Period
to 18 October 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 18 October 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
18 Oct 2018
Same period 2017 Same period 2016
Rank 111 88 84
Rank change year-on-year -23 -4 +65
Contract jobs citing JSON 221 222 232
As % of all contract IT jobs advertised in Central London 2.43% 2.76% 2.85%
As % of the Libraries, Frameworks & Software Standards category 5.90% 7.36% 7.77%
Number of daily rates quoted 184 178 193
Central London median daily rate £500 £455 £450
Median daily rate % change year-on-year +9.89% +1.11% +5.88%
10th Percentile £400 £375 £317
90th Percentile £625 £638 £588
London median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% +5.88%
Number of hourly rates quoted 0 0 0
Central London median hourly rate - - -
London median hourly rate £35.00 £32.50 £51.00
% change year-on-year +7.69% -36.27% +158.69%

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 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 3,747 3,017 2,986
As % of all contract IT jobs advertised in Central London 41.24% 37.44% 36.74%
Number of daily rates quoted 3,067 2,451 2,504
Central London median daily rate £525 £500 £463
Median daily rate % change year-on-year +5.00% +8.11% +2.78%
10th Percentile £375 £355 £325
90th Percentile £659 £650 £633
London median daily rate £525 £500 £450
% change year-on-year +5.00% +11.11% -
Number of hourly rates quoted 9 10 4
Central London median hourly rate £32.00 £21.50 £35.00
Median hourly rate % change year-on-year +48.84% -38.57% -3.45%
10th Percentile £19.76 £18.25 £19.00
90th Percentile £70.15 £26.23 £56.31
London median hourly rate £43.50 £30.75 £42.50
% change year-on-year +41.46% -27.65% +23.19%

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 18 October 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 18 October 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 -14 179 £500 +11.11% 40
West End of London -22 9 £588 -7.84% 9
City of Westminster -3 7 £479 +0.79%
Southwark - 6 £475 - 1
JSON
London

For the 6 months to 18 October 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.

1 105 (47.51%) REST
2 92 (41.63%) Java
2 92 (41.63%) JavaScript
3 91 (41.18%) Agile Software Development
4 85 (38.46%) TDD
5 81 (36.65%) XML
6 80 (36.20%) HTML
7 72 (32.58%) Git (software)
8 67 (30.32%) Finance
9 65 (29.41%) CSS
10 51 (23.08%) DevOps
11 48 (21.72%) Microservices
12 46 (20.81%) Test Automation
13 45 (20.36%) SOAP
14 44 (19.91%) Scrum
15 42 (19.00%) SQL
16 41 (18.55%) Web Services
17 39 (17.65%) React
18 38 (17.19%) HTML5
19 37 (16.74%) Continuous Integration
20 36 (16.29%) AngularJS
21 34 (15.38%) Jenkins
21 34 (15.38%) Node.js
22 33 (14.93%) MongoDB
22 33 (14.93%) Amazon AWS
23 32 (14.48%) JIRA
24 31 (14.03%) SQL Server
24 31 (14.03%) Front End Development
25 29 (13.12%) .NET
25 29 (13.12%) RESTful

