Period
to 17 January 2021

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 17 January 2021 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
17 Jan 2021
Same period 2020 Same period 2019
Rank 138 125 117
Rank change year-on-year -13 -8 -7
Contract jobs citing JSON 348 636 1,067
As % of all contract jobs advertised in London 2.02% 2.10% 2.40%
As % of the Libraries, Frameworks & Software Standards category 5.57% 5.85% 6.22%
Number of daily rates quoted 323 452 772
Median daily rate £520 £500 £513
Median daily rate % change year-on-year +4.00% -2.44% +7.89%
10th Percentile £363 £332 £379
90th Percentile £638 £700 £650
England median daily rate £475 £475 £488
% change year-on-year - -2.56% +4.84%
Number of hourly rates quoted 6 4 0
Median hourly rate £55.00 £48.85 -
Median hourly rate % change year-on-year +12.59% - -
England median hourly rate £46.50 £48.85 £35.00
% change year-on-year -4.81% +39.57% -11.95%

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 6,250 10,865 17,162
As % of all contract IT jobs advertised in London 36.31% 35.88% 38.63%
Number of daily rates quoted 4,623 8,093 13,006
Median daily rate £525 £525 £525
10th Percentile £358 £375 £370
90th Percentile £700 £700 £675
England median daily rate £488 £500 £495
% change year-on-year -2.50% +1.01% +4.21%
Number of hourly rates quoted 25 61 66
Median hourly rate £45.00 £47.83 £36.75
Median hourly rate % change year-on-year -5.92% +30.15% +26.72%
10th Percentile £22.75 £17.25 £24.11
90th Percentile £65.40 £78.75 £53.13
Median hourly rate £46.00 £46.00 £41.85
% change year-on-year - +9.93% +4.61%

JSON
Job Vacancy Trend in London

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

Job vacancy trend for JSON in London

JSON
Contractor Daily Rate Trend in London

3-month moving average daily rate quoted in jobs citing JSON in London.

Daily rate trend for JSON in London

JSON
Daily Rate Histogram in London

Daily rate distribution for jobs citing JSON in London over the 6 months to 17 January 2021.

Daily rate histogram for JSON in London

JSON
Contractor Hourly Rate Trend in London

3-month moving average hourly rates quoted in jobs citing JSON in London.

Hourly rate trend for JSON in London

JSON
Hourly Rate Histogram in London

Hourly rate distribution of jobs citing JSON in London over the 6 months to 17 January 2021.

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 17 January 2021. 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 +26 37 £525 +5.00% 24
South London +48 17 £520 -9.57% 4
West London +25 7 £425 - 15
East London +33 6 £508 -5.58% 7
North London +12 3 - -
JSON
England

For the 6 months to 17 January 2021, 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.

1 180 (51.72%) XML
2 170 (48.85%) Java
3 166 (47.70%) Agile Software Development
4 116 (33.33%) REST
5 103 (29.60%) Web Services
6 100 (28.74%) Azure
7 97 (27.87%) JavaScript
8 90 (25.86%) Microservices
9 89 (25.57%) Jenkins
10 88 (25.29%) Git (software)
11 87 (25.00%) SQL
12 84 (24.14%) RESTful
13 80 (22.99%) SOAP
13 80 (22.99%) DevOps
14 78 (22.41%) Finance
14 78 (22.41%) AWS
15 76 (21.84%) HTML
16 73 (20.98%) TDD
17 67 (19.25%) Security Cleared
18 65 (18.68%) HTTP
19 63 (18.10%) Spring
20 62 (17.82%) Data Modelling
20 62 (17.82%) Oracle
21 61 (17.53%) JIRA
22 60 (17.24%) Python
23 59 (16.95%) SC Cleared
24 58 (16.67%) SOA
25 56 (16.09%) Business Intelligence
26 54 (15.52%) Public Sector
27 53 (15.23%) Continuous Integration

