Period
to 14 October 2019

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 14 October 2019 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
14 Oct 2019
Same period 2018 Same period 2017
Rank 116 121 102
Rank change year-on-year +5 -19 +5
Contract jobs citing JSON 868 1,059 1,151
As % of all contract IT jobs advertised in London 2.34% 2.32% 2.58%
As % of the Libraries, Frameworks & Software Standards category 6.44% 5.88% 6.98%
Number of daily rates quoted 556 803 856
London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +5.56%
10th Percentile £366 £375 £350
90th Percentile £703 £650 £635
England median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% +5.88%
Number of hourly rates quoted 11 1 2
London median hourly rate £63.33 £35.00 £32.50
Median hourly rate % change year-on-year +80.94% +7.69% -36.27%
10th Percentile £21.25 £35.00 £21.45
90th Percentile £122.50 £35.00 £41.95
England median hourly rate £55.00 £35.00 £45.00
% change year-on-year +57.14% -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 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 13,487 18,003 16,483
As % of all contract IT jobs advertised in London 36.32% 39.39% 36.98%
Number of daily rates quoted 10,086 13,546 12,486
London median daily rate £525 £525 £500
Median daily rate % change year-on-year - +5.00% +11.11%
10th Percentile £375 £375 £350
90th Percentile £688 £675 £650
England median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% +5.88%
Number of hourly rates quoted 71 87 91
London median hourly rate £47.50 £43.50 £30.00
Median hourly rate % change year-on-year +9.20% +45.00% -29.41%
10th Percentile £21.25 £20.30 £18.50
90th Percentile £63.75 £72.22 £50.00
England median hourly rate £45.00 £41.57 £40.00
% change year-on-year +8.25% +3.93% +6.67%

JSON
Job Vacancy Trend in London

Job postings citing JSON as a percentage of all IT jobs advertised in London.

Job vacancy trend for JSON in London

JSON
Contractor Daily Rate Trend in London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing JSON in London.

Contractor daily rate trend for JSON in London

JSON
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing JSON in London over the 6 months to 14 October 2019.

Contractor daily rate histogram for JSON in London

JSON
Contractor Hourly Rate Trend in London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing JSON in London.

Contractor hourly rate trend for JSON in London

JSON
Contractor Hourly Rate Histogram in London

The hourly rate distribution of IT jobs citing JSON in London over the 6 months to 14 October 2019.

Contractor hourly rate histogram 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 14 October 2019. 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
Central London -12 155 £500 - 54
South London +30 43 £513 +7.89% 13
West London +40 38 £425 -2.86% 27
East London +13 31 £538 -4.44% 6
North London +1 1 £388 -13.89% 1
JSON
England

For the 6 months to 14 October 2019, 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.

1 427 (49.19%) Agile Software Development
2 332 (38.25%) JavaScript
3 299 (34.45%) Java
4 297 (34.22%) XML
5 269 (30.99%) REST
6 251 (28.92%) SQL
7 233 (26.84%) Git (software)
8 215 (24.77%) HTML
9 206 (23.73%) Azure
10 198 (22.81%) DevOps
11 197 (22.70%) CSS
11 197 (22.70%) Linux
12 194 (22.35%) Jenkins
12 194 (22.35%) AWS
13 185 (21.31%) Microservices
13 185 (21.31%) Scrum
14 176 (20.28%) Python
15 174 (20.05%) Web Services
16 166 (19.12%) TDD
17 163 (18.78%) SQL Server
18 160 (18.43%) AngularJS
19 158 (18.20%) RESTful
20 152 (17.51%) C#
21 145 (16.71%) Docker
22 144 (16.59%) .NET
23 142 (16.36%) Finance
24 134 (15.44%) Test Automation
25 133 (15.32%) Security Cleared
26 124 (14.29%) JIRA
27 121 (13.94%) Node.js

