (0.90%) Cloudera
16 9 (0.81%) Apple
16 9 (0.81%) Cypress Semiconductor
16 9 (0.81%) Dell