Period
to 22 January 2021

The following table provides summary statistics for contract job vacancies 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 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
UK
6 months to
22 Jan 2021
Same period 2020 Same period 2019
Rank 116 125 98
Rank change year-on-year +9 -27 +3
Contract jobs citing JSON 907 1,470 2,532
As % of all contract jobs advertised in the UK 2.15% 2.02% 2.54%
As % of the Libraries, Frameworks & Software Standards category 7.08% 6.72% 7.43%
Number of daily rates quoted 818 945 1,684
Median daily rate £450 £475 £475
Median daily rate % change year-on-year -5.26% - +5.56%
10th Percentile £325 £327 £350
90th Percentile £600 £625 £625
UK excluding London median daily rate £429 £450 £450
% change year-on-year -4.67% - +1.12%
Number of hourly rates quoted 23 12 11
Median hourly rate £51.00 £49.68 £35.00
Median hourly rate % change year-on-year +2.67% +41.93% -7.89%
10th Percentile £21.75 £16.00 £21.25
90th Percentile £66.00 £53.70 £60.85
UK excluding London median hourly rate £51.75 £50.50 £35.00
% change year-on-year +2.48% +44.29% -2.93%

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 with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
UK
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 12,817 21,866 34,077
As % of all contract IT jobs advertised in the UK 30.43% 30.09% 34.19%
Number of daily rates quoted 9,000 15,354 24,280
Median daily rate £480 £495 £480
Median daily rate % change year-on-year -3.03% +3.13% +3.78%
10th Percentile £315 £330 £325
90th Percentile £663 £650 £638
UK excluding London median daily rate £425 £449 £425
% change year-on-year -5.24% +5.53% +6.25%
Number of hourly rates quoted 153 198 272
Median hourly rate £45.00 £46.00 £41.85
Median hourly rate % change year-on-year -2.17% +9.93% +5.94%
10th Percentile £25.00 £16.92 £17.50
90th Percentile £63.65 £78.75 £60.00
Median hourly rate £45.00 £45.00 £41.69
% change year-on-year - +7.95% +4.22%

JSON
Job Vacancy Trend

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

Job vacancy trend for JSON in the UK

JSON
Contractor Daily Rate Trend

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

Daily rate trend for JSON in the UK

JSON
Daily Rate Histogram

Daily rate distribution for jobs citing JSON over the 6 months to 22 January 2021.

Daily rate histogram for JSON in the UK

JSON
Contractor Hourly Rate Trend

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

Hourly rate trend for JSON in the UK

JSON
Hourly Rate Histogram

Hourly rate distribution of jobs citing JSON over the 6 months to 22 January 2021.

Hourly rate histogram for JSON in the UK

JSON
Top 17 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing JSON within the UK over the 6 months to 22 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
England +24 750 £475 - 280
UK excluding London +35 427 £429 -4.67% 206
London +1 368 £506 +1.20% 102
Work from Home -15 296 £450 -5.26% 58
North of England +63 135 £450 - 55
Midlands +32 97 £429 -4.67% 34
Yorkshire +63 93 £450 -13.46% 15
West Midlands +32 81 £428 -9.89% 22
South East +20 77 £375 -16.67% 40
Northern Ireland +30 40 £450 +9.09% 3
Scotland -26 38 £423 -6.11% 16
North West +48 33 £425 -4.23% 39
South West +36 23 £431 +1.47% 24
East of England +34 19 £505 +12.22% 24
East Midlands +19 16 £500 +42.86% 12
North East +7 10 £413 - 1
Wales +20 1 £400 -11.11% 10

For the 6 months to 22 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 with a requirement for JSON.

