Period
to 17 April 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 17 April 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
17 Apr 2021
Same period 2020 Same period 2019
Rank 139 139 96
Rank change year-on-year 0 -43 +11
Contract jobs citing JSON 999 1,070 2,448
As % of all contract jobs advertised in the UK 1.88% 1.84% 2.55%
As % of the Libraries, Frameworks & Software Standards category 6.22% 6.14% 7.77%
Number of daily rates quoted 666 624 1,534
10th Percentile £319 £339 £350
25th Percentile £388 £400 £407
Median daily rate (50th Percentile) £475 £475 £490
Median % change year-on-year - -3.06% +3.16%
75th Percentile £550 £559 £563
90th Percentile £639 £636 £621
UK excluding London median daily rate £420 £450 £450
% change year-on-year -6.67% - -
Number of hourly rates quoted 21 14 17
10th Percentile " £20.58 £21.35
25th Percentile £25.50 £44.43 £52.50
Median hourly rate £55.00 £50.50 £55.00
Median % change year-on-year +8.91% -8.18% +22.22%
75th Percentile £58.00 £56.82 £60.00
90th Percentile £68.00 £68.75 £61.28
UK excluding London median hourly rate £50.72 £51.75 £55.00
% change year-on-year -1.99% -5.91% +22.22%

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 16,065 17,436 31,513
As % of all contract IT jobs advertised in the UK 30.24% 30.06% 32.83%
Number of daily rates quoted 11,488 12,272 22,521
10th Percentile £328 £331 £325
25th Percentile £405 £410 £400
Median daily rate (50th Percentile) £500 £500 £488
Median % change year-on-year - +2.56% +2.63%
75th Percentile £588 £580 £575
90th Percentile £675 £663 £638
UK excluding London median daily rate £425 £450 £438
% change year-on-year -5.56% +2.86% +6.06%
Number of hourly rates quoted 187 165 285
10th Percentile £23.90 £17.85 £17.70
25th Percentile £34.00 £26.50 £27.50
Median hourly rate £45.00 £45.00 £43.50
Median % change year-on-year - +3.45% +6.10%
75th Percentile £57.00 £53.28 £52.50
90th Percentile £65.00 £69.50 £60.00
UK excluding London median hourly rate £45.00 £43.50 £42.50
% change year-on-year +3.45% +2.35% +3.66%

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 17 April 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 17 April 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 17 April 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 +3 818 £475 -2.81% 316
London +4 452 £500 - 122
UK excluding London +10 377 £420 -6.67% 210
Work from Home -34 338 £473 -5.50% 71
North of England +29 97 £413 -4.62% 71
South East +31 93 £400 -13.76% 45
Midlands -2 64 £383 -7.15% 32
West Midlands +27 59 £383 -8.54% 22
Yorkshire +28 51 £425 -10.53% 25
Scotland -5 44 £421 -0.88% 12
East of England +35 33 £525 - 24
North West +24 33 £375 -16.67% 43
South West +23 32 £438 - 22
North East +19 14 £519 +25.76% 3
Northern Ireland +5 14 £431 -4.43%
East Midlands -11 5 £395 +5.33% 10
Wales +16 1 £400 -13.51% 4

For the 6 months to 17 April 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.

1 448 (44.84%) Agile Software Development
2 446 (44.64%) XML
3 380 (38.04%) Java
4 332 (33.23%) SQL
5 296 (29.63%) Azure
6 284 (28.43%) REST
7 273 (27.33%) Git (software)
8 268 (26.83%) JavaScript
9 254 (25.43%) Jenkins
10 241 (24.12%) HTML
11 232 (23.22%) DevOps