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 40 (11.49%) Red Hat Fuse
2 35 (10.06%) Confluence
3 30 (8.62%) JBoss
4 26 (7.47%) WebSphere
5 21 (6.03%) Apache Spark
6 18 (5.17%) Tomcat
6 18 (5.17%) WebLogic
7 16 (4.60%) Mule
7 16 (4.60%) Oracle SOA Suite
8 15 (4.31%) Apache
8 15 (4.31%) Elasticsearch
9 11 (3.16%) MQSeries
10 10 (2.87%) Apache ServiceMix
10 10 (2.87%) BizTalk Server
10 10 (2.87%) Oracle Service Bus
11 9 (2.59%) CMS
11 9 (2.59%) SharePoint
12 8 (2.30%) Cloud Foundry
13 6 (1.72%) nginx
14 5 (1.44%) Jetty
Applications
1 7 (2.01%) Photoshop
2 4 (1.15%) Adobe XD
2 4 (1.15%) Microsoft Excel
2 4 (1.15%) Microsoft Office
3 2 (0.57%) Microsoft Project
3 2 (0.57%) MS Visio
3 2 (0.57%) Spreadsheet
4 1 (0.29%) Chatbot
4 1 (0.29%) Figma
4 1 (0.29%) Microsoft PowerPoint
Business Applications
1 8 (2.30%) Sparx Enterprise Architect
2 7 (2.01%) Dynamics CRM
3 5 (1.44%) Dynamics NAV
4 4 (1.15%) Dynamics AX
5 2 (0.57%) BusinessWorks
6 1 (0.29%) SAP ERP
6 1 (0.29%) SAP Hybris
6 1 (0.29%) Summit
Cloud Services
1 100 (28.74%) Azure
2 78 (22.41%) AWS
3 40 (11.49%) GitHub
4 29 (8.33%) Power Platform
5 22 (6.32%) IaaS
5 22 (6.32%) PaaS
6 20 (5.75%) Amazon S3
6 20 (5.75%) PowerApps
7 18 (5.17%) Serverless
8 16 (4.60%) GCP
8 16 (4.60%) Logic Apps
9 15 (4.31%) Boomi
9 15 (4.31%) SaaS
10 14 (4.02%) Apigee
11 13 (3.74%) Power Automate
12 11 (3.16%) Amazon SQS
12 11 (3.16%) Virtual Private Cloud
13 10 (2.87%) Amazon CloudWatch
13 10 (2.87%) AWS Lambda
13 10 (2.87%) Office 365
Communications & Networking
1 65 (18.68%) HTTP
2 7 (2.01%) TCP/IP
3 5 (1.44%) Firewall
3 5 (1.44%) Internet
3 5 (1.44%) LAN
3 5 (1.44%) Network Security
3 5 (1.44%) WAN
4 4 (1.15%) DVB
4 4 (1.15%) SSH
5 3 (0.86%) F5 BIG-IP GTM
5 3 (0.86%) HTTPS
6 2 (0.57%) Extranet
6 2 (0.57%) Intranet
6 2 (0.57%) Software-Defined Networking
7 1 (0.29%) 3GPP
7 1 (0.29%) DNS
7 1 (0.29%) Ethernet
7 1 (0.29%) FTP
7 1 (0.29%) MPLS
7 1 (0.29%) SSL
Database & Business Intelligence
1 48 (13.79%) SQL Server
2 36 (10.34%) PostgreSQL
3 29 (8.33%) Relational Database
4 25 (7.18%) MongoDB
4 25 (7.18%) NoSQL
5 23 (6.61%) MySQL
6 20 (5.75%) Data Warehouse
7 19 (5.46%) Hadoop
8 16 (4.60%) Power BI
9 15 (4.31%) RDBMS
10 13 (3.74%) Big Data
11 11 (3.16%) Azure SQL Database
12 10 (2.87%) Oracle Database
13 9 (2.59%) Apache Hive
13 9 (2.59%) Parquet
14 8 (2.30%) Apache Cassandra
14 8 (2.30%) OLTP
14 8 (2.30%) Tableau
15 7 (2.01%) Cosmos DB
15 7 (2.01%) Data Lake
Development Applications
1 89 (25.57%) Jenkins
2 88 (25.29%) Git (software)
3 61 (17.53%) JIRA
4 42 (12.07%) JUnit
5 29 (8.33%) Maven
6 23 (6.61%) Mockito
7 22 (6.32%) Gradle
8 20 (5.75%) SonarQube
9 17 (4.89%) Cucumber
10 16 (4.60%) Selenium
11 14 (4.02%) Ant
12 13 (3.74%) Eclipse
12 13 (3.74%) IntelliJ