1 445 (49.06%) Agile Software Development
2 422 (46.53%) Java
3 394 (43.44%) XML
4 286 (31.53%) Git (software)
4 286 (31.53%) REST
5 276 (30.43%) Jenkins
6 265 (29.22%) JavaScript
7 263 (29.00%) SQL
8 219 (24.15%) DevOps
9 218 (24.04%) Microservices
10 209 (23.04%) Azure
11 206 (22.71%) HTML
12 203 (22.38%) Web Services
13 202 (22.27%) RESTful
14 191 (21.06%) JIRA
15 188 (20.73%) AWS
16 185 (20.40%) Spring
17 182 (20.07%) Test Automation
18 167 (18.41%) Python
19 163 (17.97%) SOAP
20 161 (17.75%) Scrum
21 158 (17.42%) Oracle
22 155 (17.09%) CSS
23 146 (16.10%) Finance
24 142 (15.66%) Node.js
25 141 (15.55%) Spring Boot
25 141 (15.55%) TDD
26 140 (15.44%) Security Cleared
27 133 (14.66%) Continuous Integration
28 130 (14.33%) Confluence

JSON
Co-occurring IT Skills 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
1 130 (14.33%) Confluence
2 72 (7.94%) WebLogic
3 58 (6.39%) Mule
3 58 (6.39%) Red Hat Fuse
4 49 (5.40%) JBoss
5 41 (4.52%) WebSphere
6 39 (4.30%) Cloud Foundry
7 35 (3.86%) Apache Spark
8 31 (3.42%) Tomcat
9 27 (2.98%) Apache
9 27 (2.98%) Elasticsearch
10 23 (2.54%) MQSeries
11 22 (2.43%) Oracle SOA Suite
12 17 (1.87%) OpenStack
13 16 (1.76%) BizTalk Server
14 15 (1.65%) SharePoint
15 14 (1.54%) Oracle Service Bus
16 11 (1.21%) CMS
16 11 (1.21%) IIS
16 11 (1.21%) Jadu
Applications
1 26 (2.87%) Microsoft Office
2 14 (1.54%) Microsoft Excel
3 10 (1.10%) Chatbot
4 8 (0.88%) Photoshop
5 4 (0.44%) Adobe XD
5 4 (0.44%) MS Visio
5 4 (0.44%) Spreadsheet
6 2 (0.22%) Microsoft PowerPoint
6 2 (0.22%) Microsoft Project
7 1 (0.11%) Figma
7 1 (0.11%) Fusion 360
7 1 (0.11%) GIMP
Business Applications
1 16 (1.76%) Dynamics CRM
1 16 (1.76%) SAP FI-CA
2 14 (1.54%) Sparx Enterprise Architect
3 9 (0.99%) SAP PSCD
4 7 (0.77%) Dynamics AX
5 5 (0.55%) Dynamics NAV
6 4 (0.44%) BusinessWorks
6 4 (0.44%) Oracle ERP
6 4 (0.44%) Payment Gateway
6 4 (0.44%) SAP Hybris
7 3 (0.33%) Magento
7 3 (0.33%) Minerva
7 3 (0.33%) SAP TEM
8 2 (0.22%) Distributed Ledger
8 2 (0.22%) Summit
9 1 (0.11%) Oracle Applications
9 1 (0.11%) Oracle BPM
9 1 (0.11%) Salesforce.com CRM
9 1 (0.11%) SAP CRM
9 1 (0.11%) SAP S/4HANA
Cloud Services
1 209 (23.04%) Azure
2 188 (20.73%) AWS
3 124 (13.67%) GitHub
4 63 (6.95%) IaaS
5 61 (6.73%) PaaS
6 54 (5.95%) Slack
7 51 (5.62%) Power Platform
8 40 (4.41%) Amazon S3
9 37 (4.08%) Serverless
10 29 (3.20%) PowerApps
11 26 (2.87%) SaaS
12 25 (2.76%) Google Analytics
13 24 (2.65%) Logic Apps
14 23 (2.54%) Amazon ECS
14 23 (2.54%) Apigee
14 23 (2.54%) GCP
