Period
to 25 October 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 October 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 Oct 2021
Same period 2020 Same period 2019
Rank 154 119 110
Rank change year-on-year -35 -9 +2
Contract jobs citing JSON 1,510 681 1,884
As % of all contract jobs advertised in the UK 1.78% 2.14% 2.23%
As % of the Libraries, Frameworks & Software Standards category 5.98% 6.88% 7.20%
Number of daily rates quoted 1,004 441 1,204
10th Percentile £388 £325 £340
25th Percentile £450 £400 £413
Median daily rate (50th Percentile) £525 £450 £488
Median % change year-on-year +16.67% -7.69% +2.63%
75th Percentile £615 £538 £565
90th Percentile £725 £600 £650
UK excluding London median daily rate £475 £435 £450
% change year-on-year +9.20% -3.33% -
Number of hourly rates quoted 29 7 15
10th Percentile £23.05 £32.70 £18.10
25th Percentile £44.90 £41.00 £51.13
Median hourly rate £63.00 £51.00 £60.00
Median % change year-on-year +23.53% -15.00% +71.43%
75th Percentile £68.75 £54.50 £122.50
90th Percentile £72.76 £55.00 "
UK excluding London median hourly rate £64.25 £55.00 £55.00
% change year-on-year +16.82% - +57.14%

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 25,245 9,892 26,163
As % of all contract IT jobs advertised in the UK 29.76% 31.06% 31.01%
Number of daily rates quoted 18,189 7,009 18,389
10th Percentile £364 £313 £338
25th Percentile £430 £400 £406
Median daily rate (50th Percentile) £525 £495 £500
Median % change year-on-year +6.06% -1.00% +5.26%
75th Percentile £625 £588 £575
90th Percentile £700 £675 £650
UK excluding London median daily rate £475 £440 £440
% change year-on-year +7.95% - +3.53%
Number of hourly rates quoted 245 74 245
10th Percentile £17.84 £22.80 £20.03
25th Percentile £30.00 £30.47 £31.25
Median hourly rate £49.00 £42.50 £45.00
Median % change year-on-year +15.29% -5.56% +8.15%
75th Percentile £63.50 £54.52 £53.00
90th Percentile £73.45 £66.00 £73.45
UK excluding London median hourly rate £49.00 £46.25 £43.75
% change year-on-year +5.95% +5.71% +5.42%

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 October 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 October 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 October 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 -34 1,209 £525 +7.69% 512
London +4 677 £550 +4.76% 219
UK excluding London -58 543 £475 +9.20% 316
Work from Home -60 454 £525 +16.67% 89
South East -4 143 £496 +9.52% 83
North of England -54 135 £475 +8.26% 98
Midlands -68 86 £450 +4.17% 52
Scotland -23 81 £460 +8.24% 17
West Midlands -53 80 £450 +4.17% 32
North West -25 66 £470 +16.05% 55
Yorkshire -57 51 £500 +11.11% 39
South West -37 48 £400 -23.81% 26
East of England -25 45 £500 +5.26% 31
North East +6 20 £448 +10.97% 4
Wales -20 11 £425 -20.00% 9
Northern Ireland -28 6 £475 +18.75% 2
East Midlands -53 5 £425 -8.11% 20

For the 6 months to 25 October 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.

