Period
to 12 December 2018

The following table provides summary statistics for contract job vacancies advertised in Central 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 12 December 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
London > Central London
6 months to
12 Dec 2018
Same period 2017 Same period 2016
Rank 100 87 93
Rank change year-on-year -13 +6 +50
Contract jobs citing JSON 247 246 228
As % of all contract IT jobs advertised in Central London 2.64% 2.83% 2.89%
As % of the Libraries, Frameworks & Software Standards category 6.46% 7.55% 7.76%
Number of daily rates quoted 202 200 187
Central London median daily rate £500 £450 £465
Median daily rate % change year-on-year +11.11% -3.23% +12.73%
10th Percentile £413 £375 £313
90th Percentile £625 £638 £588
London median daily rate £500 £475 £463
% change year-on-year +5.26% +2.70% +2.78%
Number of hourly rates quoted 0 0 0
Central London median hourly rate - - -
London median hourly rate £35.00 £42.50 £32.64
% change year-on-year -17.65% +30.21% +29.96%

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

All Software Libraries and Frameworks
Central London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 3,825 3,260 2,937
As % of all contract IT jobs advertised in Central London 40.94% 37.56% 37.22%
Number of daily rates quoted 3,128 2,708 2,440
Central London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +5.50%
10th Percentile £384 £363 £325
90th Percentile £650 £656 £635
London median daily rate £525 £500 £475
% change year-on-year +5.00% +5.26% +5.56%
Number of hourly rates quoted 4 12 4
Central London median hourly rate £27.00 £21.50 £35.00
Median hourly rate % change year-on-year +25.58% -38.57% -9.68%
10th Percentile £15.35 £18.55 £19.00
90th Percentile £81.03 £29.96 £56.31
London median hourly rate £37.50 £29.31 £40.00
% change year-on-year +27.94% -26.73% +14.29%

JSON
Job Vacancy Trend in Central London

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

Job vacancy trend for JSON in Central London

JSON
Contractor Daily Rate Trend in Central London

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

Contractor daily rate trend for JSON in Central London

JSON
Contractor Daily Rate Histogram in Central London

The daily rate distribution of IT jobs citing JSON in Central London over the 6 months to 12 December 2018.

Contractor daily rate histogram for JSON in Central London

JSON
Contractor Hourly Rate Trend in Central London

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

Contractor hourly rate trend for JSON in Central London

JSON
Contract Job Locations in Central 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 Central London region over the 6 months to 12 December 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
City of London -5 178 £500 +11.11% 57
West End of London -24 12 £625 +8.70% 1
City of Westminster -6 9 £470 -1.05%
Southwark -30 6 £475 +11.76%
JSON
London

For the 6 months to 12 December 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 Central London region with a requirement for JSON.

1 114 (46.15%) Agile Software Development
2 107 (43.32%) REST
3 101 (40.89%) JavaScript
4 97 (39.27%) Git (software)
5 96 (38.87%) Java
6 92 (37.25%) XML
7 85 (34.41%) HTML
8 78 (31.58%) TDD
9 74 (29.96%) Scrum
10 69 (27.94%) Finance
10 69 (27.94%) CSS
11 59 (23.89%) DevOps
12 57 (23.08%) Continuous Integration
13 52 (21.05%) Node.js
14 51 (20.65%) Jenkins
15 50 (20.24%) AngularJS
15 50 (20.24%) Test Automation
16 47 (19.03%) SQL
16 47 (19.03%) SOAP
17 46 (18.62%) Microservices
18 43 (17.41%) Web Services
18 43 (17.41%) SQL Server
18 43 (17.41%) jQuery
19 42 (17.00%) HTML5
19 42 (17.00%) React
20 41 (16.60%) .NET
21 40 (16.19%) Microsoft Azure
22 37 (14.98%) Microsoft
23 36 (14.57%) C#
23 36 (14.57%) JIRA

