Period
to 21 September 2019

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 21 September 2019 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
21 Sep 2019
Same period 2018 Same period 2017
Rank 117 97 96
Rank change year-on-year -20 -1 +4
Contract jobs citing JSON 125 190 183
As % of all contract IT jobs advertised in the City of London 2.02% 2.72% 2.70%
As % of the Libraries, Frameworks & Software Standards category 5.73% 6.69% 7.12%
Number of daily rates quoted 92 160 144
City of London median daily rate £550 £500 £475
Median daily rate % change year-on-year +10.00% +5.26% +5.56%
10th Percentile £366 £406 £375
90th Percentile £686 £625 £634
Central London median daily rate £525 £500 £475
% change year-on-year +5.00% +5.26% +5.56%
Number of hourly rates quoted 1 0 1
City of London median hourly rate £21.50 - £26.80
10th Percentile £21.25 - £25.52
90th Percentile £21.75 - £28.09
Central London median hourly rate £21.50 - £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 2,182 2,838 2,570
As % of all contract IT jobs advertised in the City of London 35.19% 40.61% 37.86%
Number of daily rates quoted 1,770 2,351 2,097
City of London median daily rate £536 £525 £500
Median daily rate % change year-on-year +2.14% +5.00% +5.26%
10th Percentile £408 £380 £363
90th Percentile £675 £675 £650
Central London median daily rate £525 £525 £500
% change year-on-year - +5.00% +11.11%
Number of hourly rates quoted 8 8 10
City of London median hourly rate £46.85 £32.00 £24.42
Median hourly rate % change year-on-year +46.40% +31.03% -43.95%
10th Percentile £21.95 £19.14 £20.28
90th Percentile £86.25 £73.98 £28.24
Central London median hourly rate £46.85 £32.00 £21.50
% change year-on-year +46.40% +48.84% -50.65%

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 21 September 2019.

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

JSON
Contract Job Locations in the City of 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 City of London region over the 6 months to 21 September 2019. 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
London Bridge -3 2 £525 +10.53%
JSON
Central London

For the 6 months to 21 September 2019, 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 62 (49.60%) Agile Software Development
2 54 (43.20%) XML
3 53 (42.40%) Java
4 47 (37.60%) REST
5 45 (36.00%) JavaScript
6 41 (32.80%) Web Services
7 37 (29.60%) SQL
8 36 (28.80%) DevOps
9 32 (25.60%) Azure
9 32 (25.60%) Python
10 31 (24.80%) HTML
10 31 (24.80%) Scrum
10 31 (24.80%) Git (software)
11 29 (23.20%) AWS
12 28 (22.40%) AngularJS
13 27 (21.60%) Microservices
14 25 (20.00%) CSS
14 25 (20.00%) Linux
15 22 (17.60%) Finance
15 22 (17.60%) Jenkins
16 21 (16.80%) SOAP
16 21 (16.80%) C#
16 21 (16.80%) Ruby
17 20 (16.00%) Continuous Integration
17 20 (16.00%) Docker
18 19 (15.20%) JIRA
18 19 (15.20%) TDD
19 18 (14.40%) Continuous Delivery
19 18 (14.40%) Bash Shell
20 17 (13.60%) Node.js