1 727 (48.15%) Agile Software Development
2 702 (46.49%) XML
3 556 (36.82%) Java
4 550 (36.42%) SQL
5 523 (34.64%) REST
6 485 (32.12%) Git (software)
7 442 (29.27%) Jenkins
8 438 (29.01%) Azure
9 423 (28.01%) DevOps
10 403 (26.69%) JavaScript
11 337 (22.32%) Python
12 336 (22.25%) Social Skills
13 332 (21.99%) Microservices
14 317 (20.99%) HTML
15 306 (20.26%) Web Services
16 305 (20.20%) SOAP
17 278 (18.41%) Finance
18 275 (18.21%) Linux
19 262 (17.35%) Test Automation
20 257 (17.02%) Oracle
21 248 (16.42%) Spring
21 248 (16.42%) JIRA
22 245 (16.23%) AWS
23 244 (16.16%) CSS
24 243 (16.09%) C#
25 222 (14.70%) RESTful
26 216 (14.30%) .NET
27 214 (14.17%) Problem-Solving
28 204 (13.51%) GitHub
29 201 (13.31%) Windows

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
1 136 (9.01%) Confluence
2 73 (4.83%) WebLogic
3 66 (4.37%) Apache
4 53 (3.51%) Apache Spark
5 40 (2.65%) Elasticsearch
5 40 (2.65%) Tomcat
6 37 (2.45%) CMS
7 26 (1.72%) JBoss
8 25 (1.66%) IIS
9 24 (1.59%) WebSphere
10 18 (1.19%) nginx
11 15 (0.99%) BizTalk Server
11 15 (0.99%) SharePoint
12 13 (0.86%) Mule
13 12 (0.79%) Oracle SOA Suite
14 11 (0.73%) Apache Airflow
14 11 (0.73%) Cloud Foundry
15 10 (0.66%) Headless CMS
16 9 (0.60%) WordPress
17 8 (0.53%) Jetty
Applications
1 39 (2.58%) Microsoft Excel
2 17 (1.13%) Microsoft Office
3 13 (0.86%) Chatbot
4 11 (0.73%) Microsoft PowerPoint
5 8 (0.53%) Adobe Creative Suite
5 8 (0.53%) InVision
5 8 (0.53%) Sketch
6 7 (0.46%) MS Visio
7 6 (0.40%) Microsoft Project
8 3 (0.20%) Mingle
9 2 (0.13%) Photoshop
9 2 (0.13%) Spreadsheet
10 1 (0.066%) Adobe XD
Business Applications
1 27 (1.79%) SunGard Martini
2 17 (1.13%) Oracle ERP
3 16 (1.06%) Dynamics CRM
4 12 (0.79%) Magento
5 7 (0.46%) SAP FI-CA
5 7 (0.46%) SAP PSCD
5 7 (0.46%) Social Studio
6 6 (0.40%) Sparx Enterprise Architect
7 5 (0.33%) NetSuite
8 4 (0.26%) Salesforce.com CRM
9 3 (0.20%) Shopify
10 2 (0.13%) BusinessWorks
10 2 (0.13%) Endur
10 2 (0.13%) SAP CRM
10 2 (0.13%) Workday HCM
11 1 (0.066%) Distributed Ledger
11 1 (0.066%) Dynamics AX
11 1 (0.066%) Oracle BPM
11 1 (0.066%) Oracle Cash Management
11 1 (0.066%) Oracle Retail
Cloud Services
1 438 (29.01%) Azure
2 245 (16.23%) AWS
3 204 (13.51%) GitHub
4 114 (7.55%) PaaS
5 100 (6.62%) Serverless
6 87 (5.76%) IaaS
6 87 (5.76%) Power Platform
7 62 (4.11%) SaaS
8 57 (3.77%) Azure Data Factory
9 52 (3.44%) Azure Logic Apps
10 49 (3.25%) GCP
11 47 (3.11%) AWS Lambda
12 46 (3.05%) Azure Functions
13 43 (2.85%) Azure Service Bus
13 43 (2.85%) OpenShift
14 42 (2.78%) Amazon S3
14 42 (2.78%) Azure Cosmos DB
15 34 (2.25%) Azure Storage
