Period
to 22 May 2018

The following table provides summary statistics for contract job vacancies advertised in the City of 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 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
Central London > City of London
6 months to
22 May 2018
Same period 2017 Same period 2016
Rank 104 114 113
Rank change year-on-year +10 -1 0
Contract jobs citing JSON 165 129 116
As % of all contract IT jobs advertised in the City of London 2.39% 2.11% 1.79%
As % of the Libraries, Frameworks & Software Standards category 6.23% 5.76% 5.42%
Number of daily rates quoted 131 102 100
City of London median daily rate £500 £450 £425
Median daily rate % change year-on-year +11.11% +5.88% +6.25%
10th Percentile £375 £322 £317
90th Percentile £615 £636 £589
Central London median daily rate £500 £450 £425
% change year-on-year +11.11% +5.88% +5.26%
Number of hourly rates quoted 0 1 0
City of London median hourly rate - £26.80 -
Central London median hourly rate - £26.80 -

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

All Software Libraries and Frameworks
City of London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 2,647 2,240 2,139
As % of all contract IT jobs advertised in the City of London 38.28% 36.58% 33.09%
Number of daily rates quoted 2,182 1,849 1,806
City of London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +5.56%
10th Percentile £365 £331 £313
90th Percentile £663 £644 £638
Central London median daily rate £505 £475 £455
% change year-on-year +6.32% +4.40% +1.11%
Number of hourly rates quoted 14 5 5
City of London median hourly rate £21.75 £24.86 £43.57
Median hourly rate % change year-on-year -12.51% -42.94% +79.82%
10th Percentile £21.08 £23.98 £17.09
90th Percentile £58.23 £33.73 £60.00
Central London median hourly rate £22.00 £24.86 £43.57
% change year-on-year -11.50% -42.94% +59.19%

JSON
Job Vacancy Trend in the City of London

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

Job vacancy trend for JSON in the City of London

JSON
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for JSON in the City of London

JSON
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing JSON in the City of London over the 6 months to 22 May 2018.

Contractor daily rate histogram for JSON in the City of London

JSON
Contractor Hourly Rate Trend in the City of London

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

Contractor hourly rate trend for JSON in the City of London

For the 6 months to 22 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 City of London region with a requirement for JSON.

1 85 (51.52%) REST
2 69 (41.82%) Java
3 67 (40.61%) C#
4 56 (33.94%) .NET
5 54 (32.73%) XML
6 53 (32.12%) Agile Software Development
7 49 (29.70%) TDD
7 49 (29.70%) JavaScript
8 48 (29.09%) Finance
8 48 (29.09%) Git (software)
8 48 (29.09%) DevOps
9 46 (27.88%) Microsoft Azure
10 40 (24.24%) HTML
11 39 (23.64%) PowerShell
12 38 (23.03%) SQL
13 37 (22.42%) SQL Server
14 36 (21.82%) SOAP
15 34 (20.61%) Web Services
15 34 (20.61%) Jenkins
16 32 (19.39%) Active Directory
17 29 (17.58%) Continuous Integration
18 28 (16.97%) Node.js
18 28 (16.97%) Microservices
18 28 (16.97%) Scrum
19 27 (16.36%) React
19 27 (16.36%) AngularJS
19 27 (16.36%) Amazon AWS
20 25 (15.15%) Test Automation
21 24 (14.55%) Team Foundation Server
21 24 (14.55%) Microsoft