12 228 (22.82%) Web Services
13 215 (21.52%) RESTful
14 192 (19.22%) Microservices
15 190 (19.02%) AWS
16 187 (18.72%) Python
17 186 (18.62%) SOAP
18 182 (18.22%) CSS
19 178 (17.82%) Finance
20 172 (17.22%) Test Automation
21 165 (16.52%) JIRA
22 151 (15.12%) Oracle
23 149 (14.91%) Docker
24 143 (14.31%) Spring
25 133 (13.31%) Linux
25 133 (13.31%) Kubernetes
26 132 (13.21%) TDD
27 130 (13.01%) Continuous Integration
28 129 (12.91%) Scrum
29 123 (12.31%) SQL Server

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 95 (9.51%) Confluence
2 49 (4.90%) WebLogic
3 41 (4.10%) Apache Spark
4 32 (3.20%) JBoss
5 31 (3.10%) Red Hat Fuse
6 28 (2.80%) WebSphere
7 26 (2.60%) Apache
8 24 (2.40%) CMS
9 23 (2.30%) Tomcat
10 21 (2.10%) OpenStack
11 20 (2.00%) Elasticsearch
12 19 (1.90%) SharePoint
13 17 (1.70%) Mule
14 16 (1.60%) MQSeries
15 15 (1.50%) Oracle SOA Suite
16 14 (1.40%) BizTalk Server
16 14 (1.40%) Jadu
17 13 (1.30%) Anypoint
17 13 (1.30%) Cloud Foundry
18 9 (0.90%) Ethereum
Applications
1 22 (2.20%) Chatbot
2 12 (1.20%) Microsoft Office
3 10 (1.00%) Photoshop
4 7 (0.70%) Microsoft Excel
5 3 (0.30%) Microsoft PowerPoint
5 3 (0.30%) MS Visio
6 1 (0.10%) Adobe XD
6 1 (0.10%) Fusion 360
6 1 (0.10%) Microsoft Project
6 1 (0.10%) Spreadsheet
Business Applications
1 15 (1.50%) Sparx Enterprise Architect
2 13 (1.30%) SAP FI-CA
2 13 (1.30%) SAP PSCD
3 8 (0.80%) Distributed Ledger
4 7 (0.70%) Dynamics CRM
5 4 (0.40%) BusinessWorks
5 4 (0.40%) Magento
5 4 (0.40%) Oracle ERP
6 3 (0.30%) Minerva
6 3 (0.30%) SAP CRM
6 3 (0.30%) SAP TEM
6 3 (0.30%) Summit
7 2 (0.20%) Payment Gateway
7 2 (0.20%) SAP Hybris
8 1 (0.10%) Dynamics AX
8 1 (0.10%) Dynamics NAV
8 1 (0.10%) Oracle BPM
8 1 (0.10%) Salesforce.com CRM
8 1 (0.10%) Sentinel
8 1 (0.10%) TIBCO iProcess
Cloud Services
1 296 (29.63%) Azure
2 190 (19.02%) AWS
3 108 (10.81%) GitHub
4 67 (6.71%) IaaS
5 62 (6.21%) PaaS
6 51 (5.11%) Amazon S3
6 51 (5.11%) Power Platform
7 50 (5.01%) Serverless
8 49 (4.90%) GCP
9 34 (3.40%) SaaS
10 33 (3.30%) Google Analytics
10 33 (3.30%) Logic Apps
11 30 (3.00%) Azure Data Factory
12 29 (2.90%) OpenShift
13 28 (2.80%) PowerApps
14 21 (2.10%) Amazon ECS
14 21 (2.10%) AWS Lambda
15 20 (2.00%) Cloud Computing
16 19 (1.90%) Boomi
16 19 (1.90%) Slack
Communications & Networking
1 82 (8.21%) HTTP
2 20 (2.00%) TCP/IP
3 19 (1.90%) Internet
4 17 (1.70%) 3GPP
4 17 (1.70%) HTTPS
4 17 (1.70%) SGSN
4 17 (1.70%) Software-Defined Networking
5 15 (1.50%) SSH
6 14 (1.40%) VSAN
7 12 (1.20%) Firewall
7 12 (1.20%) LAN
8 11 (1.10%) DNS
8 11 (1.10%) SSL
9 10 (1.00%) Remote Desktop
9 10 (1.00%) WAN
10 8 (0.80%) IPFS
11 7 (0.70%) FTP
11 7 (0.70%) RTMP
12 5 (0.50%) IPv4
12 5 (0.50%) IPv6
Database & Business Intelligence
1 123 (12.31%) SQL Server
2 94 (9.41%) Relational Database
3 92 (9.21%) PostgreSQL
4 69 (6.91%) NoSQL
5 60 (6.01%) MySQL
6 52 (5.21%) Data Warehouse
7 49 (4.90%) MongoDB
8 43 (4.30%) Oracle Database
8 43 (4.30%) RDBMS
9 33 (3.30%) Cosmos DB
10 31 (3.10%) Hadoop
10 31 (3.10%) Power BI
11 29 (2.90%) Big Data
11 29 (2.90%) SQL Server Integration Services
12 26 (2.60%) Tableau
13 23 (2.30%) Azure SQL Database
14 20 (2.00%) Parquet
15 19 (1.90%) DB2