16 33 (2.19%) Azure Active Directory
17 32 (2.12%) Dynamics 365
Communications & Networking
1 128 (8.48%) HTTP
2 49 (3.25%) DNS
3 48 (3.18%) Internet
4 45 (2.98%) TCP/IP
5 41 (2.72%) Firewall
6 39 (2.58%) FTP
7 32 (2.12%) SSL
8 28 (1.85%) LAN
9 25 (1.66%) SNMP
10 23 (1.52%) WAN
11 18 (1.19%) Intranet
12 17 (1.13%) SSH
13 16 (1.06%) IPv4
13 16 (1.06%) VSAN
14 15 (0.99%) MPLS
15 14 (0.93%) BGP
15 14 (0.93%) HSRP
15 14 (0.93%) RSVP
15 14 (0.93%) VPLS
15 14 (0.93%) VRRP
Database & Business Intelligence
1 175 (11.59%) SQL Server
2 166 (10.99%) Relational Database
3 133 (8.81%) NoSQL
4 112 (7.42%) MongoDB
5 86 (5.70%) PostgreSQL
6 85 (5.63%) Data Lake
7 75 (4.97%) Data Warehouse
7 75 (4.97%) MySQL
8 73 (4.83%) Oracle Database
9 71 (4.70%) Power BI
10 69 (4.57%) Big Data
11 59 (3.91%) SQL Server Integration Services
12 55 (3.64%) Hadoop
13 45 (2.98%) BusinessObjects
14 38 (2.52%) RDBMS
15 37 (2.45%) Azure SQL Database
15 37 (2.45%) Parquet
16 36 (2.38%) Tableau
17 35 (2.32%) Metadata
18 30 (1.99%) Oracle Database 12c
Development Applications
1 485 (32.12%) Git (software)
2 442 (29.27%) Jenkins
3 248 (16.42%) JIRA
4 193 (12.78%) Maven
5 97 (6.42%) Postman
6 96 (6.36%) JUnit
7 86 (5.70%) Visual Studio
8 80 (5.30%) Selenium
9 78 (5.17%) Cucumber
10 76 (5.03%) Bitbucket
11 73 (4.83%) Subversion
12 65 (4.30%) Artifactory
13 55 (3.64%) Sonatype Nexus
14 54 (3.58%) Gradle
14 54 (3.58%) TeamCity
15 53 (3.51%) SoapUI
16 39 (2.58%) Android Studio
17 35 (2.32%) Robot Framework
18 34 (2.25%) IntelliJ
19 33 (2.19%) GitLab
General
1 336 (22.25%) Social Skills
2 278 (18.41%) Finance
3 147 (9.74%) Banking
4 106 (7.02%) Public Sector
5 101 (6.69%) Analytical Skills
6 58 (3.84%) Investment Banking
7 31 (2.05%) Documentation Skills
7 31 (2.05%) Marketing
8 28 (1.85%) Front Office
9 25 (1.66%) Presentation Skills
10 24 (1.59%) Telecoms
11 23 (1.52%) Manufacturing
12 20 (1.32%) Influencing Skills
13 18 (1.19%) Retail
14 16 (1.06%) Back Office
15 15 (0.99%) Legal
16 13 (0.86%) Advertising
17 11 (0.73%) Financial Institution
18 9 (0.60%) Retail Banking
19 8 (0.53%) Automotive
Job Titles
1 759 (50.26%) Developer
2 206 (13.64%) Java Developer
3 151 (10.00%) Architect
4 126 (8.34%) Senior Developer
5 92 (6.09%) Analyst
6 69 (4.57%) Data Engineer
6 69 (4.57%) DevOps Engineer
7 56 (3.71%) Azure Engineer
8 54 (3.58%) Front End Developer (Client-Side Developer)
9 53 (3.51%) Solutions Architect
10 48 (3.18%) Senior Java Developer
11 45 (2.98%) Full Stack Developer
12 40 (2.65%) .NET Developer
12 40 (2.65%) Android Developer
13 33 (2.19%) iOS Developer
14 32 (2.12%) C# Developer
