Period
to 25 July 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 25 July 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
25 Jul 2021
Same period 2020 Same period 2019
Rank 142 151 104
Rank change year-on-year +9 -47 +3
Contract jobs citing JSON 1,330 665 2,202
As % of all contract jobs advertised in the UK 1.88% 1.77% 2.40%
As % of the Libraries, Frameworks & Software Standards category 6.23% 5.82% 7.51%
Number of daily rates quoted 873 419 1,413
10th Percentile £354 £350 £350
25th Percentile £419 £403 £411
Median daily rate (50th Percentile) £500 £475 £495
Median % change year-on-year +5.26% -4.04% +4.21%
75th Percentile £588 £550 £575
90th Percentile £700 £606 £638
UK excluding London median daily rate £450 £455 £450
% change year-on-year -1.10% +1.11% +2.27%
Number of hourly rates quoted 33 6 25
10th Percentile £29.35 £47.75 £52.50
25th Percentile £50.72 £50.50 £55.00
Median hourly rate £63.00 £62.75 £60.00
Median % change year-on-year +0.40% +4.58% +33.33%
75th Percentile £68.00 £68.75 "
90th Percentile £73.28 £69.38 £122.50
UK excluding London median hourly rate £59.00 £67.50 £57.50
% change year-on-year -12.59% +17.39% +27.78%

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 21,348 11,432 29,325
As % of all contract IT jobs advertised in the UK 30.17% 30.47% 31.92%
Number of daily rates quoted 15,263 8,090 20,685
10th Percentile £356 £335 £333
25th Percentile £414 £413 £406
Median daily rate (50th Percentile) £500 £500 £490
Median % change year-on-year - +2.04% +3.16%
75th Percentile £600 £588 £575
90th Percentile £694 £675 £650
UK excluding London median daily rate £450 £450 £440
% change year-on-year - +2.27% +4.14%
Number of hourly rates quoted 195 101 273
10th Percentile £15.27 £20.50 £17.63
25th Percentile £27.00 £30.00 £26.25
Median hourly rate £45.00 £45.00 £44.57
Median % change year-on-year - +0.98% +7.39%
75th Percentile £57.13 £58.00 £52.50
90th Percentile £68.59 £66.00 £60.00
UK excluding London median hourly rate £42.44 £42.75 £44.00
% change year-on-year -0.74% -2.84% +10.00%

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 25 July 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 25 July 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 25 July 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 +11 1,073 £500 - 422
London +22 572 £507 +1.35% 176
UK excluding London -10 503 £450 -1.10% 271
Work from Home -25 418 £500 +11.11% 95
South East +41 141 £467 +3.17% 43
North of England 0 122 £450 +5.26% 72
Midlands -27 77 £425 -5.56% 51
West Midlands -1 71 £425 -2.30% 31
Scotland -19 68 £436 +9.00% 16
North West -10 60 £425 +4.94% 45
East of England +4 47 £530 +0.95% 32
South West -27 46 £413 -21.43% 42
Yorkshire -15 40 £428 -22.27% 21
North East +9 22 £541 +22.26% 6
Wales -4 7 £350 -34.12% 11
Northern Ireland -19 7 £483 +20.63% 4
East Midlands -34 6 £425 -15.42% 19

For the 6 months to 25 July 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.