JSON
Co-occurring IT Skills in Central 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 14 (5.67%) Confluence
2 7 (2.83%) Apache
2 7 (2.83%) Cloud Foundry
3 6 (2.43%) Elasticsearch
3 6 (2.43%) nginx
3 6 (2.43%) Tomcat
4 5 (2.02%) IIS
5 4 (1.62%) SharePoint
5 4 (1.62%) WebSphere
6 3 (1.21%) Oracle SOA Suite
7 2 (0.81%) CMS
7 2 (0.81%) Drupal
8 1 (0.40%) Mule
8 1 (0.40%) OpenStack
8 1 (0.40%) WebSphere Application Server
8 1 (0.40%) WordPress
Applications
1 13 (5.26%) Microsoft Excel
2 2 (0.81%) Photoshop
3 1 (0.40%) Microsoft Office
Business Applications
1 1 (0.40%) Dynamics CRM
1 1 (0.40%) Remedy ITSM
1 1 (0.40%) ScheduALL
Cloud Services
1 40 (16.19%) Microsoft Azure
2 32 (12.96%) Amazon AWS
3 17 (6.88%) GitHub
3 17 (6.88%) IaaS
4 16 (6.48%) PaaS
5 15 (6.07%) OpenShift
6 11 (4.45%) Azure Active Directory
7 9 (3.64%) Office 365
8 8 (3.24%) Amazon EC2
8 8 (3.24%) Amazon S3
8 8 (3.24%) Heroku
9 6 (2.43%) Google Cloud Platform
10 5 (2.02%) Amazon SQS
10 5 (2.02%) npm
11 4 (1.62%) SaaS
11 4 (1.62%) Serverless
12 2 (0.81%) AWS Fargate
12 2 (0.81%) BrowserStack
12 2 (0.81%) Cloud Computing
12 2 (0.81%) Google Play
Communications & Networking
1 9 (3.64%) HTTP
2 7 (2.83%) Internet
3 6 (2.43%) AMQP
4 4 (1.62%) MQTT
4 4 (1.62%) X.509
5 2 (0.81%) DNS
5 2 (0.81%) Firewall
5 2 (0.81%) VPN
6 1 (0.40%) BGP
6 1 (0.40%) HTTPS
6 1 (0.40%) IPFIX
6 1 (0.40%) Kerberos
6 1 (0.40%) MPLS
6 1 (0.40%) NGN
6 1 (0.40%) OSPF
6 1 (0.40%) SAN
6 1 (0.40%) SNMP
6 1 (0.40%) SSL
6 1 (0.40%) TACACS
6 1 (0.40%) TCP/IP
Database & Business Intelligence
1 43 (17.41%) SQL Server
2 28 (11.34%) Relational Database
3 24 (9.72%) MongoDB
3 24 (9.72%) NoSQL
4 15 (6.07%) MySQL
5 13 (5.26%) PostgreSQL
6 12 (4.86%) Big Data
7 11 (4.45%) SQL Server 2012
8 8 (3.24%) Redis
9 7 (2.83%) Hadoop
10 6 (2.43%) Azure SQL Database
11 5 (2.02%) RDBMS
12 4 (1.62%) Apache Hive
12 4 (1.62%) Cloud Spanner
12 4 (1.62%) SQL Server Integration Services
13 2 (0.81%) Amazon RDS
13 2 (0.81%) Amazon Redshift
13 2 (0.81%) Data Lake
13 2 (0.81%) Power BI
13 2 (0.81%) SQL Server 2008
Development Applications
1 97 (39.27%) Git (software)
2 51 (20.65%) Jenkins
3 36 (14.57%) JIRA
4 28 (11.34%) Selenium
5 19 (7.69%) Cucumber
6 15 (6.07%) Subversion
7 14 (5.67%) Maven
8 9 (3.64%) Gradle
8 9 (3.64%) gulp
8 9 (3.64%) Mercurial
9 8 (3.24%) Axure RP
9 8 (3.24%) Gatling
9 8 (3.24%) Geb
9 8 (3.24%) JUnit
9 8 (3.24%) TeamCity
10 7 (2.83%) Grunt
11 6 (2.43%) JMeter