14 32 (2.12%) Cloud Engineer
14 32 (2.12%) Salesforce Developer
15 31 (2.05%) Lead Developer
15 31 (2.05%) SQL Developer
Libraries, Frameworks & Software Standards
1 702 (46.49%) XML
2 523 (34.64%) REST
3 317 (20.99%) HTML
4 306 (20.26%) Web Services
5 305 (20.20%) SOAP
6 248 (16.42%) Spring
7 244 (16.16%) CSS
8 222 (14.70%) RESTful
9 216 (14.30%) .NET
10 172 (11.39%) Node.js
11 168 (11.13%) Spring Boot
12 148 (9.80%) AngularJS
13 139 (9.21%) React
14 111 (7.35%) YAML
15 110 (7.28%) HTML5
16 94 (6.23%) Kafka
17 82 (5.43%) .NET Core
18 79 (5.23%) J2EE
19 78 (5.17%) XSLT
20 76 (5.03%) .NET Framework
Miscellaneous
1 77 (5.10%) User Experience
2 62 (4.11%) Public Cloud
3 60 (3.97%) Data Structures
4 58 (3.84%) Mobile App
5 45 (2.98%) Cloud Native
6 42 (2.78%) Data Centre
7 31 (2.05%) Reference Data
7 31 (2.05%) Self-Motivation
8 29 (1.92%) Greenfield Project
9 27 (1.79%) Enterprise Software
9 27 (1.79%) Private Cloud
10 26 (1.72%) Data Protection Act
11 25 (1.66%) Client/Server
11 25 (1.66%) Derivative
12 19 (1.26%) Management Information System
12 19 (1.26%) W3C
13 17 (1.13%) iPad
14 15 (0.99%) iPhone
15 13 (0.86%) Legacy Systems
16 12 (0.79%) Linux Command Line
Operating Systems
1 275 (18.21%) Linux
2 201 (13.31%) Windows
3 154 (10.20%) Unix
4 62 (4.11%) Android
5 47 (3.11%) Apple iOS
6 40 (2.65%) Windows Server
7 18 (1.19%) Red Hat Enterprise Linux
8 17 (1.13%) VMS
9 14 (0.93%) CoreOS
10 13 (0.86%) Windows Server 2016
11 11 (0.73%) Windows Server 2012
12 8 (0.53%) CentOS
12 8 (0.53%) Mac OS X
12 8 (0.53%) Ubuntu
13 6 (0.40%) Mac OS
14 4 (0.26%) Windows 10
14 4 (0.26%) Windows Server 2019
15 3 (0.20%) Windows 7
16 2 (0.13%) Windows Server 2008
17 1 (0.066%) Embedded Linux
Processes & Methodologies
1 727 (48.15%) Agile Software Development
2 423 (28.01%) DevOps
3 332 (21.99%) Microservices
4 262 (17.35%) Test Automation
5 214 (14.17%) Problem-Solving
6 200 (13.25%) Scrum
7 196 (12.98%) Data Modelling
8 170 (11.26%) TDD
9 146 (9.67%) Continuous Integration
10 136 (9.01%) OO
11 134 (8.87%) Analytics
12 129 (8.54%) Business Intelligence
13 120 (7.95%) Software Engineering
14 118 (7.81%) Unit Testing
15 115 (7.62%) BDD
16 110 (7.28%) Configuration Management
17 99 (6.56%) MVC
18 98 (6.49%) Full Stack Development
19 97 (6.42%) SOA
20 93 (6.16%) ETL
Programming Languages
1 556 (36.82%) Java
2 550 (36.42%) SQL
3 403 (26.69%) JavaScript
4 337 (22.32%) Python
5 243 (16.09%) C#
6 148 (9.80%) Java 8
7 118 (7.81%) PowerShell
8 109 (7.22%) PL/SQL
9 98 (6.49%) Shell Script
10 69 (4.57%) TypeScript
11 67 (4.44%) Scala
12 66 (4.37%) C++
13 51 (3.38%) Kotlin