1 604 (45.41%) XML
2 592 (44.51%) Agile Software Development
3 476 (35.79%) SQL
4 473 (35.56%) Java
5 430 (32.33%) REST
6 427 (32.11%) Git (software)
7 395 (29.70%) Azure
8 378 (28.42%) Jenkins
9 368 (27.67%) JavaScript
10 313 (23.53%) DevOps
11 299 (22.48%) HTML
12 288 (21.65%) Python
13 286 (21.50%) Social Skills
14 264 (19.85%) SOAP
15 261 (19.62%) Web Services
16 247 (18.57%) Finance
17 245 (18.42%) AWS
17 245 (18.42%) Microservices
18 238 (17.89%) Linux
19 216 (16.24%) CSS
20 215 (16.17%) RESTful
21 214 (16.09%) Test Automation
21 214 (16.09%) Oracle
22 207 (15.56%) JIRA
23 205 (15.41%) Windows
24 203 (15.26%) C#
25 201 (15.11%) Spring
26 188 (14.14%) .NET
27 169 (12.71%) GitHub
28 164 (12.33%) Maven

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
1 120 (9.02%) Confluence
2 60 (4.51%) WebLogic
3 50 (3.76%) Apache Spark
4 47 (3.53%) Apache
5 37 (2.78%) Elasticsearch
6 33 (2.48%) CMS
7 29 (2.18%) Tomcat
8 23 (1.73%) JBoss
9 21 (1.58%) WebSphere
10 19 (1.43%) OpenStack
11 15 (1.13%) Anypoint
12 14 (1.05%) SharePoint
13 13 (0.98%) Apache Airflow
14 12 (0.90%) Mule
15 11 (0.83%) BizTalk Server
15 11 (0.83%) nginx
15 11 (0.83%) Oracle SOA Suite
16 10 (0.75%) Cloud Foundry
16 10 (0.75%) Red Hat Fuse
17 9 (0.68%) IIS
Applications
1 17 (1.28%) Microsoft Office
2 16 (1.20%) Chatbot
3 14 (1.05%) Microsoft Excel
4 8 (0.60%) MS Visio
5 7 (0.53%) Adobe Creative Suite
5 7 (0.53%) InVision
5 7 (0.53%) Photoshop
5 7 (0.53%) Sketch
6 5 (0.38%) Microsoft Project
7 3 (0.23%) Microsoft PowerPoint
8 2 (0.15%) Mingle
9 1 (0.075%) Adobe XD
Business Applications
1 15 (1.13%) Dynamics CRM
1 15 (1.13%) SunGard Martini
2 13 (0.98%) Magento
3 11 (0.83%) Sparx Enterprise Architect
4 10 (0.75%) Oracle ERP
5 9 (0.68%) SAP FI-CA
5 9 (0.68%) SAP PSCD
6 5 (0.38%) Distributed Ledger
7 3 (0.23%) BusinessWorks
7 3 (0.23%) Shopify
8 2 (0.15%) Dynamics AX
8 2 (0.15%) SAP CRM
8 2 (0.15%) Sentinel
8 2 (0.15%) Workday HCM
9 1 (0.075%) NetSuite
9 1 (0.075%) Oracle Cash Management
9 1 (0.075%) Remedy ITSM
9 1 (0.075%) Salesforce.com CRM
9 1 (0.075%) Tesseract
9 1 (0.075%) TIBCO iProcess
Cloud Services
1 395 (29.70%) Azure
2 245 (18.42%) AWS
3 169 (12.71%) GitHub
4 99 (7.44%) IaaS
5 98 (7.37%) PaaS
6 68 (5.11%) GCP
7 67 (5.04%) Serverless
8 53 (3.98%) OpenShift
8 53 (3.98%) SaaS
9 51 (3.83%) Amazon S3
10 49 (3.68%) Power Platform
11 46 (3.46%) AWS Lambda
11 46 (3.46%) Azure Logic Apps
12 38 (2.86%) Azure Data Factory
13 36 (2.71%) Azure Service Bus
14 32 (2.41%) Cloud Computing
15 31 (2.33%) Amazon EC2
16 28 (2.11%) Azure Storage