15 19 (1.90%) Snowflake Schema
16 18 (1.80%) Apache Hive
Development Applications
1 273 (27.33%) Git (software)
2 254 (25.43%) Jenkins
3 165 (16.52%) JIRA
4 97 (9.71%) Maven
5 82 (8.21%) JUnit
6 59 (5.91%) Selenium
7 50 (5.01%) Cucumber
8 47 (4.70%) Visual Studio
9 44 (4.40%) Gradle
9 44 (4.40%) Postman
9 44 (4.40%) Sonatype Nexus
10 38 (3.80%) Eclipse
11 37 (3.70%) Xcode
12 35 (3.50%) SoapUI
13 32 (3.20%) GitLab
14 26 (2.60%) Android Studio
15 25 (2.50%) IntelliJ
15 25 (2.50%) JMeter
15 25 (2.50%) Team Foundation Server
16 24 (2.40%) Mockito
General
1 178 (17.82%) Finance
2 96 (9.61%) Public Sector
3 61 (6.11%) Banking
4 42 (4.20%) Telecoms
5 34 (3.40%) Marketing
6 30 (3.00%) Manufacturing
7 23 (2.30%) Law
8 22 (2.20%) Electronics
9 13 (1.30%) Local Government
9 13 (1.30%) Retail
10 9 (0.90%) Investment Banking
10 9 (0.90%) Publishing
11 7 (0.70%) Legal
11 7 (0.70%) Pharmaceutical
12 5 (0.50%) Back Office
13 4 (0.40%) Advertising
13 4 (0.40%) French Language
13 4 (0.40%) Retail Banking
14 3 (0.30%) Front Office
14 3 (0.30%) Games
Job Titles
1 463 (46.35%) Developer
2 131 (13.11%) Java Developer
3 128 (12.81%) Architect
4 68 (6.81%) Senior Developer
5 56 (5.61%) Analyst
6 50 (5.01%) Data Engineer
7 48 (4.80%) Front End Developer (Client-Side Developer)
8 47 (4.70%) DevOps Engineer
9 45 (4.50%) Azure Engineer
10 39 (3.90%) Solutions Architect
11 38 (3.80%) Senior Java Developer
12 35 (3.50%) Full Stack Developer
13 32 (3.20%) Cloud Engineer
13 32 (3.20%) iOS Developer
14 31 (3.10%) .NET Developer
15 30 (3.00%) Consultant
16 29 (2.90%) C# Developer
17 26 (2.60%) Data Architect
17 26 (2.60%) Tester
18 25 (2.50%) Integration Developer
Libraries, Frameworks & Software Standards
1 446 (44.64%) XML
2 284 (28.43%) REST
3 241 (24.12%) HTML
4 228 (22.82%) Web Services
5 215 (21.52%) RESTful
6 186 (18.62%) SOAP
7 182 (18.22%) CSS
8 143 (14.31%) Spring
9 113 (11.31%) .NET
10 104 (10.41%) Node.js
11 98 (9.81%) HTML5
12 88 (8.81%) React
13 84 (8.41%) YAML
14 82 (8.21%) Spring Boot
15 70 (7.01%) AngularJS
16 62 (6.21%) Kafka
17 60 (6.01%) XSLT
18 55 (5.51%) CSS3
18 55 (5.51%) jQuery
19 53 (5.31%) J2EE
Miscellaneous
1 71 (7.11%) User Experience
2 58 (5.81%) Mobile App
3 55 (5.51%) Analytical Skills
4 37 (3.70%) Data Structures
5 34 (3.40%) Data Centre
6 31 (3.10%) Linux Command Line
7 28 (2.80%) Enterprise Software
8 27 (2.70%) Cloud Native
8 27 (2.70%) Public Cloud
9 26 (2.60%) Derivative
10 19 (1.90%) Greenfield Project
11 18 (1.80%) iPad
12 15 (1.50%) Animation
13 13 (1.30%) Reference Data
14 12 (1.20%) Client/Server
14 12 (1.20%) iPhone
14 12 (1.20%) Social Media
14 12 (1.20%) W3C
15 10 (1.00%) PKI
16 9 (0.90%) Clustering
Operating Systems
1 133 (13.31%) Linux
2 100 (10.01%) Windows
3 77 (7.71%) Unix
4 62 (6.21%) Apple iOS
5 53 (5.31%) Android
6 15 (1.50%) Windows Server
7 13 (1.30%) Ubuntu
8 10 (1.00%) Debian
8 10 (1.00%) Mac OS X
8 10 (1.00%) Red Hat Enterprise Linux
9 9 (0.90%) CentOS
9 9 (0.90%) Mac OS
10 7 (0.70%) VMS
11 6 (0.60%) CoreOS
12 4 (0.40%) Windows 10
12 4 (0.40%) Windows Server 2012
13 3 (0.30%) Solaris
14 2 (0.20%) Windows Server 2008
15 1 (0.10%) AIX
15 1 (0.10%) Amazon Linux
Processes & Methodologies
1 448 (44.84%) Agile Software Development