14 50 (3.31%) T-SQL
15 44 (2.91%) PHP
16 43 (2.85%) Bash Shell
17 41 (2.72%) ES6
18 38 (2.52%) Apple Swift
19 30 (1.99%) Ruby
20 29 (1.92%) C
Qualifications
1 162 (10.73%) Security Cleared
2 134 (8.87%) SC Cleared
3 80 (5.30%) Degree
4 21 (1.39%) BPSS Clearance
5 20 (1.32%) Computer Science Degree
5 20 (1.32%) DV Cleared
6 15 (0.99%) ISTQB
7 14 (0.93%) ISTQB Foundation Certification
8 13 (0.86%) Master's Degree
9 11 (0.73%) CCIE
9 11 (0.73%) Cisco Certification
9 11 (0.73%) ISEB
10 9 (0.60%) ITIL Certification
10 9 (0.60%) Microsoft Certification
11 8 (0.53%) Numerate Degree
12 5 (0.33%) CCIE Service Provider
12 5 (0.33%) DBS Check
12 5 (0.33%) MCSA
12 5 (0.33%) MCSE
13 4 (0.26%) CCIE Security
Quality Assurance & Compliance
1 104 (6.89%) QA
2 40 (2.65%) Accessibility
3 28 (1.85%) Data Quality
4 22 (1.46%) WCAG
5 10 (0.66%) GDPR
5 10 (0.66%) HL7
6 8 (0.53%) Disclosure Scotland
7 7 (0.46%) OASIS TOSCA
8 4 (0.26%) ISO 20022
9 3 (0.20%) ISO 15022
9 3 (0.20%) ISO/IEC 27001
10 2 (0.13%) SLA
11 1 (0.066%) EMIR
11 1 (0.066%) GMP
11 1 (0.066%) ISO 8583
11 1 (0.066%) MiFID
11 1 (0.066%) PCI DSS
11 1 (0.066%) RosettaNet
11 1 (0.066%) SNOMED CT
11 1 (0.066%) TARGET2
System Software
1 161 (10.66%) Docker
2 63 (4.17%) Active Directory
3 48 (3.18%) VMware Infrastructure
4 31 (2.05%) Virtual Machines
5 19 (1.26%) HDFS
5 19 (1.26%) vSphere
6 16 (1.06%) VMware ESXi
7 15 (0.99%) VMware NSX
8 11 (0.73%) NFS
9 9 (0.60%) KVM
9 9 (0.60%) LXC
10 8 (0.53%) Hyper-V
11 5 (0.33%) Virtual Servers
12 4 (0.26%) Virtual Desktop
13 2 (0.13%) BitLocker
14 1 (0.066%) Apache ZooKeeper
14 1 (0.066%) Oracle RAC
14 1 (0.066%) RHEV
14 1 (0.066%) VirtualBox
14 1 (0.066%) VMware Workstation
Systems Management
1 168 (11.13%) Ansible
2 142 (9.40%) Kubernetes
3 106 (7.02%) Terraform
4 37 (2.45%) Grafana
5 36 (2.38%) Puppet
6 32 (2.12%) Kibana
7 27 (1.79%) BladeLogic
8 21 (1.39%) vRealize
9 18 (1.19%) Single Sign-On
9 18 (1.19%) vCenter Server
10 17 (1.13%) Opscode Chef
10 17 (1.13%) Prometheus
11 13 (0.86%) logstash
12 11 (0.73%) Nagios
13 9 (0.60%) Docker Swarm
14 8 (0.53%) PowerCLI
15 7 (0.46%) Cloudify
15 7 (0.46%) Juju
15 7 (0.46%) Nessus
15 7 (0.46%) Netcool
Vendors
1 257 (17.02%) Oracle
2 163 (10.79%) Microsoft
3 73 (4.83%) Salesforce.com
4 70 (4.64%) Informatica
5 62 (4.11%) VMware
6 61 (4.04%) webMethods
7 58 (3.84%) Splunk
8 54 (3.58%) Databricks
8 54 (3.58%) WSO2
9 49 (3.25%) BEA
10 45 (2.98%) SAP
11 41 (2.72%) Google
12 38 (2.52%) MuleSoft
13 37 (2.45%) IBM
14 34 (2.25%) AppDynamics
15 27 (1.79%) Cisco
15 27 (1.79%) FIS
15 27 (1.79%) SunGard
16 23 (1.52%) New Relic
17 21 (1.39%) Adobe