13 12 (3.45%) TeamCity
14 11 (3.16%) Atlassian Bamboo
14 11 (3.16%) JMeter
14 11 (3.16%) Sonatype Nexus
14 11 (3.16%) Visual Studio
15 10 (2.87%) Xcode
16 9 (2.59%) Vagrant
General
1 78 (22.41%) Finance
2 54 (15.52%) Public Sector
3 34 (9.77%) Banking
4 30 (8.62%) Marketing
5 26 (7.47%) Electronics
6 24 (6.90%) Manufacturing
6 24 (6.90%) Telecoms
7 8 (2.30%) Retail
8 7 (2.01%) Advertising
9 6 (1.72%) Law
10 4 (1.15%) Police
11 3 (0.86%) Retail Banking
12 2 (0.57%) French Language
12 2 (0.57%) Investment Banking
12 2 (0.57%) Pharmaceutical
12 2 (0.57%) Publishing
13 1 (0.29%) Financial Institution
13 1 (0.29%) Front Office
13 1 (0.29%) Legal
13 1 (0.29%) Private Banking
Job Titles
1 159 (45.69%) Developer
2 78 (22.41%) Architect
3 63 (18.10%) Java Developer
4 26 (7.47%) Solutions Architect
5 24 (6.90%) Senior Developer
6 23 (6.61%) Integration Developer
7 19 (5.46%) Data Engineer
8 18 (5.17%) Integration Architect
9 17 (4.89%) DevOps Engineer
10 16 (4.60%) Senior Java Developer
11 15 (4.31%) SC Cleared Java Developer
12 14 (4.02%) Lead Developer
12 14 (4.02%) Senior Integration Developer
13 13 (3.74%) Consultant
14 12 (3.45%) React Developer
15 11 (3.16%) Azure Engineer
15 11 (3.16%) Data Architect
15 11 (3.16%) Software Engineer
16 10 (2.87%) Front End Developer (Client-Side Developer)
16 10 (2.87%) Lead Java Developer
Libraries, Frameworks & Software Standards
1 180 (51.72%) XML
2 116 (33.33%) REST
3 103 (29.60%) Web Services
4 84 (24.14%) RESTful
5 80 (22.99%) SOAP
6 76 (21.84%) HTML
7 63 (18.10%) Spring
8 49 (14.08%) XSLT
9 47 (13.51%) CSS
10 45 (12.93%) .NET
11 43 (12.36%) Middleware
12 42 (12.07%) Apache Camel
13 41 (11.78%) Spring Boot
14 39 (11.21%) HTML5
15 35 (10.06%) Node.js
16 28 (8.05%) React
17 27 (7.76%) jQuery
18 25 (7.18%) Kafka
19 24 (6.90%) RabbitMQ
20 23 (6.61%) XSD
Miscellaneous
1 29 (8.33%) Mobile App
2 22 (6.32%) User Experience
3 20 (5.75%) Enterprise Software
4 18 (5.17%) Data Structures
5 13 (3.74%) iPad
6 12 (3.45%) Public Cloud
7 11 (3.16%) Analytical Skills
8 9 (2.59%) Mobile Payment
8 9 (2.59%) W3C
9 7 (2.01%) Linux Command Line
9 7 (2.01%) Self-Motivation
10 6 (1.72%) iPhone
10 6 (1.72%) Private Cloud
10 6 (1.72%) Virtual Team
11 5 (1.44%) Cloud Native
11 5 (1.44%) Management Information System
11 5 (1.44%) Video\Live Streaming
12 4 (1.15%) Digital TV
12 4 (1.15%) STB
12 4 (1.15%) VSAM
Operating Systems
1 42 (12.07%) Linux
2 20 (5.75%) Android
3 15 (4.31%) Apple iOS
3 15 (4.31%) Unix
4 14 (4.02%) Windows
5 10 (2.87%) Red Hat Enterprise Linux
6 9 (2.59%) Mac OS X
7 6 (1.72%) Debian
8 5 (1.44%) Ubuntu
9 3 (0.86%) Amazon Linux
9 3 (0.86%) CentOS
9 3 (0.86%) CoreOS
9 3 (0.86%) VMS
10 1 (0.29%) Solaris
10 1 (0.29%) Tizen
10 1 (0.29%) Windows 10
10 1 (0.29%) Windows 7