17 27 (2.03%) Azure Active Directory
17 27 (2.03%) Azure Cosmos DB
Communications & Networking
1 97 (7.29%) HTTP
2 39 (2.93%) DNS
3 38 (2.86%) Internet
4 35 (2.63%) Firewall
4 35 (2.63%) TCP/IP
5 27 (2.03%) FTP
6 26 (1.95%) LAN
7 24 (1.80%) VSAN
8 21 (1.58%) Software-Defined Networking
9 20 (1.50%) SSL
10 19 (1.43%) 3GPP
10 19 (1.43%) SGSN
11 16 (1.20%) HTTPS
12 15 (1.13%) SSH
12 15 (1.13%) WAN
13 12 (0.90%) Remote Desktop
14 9 (0.68%) SNMP
15 8 (0.60%) DHCP
15 8 (0.60%) RTMP
16 7 (0.53%) VPN
Database & Business Intelligence
1 155 (11.65%) SQL Server
2 140 (10.53%) Relational Database
3 86 (6.47%) NoSQL
4 80 (6.02%) PostgreSQL
5 78 (5.86%) MongoDB
6 66 (4.96%) MySQL
7 64 (4.81%) Big Data
8 62 (4.66%) Oracle Database
9 60 (4.51%) Data Warehouse
10 50 (3.76%) SQL Server Integration Services
11 43 (3.23%) RDBMS
12 42 (3.16%) Hadoop
13 35 (2.63%) Power BI
14 34 (2.56%) Data Lake
15 28 (2.11%) Apache Hive
15 28 (2.11%) Azure SQL Database
15 28 (2.11%) BusinessObjects
16 27 (2.03%) Oracle Database 12c
17 26 (1.95%) DB2
18 24 (1.80%) Amazon RDS
Development Applications
1 427 (32.11%) Git (software)
2 378 (28.42%) Jenkins
3 207 (15.56%) JIRA
4 164 (12.33%) Maven
5 112 (8.42%) JUnit
6 72 (5.41%) Selenium
6 72 (5.41%) Visual Studio
7 69 (5.19%) Cucumber
8 64 (4.81%) Postman
9 61 (4.59%) Sonatype Nexus
10 58 (4.36%) Artifactory
11 54 (4.06%) Bitbucket
12 53 (3.98%) Subversion
13 45 (3.38%) TeamCity
14 41 (3.08%) Eclipse
14 41 (3.08%) Gradle
14 41 (3.08%) SoapUI
15 36 (2.71%) IntelliJ
16 31 (2.33%) Oracle APEX
16 31 (2.33%) Xcode
General
1 286 (21.50%) Social Skills
2 247 (18.57%) Finance
3 106 (7.97%) Banking
4 92 (6.92%) Analytical Skills
5 82 (6.17%) Public Sector
6 38 (2.86%) Documentation Skills
7 37 (2.78%) Telecoms
8 33 (2.48%) Manufacturing
9 30 (2.26%) Investment Banking
10 28 (2.11%) Influencing Skills
11 25 (1.88%) Marketing
12 18 (1.35%) Retail
13 17 (1.28%) Back Office
14 15 (1.13%) Front Office
15 11 (0.83%) Electronics
15 11 (0.83%) Presentation Skills
16 10 (0.75%) Legal
17 9 (0.68%) Publishing
18 8 (0.60%) Pharmaceutical
19 7 (0.53%) Law
Job Titles
1 625 (46.99%) Developer
2 147 (11.05%) Java Developer
3 129 (9.70%) Architect
4 102 (7.67%) Senior Developer
5 80 (6.02%) Analyst
5 80 (6.02%) DevOps Engineer
6 70 (5.26%) Azure Engineer
7 60 (4.51%) Data Engineer
8 54 (4.06%) Front End Developer (Client-Side Developer)
9 49 (3.68%) Full Stack Developer
10 48 (3.61%) Azure DevOps Engineer
11 44 (3.31%) .NET Developer
11 44 (3.31%) Azure DevOps
12 41 (3.08%) iOS Developer
13 39 (2.93%) Android Developer
