Period
to 23 January 2022

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 23 January 2022 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
23 Jan 2022
Same period 2021 Same period 2020
Rank 159 133 134
Rank change year-on-year -26 +1 -16
Contract jobs citing JSON 674 364 637
As % of all contract jobs advertised in London 1.83% 2.07% 2.11%
As % of the Libraries, Frameworks & Software Standards category 5.64% 5.74% 5.95%
Number of daily rates quoted 498 251 436
10th Percentile £425 £363 £334
25th Percentile £500 £425 £413
Median daily rate (50th Percentile) £575 £500 £500
Median % change year-on-year +15.00% - -2.44%
75th Percentile £688 £575 £575
90th Percentile £750 £638 £700
England median daily rate £550 £465 £475
% change year-on-year +18.28% -2.11% -4.04%
Number of hourly rates quoted 1 4 3
10th Percentile - £40.60 -
25th Percentile £53.75 £41.50 £44.43
Median hourly rate £57.50 £55.00 £48.85
Median % change year-on-year +4.55% +12.59% -
75th Percentile £61.25 £68.00 £59.14
90th Percentile - - £62.65
England median hourly rate £55.00 £46.50 £50.50
% change year-on-year +18.28% -7.92% +44.29%

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 11,956 6,339 10,707
As % of all contract IT jobs advertised in London 32.43% 36.01% 35.53%
Number of daily rates quoted 9,229 4,731 8,017
10th Percentile £414 £360 £375
25th Percentile £500 £425 £438
Median daily rate (50th Percentile) £595 £525 £525
Median % change year-on-year +13.33% - -
75th Percentile £688 £613 £613
90th Percentile £763 £700 £698
England median daily rate £550 £488 £500
% change year-on-year +12.82% -2.50% +2.04%
Number of hourly rates quoted 62 25 57
10th Percentile £20.89 £22.75 £25.00
25th Percentile £35.00 £30.68 £36.70
Median hourly rate £55.25 £45.00 £48.85
Median % change year-on-year +22.78% -7.88% +28.55%
75th Percentile £71.00 £54.00 £53.28
90th Percentile £80.50 £63.40 £78.75
England median hourly rate £50.88 £45.00 £46.95
% change year-on-year +13.06% -4.15% +13.09%

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 23 January 2022.

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
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 23 January 2022. 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
Jobs
Central London -20 72 £575 +9.52% 45
South London -15 8 £540 +2.86% 2
East London -3 7 £530 +4.43% 18
West London -18 7 £500 +17.65% 18
JSON
England

For the 6 months to 23 January 2022, 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.

1 320 (47.48%) XML
2 273 (40.50%) Agile Software Development
3 227 (33.68%) JavaScript
3 227 (33.68%) SQL
4 221 (32.79%) REST
5 209 (31.01%) Java
6 196 (29.08%) HTML
7 191 (28.34%) DevOps
8 176 (26.11%) Azure
9 172 (25.52%) Jenkins
10 171 (25.37%) Finance
11 166 (24.63%) Python
12 165 (24.48%) CI/CD
13 156 (23.15%) CSS
14 151 (22.40%) Web Services
15 150 (22.26%) Social Skills
16 148 (21.96%) Git (software)
17 131 (19.44%) C#
18 128 (18.99%) Test Automation
19 123 (18.25%) Microservices
20 116 (17.21%) Problem-Solving
21 112 (16.62%) SQL Server
21 112 (16.62%) Microsoft
22 111 (16.47%) .NET
23 108 (16.02%) Banking
24 107 (15.88%) AWS
25 106 (15.73%) SOAP
26 102 (15.13%) JIRA
26 102 (15.13%) Relational Database
27 93 (13.80%) RESTful