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 86 (9.91%) Confluence
2 50 (5.76%) SharePoint
3 43 (4.95%) Elasticsearch
4 29 (3.34%) Apache Spark
5 23 (2.65%) Apache
6 17 (1.96%) JBoss
6 17 (1.96%) Tomcat
7 14 (1.61%) ArcGIS
7 14 (1.61%) GeoServer
8 13 (1.50%) CMS
8 13 (1.50%) Magnolia
9 12 (1.38%) WebLogic
10 11 (1.27%) Cloud Foundry
11 10 (1.15%) Jupyter
11 10 (1.15%) Mule
12 9 (1.04%) Oracle SOA Suite
13 8 (0.92%) IIS
13 8 (0.92%) WebSphere
14 7 (0.81%) Anypoint
15 6 (0.69%) Oracle Self-Service HR
Applications
1 23 (2.65%) Microsoft Excel
2 7 (0.81%) MS Visio
3 6 (0.69%) Microsoft Office
4 2 (0.23%) Chatbot
4 2 (0.23%) Microsoft PowerPoint
5 1 (0.12%) Sketch
5 1 (0.12%) UXPin
Business Applications
1 26 (3.00%) Sparx Enterprise Architect
2 16 (1.84%) Dynamics CRM
3 15 (1.73%) BusinessWorks
4 11 (1.27%) Dynamics AX
5 9 (1.04%) Dynamics NAV
6 5 (0.58%) Oracle BPM
6 5 (0.58%) Remedy ITSM
7 3 (0.35%) Distributed Ledger
8 2 (0.23%) NetSuite
8 2 (0.23%) Payment Gateway
9 1 (0.12%) Magento
9 1 (0.12%) Oracle Receivables
9 1 (0.12%) WebTrends
Cloud Services
1 206 (23.73%) Azure
2 194 (22.35%) AWS
3 61 (7.03%) GitHub
4 42 (4.84%) GCP
5 41 (4.72%) PaaS
6 39 (4.49%) IaaS
6 39 (4.49%) Power Platform
7 35 (4.03%) Office 365
8 33 (3.80%) Dynamics 365
9 29 (3.34%) OpenShift
10 28 (3.23%) Amazon S3
11 27 (3.11%) Amazon EC2
12 24 (2.76%) AWS CloudFormation
13 21 (2.42%) npm
13 21 (2.42%) Serverless
14 20 (2.30%) Datadog
15 18 (2.07%) AWS Lambda
16 15 (1.73%) SaaS
17 13 (1.50%) Amazon ELB
18 11 (1.27%) Adobe Analytics
Communications & Networking
1 54 (6.22%) HTTP
2 24 (2.76%) VPN
3 17 (1.96%) Internet
4 9 (1.04%) SSH
5 8 (0.92%) FTP
6 7 (0.81%) Intranet
7 6 (0.69%) Firewall
7 6 (0.69%) HTTPS
8 4 (0.46%) Network Security
9 3 (0.35%) Cisco IOS
9 3 (0.35%) Modbus
9 3 (0.35%) Profibus
10 2 (0.23%) Anycast
10 2 (0.23%) Cisco ASA
10 2 (0.23%) Cisco ISE
10 2 (0.23%) Cisco Nexus
10 2 (0.23%) MPLS
10 2 (0.23%) Multicast
10 2 (0.23%) VLAN
10 2 (0.23%) VXLAN
Database & Business Intelligence
1 163 (18.78%) SQL Server
2 93 (10.71%) NoSQL
3 88 (10.14%) PostgreSQL
4 72 (8.29%) Relational Database
5 70 (8.06%) MySQL
6 64 (7.37%) MongoDB
7 50 (5.76%) Big Data
7 50 (5.76%) Data Warehouse
8 39 (4.49%) Power BI
9 36 (4.15%) SQL Server Integration Services
10 32 (3.69%) Amazon DynamoDB
11 29 (3.34%) Apache Cassandra
12 25 (2.88%) SQL Server Reporting Services
13 24 (2.76%) Amazon RDS
13 24 (2.76%) Hadoop
14 23 (2.65%) RDBMS
15 22 (2.53%) Data Lake
15 22 (2.53%) Oracle Database
16 21 (2.42%) HBase
17 16 (1.84%) BigQuery
Development Applications
1 233 (26.84%) Git (software)
2 194 (22.35%) Jenkins
3 124 (14.29%) JIRA
4 62 (7.14%) Maven
5 60 (6.91%) Selenium
6 42 (4.84%) Sonatype Nexus
6 42 (4.84%) Visual Studio Team System
7 38 (4.38%) Subversion
7 38 (4.38%) TeamCity
8 33 (3.80%) JUnit
9 29 (3.34%) Gradle
10 28 (3.23%) Bitbucket
11 25 (2.88%) SonarQube
12 24 (2.76%) NUnit