11 6 (2.43%) SpecFlow
11 6 (2.43%) Team Foundation Server
11 6 (2.43%) WebDriver
General
1 69 (27.94%) Finance
2 25 (10.12%) Banking
3 10 (4.05%) Advertising
3 10 (4.05%) Front Office
4 6 (2.43%) Investment Banking
5 4 (1.62%) Automotive
5 4 (1.62%) Retail
5 4 (1.62%) Telecoms
6 3 (1.21%) Billing
6 3 (1.21%) Financial Institution
6 3 (1.21%) Marketing
6 3 (1.21%) Retail Banking
7 1 (0.40%) Digital Economy
7 1 (0.40%) Legal
Job Titles
1 147 (59.51%) Developer
2 34 (13.77%) Java Developer
3 27 (10.93%) Node.js Developer
4 25 (10.12%) Senior Developer
5 22 (8.91%) Angular Developer
6 19 (7.69%) Architect
7 18 (7.29%) C# Developer
7 18 (7.29%) Front End Developer (Client-Side Developer)
8 17 (6.88%) Full Stack Developer
9 16 (6.48%) React Developer
10 14 (5.67%) .NET Developer
11 13 (5.26%) Azure DevOps
11 13 (5.26%) JavaScript Developer
12 12 (4.86%) DevOps Engineer
13 11 (4.45%) C# .NET Developer
13 11 (4.45%) Ruby on Rails Developer
14 10 (4.05%) Android Developer
14 10 (4.05%) Azure Developer
14 10 (4.05%) UI Developer
15 9 (3.64%) Software Engineer
Libraries, Frameworks & Software Standards
1 107 (43.32%) REST
2 92 (37.25%) XML
3 85 (34.41%) HTML
4 69 (27.94%) CSS
5 52 (21.05%) Node.js
6 50 (20.24%) AngularJS
7 47 (19.03%) SOAP
8 43 (17.41%) jQuery
8 43 (17.41%) Web Services
9 42 (17.00%) HTML5
9 42 (17.00%) React
10 41 (16.60%) .NET
11 30 (12.15%) RESTful
12 26 (10.53%) CSS3
13 25 (10.12%) Twitter Bootstrap
14 23 (9.31%) OAuth
15 21 (8.50%) OpenID
16 20 (8.10%) Redux
17 19 (7.69%) Spring
18 17 (6.88%) Spring Boot
Miscellaneous
1 21 (8.50%) Fintech
2 20 (8.10%) Analytical Skills
3 18 (7.29%) Mobile App
4 14 (5.67%) Self-Motivation
4 14 (5.67%) User Experience
5 12 (4.86%) Clustering
5 12 (4.86%) Fat Client
5 12 (4.86%) Thin Client
6 10 (4.05%) Virtual Team
7 8 (3.24%) Greenfield Project
8 7 (2.83%) Enterprise Software
8 7 (2.83%) NHS
9 5 (2.02%) Data Structures
9 5 (2.02%) Fixed Income
10 4 (1.62%) Analytical Mindset
10 4 (1.62%) Data Centre
10 4 (1.62%) Derivative
10 4 (1.62%) Internet of Things
10 4 (1.62%) PKI
11 3 (1.21%) Client/Server
Operating Systems
1 27 (10.93%) Linux
2 25 (10.12%) Android
3 20 (8.10%) Apple iOS
4 9 (3.64%) Windows
5 7 (2.83%) Unix
6 4 (1.62%) Red Hat Enterprise Linux
7 3 (1.21%) Windows Server
8 2 (0.81%) Windows Server 2012
9 1 (0.40%) CentOS
9 1 (0.40%) Debian
9 1 (0.40%) Ubuntu
Processes & Methodologies
1 114 (46.15%) Agile Software Development
2 78 (31.58%) TDD