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 12 (5.43%) Confluence
1 12 (5.43%) Tomcat
2 8 (3.62%) Elasticsearch
3 7 (3.17%) nginx
3 7 (3.17%) WebSphere
4 6 (2.71%) Apache
4 6 (2.71%) IIS
4 6 (2.71%) Oracle SOA Suite
5 4 (1.81%) Cloud Foundry
5 4 (1.81%) JBoss
5 4 (1.81%) SharePoint
5 4 (1.81%) WebLogic
6 2 (0.90%) CMS
7 1 (0.45%) Mule
7 1 (0.45%) WordPress
Applications
1 2 (0.90%) Microsoft Excel
1 2 (0.90%) Photoshop
2 1 (0.45%) Microsoft Office
2 1 (0.45%) Spreadsheet
Business Applications
1 2 (0.90%) Dynamics CRM
2 1 (0.45%) Remedy ITSM
2 1 (0.45%) ScheduALL
Cloud Services
1 33 (14.93%) Amazon AWS
2 28 (12.67%) Microsoft Azure
3 23 (10.41%) IaaS
4 20 (9.05%) PaaS
5 15 (6.79%) Amazon S3
6 13 (5.88%) Heroku
7 11 (4.98%) Amazon EC2
7 11 (4.98%) Azure Active Directory
7 11 (4.98%) GitHub
8 10 (4.52%) Amazon SQS
8 10 (4.52%) npm
9 8 (3.62%) Office 365
10 6 (2.71%) Serverless
11 5 (2.26%) Amazon CloudWatch
11 5 (2.26%) Google Cloud Platform
12 3 (1.36%) AWS Lambda
12 3 (1.36%) OpenShift
13 2 (0.90%) AWS CloudFormation
13 2 (0.90%) SaaS
13 2 (0.90%) Salesforce Service Cloud
Communications & Networking
1 7 (3.17%) Internet
2 6 (2.71%) HTTP
3 5 (2.26%) AMQP
4 4 (1.81%) MQTT
5 3 (1.36%) VPN
5 3 (1.36%) X.509
6 2 (0.90%) BGP
6 2 (0.90%) BIG-IP
6 2 (0.90%) Firewall
6 2 (0.90%) MPLS
6 2 (0.90%) TACACS
7 1 (0.45%) DNS
7 1 (0.45%) Ethernet
7 1 (0.45%) HTTPS
7 1 (0.45%) Intranet
7 1 (0.45%) NGN
7 1 (0.45%) OSPF
7 1 (0.45%) SAN
7 1 (0.45%) SNMP
7 1 (0.45%) TCP/IP
Database & Business Intelligence
1 33 (14.93%) MongoDB
2 31 (14.03%) SQL Server
3 23 (10.41%) NoSQL
4 15 (6.79%) Big Data
5 13 (5.88%) Relational Database
6 12 (5.43%) MySQL
7 11 (4.98%) Hadoop
8 9 (4.07%) PostgreSQL
9 7 (3.17%) Redis
10 6 (2.71%) Azure SQL Database
11 5 (2.26%) Cloud Spanner
12 4 (1.81%) SQL Server 2012
13 3 (1.36%) Cosmos DB
13 3 (1.36%) Oracle Database
14 2 (0.90%) Amazon Redshift
14 2 (0.90%) Apache Hive
14 2 (0.90%) KDB
14 2 (0.90%) Oracle Database 11g
14 2 (0.90%) Power BI
14 2 (0.90%) SQL Server 2008
Development Applications
1 72 (32.58%) Git (software)
2 34 (15.38%) Jenkins
3 32 (14.48%) JIRA
4 21 (9.50%) Selenium
5 15 (6.79%) Cucumber
5 15 (6.79%) Maven
6 12 (5.43%) gulp
7 10 (4.52%) Babel
7 10 (4.52%) Grunt
8 9 (4.07%) webpack
9 8 (3.62%) Axure RP
9 8 (3.62%) Subversion
10 7 (3.17%) Visual Studio Team System
11 6 (2.71%) Geb
11 6 (2.71%) JUnit
11 6 (2.71%) Visual Studio
12 5 (2.26%) WebDriver
13 4 (1.81%) Jasmine
13 4 (1.81%) SoapUI
13 4 (1.81%) TeamCity
General
1 67 (30.32%) Finance
2 23 (10.41%) Banking
3 8 (3.62%) Advertising
4 7 (3.17%) Financial Institution
4 7 (3.17%) Front Office
5 5 (2.26%) Investment Banking
5 5 (2.26%) Legal
6 4 (1.81%) Automotive
7 3 (1.36%) Billing
7 3 (1.36%) Marketing
7 3 (1.36%) Retail
7 3 (1.36%) Telecoms
8 2 (0.90%) Retail Banking
9 1 (0.45%) Digital Economy
Job Titles
1 127 (57.47%) Developer
2 37 (16.74%) Java Developer
3 26 (11.76%) Senior Developer
4 22 (9.95%) Architect
5 21 (9.50%) Front End Developer (Client-Side Developer)
6 15 (6.79%) UI Developer
7 14 (6.33%) React Developer
7 14 (6.33%) Ruby on Rails Developer
8 13 (5.88%) JavaScript Developer
9 12 (5.43%) Azure DevOps
10 11 (4.98%) Angular Developer
10 11 (4.98%) DevOps Engineer
10 11 (4.98%) Integration Developer
10 11 (4.98%) Node.js Developer
10 11 (4.98%) Senior Java Developer
11 8 (3.62%) .NET Developer
12 7 (3.17%) C# Developer
12 7 (3.17%) Lead Developer
12 7 (3.17%) Lead Java Developer
12 7 (3.17%) Technical Leader
Libraries, Frameworks & Software Standards
1 105 (47.51%) REST
2 81 (36.65%) XML
3 80 (36.20%) HTML
4 65 (29.41%) CSS