13 20 (2.30%) Mercurial
14 19 (2.19%) Team Foundation Server
14 19 (2.19%) Visual Studio
15 18 (2.07%) IntelliJ
16 17 (1.96%) Eclipse
17 16 (1.84%) Mockito
General
1 142 (16.36%) Finance
2 68 (7.83%) Banking
3 31 (3.57%) Public Sector
4 27 (3.11%) Retail
5 25 (2.88%) Marketing
6 23 (2.65%) Games
7 17 (1.96%) Back Office
8 15 (1.73%) Advertising
8 15 (1.73%) Law
9 13 (1.50%) Front Office
10 11 (1.27%) Publishing
11 10 (1.15%) Investment Banking
12 9 (1.04%) Financial Institution
12 9 (1.04%) Retail Banking
13 6 (0.69%) Multimedia
14 4 (0.46%) Legal
14 4 (0.46%) Pharmaceutical
15 3 (0.35%) Automotive
16 2 (0.23%) Electronics
16 2 (0.23%) Telecoms
Job Titles
1 490 (56.45%) Developer
2 105 (12.10%) Java Developer
3 92 (10.60%) Architect
4 78 (8.99%) Senior Developer
5 58 (6.68%) DevOps Engineer
6 53 (6.11%) Front End Developer (Client-Side Developer)
7 49 (5.65%) React Developer
8 46 (5.30%) .NET Developer
9 43 (4.95%) Analyst
10 41 (4.72%) C# Developer
11 34 (3.92%) Cloud Engineer
12 32 (3.69%) Full Stack Developer
13 28 (3.23%) Tester
14 27 (3.11%) SQL Developer
15 26 (3.00%) Angular Developer
16 25 (2.88%) Consultant
16 25 (2.88%) Data Architect
17 23 (2.65%) JavaScript Developer
18 22 (2.53%) C# .NET Developer
19 21 (2.42%) Android Developer
Libraries, Frameworks & Software Standards
1 297 (34.22%) XML
2 269 (30.99%) REST
3 215 (24.77%) HTML
4 197 (22.70%) CSS
5 174 (20.05%) Web Services
6 160 (18.43%) AngularJS
7 158 (18.20%) RESTful
8 144 (16.59%) .NET
9 121 (13.94%) Node.js
10 117 (13.48%) SOAP
11 104 (11.98%) Spring
12 100 (11.52%) HTML5
13 95 (10.94%) React
14 90 (10.37%) jQuery
15 64 (7.37%) Kafka
16 61 (7.03%) .NET Framework
16 61 (7.03%) CSS3
16 61 (7.03%) Spring Boot
17 51 (5.88%) Hibernate
17 51 (5.88%) JSON Schema
Miscellaneous
1 69 (7.95%) Mobile App
2 59 (6.80%) User Experience
3 55 (6.34%) Analytical Skills
4 35 (4.03%) Enterprise Software
5 23 (2.65%) Self-Motivation
6 21 (2.42%) Enterprise Cloud
7 19 (2.19%) Greenfield Project
8 17 (1.96%) Data Structures
8 17 (1.96%) Virtual Team
9 15 (1.73%) Data Centre
9 15 (1.73%) Linux Command Line
10 12 (1.38%) Cloud Native
11 11 (1.27%) Client/Server
11 11 (1.27%) PKI
12 8 (0.92%) Management Information System
12 8 (0.92%) Online Games
12 8 (0.92%) Taxonomies
13 6 (0.69%) Derivative
13 6 (0.69%) N-Tier
13 6 (0.69%) Robotics
Operating Systems
1 197 (22.70%) Linux
2 67 (7.72%) Windows
3 56 (6.45%) Red Hat Enterprise Linux
4 40 (4.61%) Android
4 40 (4.61%) Unix
5 36 (4.15%) Apple iOS
6 11 (1.27%) CentOS
6 11 (1.27%) Windows Server
7 9 (1.04%) Mac OS X
8 7 (0.81%) Mac OS
9 6 (0.69%) Debian
9 6 (0.69%) Ubuntu
10 3 (0.35%) Mac OS X Server
11 2 (0.23%) Solaris
11 2 (0.23%) VMS
Processes & Methodologies
1 427 (49.19%) Agile Software Development
2 198 (22.81%) DevOps
3 185 (21.31%) Microservices
3 185 (21.31%) Scrum
4 166 (19.12%) TDD
5 134 (15.44%) Test Automation
6 119 (13.71%) Continuous Integration
