Period
to 21 May 2019

The following table provides summary statistics for contract job vacancies advertised in Central 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 21 May 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
London > Central London
6 months to
21 May 2019
Same period 2018 Same period 2017
Rank 92 115 122
Rank change year-on-year +23 +7 -1
Contract jobs citing JSON 228 207 146
As % of all contract IT jobs advertised in Central London 2.69% 2.27% 2.02%
As % of the Libraries, Frameworks & Software Standards category 6.77% 5.77% 5.51%
Number of daily rates quoted 177 166 116
Central London median daily rate £525 £500 £450
Median daily rate % change year-on-year +5.00% +11.11% +5.88%
10th Percentile £413 £375 £319
90th Percentile £618 £594 £616
London median daily rate £500 £490 £475
% change year-on-year +2.04% +3.16% +7.95%
Number of hourly rates quoted 0 0 1
Central London median hourly rate - - £26.80
London median hourly rate £35.00 - £22.50

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 Central London with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
Central London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 3,368 3,585 2,648
As % of all contract IT jobs advertised in Central London 39.81% 39.32% 36.72%
Number of daily rates quoted 2,692 2,936 2,151
Central London median daily rate £525 £505 £475
Median daily rate % change year-on-year +3.96% +6.32% +4.40%
10th Percentile £406 £364 £325
90th Percentile £668 £650 £638
London median daily rate £525 £500 £475
% change year-on-year +5.00% +5.26% +3.83%
Number of hourly rates quoted 11 16 5
Central London median hourly rate £49.13 £22.00 £24.86
Median hourly rate % change year-on-year +123.32% -11.50% -42.94%
10th Percentile £32.50 £21.13 £23.98
90th Percentile £70.00 £127.50 £33.73
London median hourly rate £42.50 £44.21 £45.00
% change year-on-year -3.86% -1.76% +5.88%

JSON
Job Vacancy Trend in Central London

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

Job vacancy trend for JSON in Central London

JSON
Contractor Daily Rate Trend in Central London

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

Contractor daily rate trend for JSON in Central London

JSON
Contractor Daily Rate Histogram in Central London

The daily rate distribution of IT jobs citing JSON in Central London over the 6 months to 21 May 2019.

Contractor daily rate histogram for JSON in Central London

JSON
Contractor Hourly Rate Trend in Central London

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

Contractor hourly rate trend for JSON in Central London

JSON
Contract Job Locations in Central 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 Central London region over the 6 months to 21 May 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
City of London +4 145 £525 +5.00% 5
Southwark -19 19 £525 -
City of Westminster -11 10 £575 +21.05%
West End of London +1 9 £600 -
Kensington and Chelsea - 1 £325 -
JSON
London

For the 6 months to 21 May 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 Central London region with a requirement for JSON.

1 97 (42.54%) Agile Software Development
2 85 (37.28%) JavaScript
3 83 (36.40%) Java
4 82 (35.96%) REST
5 80 (35.09%) Git (software)
5 80 (35.09%) XML
6 72 (31.58%) HTML
7 70 (30.70%) DevOps
8 67 (29.39%) Microsoft Azure
9 60 (26.32%) Microservices
9 60 (26.32%) SOAP
10 58 (25.44%) CSS
11 56 (24.56%) SQL
12 53 (23.25%) Scrum
13 50 (21.93%) SQL Server
13 50 (21.93%) C#
14 46 (20.18%) Web Services
14 46 (20.18%) Python
14 46 (20.18%) Finance
14 46 (20.18%) Amazon AWS
14 46 (20.18%) Continuous Integration
15 45 (19.74%) Linux
15 45 (19.74%) .NET
16 43 (18.86%) jQuery
17 42 (18.42%) AngularJS
18 38 (16.67%) TDD
19 36 (15.79%) Microsoft
19 36 (15.79%) Jenkins
20 35 (15.35%) Team Foundation Server
20 35 (15.35%) HTML5

