Period
to 25 January 2020

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 25 January 2020 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
25 Jan 2020
Same period 2019 Same period 2018
Rank 123 115 110
Rank change year-on-year -8 -5 -8
Contract jobs citing JSON 636 1,069 1,144
As % of all contract IT jobs advertised in London 2.14% 2.40% 2.45%
As % of the Libraries, Frameworks & Software Standards category 5.95% 6.22% 6.71%
Number of daily rates quoted 426 755 862
London median daily rate £500 £515 £475
Median daily rate % change year-on-year -2.91% +8.42% -
10th Percentile £325 £400 £368
90th Percentile £692 £650 £637
England median daily rate £475 £498 £470
% change year-on-year -4.52% +5.85% +7.43%
Number of hourly rates quoted 4 1 1
London median hourly rate £48.85 £35.00 £42.50
Median hourly rate % change year-on-year +39.57% -17.65% +27.70%
10th Percentile £37.83 £35.00 £41.25
90th Percentile £61.48 £35.00 £43.75
England median hourly rate £48.85 £35.00 £42.00
% change year-on-year +39.57% -16.67% +16.67%

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 10,694 17,178 17,046
As % of all contract IT jobs advertised in London 35.92% 38.62% 36.50%
Number of daily rates quoted 7,812 12,907 13,202
London median daily rate £525 £525 £500
Median daily rate % change year-on-year - +5.00% +5.26%
10th Percentile £375 £375 £350
90th Percentile £695 £675 £650
England median daily rate £500 £496 £475
% change year-on-year +0.81% +4.42% +11.76%
Number of hourly rates quoted 71 73 103
London median hourly rate £47.83 £36.00 £32.00
Median hourly rate % change year-on-year +32.86% +12.50% -28.89%
10th Percentile £25.00 £24.79 £20.15
90th Percentile £78.75 £53.75 £47.83
England median hourly rate £43.25 £41.50 £40.00
% change year-on-year +4.22% +3.75% -

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 25 January 2020.

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
Contractor Hourly Rate Histogram in London

The hourly rate distribution of IT jobs citing JSON in London over the 6 months to 25 January 2020.

Contractor hourly rate histogram 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 25 January 2020. 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 -19 104 £456 -10.98% 45
South London +20 27 £625 +19.05% 10
West London +18 27 £425 -2.86% 29
East London +8 10 £538 -4.44% 8
North London +3 1 £525 +16.67% 2
JSON
England

For the 6 months to 25 January 2020, 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.

1 299 (47.01%) XML
1 299 (47.01%) Agile Software Development
2 241 (37.89%) Java
2 241 (37.89%) JavaScript
3 224 (35.22%) REST
4 223 (35.06%) SQL
5 160 (25.16%) Git (software)
6 157 (24.69%) Azure
7 155 (24.37%) SQL Server
8 152 (23.90%) HTML
9 145 (22.80%) CSS
9 145 (22.80%) DevOps
10 144 (22.64%) Web Services
11 133 (20.91%) AWS
12 131 (20.60%) Jenkins
13 127 (19.97%) JIRA
14 121 (19.03%) Linux
15 118 (18.55%) C#
16 112 (17.61%) RESTful
17 111 (17.45%) .NET
18 110 (17.30%) Microservices
19 109 (17.14%) SOAP
20 108 (16.98%) Security Cleared
21 106 (16.67%) Python
21 106 (16.67%) Oracle
22 103 (16.19%) AngularJS
23 100 (15.72%) Continuous Integration
23 100 (15.72%) TDD
24 99 (15.57%) Docker
25 98 (15.41%) Node.js