7 96 (11.06%) BDD
8 89 (10.25%) MVC
9 88 (10.14%) Data Modelling
10 85 (9.79%) Open Source
11 79 (9.10%) Problem-Solving
12 78 (8.99%) Front End Development
13 72 (8.29%) Unit Testing
14 71 (8.18%) Kanban
14 71 (8.18%) SDLC
15 64 (7.37%) ETL
16 61 (7.03%) Analytics
17 59 (6.80%) Continuous Delivery
17 59 (6.80%) SOA
Programming Languages
1 332 (38.25%) JavaScript
2 299 (34.45%) Java
3 251 (28.92%) SQL
4 176 (20.28%) Python
5 152 (17.51%) C#
6 83 (9.56%) Bash Shell
7 76 (8.76%) Ruby
8 67 (7.72%) Perl
9 56 (6.45%) Java 8
10 49 (5.65%) Shell Script
11 44 (5.07%) PL/SQL
12 43 (4.95%) PowerShell
13 42 (4.84%) Scala
13 42 (4.84%) T-SQL
14 34 (3.92%) TypeScript
15 20 (2.30%) C++
16 19 (2.19%) Groovy
17 18 (2.07%) ES6
17 18 (2.07%) VBA
18 15 (1.73%) VB
Qualifications
1 133 (15.32%) Security Cleared
2 89 (10.25%) SC Cleared
3 49 (5.65%) Degree
4 27 (3.11%) RHCE
5 22 (2.53%) AWS Certification
6 17 (1.96%) DV Cleared
7 13 (1.50%) Computer Science Degree
8 9 (1.04%) Master's Degree
9 4 (0.46%) DBS Check
10 3 (0.35%) BPSS Clearance
10 3 (0.35%) Cisco Certification
10 3 (0.35%) PhD
11 2 (0.23%) CCNA
11 2 (0.23%) CISA
11 2 (0.23%) CISM
11 2 (0.23%) CISMP
11 2 (0.23%) CISSP
11 2 (0.23%) ISSMP
11 2 (0.23%) JNCIE
11 2 (0.23%) JNCIP
Quality Assurance & Compliance
1 40 (4.61%) QA
2 13 (1.50%) MiFID
3 10 (1.15%) Data Quality
4 6 (0.69%) ISO/IEC 27001
4 6 (0.69%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
4 6 (0.69%) NIST
4 6 (0.69%) PCI DSS
5 5 (0.58%) GDPR
6 4 (0.46%) SLA
7 3 (0.35%) PMO
8 2 (0.23%) HL7
8 2 (0.23%) IFRS
System Software
1 145 (16.71%) Docker
2 33 (3.80%) Active Directory
3 14 (1.61%) Virtual Machines
4 6 (0.69%) VMware Infrastructure
5 4 (0.46%) Postfix
5 4 (0.46%) VMware ESXi
6 3 (0.35%) Apache ZooKeeper
6 3 (0.35%) Firmware
6 3 (0.35%) HDFS
6 3 (0.35%) VMware Workstation
6 3 (0.35%) vSphere
7 2 (0.23%) ISA Server
8 1 (0.12%) GridGain
8 1 (0.12%) Hyper-V
8 1 (0.12%) OpenAM
8 1 (0.12%) OpenDJ
8 1 (0.12%) VirtualBox
Systems Management
1 65 (7.49%) Kubernetes
2 54 (6.22%) Opscode Chef
3 45 (5.18%) Terraform
4 28 (3.23%) Suricata
5 26 (3.00%) Puppet
6 14 (1.61%) Ansible
7 12 (1.38%) Control-M
8 7 (0.81%) Istio
8 7 (0.81%) logstash
9 6 (0.69%) Kibana
9 6 (0.69%) MIIS
9 6 (0.69%) Salt
10 5 (0.58%) Jamf Pro
11 4 (0.46%) yum
12 3 (0.35%) Enterprise Manager Cloud Control
12 3 (0.35%) Hadoop YARN
12 3 (0.35%) Norton AntiVirus
12 3 (0.35%) Single Sign-On
12 3 (0.35%) Symantec Endpoint Protection
12 3 (0.35%) vCenter Server
Vendors
1 117 (13.48%) Microsoft
2 110 (12.67%) Oracle
3 48 (5.53%) Google
4 47 (5.41%) Red Hat
5 37 (4.26%) Splunk
6 29 (3.34%) Qualys
7 27 (3.11%) Sparx
8 25 (2.88%) MuleSoft
9 21 (2.42%) SAP
10 19 (2.19%) Tableau
11 18 (2.07%) TIBCO
12 16 (1.84%) ServiceNow
13 15 (1.73%) ESRI
14 14 (1.61%) Salesforce.com
15 12 (1.38%) BMC
16 11 (1.27%) Adobe
17 10 (1.15%) Cadence
18 9 (1.04%) Cloudera
18 9 (1.04%) Databricks
18 9 (1.04%) IBM