15 20 (2.21%) Amazon SQS
15 20 (2.21%) Azure Data Factory
16 17 (1.87%) Boomi
16 17 (1.87%) Power Automate
Communications & Networking
1 100 (11.03%) HTTP
2 24 (2.65%) TCP/IP
3 19 (2.09%) Internet
4 18 (1.98%) SSL
5 14 (1.54%) Remote Desktop
6 13 (1.43%) LAN
6 13 (1.43%) SSH
7 11 (1.21%) F5 BIG-IP GTM
7 11 (1.21%) Software-Defined Networking
7 11 (1.21%) WAN
8 8 (0.88%) 3GPP
8 8 (0.88%) Ethernet
8 8 (0.88%) Firewall
8 8 (0.88%) Network Security
8 8 (0.88%) SGSN
9 7 (0.77%) VSAN
10 5 (0.55%) DNS
11 4 (0.44%) DWDM
11 4 (0.44%) HTTPS
11 4 (0.44%) SONET
Database & Business Intelligence
1 108 (11.91%) PostgreSQL
1 108 (11.91%) SQL Server
2 72 (7.94%) Relational Database
3 69 (7.61%) MongoDB
4 65 (7.17%) NoSQL
5 62 (6.84%) MySQL
6 45 (4.96%) Oracle Database
7 42 (4.63%) Hadoop
8 36 (3.97%) Data Warehouse
9 35 (3.86%) Power BI
10 26 (2.87%) RDBMS
11 24 (2.65%) Cosmos DB
12 23 (2.54%) Azure SQL Database
13 20 (2.21%) Tableau
14 19 (2.09%) Big Data
15 18 (1.98%) Apache Hive
15 18 (1.98%) SQL Server Integration Services
16 14 (1.54%) Amazon DynamoDB
16 14 (1.54%) Parquet
17 13 (1.43%) DB2
Development Applications
1 286 (31.53%) Git (software)
2 276 (30.43%) Jenkins
3 191 (21.06%) JIRA
4 124 (13.67%) Maven
5 107 (11.80%) JUnit
6 73 (8.05%) Sonatype Nexus
7 70 (7.72%) Selenium
8 65 (7.17%) Cucumber
9 63 (6.95%) Android Studio
10 60 (6.62%) Mockito
10 60 (6.62%) Xcode
11 50 (5.51%) IntelliJ
12 49 (5.40%) CocoaPods
13 47 (5.18%) Gradle
14 39 (4.30%) Postman
15 36 (3.97%) SoapUI
16 34 (3.75%) JMeter
17 33 (3.64%) Eclipse
18 30 (3.31%) Visual Studio
19 29 (3.20%) GitLab
General
1 146 (16.10%) Finance
2 118 (13.01%) Public Sector
3 69 (7.61%) Banking
4 44 (4.85%) Telecoms
5 36 (3.97%) Marketing
6 33 (3.64%) Manufacturing
7 32 (3.53%) Electronics
8 17 (1.87%) Law
8 17 (1.87%) Retail
9 11 (1.21%) Local Government
10 8 (0.88%) Retail Banking
11 7 (0.77%) Advertising
11 7 (0.77%) Pharmaceutical
12 5 (0.55%) Investment Banking
13 4 (0.44%) Police
14 3 (0.33%) Front Office
14 3 (0.33%) Publishing
15 2 (0.22%) Automotive
15 2 (0.22%) French Language
15 2 (0.22%) Legal
Job Titles
1 438 (48.29%) Developer
2 151 (16.65%) Java Developer
3 128 (14.11%) Architect
4 58 (6.39%) Senior Developer
5 50 (5.51%) Data Engineer
6 45 (4.96%) Senior Java Developer
7 43 (4.74%) Solutions Architect
8 37 (4.08%) Analyst
9 34 (3.75%) DevOps Engineer
10 32 (3.53%) Front End Developer (Client-Side Developer)
11 31 (3.42%) Azure Engineer
11 31 (3.42%) Integration Developer
12 30 (3.31%) Consultant