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 11 (8.80%) Confluence
2 6 (4.80%) JBoss
2 6 (4.80%) SharePoint
3 5 (4.00%) Apache
3 5 (4.00%) Apache Spark
3 5 (4.00%) CMS
3 5 (4.00%) WebSphere
4 4 (3.20%) Cloud Foundry
4 4 (3.20%) Elasticsearch
4 4 (3.20%) Tomcat
5 3 (2.40%) IIS
5 3 (2.40%) WebLogic
6 2 (1.60%) Apache Solr
6 2 (1.60%) Jetty
6 2 (1.60%) Jupyter
6 2 (1.60%) Magnolia
6 2 (1.60%) Oracle Self-Service HR
7 1 (0.80%) GeoServer
7 1 (0.80%) Headless CMS
7 1 (0.80%) SilverStripe
Applications
1 2 (1.60%) Microsoft Excel
Business Applications
1 5 (4.00%) Dynamics CRM
2 4 (3.20%) Dynamics AX
2 4 (3.20%) Dynamics NAV
3 2 (1.60%) BusinessWorks
4 1 (0.80%) Oracle BPM
4 1 (0.80%) WebTrends
Cloud Services
1 32 (25.60%) Azure
2 29 (23.20%) AWS
3 8 (6.40%) Amazon EC2
3 8 (6.40%) Power Platform
4 7 (5.60%) Amazon S3
4 7 (5.60%) Datadog
4 7 (5.60%) Office 365
5 6 (4.80%) GitHub
5 6 (4.80%) Serverless
5 6 (4.80%) Virtual Private Cloud
6 5 (4.00%) AWS CloudFormation
6 5 (4.00%) Dynamics 365
7 4 (3.20%) AWS Lambda
8 3 (2.40%) Amazon CloudWatch
8 3 (2.40%) Amazon ELB
8 3 (2.40%) Amazon Kinesis
8 3 (2.40%) GCP
8 3 (2.40%) npm
9 2 (1.60%) AWS CloudTrail
9 2 (1.60%) Azure Data Factory
Communications & Networking
1 9 (7.20%) VPN
2 7 (5.60%) Internet
3 2 (1.60%) HTTP
3 2 (1.60%) Intranet
3 2 (1.60%) SSH
4 1 (0.80%) BGP
4 1 (0.80%) Cisco ASA
4 1 (0.80%) Cisco Nexus
4 1 (0.80%) Cisco Wireless
4 1 (0.80%) DHCP
4 1 (0.80%) DNS
4 1 (0.80%) F5 BIG-IP GTM
4 1 (0.80%) F5 BIG-IP LTM
4 1 (0.80%) HTTPS
4 1 (0.80%) Multicast
4 1 (0.80%) Network Security
4 1 (0.80%) OSPF
4 1 (0.80%) TCP/IP
4 1 (0.80%) VXLAN
4 1 (0.80%) Wireshark
Database & Business Intelligence
1 17 (13.60%) SQL Server
2 10 (8.00%) NoSQL
3 8 (6.40%) Amazon RDS
3 8 (6.40%) Big Data
3 8 (6.40%) PostgreSQL
3 8 (6.40%) Power BI
4 7 (5.60%) Data Lake
4 7 (5.60%) Data Warehouse
4 7 (5.60%) MongoDB
4 7 (5.60%) MySQL
4 7 (5.60%) Relational Database
5 6 (4.80%) Amazon DynamoDB
6 5 (4.00%) Hadoop
6 5 (4.00%) Oracle Database
7 4 (3.20%) SQL Server Integration Services
8 3 (2.40%) RDBMS
9 2 (1.60%) Apache Hive
9 2 (1.60%) InterSystems Cache
9 2 (1.60%) OLAP
9 2 (1.60%) SQL Server Analysis Services
Development Applications
1 31 (24.80%) Git (software)
2 22 (17.60%) Jenkins
3 19 (15.20%) JIRA
4 10 (8.00%) Maven
4 10 (8.00%) Sonatype Nexus
5 8 (6.40%) Atlassian Bamboo
6 7 (5.60%) Bitbucket
7 6 (4.80%) Selenium
7 6 (4.80%) Subversion
7 6 (4.80%) Team Foundation Server
7 6 (4.80%) Visual Studio Team System
8 4 (3.20%) Eclipse
8 4 (3.20%) Gradle
9 3 (2.40%) Cucumber
9 3 (2.40%) IntelliJ
9 3 (2.40%) JUnit
9 3 (2.40%) Mercurial
9 3 (2.40%) TeamCity
10 2 (1.60%) ClearCase
10 2 (1.60%) Visual Studio
General
1 22 (17.60%) Finance
2 13 (10.40%) Banking
3 6 (4.80%) Advertising
4 4 (3.20%) Public Sector
4 4 (3.20%) Publishing
5 3 (2.40%) Marketing
5 3 (2.40%) Retail Banking
6 2 (1.60%) Automotive
6 2 (1.60%) Investment Banking
6 2 (1.60%) Law
7 1 (0.80%) Games
7 1 (0.80%) Italian Language
7 1 (0.80%) Pharmaceutical
7 1 (0.80%) Retail
Job Titles
1 56 (44.80%) Developer
2 17 (13.60%) Architect
2 17 (13.60%) DevOps Engineer
3 14 (11.20%) Java Developer
4 13 (10.40%) Senior Developer
5 11 (8.80%) Angular Developer
6 7 (5.60%) Azure DevOps
6 7 (5.60%) Azure DevOps Engineer
6 7 (5.60%) Azure Engineer
6 7 (5.60%) JavaScript Developer
7 5 (4.00%) Analyst
7 5 (4.00%) Azure Developer
7 5 (4.00%) Full Stack Developer
8 4 (3.20%) .NET Developer
8 4 (3.20%) Agile Java Developer
8 4 (3.20%) Author
8 4 (3.20%) Cloud Engineer