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 43 (6.38%) Confluence
2 28 (4.15%) IIS
3 26 (3.86%) CMS
4 21 (3.12%) Apache
5 20 (2.97%) Apache Spark
6 14 (2.08%) Elasticsearch
7 9 (1.34%) Tomcat
8 8 (1.19%) SharePoint
9 7 (1.04%) JBoss
9 7 (1.04%) WebSphere
10 6 (0.89%) Headless CMS
10 6 (0.89%) Jetty
10 6 (0.89%) nginx
10 6 (0.89%) Oracle SOA Suite
11 5 (0.74%) Apache Airflow
12 4 (0.59%) Cloud Foundry
12 4 (0.59%) Magnolia
12 4 (0.59%) Mattermost
12 4 (0.59%) Red Hat Fuse
12 4 (0.59%) WebLogic
Applications
1 29 (4.30%) Microsoft Excel
2 12 (1.78%) Chatbot
2 12 (1.78%) Microsoft PowerPoint
3 11 (1.63%) Microsoft Office
4 6 (0.89%) MS Visio
5 5 (0.74%) Microsoft Project
6 3 (0.45%) Mingle
7 2 (0.30%) Adobe Creative Suite
7 2 (0.30%) Sketch
7 2 (0.30%) Spreadsheet
8 1 (0.15%) Adobe XD
8 1 (0.15%) Photoshop
Business Applications
1 25 (3.71%) SunGard Martini
2 12 (1.78%) Shopify
3 6 (0.89%) Sparx Enterprise Architect
4 5 (0.74%) Payment Gateway
4 5 (0.74%) Salesforce.com CRM
5 3 (0.45%) Oracle EBS
5 3 (0.45%) Oracle ERP
5 3 (0.45%) Sentinel
6 2 (0.30%) Endur
6 2 (0.30%) Oracle BPM
6 2 (0.30%) SAP CRM
7 1 (0.15%) Oracle Assets
7 1 (0.15%) Oracle Cash Management
7 1 (0.15%) Oracle EBS R12
7 1 (0.15%) Oracle Financials
7 1 (0.15%) Oracle General Ledger
7 1 (0.15%) Oracle Payables
7 1 (0.15%) Oracle Receivables
7 1 (0.15%) SAP HR
7 1 (0.15%) WebTrends
Cloud Services
1 176 (26.11%) Azure
2 107 (15.88%) AWS
3 56 (8.31%) GitHub
4 42 (6.23%) PaaS
5 37 (5.49%) Power Platform
6 33 (4.90%) SaaS
6 33 (4.90%) Serverless
7 29 (4.30%) IaaS
8 25 (3.71%) Amazon S3
8 25 (3.71%) Azure Active Directory
9 21 (3.12%) AWS CloudFormation
10 19 (2.82%) AWS Lambda
10 19 (2.82%) Azure Logic Apps
10 19 (2.82%) OpenShift
11 18 (2.67%) Azure Data Factory
11 18 (2.67%) GCP
12 13 (1.93%) Azure Key Vault
12 13 (1.93%) Microsoft 365
13 12 (1.78%) Azure Cosmos DB
13 12 (1.78%) Azure Storage
Communications & Networking
1 48 (7.12%) HTTP
2 30 (4.45%) TCP/IP
3 17 (2.52%) Internet
4 15 (2.23%) Firewall
5 14 (2.08%) IPv4
5 14 (2.08%) SNMP
6 13 (1.93%) BGP
6 13 (1.93%) Ethernet VPN
6 13 (1.93%) HSRP
6 13 (1.93%) HTTPS
6 13 (1.93%) MPLS
6 13 (1.93%) Network Security
6 13 (1.93%) RSVP
6 13 (1.93%) VPLS
6 13 (1.93%) VRRP
7 12 (1.78%) Cisco IOS
7 12 (1.78%) IOS XR
8 11 (1.63%) F5 BIG-IP GTM
8 11 (1.63%) F5 BIG-IP LTM
9 10 (1.48%) RTMP
Database & Business Intelligence
1 112 (16.62%) SQL Server
2 102 (15.13%) Relational Database
3 70 (10.39%) NoSQL
4 55 (8.16%) MongoDB
5 44 (6.53%) PostgreSQL
6 39 (5.79%) Oracle Database
7 36 (5.34%) Data Lake
8 34 (5.04%) Power BI
8 34 (5.04%) Tableau
9 33 (4.90%) Data Warehouse
10 31 (4.60%) RDBMS
11 30 (4.45%) SQL Server Integration Services
12 28 (4.15%) Big Data
13 26 (3.86%) Oracle Database 12c
14 25 (3.71%) MySQL
15 24 (3.56%) Parquet
16 18 (2.67%) Metadata
17 12 (1.78%) SQL Server Analysis Services
18 11 (1.63%) Hadoop
18 11 (1.63%) SQL Server 2008
Development Applications
1 172 (25.52%) Jenkins
2 148 (21.96%) Git (software)
3 102 (15.13%) JIRA
4 56 (8.31%) Visual Studio