13 28 (3.09%) iOS Developer
14 25 (2.76%) Software Engineer
15 23 (2.54%) JavaScript Developer
15 23 (2.54%) Lead Developer
16 22 (2.43%) Android Developer
17 20 (2.21%) Angular Developer
18 19 (2.09%) .NET Developer
Libraries, Frameworks & Software Standards
1 394 (43.44%) XML
2 286 (31.53%) REST
3 206 (22.71%) HTML
4 203 (22.38%) Web Services
5 202 (22.27%) RESTful
6 185 (20.40%) Spring
7 163 (17.97%) SOAP
8 155 (17.09%) CSS
9 142 (15.66%) Node.js
10 141 (15.55%) Spring Boot
11 113 (12.46%) React
12 104 (11.47%) .NET
13 96 (10.58%) HTML5
14 82 (9.04%) Kafka
15 70 (7.72%) Apache Camel
16 66 (7.28%) XSLT
17 65 (7.17%) RabbitMQ
18 55 (6.06%) jQuery
19 51 (5.62%) J2EE
20 49 (5.40%) Middleware
Miscellaneous
1 103 (11.36%) Mobile App
2 61 (6.73%) User Experience
3 39 (4.30%) Data Structures
4 36 (3.97%) Enterprise Software
5 27 (2.98%) Analytical Skills
6 23 (2.54%) Linux Command Line
7 21 (2.32%) Data Centre
8 20 (2.21%) Derivative
9 17 (1.87%) Public Cloud
10 15 (1.65%) Cloud Native
10 15 (1.65%) iPad
11 13 (1.43%) Greenfield Project
12 12 (1.32%) Mobile Payment
12 12 (1.32%) Self-Motivation
13 11 (1.21%) Social Media
14 10 (1.10%) Animation
14 10 (1.10%) Management Information System
15 9 (0.99%) Private Cloud
15 9 (0.99%) Virtual Team
15 9 (0.99%) W3C
Operating Systems
1 126 (13.89%) Linux
2 92 (10.14%) Android
3 80 (8.82%) Apple iOS
4 71 (7.83%) Windows
5 70 (7.72%) Unix
6 41 (4.52%) Red Hat Enterprise Linux
7 24 (2.65%) Windows Server
8 15 (1.65%) Mac OS X
8 15 (1.65%) Ubuntu
8 15 (1.65%) Windows Server 2012
9 11 (1.21%) Debian
10 8 (0.88%) CentOS
11 5 (0.55%) Amazon Linux
12 4 (0.44%) Windows Server 2008
12 4 (0.44%) Windows Server 2016
13 3 (0.33%) CoreOS
13 3 (0.33%) VMS
14 2 (0.22%) Solaris
14 2 (0.22%) Windows 10
15 1 (0.11%) Windows 7
Processes & Methodologies
1 445 (49.06%) Agile Software Development
2 219 (24.15%) DevOps
3 218 (24.04%) Microservices
4 182 (20.07%) Test Automation
5 161 (17.75%) Scrum
6 141 (15.55%) TDD
7 133 (14.66%) Continuous Integration
8 102 (11.25%) Kanban
9 92 (10.14%) Business Intelligence
10 90 (9.92%) SOA
11 89 (9.81%) Data Modelling
12 87 (9.59%) Continuous Delivery
13 67 (7.39%) OO
14 66 (7.28%) Android Development
15 64 (7.06%) Analytics
16 63 (6.95%) BDD
17 61 (6.73%) Waterfall
18 59 (6.50%) API Development
18 59 (6.50%) iOS Development
18 59 (6.50%) MVC
Programming Languages
1 422 (46.53%) Java
2 265 (29.22%) JavaScript
3 263 (29.00%) SQL
4 167 (18.41%) Python
5 97 (10.69%) Java 8
6 94 (10.36%) PL/SQL