8 4 (3.20%) CRM Developer
8 4 (3.20%) Solutions Architect
8 4 (3.20%) Technical Author
Libraries, Frameworks & Software Standards
1 54 (43.20%) XML
2 47 (37.60%) REST
3 41 (32.80%) Web Services
4 31 (24.80%) HTML
5 28 (22.40%) AngularJS
6 25 (20.00%) CSS
7 21 (16.80%) SOAP
8 17 (13.60%) Node.js
8 17 (13.60%) Spring
9 16 (12.80%) .NET
10 11 (8.80%) RESTful
11 10 (8.00%) React
12 9 (7.20%) HTML5
12 9 (7.20%) jQuery
12 9 (7.20%) JSON Schema
12 9 (7.20%) Swagger
13 8 (6.40%) .NET Framework
13 8 (6.40%) Hibernate
13 8 (6.40%) Java EE
13 8 (6.40%) OAuth
Miscellaneous
1 11 (8.80%) Analytical Skills
1 11 (8.80%) User Experience
2 7 (5.60%) Enterprise Software
3 6 (4.80%) Greenfield Project
4 4 (3.20%) Enterprise Cloud
4 4 (3.20%) Mobile App
4 4 (3.20%) Self-Motivation
5 3 (2.40%) Cloud Native
6 2 (1.60%) Algorithms
6 2 (1.60%) Client/Server
6 2 (1.60%) Cyberthreat
6 2 (1.60%) Derivative
6 2 (1.60%) Reference Data
6 2 (1.60%) Reinsurance
6 2 (1.60%) Taxonomies
7 1 (0.80%) Data Centre
7 1 (0.80%) Digital Media
7 1 (0.80%) Private Cloud
Operating Systems
1 25 (20.00%) Linux
2 12 (9.60%) Red Hat Enterprise Linux
3 6 (4.80%) Android
4 5 (4.00%) Apple iOS
4 5 (4.00%) Unix
5 4 (3.20%) Windows
6 2 (1.60%) CentOS
6 2 (1.60%) Debian
6 2 (1.60%) Mac OS X
6 2 (1.60%) Solaris
6 2 (1.60%) Ubuntu
Processes & Methodologies
1 62 (49.60%) Agile Software Development
2 36 (28.80%) DevOps
3 31 (24.80%) Scrum
4 27 (21.60%) Microservices
5 20 (16.00%) Continuous Integration
6 19 (15.20%) TDD
7 18 (14.40%) Continuous Delivery
8 16 (12.80%) SDLC
9 15 (12.00%) Test Automation
10 14 (11.20%) Business Intelligence
10 14 (11.20%) Kanban
11 12 (9.60%) Data Modelling
11 12 (9.60%) Open Source
12 11 (8.80%) Fintech
12 11 (8.80%) Unit Testing
13 10 (8.00%) Configuration Management
13 10 (8.00%) Software Engineering
14 9 (7.20%) Infrastructure Automation
14 9 (7.20%) UML
15 8 (6.40%) Problem-Solving
Programming Languages
1 53 (42.40%) Java
2 45 (36.00%) JavaScript
3 37 (29.60%) SQL
4 32 (25.60%) Python
5 21 (16.80%) C#
5 21 (16.80%) Ruby
6 18 (14.40%) Bash Shell
7 14 (11.20%) Perl
8 10 (8.00%) PowerShell
9 6 (4.80%) Scala
10 5 (4.00%) Kotlin
10 5 (4.00%) PL/SQL
11 4 (3.20%) Clojure
11 4 (3.20%) T-SQL
12 3 (2.40%) Go
12 3 (2.40%) Java 8
12 3 (2.40%) Shell Script
12 3 (2.40%) TypeScript
12 3 (2.40%) XPath
13 2 (1.60%) ES6
Qualifications
1 15 (12.00%) Security Cleared
2 9 (7.20%) RHCE
3 5 (4.00%) AWS Certification
3 5 (4.00%) SC Cleared
4 2 (1.60%) Degree
5 1 (0.80%) CCIE
5 1 (0.80%) Cisco Certification
5 1 (0.80%) CTC Cleared
5 1 (0.80%) DV Cleared
Quality Assurance & Compliance
1 6 (4.80%) QA
2 2 (1.60%) ISO/IEC 27001
2 2 (1.60%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
2 2 (1.60%) NIST
2 2 (1.60%) PCI DSS
2 2 (1.60%) SLA
System Software
1 20 (16.00%) Docker
2 2 (1.60%) Active Directory
2 2 (1.60%) Apache ZooKeeper
2 2 (1.60%) HDFS
Systems Management
1 10 (8.00%) Opscode Chef
2 9 (7.20%) Suricata
3 6 (4.80%) Kubernetes
4 3 (2.40%) Terraform
5 2 (1.60%) Hadoop YARN
5 2 (1.60%) Puppet
5 2 (1.60%) Salt
6 1 (0.80%) Ansible
6 1 (0.80%) MIIS
6 1 (0.80%) Single Sign-On
Vendors
1 14 (11.20%) Oracle
2 11 (8.80%) Microsoft
3 10 (8.00%) Splunk
4 9 (7.20%) Qualys
4 9 (7.20%) Red Hat
5 6 (4.80%) ServiceNow
5 6 (4.80%) Tableau
6 5 (4.00%) IBM
7 4 (3.20%) Google
7 4 (3.20%) InterSystems
8 3 (2.40%) Cloudera
8 3 (2.40%) TIBCO
9 2 (1.60%) Atlassian
9 2 (1.60%) Bloomberg
9 2 (1.60%) Hortonworks
9 2 (1.60%) hybris
9 2 (1.60%) MuleSoft
9 2 (1.60%) Reuters
9 2 (1.60%) Sencha
9 2 (1.60%) WSO2