5 52 (7.72%) Bitbucket
6 42 (6.23%) Artifactory
6 42 (6.23%) Robot Framework
6 42 (6.23%) TeamCity
7 40 (5.93%) Subversion
8 36 (5.34%) Cucumber
9 35 (5.19%) Maven
10 32 (4.75%) Selenium
11 30 (4.45%) Oracle APEX
12 25 (3.71%) CppUnit
13 22 (3.26%) SonarQube
14 21 (3.12%) JUnit
14 21 (3.12%) Postman
15 17 (2.52%) Sonatype Nexus
16 15 (2.23%) Team Foundation Server
17 13 (1.93%) webpack
General
1 171 (25.37%) Finance
2 150 (22.26%) Social Skills
3 108 (16.02%) Banking
4 55 (8.16%) Analytical Skills
5 54 (8.01%) Investment Banking
6 31 (4.60%) Marketing
7 25 (3.71%) Front Office
7 25 (3.71%) Public Sector
8 17 (2.52%) Presentation Skills
9 13 (1.93%) Back Office
9 13 (1.93%) Retail
9 13 (1.93%) Telecoms
10 11 (1.63%) Documentation Skills
10 11 (1.63%) Manufacturing
11 10 (1.48%) Electronics
11 10 (1.48%) Influencing Skills
12 9 (1.34%) Financial Institution
13 8 (1.19%) Advertising
13 8 (1.19%) Automotive
13 8 (1.19%) Law
Job Titles
1 371 (55.04%) Developer
2 76 (11.28%) Java Developer
3 71 (10.53%) Architect
4 48 (7.12%) Senior Developer
5 39 (5.79%) Analyst
6 33 (4.90%) Python Developer
6 33 (4.90%) Solutions Architect
7 30 (4.45%) DevOps Engineer
7 30 (4.45%) Full Stack Developer
8 26 (3.86%) Front End Developer (Client-Side Developer)
9 25 (3.71%) C++ Developer
9 25 (3.71%) Investment Banking C++ Developer
10 23 (3.41%) Azure Engineer
10 23 (3.41%) Cloud Engineer
10 23 (3.41%) JavaScript Developer
11 21 (3.12%) Angular Developer
12 19 (2.82%) Business Analyst
13 18 (2.67%) Data Analyst
13 18 (2.67%) Senior Java Developer
13 18 (2.67%) Tester
Libraries, Frameworks & Software Standards
1 320 (47.48%) XML
2 221 (32.79%) REST
3 196 (29.08%) HTML
4 156 (23.15%) CSS
5 151 (22.40%) Web Services
6 111 (16.47%) .NET
7 106 (15.73%) SOAP
8 93 (13.80%) AngularJS
8 93 (13.80%) RESTful
9 87 (12.91%) React
10 78 (11.57%) Node.js
11 73 (10.83%) Spring
12 52 (7.72%) HTML5
13 48 (7.12%) .NET Core
14 47 (6.97%) Spring Boot
15 46 (6.82%) XSLT
16 43 (6.38%) jQuery
17 41 (6.08%) CSS3
18 39 (5.79%) .NET Framework
19 35 (5.19%) Kafka
Miscellaneous
1 34 (5.04%) User Experience
2 33 (4.90%) Data Structures
3 23 (3.41%) Self-Motivation
4 21 (3.12%) Cloud Native
5 18 (2.67%) Greenfield Project
6 17 (2.52%) Public Cloud
7 16 (2.37%) Reference Data
8 15 (2.23%) Mobile App
9 13 (1.93%) Data Protection Act
10 12 (1.78%) Client/Server
10 12 (1.78%) Private Cloud
11 11 (1.63%) Management Information System
12 10 (1.48%) Data Centre
12 10 (1.48%) Derivative
12 10 (1.48%) Legacy Applications
12 10 (1.48%) Taxonomies
13 9 (1.34%) Enterprise Software
13 9 (1.34%) Hybrid Cloud
14 7 (1.04%) Algorithms
15 6 (0.89%) Enterprise Cloud
Operating Systems
1 92 (13.65%) Linux
2 61 (9.05%) Windows
3 55 (8.16%) Unix
4 25 (3.71%) Android
5 15 (2.23%) Apple iOS
6 8 (1.19%) Mac OS
6 8 (1.19%) Windows Server
7 7 (1.04%) Red Hat Enterprise Linux
7 7 (1.04%) Ubuntu
8 2 (0.30%) Windows Server 2008
8 2 (0.30%) Windows Server 2012
9 1 (0.15%) Mac OS X
Processes & Methodologies
1 273 (40.50%) Agile Software Development