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 69 (10.85%) Confluence
2 60 (9.43%) WebLogic
3 45 (7.08%) JBoss
4 39 (6.13%) Red Hat Fuse
5 37 (5.82%) MQSeries
6 21 (3.30%) Apache
6 21 (3.30%) SharePoint
7 16 (2.52%) IIS
8 15 (2.36%) Apache Spark
9 14 (2.20%) Oracle SOA Suite
10 12 (1.89%) Tomcat
10 12 (1.89%) WebSphere
11 10 (1.57%) CMS
12 8 (1.26%) Jupyter
13 4 (0.63%) Elasticsearch
13 4 (0.63%) NServiceBus
14 3 (0.47%) ArcGIS
14 3 (0.47%) GeoServer
14 3 (0.47%) Mule
14 3 (0.47%) WordPress
Applications
1 4 (0.63%) Chatbot
2 3 (0.47%) Microsoft Excel
2 3 (0.47%) Microsoft Office
3 1 (0.16%) MS Visio
3 1 (0.16%) Sketch
3 1 (0.16%) UXPin
Business Applications
1 9 (1.42%) Sparx Enterprise Architect
2 7 (1.10%) BusinessWorks
2 7 (1.10%) NetSuite
3 5 (0.79%) Remedy ITSM
4 3 (0.47%) Oracle BPM
5 1 (0.16%) Distributed Ledger
5 1 (0.16%) Dynamics CRM
5 1 (0.16%) Magento
5 1 (0.16%) Oracle Receivables
5 1 (0.16%) Payment Gateway
Cloud Services
1 157 (24.69%) Azure
2 133 (20.91%) AWS
3 54 (8.49%) GitHub
4 41 (6.45%) GCP
5 28 (4.40%) PaaS
6 22 (3.46%) IaaS
6 22 (3.46%) SaaS
7 21 (3.30%) Office 365
8 18 (2.83%) OpenShift
8 18 (2.83%) Power Platform
9 13 (2.04%) Serverless
9 13 (2.04%) Stackdriver
10 12 (1.89%) Datadog
10 12 (1.89%) npm
11 9 (1.42%) AWS Lambda
11 9 (1.42%) Azure Active Directory
11 9 (1.42%) Virtual Private Cloud
12 8 (1.26%) Google Analytics
13 7 (1.10%) Boomi
13 7 (1.10%) Slack
Communications & Networking
1 54 (8.49%) HTTP
2 17 (2.67%) VPN
3 9 (1.42%) Internet
4 8 (1.26%) SSL
5 7 (1.10%) Firewall
5 7 (1.10%) HTTPS
6 5 (0.79%) BGP
6 5 (0.79%) Cisco ASA
6 5 (0.79%) DNS
6 5 (0.79%) MPLS
6 5 (0.79%) Multicast
6 5 (0.79%) OSPF
6 5 (0.79%) Wireshark
7 4 (0.63%) Anycast
7 4 (0.63%) Cisco Nexus
7 4 (0.63%) EIGRP
7 4 (0.63%) TCP/IP
7 4 (0.63%) VXLAN
7 4 (0.63%) WLAN
8 3 (0.47%) Skype
Database & Business Intelligence
1 155 (24.37%) SQL Server
2 82 (12.89%) NoSQL
3 72 (11.32%) PostgreSQL
4 54 (8.49%) Relational Database
5 50 (7.86%) MySQL
6 40 (6.29%) Big Data
7 36 (5.66%) MongoDB
8 30 (4.72%) SQL Server Integration Services
9 27 (4.25%) Data Warehouse
10 19 (2.99%) Data Lake
10 19 (2.99%) RDBMS
11 18 (2.83%) Power BI
12 17 (2.67%) Apache Cassandra
13 16 (2.52%) SQL Server Reporting Services
14 15 (2.36%) SQL Server 2008
15 14 (2.20%) Hadoop
16 12 (1.89%) BigQuery
17 11 (1.73%) Amazon DynamoDB
18 10 (1.57%) SQL Server 2012
19 9 (1.42%) Cosmos DB
Development Applications
1 160 (25.16%) Git (software)
2 131 (20.60%) Jenkins
3 127 (19.97%) JIRA
4 42 (6.60%) Selenium
5 39 (6.13%) Maven
6 28 (4.40%) JUnit
7 26 (4.09%) Gradle
8 25 (3.93%) Cucumber
9 22 (3.46%) Visual Studio Team System
10 21 (3.30%) gulp
10 21 (3.30%) Postman
10 21 (3.30%) SoapUI
10 21 (3.30%) TeamCity
11 20 (3.14%) NUnit
12 18 (2.83%) SonarQube
12 18 (2.83%) Visual Studio
13 17 (2.67%) Mockito