13 39 (2.93%) C# Developer
14 37 (2.78%) Cloud Engineer
15 34 (2.56%) Solutions Architect
16 31 (2.33%) Azure Developer
16 31 (2.33%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 604 (45.41%) XML
2 430 (32.33%) REST
3 299 (22.48%) HTML
4 264 (19.85%) SOAP
5 261 (19.62%) Web Services
6 216 (16.24%) CSS
7 215 (16.17%) RESTful
8 201 (15.11%) Spring
9 188 (14.14%) .NET
10 159 (11.95%) Node.js
11 139 (10.45%) React
12 133 (10.00%) YAML
13 125 (9.40%) Spring Boot
14 111 (8.35%) AngularJS
15 106 (7.97%) HTML5
16 86 (6.47%) Kafka
17 78 (5.86%) jQuery
18 77 (5.79%) J2EE
19 75 (5.64%) .NET Core
20 62 (4.66%) .NET Framework
Miscellaneous
1 89 (6.69%) User Experience
2 69 (5.19%) Public Cloud
3 56 (4.21%) Mobile App
4 53 (3.98%) Data Centre
5 36 (2.71%) Cloud Native
6 33 (2.48%) Data Structures
7 31 (2.33%) Enterprise Software
8 27 (2.03%) Derivative
9 26 (1.95%) Greenfield Project
10 25 (1.88%) Client/Server
11 23 (1.73%) Reference Data
12 22 (1.65%) iPad
13 21 (1.58%) Self-Motivation
14 20 (1.50%) iPhone
14 20 (1.50%) Linux Command Line
14 20 (1.50%) W3C
15 19 (1.43%) Animation
16 17 (1.28%) Data Protection Act
17 15 (1.13%) Management Information System
18 14 (1.05%) Replication
Operating Systems
1 238 (17.89%) Linux
2 205 (15.41%) Windows
3 125 (9.40%) Unix
4 62 (4.66%) Apple iOS
5 59 (4.44%) Android
6 35 (2.63%) Windows Server
7 25 (1.88%) VMS
8 20 (1.50%) CoreOS
9 19 (1.43%) Red Hat Enterprise Linux
10 13 (0.98%) CentOS
11 12 (0.90%) Ubuntu
12 10 (0.75%) Mac OS
13 9 (0.68%) Windows Server 2016
14 7 (0.53%) Mac OS X
15 6 (0.45%) Windows Server 2012
16 5 (0.38%) Debian
16 5 (0.38%) Windows 10
17 3 (0.23%) Windows Server 2019
18 2 (0.15%) Solaris
18 2 (0.15%) Windows 7
Processes & Methodologies
1 592 (44.51%) Agile Software Development
2 313 (23.53%) DevOps
3 245 (18.42%) Microservices
4 214 (16.09%) Test Automation
5 155 (11.65%) Scrum
6 152 (11.43%) TDD
7 148 (11.13%) Problem-Solving
8 147 (11.05%) Continuous Integration
9 133 (10.00%) Data Modelling
10 118 (8.87%) OO
11 111 (8.35%) MVC
12 102 (7.67%) Analytics
13 99 (7.44%) Business Intelligence
14 93 (6.99%) Software Engineering
15 89 (6.69%) Unit Testing
16 87 (6.54%) BDD
16 87 (6.54%) Front End Development
17 84 (6.32%) Configuration Management
18 83 (6.24%) SOA
19 76 (5.71%) ETL
Programming Languages
1 476 (35.79%) SQL
2 473 (35.56%) Java
3 368 (27.67%) JavaScript
4 288 (21.65%) Python
5 203 (15.26%) C#
6 115 (8.65%) Java 8
7 114 (8.57%) PowerShell
8 95 (7.14%) PL/SQL
9 72 (5.41%) C++
10 69 (5.19%) Shell Script
11 68 (5.11%) Scala
12 58 (4.36%) Bash Shell