JSON
Co-occurring IT Skills in the City of 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 8 (4.85%) Elasticsearch
2 7 (4.24%) Confluence
3 4 (2.42%) Apache Solr
3 4 (2.42%) SharePoint
3 4 (2.42%) Tomcat
3 4 (2.42%) WebLogic
4 3 (1.82%) Apache
4 3 (1.82%) JBoss
4 3 (1.82%) Oracle SOA Suite
4 3 (1.82%) WebSphere
5 2 (1.21%) Apache Spark
5 2 (1.21%) Ethereum
6 1 (0.61%) Adobe Experience Manager
6 1 (0.61%) CMS
6 1 (0.61%) GemFire
6 1 (0.61%) Hyperledger
6 1 (0.61%) Liferay
Applications
1 7 (4.24%) Microsoft Excel
2 4 (2.42%) Spreadsheet
3 1 (0.61%) Microsoft Office
3 1 (0.61%) Microsoft Project
3 1 (0.61%) MS Visio
Business Applications
1 1 (0.61%) Distributed Ledger
1 1 (0.61%) Dynamics CRM
1 1 (0.61%) Dynamics GP
Cloud Services
1 46 (27.88%) Microsoft Azure
2 27 (16.36%) Amazon AWS
3 10 (6.06%) GitHub
3 10 (6.06%) IaaS
4 8 (4.85%) Amazon EC2
5 7 (4.24%) Amazon CloudWatch
5 7 (4.24%) Amazon S3
6 6 (3.64%) Google Cloud Platform
7 5 (3.03%) Amazon SQS
7 5 (3.03%) Heroku
7 5 (3.03%) npm
8 4 (2.42%) PaaS
9 3 (1.82%) Amazon ELB
9 3 (1.82%) Azure Active Directory
9 3 (1.82%) Route 53
9 3 (1.82%) Virtual Private Cloud
10 2 (1.21%) Salesforce Service Cloud
10 2 (1.21%) Yarn
11 1 (0.61%) Firebase
11 1 (0.61%) Serverless
Communications & Networking
1 14 (8.48%) HTTP
2 6 (3.64%) DNS
2 6 (3.64%) Firewall
3 3 (1.82%) AMQP
3 3 (1.82%) Bluetooth
3 3 (1.82%) Network Security
3 3 (1.82%) TCP/IP
3 3 (1.82%) WAN
3 3 (1.82%) X.509
4 2 (1.21%) BIG-IP
4 2 (1.21%) Internet
4 2 (1.21%) Intranet
4 2 (1.21%) LAN
5 1 (0.61%) BGP
5 1 (0.61%) Cisco Firepower
5 1 (0.61%) Cisco ISE
5 1 (0.61%) Cisco Nexus
5 1 (0.61%) MPLS
5 1 (0.61%) snoop
5 1 (0.61%) TACACS
Database & Business Intelligence
1 37 (22.42%) SQL Server
2 17 (10.30%) Big Data
3 14 (8.48%) NoSQL
4 12 (7.27%) Hadoop
4 12 (7.27%) Relational Database
5 9 (5.45%) MongoDB
6 7 (4.24%) HBase
7 6 (3.64%) PostgreSQL
8 5 (3.03%) Power BI
9 4 (2.42%) Apache Cassandra
9 4 (2.42%) Apache Hive
9 4 (2.42%) Blockchain
9 4 (2.42%) Data Warehouse
9 4 (2.42%) MySQL
9 4 (2.42%) SQL Server Integration Services
10 3 (1.82%) Amazon RDS
10 3 (1.82%) Bigtable
10 3 (1.82%) Oracle Database
10 3 (1.82%) Redis
10 3 (1.82%) SQL Server 2014
Development Applications
1 48 (29.09%) Git (software)
2 34 (20.61%) Jenkins
3 24 (14.55%) Team Foundation Server
4 21 (12.73%) Visual Studio Team System
5 20 (12.12%) Visual Studio
6 19 (11.52%) JIRA
7 11 (6.67%) Selenium
8 10 (6.06%) Maven
9 7 (4.24%) JUnit
10 5 (3.03%) Gradle
11 4 (2.42%) Subversion
12 3 (1.82%) Artifactory
12 3 (1.82%) Crashlytics
12 3 (1.82%) gulp
12 3 (1.82%) JMeter
12 3 (1.82%) Mockito
12 3 (1.82%) NUnit
12 3 (1.82%) Sonatype Nexus
12 3 (1.82%) TeamCity
12 3 (1.82%) WebDriver
General
1 48 (29.09%) Finance
2 17 (10.30%) Legal
3 13 (7.88%) Banking
4 9 (5.45%) Law
5 5 (3.03%) Financial Institution
6 4 (2.42%) Front Office
6 4 (2.42%) Retail Banking
7 3 (1.82%) Advertising
7 3 (1.82%) Telecoms
8 1 (0.61%) Games
8 1 (0.61%) Investment Banking
8 1 (0.61%) Marketing
Job Titles
1 89 (53.94%) Developer
2 31 (18.79%) DevOps Engineer
3 27 (16.36%) Azure DevOps
3 27 (16.36%) Azure DevOps Engineer
3 27 (16.36%) Azure Engineer
4 18 (10.91%) Automation Engineer
5 14 (8.48%) Architect
5 14 (8.48%) C# Developer
6 12 (7.27%) Java Developer
6 12 (7.27%) JavaScript Developer
6 12 (7.27%) Senior Developer
7 9 (5.45%) .NET Developer
7 9 (5.45%) PowerShell Engineer
8 8 (4.85%) Agile Developer
8 8 (4.85%) Front End Developer (Client-Side Developer)
9 7 (4.24%) Azure Developer
10 6 (3.64%) C# .NET Developer
10 6 (3.64%) Full Stack Developer