13 17 (2.67%) Team Foundation Server
14 16 (2.52%) Sonatype Nexus
15 14 (2.20%) Subversion
General
1 90 (14.15%) Finance
2 42 (6.60%) Banking
3 25 (3.93%) Public Sector
4 18 (2.83%) Back Office
5 17 (2.67%) Games
5 17 (2.67%) Retail
6 13 (2.04%) Marketing
7 9 (1.42%) Financial Institution
7 9 (1.42%) Law
8 7 (1.10%) Multimedia
9 5 (0.79%) Automotive
9 5 (0.79%) Telecoms
10 4 (0.63%) Advertising
10 4 (0.63%) Publishing
11 3 (0.47%) Electronics
11 3 (0.47%) Front Office
11 3 (0.47%) Manufacturing
11 3 (0.47%) Music Industry
11 3 (0.47%) Retail Banking
12 2 (0.31%) Investment Banking
Job Titles
1 353 (55.50%) Developer
2 80 (12.58%) Architect
3 54 (8.49%) Java Developer
4 52 (8.18%) Senior Developer
5 44 (6.92%) Analyst
6 42 (6.60%) Front End Developer (Client-Side Developer)
7 35 (5.50%) C# Developer
8 31 (4.87%) .NET Developer
8 31 (4.87%) DevOps Engineer
9 27 (4.25%) Applications Architect
9 27 (4.25%) SQL Developer
10 26 (4.09%) React Developer
10 26 (4.09%) Technical Architect
11 24 (3.77%) Cloud Engineer
12 22 (3.46%) Node.js Developer
12 22 (3.46%) Tester
13 19 (2.99%) C# .NET Developer
14 17 (2.67%) Consultant
15 16 (2.52%) Software Developer
15 16 (2.52%) Solutions Architect
Libraries, Frameworks & Software Standards
1 299 (47.01%) XML
2 224 (35.22%) REST
3 152 (23.90%) HTML
4 145 (22.80%) CSS
5 144 (22.64%) Web Services
6 112 (17.61%) RESTful
7 111 (17.45%) .NET
8 109 (17.14%) SOAP
9 103 (16.19%) AngularJS
10 98 (15.41%) Node.js
11 63 (9.91%) Spring
12 60 (9.43%) Hibernate
13 59 (9.28%) RabbitMQ
14 57 (8.96%) HTML5
15 52 (8.18%) React
16 49 (7.70%) jQuery
17 43 (6.76%) Kafka
18 42 (6.60%) Apache Camel
19 41 (6.45%) .NET Framework
20 40 (6.29%) Java EE
Miscellaneous
1 64 (10.06%) Analytical Skills
2 44 (6.92%) Mobile App
3 35 (5.50%) Enterprise Software
4 34 (5.35%) User Experience
5 25 (3.93%) Virtual Team
6 18 (2.83%) Data Structures
7 16 (2.52%) Client/Server
8 14 (2.20%) Self-Motivation
9 12 (1.89%) Greenfield Project
10 11 (1.73%) Data Centre
11 7 (1.10%) Mobile Payment
11 7 (1.10%) Public Cloud
12 5 (0.79%) Enterprise Cloud
12 5 (0.79%) Management Information System
12 5 (0.79%) Xbox
13 4 (0.63%) Cyberthreat
13 4 (0.63%) N-Tier
13 4 (0.63%) Online Games
13 4 (0.63%) Semantic Web
14 3 (0.47%) Credit Risk
Operating Systems
1 121 (19.03%) Linux
2 54 (8.49%) Windows
3 24 (3.77%) Red Hat Enterprise Linux
4 23 (3.62%) Apple iOS
5 22 (3.46%) Android
6 21 (3.30%) Unix
7 12 (1.89%) CentOS
8 11 (1.73%) Mac OS
9 4 (0.63%) Mac OS X
10 3 (0.47%) Mac OS X Server
11 2 (0.31%) Windows Server
11 2 (0.31%) Windows Server 2012
12 1 (0.16%) Debian
12 1 (0.16%) Ubuntu
12 1 (0.16%) Windows 10
Processes & Methodologies
1 299 (47.01%) Agile Software Development
2 145 (22.80%) DevOps
3 110 (17.30%) Microservices
4 100 (15.72%) Continuous Integration
4 100 (15.72%) TDD
5 93 (14.62%) Test Automation