13 57 (4.29%) TypeScript
14 50 (3.76%) PHP
15 45 (3.38%) Apple Swift
16 43 (3.23%) Kotlin
17 34 (2.56%) T-SQL
18 30 (2.26%) Objective-C
19 29 (2.18%) C
20 26 (1.95%) Ruby
Qualifications
1 161 (12.11%) Security Cleared
2 131 (9.85%) SC Cleared
3 67 (5.04%) Degree
4 22 (1.65%) Computer Science Degree
5 18 (1.35%) ISTQB
6 16 (1.20%) ISTQB Foundation Certification
7 13 (0.98%) ISEB
8 11 (0.83%) DV Cleared
9 10 (0.75%) BPSS Clearance
10 8 (0.60%) ITIL Certification
10 8 (0.60%) Numerate Degree
11 7 (0.53%) Master's Degree
12 6 (0.45%) CISA
12 6 (0.45%) CISM
12 6 (0.45%) CISSP
12 6 (0.45%) GIAC
13 4 (0.30%) AWS Certification
13 4 (0.30%) DBS Check
14 2 (0.15%) ISEB Practitioner
14 2 (0.15%) Microsoft Certification
Quality Assurance & Compliance
1 97 (7.29%) QA
2 40 (3.01%) Accessibility
3 19 (1.43%) OASIS TOSCA
4 15 (1.13%) WCAG
5 14 (1.05%) Data Quality
6 10 (0.75%) HL7
7 6 (0.45%) NIST
8 5 (0.38%) Disclosure Scotland
8 5 (0.38%) GDPR
9 3 (0.23%) Actionable Recommendations
10 2 (0.15%) ISO 9000
11 1 (0.075%) EMIR
11 1 (0.075%) GMP
11 1 (0.075%) ISO 20022
11 1 (0.075%) MiFID
11 1 (0.075%) PSD2
11 1 (0.075%) SNOMED CT
11 1 (0.075%) TARGET2
System Software
1 155 (11.65%) Docker
2 44 (3.31%) VMware Infrastructure
3 40 (3.01%) Active Directory
4 32 (2.41%) VMware ESXi
5 24 (1.80%) Virtual Machines
6 20 (1.50%) LXC
7 19 (1.43%) HDFS
7 19 (1.43%) KVM
8 17 (1.28%) vSphere
9 15 (1.13%) VMware NSX
10 12 (0.90%) Hyper-V
11 8 (0.60%) NFS
12 5 (0.38%) Virtual Servers
13 4 (0.30%) Virtual Desktop
14 2 (0.15%) vCloud
15 1 (0.075%) Apache ZooKeeper
15 1 (0.075%) Firmware
15 1 (0.075%) RHEV
15 1 (0.075%) VirtualBox
15 1 (0.075%) VMware Workstation
Systems Management
1 157 (11.80%) Ansible
2 150 (11.28%) Kubernetes
3 99 (7.44%) Terraform
4 43 (3.23%) Grafana
5 41 (3.08%) Puppet
6 27 (2.03%) vRealize
7 26 (1.95%) Opscode Chef
8 25 (1.88%) Prometheus
9 21 (1.58%) Docker Swarm
10 19 (1.43%) Cloudify
10 19 (1.43%) Juju
11 17 (1.28%) vCenter Server
12 15 (1.13%) BladeLogic
12 15 (1.13%) Kibana
13 12 (0.90%) PowerCLI
14 11 (0.83%) SCVMM
15 9 (0.68%) Nagios
16 7 (0.53%) Istio
17 6 (0.45%) logstash
17 6 (0.45%) Rancher
Vendors
1 214 (16.09%) Oracle
2 129 (9.70%) Microsoft
3 60 (4.51%) VMware
4 58 (4.36%) SAP
5 57 (4.29%) Informatica
6 53 (3.98%) Google
7 48 (3.61%) webMethods
8 47 (3.53%) Red Hat
9 43 (3.23%) Splunk
10 41 (3.08%) WSO2
11 39 (2.93%) Salesforce.com
12 37 (2.78%) BEA
13 36 (2.71%) Dell
14 34 (2.56%) MuleSoft
15 33 (2.48%) Adobe
16 31 (2.33%) IBM
17 30 (2.26%) Cisco
18 27 (2.03%) HP
19 25 (1.88%) Databricks
20 22 (1.65%) ServiceNow