10 6 (3.64%) PowerShell Developer
11 5 (3.03%) Digital Architect
Libraries, Frameworks & Software Standards
1 85 (51.52%) REST
2 56 (33.94%) .NET
3 54 (32.73%) XML
4 40 (24.24%) HTML
5 36 (21.82%) SOAP
6 34 (20.61%) Web Services
7 28 (16.97%) Node.js
8 27 (16.36%) AngularJS
8 27 (16.36%) React
9 23 (13.94%) CSS
10 22 (13.33%) HTML5
11 21 (12.73%) RESTful
12 20 (12.12%) RabbitMQ
13 15 (9.09%) ASP.NET Web API
13 15 (9.09%) Spring
14 13 (7.88%) CSS3
14 13 (7.88%) Hibernate
15 12 (7.27%) Spring Boot
16 11 (6.67%) J2EE
17 10 (6.06%) OAuth
Miscellaneous
1 9 (5.45%) User Experience
2 8 (4.85%) Mobile App
3 7 (4.24%) Virtual Team
4 6 (3.64%) Computer Science
5 5 (3.03%) Greenfield Project
6 4 (2.42%) Analytical Skills
6 4 (2.42%) Derivative
6 4 (2.42%) Fintech
6 4 (2.42%) Reference Data
7 3 (1.82%) Data Centre
7 3 (1.82%) Data Structures
7 3 (1.82%) Foreign Exchange (FX)
8 2 (1.21%) Clustering
8 2 (1.21%) Equity Derivative
8 2 (1.21%) Hybrid Cloud
8 2 (1.21%) iPad
8 2 (1.21%) PKI
8 2 (1.21%) Private Cloud
8 2 (1.21%) Reinsurance
9 1 (0.61%) Enterprise Software
Operating Systems
1 23 (13.94%) Windows
2 20 (12.12%) Windows Server
3 17 (10.30%) Linux
4 12 (7.27%) Android
5 10 (6.06%) Unix
6 9 (5.45%) Apple iOS
7 3 (1.82%) Windows Server 2012
Processes & Methodologies
1 53 (32.12%) Agile Software Development
2 49 (29.70%) TDD
3 48 (29.09%) DevOps
4 29 (17.58%) Continuous Integration
5 28 (16.97%) Microservices
5 28 (16.97%) Scrum
6 25 (15.15%) Test Automation
7 18 (10.91%) API Development
8 15 (9.09%) Deployment Automation
9 13 (7.88%) MVC
9 13 (7.88%) OOP
10 12 (7.27%) Data Modelling
10 12 (7.27%) OO
10 12 (7.27%) SOA
10 12 (7.27%) Software Engineering
11 11 (6.67%) ETL
11 11 (6.67%) Front End Development
12 10 (6.06%) API Integration
12 10 (6.06%) MapReduce
12 10 (6.06%) SDLC
Programming Languages
1 69 (41.82%) Java
2 67 (40.61%) C#
3 49 (29.70%) JavaScript
4 39 (23.64%) PowerShell
5 38 (23.03%) SQL
6 20 (12.12%) Python
7 13 (7.88%) Java 8
8 11 (6.67%) Ruby
9 6 (3.64%) C++
9 6 (3.64%) Scala
10 5 (3.03%) ES6
10 5 (3.03%) XPath
11 4 (2.42%) C
11 4 (2.42%) Go
11 4 (2.42%) R
12 3 (1.82%) Bash Shell
12 3 (1.82%) Shell Script
13 2 (1.21%) Apex Code
13 2 (1.21%) Groovy
13 2 (1.21%) T-SQL
Qualifications
1 14 (8.48%) Security Cleared
2 10 (6.06%) Degree
2 10 (6.06%) SC Cleared
3 3 (1.82%) DV Cleared
4 2 (1.21%) A+ Certification
4 2 (1.21%) Computer Science Degree
4 2 (1.21%) Master's Degree
5 1 (0.61%) ISEB
5 1 (0.61%) ISTQB
5 1 (0.61%) Numerate Degree
Quality Assurance & Compliance
1 7 (4.24%) QA
2 3 (1.82%) Data Quality
2 3 (1.82%) PSD2
3 2 (1.21%) Dodd-Frank
3 2 (1.21%) EMIR
3 2 (1.21%) MiFID
4 1 (0.61%) GDPR
4 1 (0.61%) ISO 20022
System Software
1 32 (19.39%) Active Directory
2 19 (11.52%) Docker
3 3 (1.82%) HDFS
4 1 (0.61%) Apache ZooKeeper
4 1 (0.61%) Virtual Machines
Systems Management
1 9 (5.45%) Puppet
2 6 (3.64%) Ansible
3 4 (2.42%) Single Sign-On
4 3 (1.82%) Terraform
5 2 (1.21%) Control-M
5 2 (1.21%) ITRS Geneos
5 2 (1.21%) Matomo
5 2 (1.21%) Opscode Chef
6 1 (0.61%) BladeLogic
6 1 (0.61%) Cisco IPCC
6 1 (0.61%) HP ALM
6 1 (0.61%) Oozie
6 1 (0.61%) Systems Management Server (SMS)
6 1 (0.61%) WSUS
Vendors
1 24 (14.55%) Microsoft
2 13 (7.88%) Oracle
3 11 (6.67%) Apigee
4 7 (4.24%) New Relic
4 7 (4.24%) Rollbar
5 5 (3.03%) Salesforce.com
6 4 (2.42%) Cloudera
6 4 (2.42%) Hortonworks
6 4 (2.42%) Solace
7 3 (1.82%) Google
7 3 (1.82%) Tableau
8 2 (1.21%) DevExpress
8 2 (1.21%) F5
8 2 (1.21%) FXall
8 2 (1.21%) IBM
8 2 (1.21%) MuleSoft
8 2 (1.21%) Pardot
8 2 (1.21%) Reuters
8 2 (1.21%) Talend
9 1 (0.61%) ServiceNow