6 88 (13.84%) Scrum
7 76 (11.95%) Problem-Solving
8 72 (11.32%) BDD
8 72 (11.32%) MVC
9 65 (10.22%) Waterfall
10 54 (8.49%) Web Development
11 48 (7.55%) Front End Development
12 47 (7.39%) API Development
13 46 (7.23%) Open Source
14 45 (7.08%) SOA
15 43 (6.76%) ETL
15 43 (6.76%) Unit Testing
16 41 (6.45%) SDLC
17 39 (6.13%) Data Modelling
Programming Languages
1 241 (37.89%) Java
1 241 (37.89%) JavaScript
2 223 (35.06%) SQL
3 118 (18.55%) C#
4 106 (16.67%) Python
5 71 (11.16%) PL/SQL
6 70 (11.01%) T-SQL
7 55 (8.65%) Bash Shell
8 47 (7.39%) Ruby
9 33 (5.19%) Scala
10 32 (5.03%) Perl
11 28 (4.40%) PowerShell
12 24 (3.77%) Java 8
13 22 (3.46%) Kotlin
14 15 (2.36%) Shell Script
15 14 (2.20%) Go
15 14 (2.20%) Groovy
15 14 (2.20%) TypeScript
16 13 (2.04%) PHP
17 10 (1.57%) C++
Qualifications
1 108 (16.98%) Security Cleared
2 82 (12.89%) SC Cleared
3 47 (7.39%) Degree
4 21 (3.30%) Computer Science Degree
5 10 (1.57%) DV Cleared
6 9 (1.42%) RHCE
7 5 (0.79%) AWS Certification
8 4 (0.63%) JNCIE
8 4 (0.63%) JNCIP
9 3 (0.47%) Cisco Certification
10 2 (0.31%) CCIE
10 2 (0.31%) ISEB
10 2 (0.31%) ISTQB
10 2 (0.31%) Master's Degree
10 2 (0.31%) Microsoft Certification
11 1 (0.16%) BPSS Clearance
11 1 (0.16%) CCNA
11 1 (0.16%) CCNP
11 1 (0.16%) CTC Cleared
11 1 (0.16%) PhD
Quality Assurance & Compliance
1 44 (6.92%) QA
2 13 (2.04%) MiFID
3 7 (1.10%) Data Quality
4 4 (0.63%) PCI DSS
4 4 (0.63%) SLA
4 4 (0.63%) WCAG
5 3 (0.47%) ISO/IEC 27001
5 3 (0.47%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
5 3 (0.47%) NIST
6 2 (0.31%) HL7
6 2 (0.31%) IFRS
6 2 (0.31%) PMO
7 1 (0.16%) GDPR
7 1 (0.16%) GxP
System Software
1 99 (15.57%) Docker
2 15 (2.36%) Active Directory
3 3 (0.47%) VMware Infrastructure
4 2 (0.31%) Apache ZooKeeper
4 2 (0.31%) LXC
5 1 (0.16%) GridGain
5 1 (0.16%) HDFS
5 1 (0.16%) Oracle Clusterware
5 1 (0.16%) Oracle RAC
5 1 (0.16%) VirtualBox
5 1 (0.16%) VMware ESXi
5 1 (0.16%) vSphere
Systems Management
1 45 (7.08%) Kubernetes
2 39 (6.13%) Terraform
3 14 (2.20%) Suricata
4 12 (1.89%) Ansible
4 12 (1.89%) logstash
5 10 (1.57%) Jamf Pro
5 10 (1.57%) Opscode Chef
6 8 (1.26%) Norton AntiVirus
6 8 (1.26%) Symantec Endpoint Protection
7 7 (1.10%) Control-M
7 7 (1.10%) Istio
7 7 (1.10%) MIIS
8 3 (0.47%) Grafana
8 3 (0.47%) Kibana
8 3 (0.47%) Puppet
9 2 (0.31%) Oozie
9 2 (0.31%) Salt
10 1 (0.16%) Cisco CUCM
10 1 (0.16%) Microsoft Intune
10 1 (0.16%) Single Sign-On
Vendors
1 106 (16.67%) Oracle
2 75 (11.79%) Microsoft
3 66 (10.38%) Red Hat
4 55 (8.65%) Google
5 49 (7.70%) MuleSoft
6 37 (5.82%) Axway
6 37 (5.82%) Sybase
7 23 (3.62%) Splunk
8 15 (2.36%) Qualys
8 15 (2.36%) Salesforce.com
8 15 (2.36%) ServiceNow
9 14 (2.20%) Apple
9 14 (2.20%) Tableau
10 13 (2.04%) SAP
11 12 (1.89%) New Relic
11 12 (1.89%) TIBCO
12 10 (1.57%) WSO2
13 9 (1.42%) Cadence
13 9 (1.42%) Sparx
13 9 (1.42%) Talend