5 45 (20.36%) SOAP
6 41 (18.55%) Web Services
7 39 (17.65%) React
8 38 (17.19%) HTML5
9 36 (16.29%) AngularJS
10 34 (15.38%) Node.js
11 29 (13.12%) .NET
11 29 (13.12%) RESTful
12 27 (12.22%) jQuery
13 26 (11.76%) OAuth
14 24 (10.86%) OpenID
15 23 (10.41%) CSS3
16 22 (9.95%) RabbitMQ
17 21 (9.50%) J2EE
18 20 (9.05%) Java EE
18 20 (9.05%) Spring Boot
Miscellaneous
1 19 (8.60%) User Experience
2 17 (7.69%) Fintech
3 15 (6.79%) Virtual Team
4 11 (4.98%) Mobile App
5 9 (4.07%) Greenfield Project
6 8 (3.62%) Analytical Skills
7 6 (2.71%) Computer Science
7 6 (2.71%) Derivative
8 5 (2.26%) NHS
9 4 (1.81%) Analytical Mindset
9 4 (1.81%) Data Centre
9 4 (1.81%) Data Structures
9 4 (1.81%) Enterprise Software
9 4 (1.81%) Internet of Things
9 4 (1.81%) Self-Motivation
10 3 (1.36%) Client/Server
10 3 (1.36%) PKI
11 2 (0.90%) Equity Derivative
11 2 (0.90%) Fixed Income
11 2 (0.90%) Foreign Exchange (FX)
Operating Systems
1 17 (7.69%) Linux
2 14 (6.33%) Apple iOS
3 10 (4.52%) Android
3 10 (4.52%) Unix
4 8 (3.62%) Windows
5 5 (2.26%) Windows Server
6 3 (1.36%) Red Hat Enterprise Linux
7 2 (0.90%) Windows Server 2012
8 1 (0.45%) CentOS
8 1 (0.45%) Debian
8 1 (0.45%) Ubuntu
Processes & Methodologies
1 91 (41.18%) Agile Software Development
2 85 (38.46%) TDD
3 51 (23.08%) DevOps
4 48 (21.72%) Microservices
5 46 (20.81%) Test Automation
6 44 (19.91%) Scrum
7 37 (16.74%) Continuous Integration
8 31 (14.03%) Front End Development
9 28 (12.67%) BDD
10 25 (11.31%) MVC
11 24 (10.86%) SOA
12 21 (9.50%) Analytics
13 17 (7.69%) Kanban
13 17 (7.69%) Software Engineering
13 17 (7.69%) Stakeholder Management
14 16 (7.24%) Wireframes
15 15 (6.79%) OO
15 15 (6.79%) SDLC
16 13 (5.88%) Problem-Solving
17 12 (5.43%) API Integration
Programming Languages
1 92 (41.63%) Java
1 92 (41.63%) JavaScript
2 42 (19.00%) SQL
3 28 (12.67%) Python
3 28 (12.67%) Ruby
4 23 (10.41%) C#
5 19 (8.60%) ES6
5 19 (8.60%) Java 8
6 18 (8.14%) PowerShell
7 10 (4.52%) TypeScript
8 7 (3.17%) C++
8 7 (3.17%) Groovy
8 7 (3.17%) PHP
9 6 (2.71%) Apple Swift
9 6 (2.71%) PL/SQL
9 6 (2.71%) Scala
10 4 (1.81%) ANSI SQL
10 4 (1.81%) C
10 4 (1.81%) ES7
10 4 (1.81%) T-SQL
Qualifications
1 7 (3.17%) Degree
2 5 (2.26%) Security Cleared
3 4 (1.81%) SC Cleared
4 3 (1.36%) A+ Certification
5 2 (0.90%) ISEB
5 2 (0.90%) ISTQB
6 1 (0.45%) AWS Certification
6 1 (0.45%) Computer Science Degree
6 1 (0.45%) DV Cleared
6 1 (0.45%) ITIL Certification
Quality Assurance & Compliance
1 20 (9.05%) QA
2 5 (2.26%) PSD2
3 2 (0.90%) GDPR
4 1 (0.45%) HL7
4 1 (0.45%) ISO 20022
System Software
1 28 (12.67%) Docker
2 11 (4.98%) Active Directory
3 1 (0.45%) KVM
3 1 (0.45%) OpenAM
3 1 (0.45%) OpenDJ
3 1 (0.45%) VMware Infrastructure
Systems Management
1 15 (6.79%) Ansible
2 11 (4.98%) Puppet
3 9 (4.07%) Kubernetes
4 3 (1.36%) Kibana
4 3 (1.36%) logstash
4 3 (1.36%) Opscode Chef
4 3 (1.36%) Terraform
5 2 (0.90%) Control-M
5 2 (0.90%) ITRS Geneos
5 2 (0.90%) Matomo
5 2 (0.90%) Salt
5 2 (0.90%) Single Sign-On
5 2 (0.90%) WebSphere Service Registry and Repository
6 1 (0.45%) Docker Swarm
6 1 (0.45%) Grafana
6 1 (0.45%) Graphite
6 1 (0.45%) Icinga
6 1 (0.45%) Observium
6 1 (0.45%) Packer
6 1 (0.45%) Prometheus
Vendors
1 20 (9.05%) Microsoft
2 18 (8.14%) Oracle
3 8 (3.62%) Google
4 5 (2.26%) Kony
4 5 (2.26%) New Relic
4 5 (2.26%) Rollbar
4 5 (2.26%) Salesforce.com
4 5 (2.26%) Splunk
5 4 (1.81%) Atlassian
5 4 (1.81%) IBM
6 3 (1.36%) Cisco
7 2 (0.90%) Cadence
7 2 (0.90%) F5
7 2 (0.90%) Juniper
7 2 (0.90%) Pardot
7 2 (0.90%) Solace
7 2 (0.90%) TIBCO
7 2 (0.90%) VMware
8 1 (0.45%) MuleSoft
8 1 (0.45%) SaltStack