10 1 (0.29%) Windows 8
10 1 (0.29%) Windows Server
10 1 (0.29%) Windows Server 2012
Processes & Methodologies
1 166 (47.70%) Agile Software Development
2 90 (25.86%) Microservices
3 80 (22.99%) DevOps
4 73 (20.98%) TDD
5 62 (17.82%) Data Modelling
6 58 (16.67%) SOA
7 56 (16.09%) Business Intelligence
8 53 (15.23%) Continuous Integration
9 46 (13.22%) Scrum
10 44 (12.64%) Continuous Delivery
11 43 (12.36%) Test Automation
12 32 (9.20%) API Development
13 29 (8.33%) Waterfall
14 26 (7.47%) Digital Marketing
15 24 (6.90%) MVC
15 24 (6.90%) Programme Management
15 24 (6.90%) Software Engineering
16 23 (6.61%) Mentoring
17 22 (6.32%) ETL
17 22 (6.32%) Migration
Programming Languages
1 170 (48.85%) Java
2 97 (27.87%) JavaScript
3 87 (25.00%) SQL
4 60 (17.24%) Python
5 41 (11.78%) C#
6 30 (8.62%) Kotlin
7 25 (7.18%) XPath
8 22 (6.32%) PowerShell
8 22 (6.32%) T-SQL
9 17 (4.89%) C++
9 17 (4.89%) PL/SQL
10 15 (4.31%) Apple Swift
10 15 (4.31%) Bash Shell
11 14 (4.02%) Scala
11 14 (4.02%) Shell Script
12 10 (2.87%) PHP
13 9 (2.59%) C
14 8 (2.30%) Java 8
15 6 (1.72%) Ruby
16 5 (1.44%) Groovy
Qualifications
1 67 (19.25%) Security Cleared
2 59 (16.95%) SC Cleared
3 10 (2.87%) Degree
4 8 (2.30%) AWS Certification
5 7 (2.01%) TOGAF Certification
6 6 (1.72%) Computer Science Degree
7 3 (0.86%) DV Cleared
8 2 (0.57%) CCIE
8 2 (0.57%) Cisco Certification
9 1 (0.29%) BPSS Clearance
9 1 (0.29%) CCDP
9 1 (0.29%) CCNP
Quality Assurance & Compliance
1 19 (5.46%) QA
2 3 (0.86%) GDPR
3 2 (0.57%) ISO 20022
4 1 (0.29%) ISO/IEC 27001
4 1 (0.29%) NIST
4 1 (0.29%) NIST 800
4 1 (0.29%) OASIS TOSCA
4 1 (0.29%) SEPA
4 1 (0.29%) TARGET2
System Software
1 47 (13.51%) Docker
2 9 (2.59%) HDFS
3 2 (0.57%) Apache ZooKeeper
3 2 (0.57%) LXC
4 1 (0.29%) Active Directory
4 1 (0.29%) KVM
4 1 (0.29%) Virtual Machines
4 1 (0.29%) VMware ESXi
4 1 (0.29%) VMware Infrastructure
4 1 (0.29%) VMware NSX
Systems Management
1 43 (12.36%) Kubernetes
2 29 (8.33%) Ansible
3 27 (7.76%) Terraform
4 10 (2.87%) Grafana
4 10 (2.87%) Puppet
5 7 (2.01%) Docker Swarm
5 7 (2.01%) Prometheus
6 5 (1.44%) Hadoop YARN
7 4 (1.15%) Mesos
7 4 (1.15%) Packer
8 3 (0.86%) Consul
8 3 (0.86%) Forum Sentry
8 3 (0.86%) Kibana
8 3 (0.86%) Salt
9 2 (0.57%) Marathon
9 2 (0.57%) Oozie
9 2 (0.57%) Opscode Chef
9 2 (0.57%) Rancher
10 1 (0.29%) FortiGate
10 1 (0.29%) Juju
Vendors
1 62 (17.82%) Oracle
2 46 (13.22%) Microsoft
3 29 (8.33%) Red Hat
3 29 (8.33%) SAP
4 27 (7.76%) MuleSoft
5 23 (6.61%) Google
6 19 (5.46%) Axway
7 18 (5.17%) webMethods
8 17 (4.89%) Salesforce.com
8 17 (4.89%) Talend
8 17 (4.89%) TIBCO
9 15 (4.31%) Atlassian
9 15 (4.31%) Dell
10 10 (2.87%) Fiorano
10 10 (2.87%) Jitterbit
10 10 (2.87%) WSO2
11 8 (2.30%) Adobe
11 8 (2.30%) Sparx
11 8 (2.30%) Splunk
12 7 (2.01%) Cisco