7 88 (9.70%) C#
8 84 (9.26%) Kotlin
9 69 (7.61%) Apple Swift
10 54 (5.95%) PowerShell
11 52 (5.73%) Scala
12 44 (4.85%) Shell Script
13 42 (4.63%) T-SQL
14 39 (4.30%) Bash Shell
14 39 (4.30%) C++
15 30 (3.31%) PHP
15 30 (3.31%) XPath
16 29 (3.20%) Ruby
17 25 (2.76%) ES6
18 23 (2.54%) VB.NET
Qualifications
1 140 (15.44%) Security Cleared
2 118 (13.01%) SC Cleared
3 29 (3.20%) Degree
4 16 (1.76%) Computer Science Degree
5 15 (1.65%) ISTQB
5 15 (1.65%) ISTQB Foundation Certification
6 14 (1.54%) ISEB
7 13 (1.43%) DV Cleared
8 10 (1.10%) AWS Certification
9 8 (0.88%) TOGAF Certification
10 4 (0.44%) BPSS Clearance
10 4 (0.44%) Cisco Certification
11 3 (0.33%) CISM
11 3 (0.33%) CISSP
11 3 (0.33%) GIAC
11 3 (0.33%) Master's Degree
11 3 (0.33%) SANS
12 2 (0.22%) CCIE
12 2 (0.22%) VCP6
12 2 (0.22%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 59 (6.50%) QA
2 18 (1.98%) GDPR
3 13 (1.43%) WCAG
4 12 (1.32%) OASIS TOSCA
5 3 (0.33%) HIPAA
5 3 (0.33%) ISO 20022
5 3 (0.33%) PCI DSS
5 3 (0.33%) RMADS
5 3 (0.33%) Sarbanes-Oxley
5 3 (0.33%) SLA
6 2 (0.22%) HL7
6 2 (0.22%) SEPA
6 2 (0.22%) TARGET2
7 1 (0.11%) Disclosure Scotland
7 1 (0.11%) ISO/IEC 27001
7 1 (0.11%) NIST
7 1 (0.11%) NIST 800
7 1 (0.11%) PMO
System Software
1 124 (13.67%) Docker
2 18 (1.98%) HDFS
3 16 (1.76%) VMware ESXi
4 12 (1.32%) VMware Infrastructure
5 10 (1.10%) VMware NSX
6 9 (0.99%) Active Directory
6 9 (0.99%) LXC
6 9 (0.99%) vSphere
7 8 (0.88%) KVM
8 3 (0.33%) Apache ZooKeeper
9 2 (0.22%) Firmware
9 2 (0.22%) Hyper-V
9 2 (0.22%) Virtual Machines
10 1 (0.11%) NFS
10 1 (0.11%) VMware Server
10 1 (0.11%) XenApp
Systems Management
1 90 (9.92%) Kubernetes
2 75 (8.27%) Ansible
3 44 (4.85%) Terraform
4 30 (3.31%) Grafana
5 21 (2.32%) Puppet
6 19 (2.09%) Kibana
7 14 (1.54%) Docker Swarm
7 14 (1.54%) Prometheus
8 8 (0.88%) Cloudify
8 8 (0.88%) Juju
8 8 (0.88%) Salt
9 7 (0.77%) PowerCLI
9 7 (0.77%) vCenter Server
9 7 (0.77%) vRealize
10 6 (0.66%) Rancher
11 5 (0.55%) Hadoop YARN
11 5 (0.55%) Single Sign-On
12 4 (0.44%) Mesos
12 4 (0.44%) Opscode Chef
12 4 (0.44%) Packer
Vendors
1 158 (17.42%) Oracle
2 104 (11.47%) Microsoft
3 76 (8.38%) Red Hat
4 66 (7.28%) Splunk
5 62 (6.84%) SAP
6 55 (6.06%) AppDynamics
7 49 (5.40%) webMethods
8 46 (5.07%) MuleSoft
9 45 (4.96%) Google
10 31 (3.42%) Axway
11 28 (3.09%) Adobe
12 26 (2.87%) Dell
12 26 (2.87%) WSO2
13 24 (2.65%) BEA
14 23 (2.54%) Salesforce.com
15 21 (2.32%) Databricks
15 21 (2.32%) Informatica
15 21 (2.32%) TIBCO
16 19 (2.09%) Cisco
17 18 (1.98%) Talend