2 191 (28.34%) DevOps
3 165 (24.48%) CI/CD
4 128 (18.99%) Test Automation
5 123 (18.25%) Microservices
6 116 (17.21%) Problem-Solving
7 93 (13.80%) Scrum
8 81 (12.02%) TDD
9 72 (10.68%) Data Modelling
10 66 (9.79%) Continuous Integration
11 61 (9.05%) Analytics
12 58 (8.61%) BDD
12 58 (8.61%) Business Intelligence
13 55 (8.16%) SDLC
13 55 (8.16%) SOA
13 55 (8.16%) Unit Testing
14 52 (7.72%) Full Stack Development
15 51 (7.57%) Front End Development
16 50 (7.42%) ETL
17 49 (7.27%) Workflow
Programming Languages
1 227 (33.68%) JavaScript
1 227 (33.68%) SQL
2 209 (31.01%) Java
3 166 (24.63%) Python
4 131 (19.44%) C#
5 47 (6.97%) PowerShell
6 34 (5.04%) C++
7 33 (4.90%) TypeScript
8 31 (4.60%) Ruby
9 28 (4.15%) T-SQL
10 25 (3.71%) Java 8
11 22 (3.26%) Shell Script
12 21 (3.12%) ES6
13 20 (2.97%) PL/SQL
14 19 (2.82%) Kotlin
15 18 (2.67%) Bash
16 16 (2.37%) PHP
16 16 (2.37%) SPARQL
17 15 (2.23%) Java 11
18 14 (2.08%) Apple Swift
Qualifications
1 42 (6.23%) Degree
2 41 (6.08%) Security Cleared
3 37 (5.49%) SC Cleared
4 13 (1.93%) DV Cleared
5 11 (1.63%) CCIE
5 11 (1.63%) Cisco Certification
6 8 (1.19%) Computer Science Degree
7 7 (1.04%) Master's Degree
8 6 (0.89%) CCIE Security
9 5 (0.74%) CCIE Service Provider
10 4 (0.59%) Microsoft Certification
10 4 (0.59%) Numerate Degree
10 4 (0.59%) PMI Certification
10 4 (0.59%) PMP
11 3 (0.45%) PRINCE2 Certification
11 3 (0.45%) RHCE
12 2 (0.30%) CEH
12 2 (0.30%) CISSP
12 2 (0.30%) CSSLP
12 2 (0.30%) GIAC
Quality Assurance & Compliance
1 34 (5.04%) QA
2 24 (3.56%) Data Quality
3 11 (1.63%) Accessibility
4 6 (0.89%) ISO 20022
4 6 (0.89%) WCAG
5 5 (0.74%) GDPR
5 5 (0.74%) PCI DSS
6 3 (0.45%) ISO 15022
7 2 (0.30%) Actionable Recommendations
7 2 (0.30%) HL7
7 2 (0.30%) SLA
8 1 (0.15%) ISO/IEC 27001
8 1 (0.15%) MiFID
8 1 (0.15%) SOC 1
8 1 (0.15%) SOC 2
System Software
1 74 (10.98%) Docker
2 33 (4.90%) Active Directory
3 7 (1.04%) Virtual Machines
4 4 (0.59%) vSphere
5 3 (0.45%) VMware Infrastructure
6 2 (0.30%) Hyper-V
6 2 (0.30%) VirtualBox
7 1 (0.15%) HDFS
7 1 (0.15%) KVM
7 1 (0.15%) LXC
7 1 (0.15%) Oracle RAC
7 1 (0.15%) Virtual Desktop
Systems Management
1 83 (12.31%) Ansible
2 74 (10.98%) Kubernetes
3 51 (7.57%) Terraform
4 25 (3.71%) BladeLogic
4 25 (3.71%) Puppet
5 16 (2.37%) Netcool
6 15 (2.23%) Kibana
7 10 (1.48%) logstash
8 8 (1.19%) Single Sign-On
9 7 (1.04%) Grafana
10 6 (0.89%) FortiGate
10 6 (0.89%) Nagios
10 6 (0.89%) Packer
10 6 (0.89%) Prometheus
11 4 (0.59%) CA Wily
11 4 (0.59%) Marathon
11 4 (0.59%) Mesos
11 4 (0.59%) Opscode Chef
11 4 (0.59%) vCenter Server
12 3 (0.45%) HP SiteScope
Vendors
1 112 (16.62%) Microsoft
2 84 (12.46%) Oracle
3 29 (4.30%) Google
3 29 (4.30%) Splunk
4 28 (4.15%) AppDynamics
5 26 (3.86%) Salesforce.com
6 25 (3.71%) Databricks
6 25 (3.71%) FIS
6 25 (3.71%) SunGard
7 20 (2.97%) IBM
8 19 (2.82%) New Relic
9 15 (2.23%) Verint
10 14 (2.08%) Cisco
10 14 (2.08%) SAP
10 14 (2.08%) ServiceNow
11 13 (1.93%) MuleSoft
11 13 (1.93%) Nokia
12 11 (1.63%) F5
13 10 (1.48%) Talend
14 9 (1.34%) Cloudera