2 232 (23.22%) DevOps
3 192 (19.22%) Microservices
4 172 (17.22%) Test Automation
5 132 (13.21%) TDD
6 130 (13.01%) Continuous Integration
7 129 (12.91%) Scrum
8 93 (9.31%) SOA
9 92 (9.21%) Business Intelligence
10 88 (8.81%) Data Modelling
11 76 (7.61%) Problem-Solving
12 73 (7.31%) OO
13 70 (7.01%) MVC
14 65 (6.51%) Analytics
15 62 (6.21%) Front End Development
15 62 (6.21%) Software Engineering
15 62 (6.21%) Unit Testing
16 61 (6.11%) Waterfall
17 60 (6.01%) Migration
18 57 (5.71%) BDD
Programming Languages
1 380 (38.04%) Java
2 332 (33.23%) SQL
3 268 (26.83%) JavaScript
4 187 (18.72%) Python
5 122 (12.21%) C#
6 84 (8.41%) PL/SQL
7 82 (8.21%) PowerShell
8 68 (6.81%) Java 8
9 57 (5.71%) Bash Shell
10 45 (4.50%) Apple Swift
10 45 (4.50%) C++
11 43 (4.30%) PHP
12 39 (3.90%) Kotlin
12 39 (3.90%) Scala
12 39 (3.90%) Shell Script
13 38 (3.80%) T-SQL
14 30 (3.00%) TypeScript
15 22 (2.20%) C
15 22 (2.20%) Ruby
15 22 (2.20%) XPath
Qualifications
1 121 (12.11%) Security Cleared
2 95 (9.51%) SC Cleared
3 41 (4.10%) Degree
4 22 (2.20%) Computer Science Degree
5 16 (1.60%) ISTQB
5 16 (1.60%) ISTQB Foundation Certification
6 14 (1.40%) DV Cleared
6 14 (1.40%) ISEB
7 8 (0.80%) AWS Certification
7 8 (0.80%) CISM
7 8 (0.80%) CISSP
7 8 (0.80%) GIAC
8 6 (0.60%) CISA
9 4 (0.40%) Master's Degree
10 3 (0.30%) Cisco Certification
11 2 (0.20%) BPSS Clearance
11 2 (0.20%) SANS
11 2 (0.20%) VCP6
11 2 (0.20%) VMware Certified Professional (VCP)
12 1 (0.10%) TOGAF Certification
Quality Assurance & Compliance
1 77 (7.71%) QA
2 18 (1.80%) GDPR
3 17 (1.70%) OASIS TOSCA
4 14 (1.40%) WCAG
5 6 (0.60%) Data Quality
5 6 (0.60%) NIST
6 4 (0.40%) HL7
7 3 (0.30%) Actionable Recommendations
7 3 (0.30%) SLA
8 2 (0.20%) HIPAA
8 2 (0.20%) ISO 9000
8 2 (0.20%) PCI DSS
8 2 (0.20%) RMADS
8 2 (0.20%) Sarbanes-Oxley
9 1 (0.10%) ISO 20022
9 1 (0.10%) SEPA
9 1 (0.10%) TARGET2
System Software
1 149 (14.91%) Docker
2 28 (2.80%) VMware ESXi
3 19 (1.90%) LXC
4 17 (1.70%) Active Directory
4 17 (1.70%) KVM
4 17 (1.70%) VMware Infrastructure
5 13 (1.30%) HDFS
6 12 (1.20%) VMware NSX
7 11 (1.10%) vSphere
8 7 (0.70%) Virtual Machines
9 4 (0.40%) Hyper-V
10 3 (0.30%) Apache ZooKeeper
10 3 (0.30%) Firmware
11 2 (0.20%) NFS
11 2 (0.20%) vCloud
12 1 (0.10%) VMware Server
Systems Management
1 133 (13.31%) Kubernetes
2 100 (10.01%) Ansible
3 67 (6.71%) Terraform
4 38 (3.80%) Grafana
5 28 (2.80%) Puppet
6 23 (2.30%) Docker Swarm
7 22 (2.20%) Prometheus
8 17 (1.70%) Cloudify
8 17 (1.70%) Juju
9 14 (1.40%) vRealize
10 13 (1.30%) Opscode Chef
11 11 (1.10%) vCenter Server
12 10 (1.00%) PowerCLI
13 8 (0.80%) Kibana
14 7 (0.70%) Istio
15 5 (0.50%) Packer
15 5 (0.50%) Rancher
15 5 (0.50%) Red Hat Satellite
16 4 (0.40%) Mesos
16 4 (0.40%) SCVMM
Vendors
1 151 (15.12%) Oracle
2 114 (11.41%) Microsoft
3 64 (6.41%) SAP
4 63 (6.31%) Google
5 59 (5.91%) Red Hat
6 38 (3.80%) MuleSoft
7 35 (3.50%) webMethods
8 33 (3.30%) Dell
9 31 (3.10%) Splunk
10 27 (2.70%) Cisco
11 24 (2.40%) Salesforce.com
12 23 (2.30%) VMware
13 21 (2.10%) HP
13 21 (2.10%) ServiceNow
14 20 (2.00%) Informatica
15 19 (1.90%) Adobe
15 19 (1.90%) Axway
15 19 (1.90%) Databricks
15 19 (1.90%) Sparx
16 18 (1.80%) BEA