3 74 (29.96%) Scrum
4 59 (23.89%) DevOps
5 57 (23.08%) Continuous Integration
6 50 (20.24%) Test Automation
7 46 (18.62%) Microservices
8 32 (12.96%) BDD
9 31 (12.55%) Software Engineering
10 28 (11.34%) Front End Development
11 26 (10.53%) MVC
11 26 (10.53%) SOA
12 22 (8.91%) Continuous Deployment
12 22 (8.91%) OO
12 22 (8.91%) User Stories
13 21 (8.50%) Kanban
14 20 (8.10%) Use Case
15 19 (7.69%) API Integration
16 18 (7.29%) Unit Testing
17 17 (6.88%) Analytics
Programming Languages
1 101 (40.89%) JavaScript
2 96 (38.87%) Java
3 47 (19.03%) SQL
4 36 (14.57%) C#
5 31 (12.55%) Python
6 22 (8.91%) Ruby
6 22 (8.91%) TypeScript
7 19 (7.69%) PowerShell
8 14 (5.67%) ES6
9 12 (4.86%) Java 8
10 10 (4.05%) Kotlin
11 9 (3.64%) C++
11 9 (3.64%) PL/SQL
12 8 (3.24%) Groovy
12 8 (3.24%) PHP
13 6 (2.43%) Bash Shell
14 5 (2.02%) Apple Swift
15 4 (1.62%) ES7
15 4 (1.62%) Objective-C
15 4 (1.62%) XPath
Qualifications
1 19 (7.69%) Degree
2 12 (4.86%) Numerate Degree
3 2 (0.81%) AWS Certification
3 2 (0.81%) ISTQB
3 2 (0.81%) SC Cleared
3 2 (0.81%) Security Cleared
4 1 (0.40%) Computer Science Degree
4 1 (0.40%) DBS Check
4 1 (0.40%) ISEB
4 1 (0.40%) ITIL Certification
Quality Assurance & Compliance
1 24 (9.72%) QA
2 2 (0.81%) GDPR
2 2 (0.81%) PSD2
3 1 (0.40%) HL7
3 1 (0.40%) ISO 20022
3 1 (0.40%) Solvency II
System Software
1 27 (10.93%) Docker
2 11 (4.45%) Active Directory
3 1 (0.40%) Apache ZooKeeper
3 1 (0.40%) HDFS
3 1 (0.40%) KVM
3 1 (0.40%) OpenAM
3 1 (0.40%) OpenDJ
3 1 (0.40%) VMware Infrastructure
Systems Management
1 24 (9.72%) Ansible
2 17 (6.88%) Kubernetes
3 6 (2.43%) Kibana
3 6 (2.43%) logstash
4 4 (1.62%) Puppet
5 3 (1.21%) Opscode Chef
6 2 (0.81%) Prometheus
6 2 (0.81%) Single Sign-On
6 2 (0.81%) Terraform
6 2 (0.81%) WebSphere Service Registry and Repository
7 1 (0.40%) collectd
7 1 (0.40%) Docker Swarm
7 1 (0.40%) Grafana
7 1 (0.40%) Graphite
7 1 (0.40%) Icinga
7 1 (0.40%) Nagios
7 1 (0.40%) Netcool
7 1 (0.40%) Observium
7 1 (0.40%) Salt
7 1 (0.40%) Suricata
Vendors
1 37 (14.98%) Microsoft
2 14 (5.67%) Oracle
3 10 (4.05%) Google
4 9 (3.64%) Atlassian
5 7 (2.83%) Splunk
6 5 (2.02%) IBM
7 4 (1.62%) Cadence
7 4 (1.62%) Kony
8 3 (1.21%) Salesforce.com
9 2 (0.81%) AppDynamics
9 2 (0.81%) Cisco
9 2 (0.81%) Hortonworks
9 2 (0.81%) Juniper
10 1 (0.40%) Dynatrace
10 1 (0.40%) ForgeRock
10 1 (0.40%) MuleSoft
10 1 (0.40%) New Relic
10 1 (0.40%) Perfecto Mobile
10 1 (0.40%) ServiceNow
10 1 (0.40%) Snow