JSON
Co-occurring IT Skills in Central 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 21 (9.21%) Apache
2 12 (5.26%) Confluence
2 12 (5.26%) SharePoint
3 9 (3.95%) Elasticsearch
4 7 (3.07%) Cloud Foundry
5 6 (2.63%) WebSphere
6 5 (2.19%) nginx
7 4 (1.75%) CMS
7 4 (1.75%) JBoss
8 3 (1.32%) WebLogic
9 2 (0.88%) Adobe Experience Manager
9 2 (0.88%) OpenStack
9 2 (0.88%) Tomcat
10 1 (0.44%) Apache Spark
10 1 (0.44%) BizTalk Server
10 1 (0.44%) Drupal
10 1 (0.44%) EPiServer
10 1 (0.44%) Oracle SOA Suite
10 1 (0.44%) Sitecore CMS
10 1 (0.44%) WebSphere Application Server
Applications
1 11 (4.82%) Microsoft Excel
2 1 (0.44%) Adobe Illustrator
2 1 (0.44%) Microsoft Office
2 1 (0.44%) Photoshop
2 1 (0.44%) Sketch
Business Applications
1 3 (1.32%) Dynamics AX
1 3 (1.32%) Dynamics CRM
1 3 (1.32%) Dynamics NAV
2 1 (0.44%) Eloqua
2 1 (0.44%) Oracle BPM
Cloud Services
1 67 (29.39%) Microsoft Azure
2 46 (20.18%) Amazon AWS
3 18 (7.89%) GitHub
4 14 (6.14%) Amazon EC2
5 12 (5.26%) Office 365
6 11 (4.82%) OpenShift
7 9 (3.95%) Amazon CloudWatch
7 9 (3.95%) Amazon S3
7 9 (3.95%) AWS CloudFormation
7 9 (3.95%) IaaS
7 9 (3.95%) Virtual Private Cloud
8 8 (3.51%) Amazon Glacier
8 8 (3.51%) Amazon SQS
8 8 (3.51%) AWS CloudTrail
8 8 (3.51%) PaaS
8 8 (3.51%) Power Platform
8 8 (3.51%) SaaS
9 5 (2.19%) AWS Fargate
9 5 (2.19%) Yammer
10 4 (1.75%) Dynamics 365
Communications & Networking
1 16 (7.02%) HTTP
2 9 (3.95%) Firewall
2 9 (3.95%) TCP/IP
3 7 (3.07%) DNS
4 5 (2.19%) BGP
4 5 (2.19%) Cisco Nexus
4 5 (2.19%) Network Security
4 5 (2.19%) OSPF
4 5 (2.19%) VPN
5 4 (1.75%) Cisco ASA
5 4 (1.75%) Cisco Wireless
5 4 (1.75%) F5 BIG-IP GTM
5 4 (1.75%) F5 BIG-IP LTM
5 4 (1.75%) Multicast
5 4 (1.75%) VXLAN
5 4 (1.75%) Wireless
5 4 (1.75%) Wireshark
6 3 (1.32%) SSL
6 3 (1.32%) X.509
7 2 (0.88%) HTTPS
Database & Business Intelligence
1 50 (21.93%) SQL Server
2 31 (13.60%) Relational Database
3 25 (10.96%) MySQL
4 18 (7.89%) MongoDB
5 17 (7.46%) Big Data
6 16 (7.02%) NoSQL
7 14 (6.14%) Amazon RDS
7 14 (6.14%) PostgreSQL
8 9 (3.95%) Apache Cassandra
8 9 (3.95%) SQL Server Integration Services
9 8 (3.51%) Power BI
10 7 (3.07%) SQL Server 2012
11 4 (1.75%) Bigtable
11 4 (1.75%) Blockchain
11 4 (1.75%) Data Lake
11 4 (1.75%) Data Warehouse
12 3 (1.32%) Amazon Aurora
12 3 (1.32%) BigQuery
12 3 (1.32%) RDBMS
13 2 (0.88%) Amazon Redshift
Development Applications
1 80 (35.09%) Git (software)
2 36 (15.79%) Jenkins
3 35 (15.35%) Team Foundation Server
4 34 (14.91%) Visual Studio Team System
5 28 (12.28%) JIRA
6 15 (6.58%) Selenium
7 14 (6.14%) Subversion
8 11 (4.82%) Cucumber
8 11 (4.82%) Visual Studio
9 8 (3.51%) Gatling
10 7 (3.07%) Bitbucket
10 7 (3.07%) Sonatype Nexus
11 5 (2.19%) Atlassian Bamboo
11 5 (2.19%) JUnit
11 5 (2.19%) Mercurial
11 5 (2.19%) SoapUI
11 5 (2.19%) SpecFlow
12 4 (1.75%) Eclipse
12 4 (1.75%) JMeter
12 4 (1.75%) Maven
General
1 46 (20.18%) Finance
2 24 (10.53%) Banking
3 8 (3.51%) Marketing
4 7 (3.07%) Investment Banking
5 6 (2.63%) Retail Banking
6 3 (1.32%) Advertising
6 3 (1.32%) Electronics
6 3 (1.32%) Manufacturing
6 3 (1.32%) Telecoms
7 2 (0.88%) Publishing
8 1 (0.44%) Billing
8 1 (0.44%) French Language
8 1 (0.44%) Front Office
Job Titles
1 127 (55.70%) Developer
2 30 (13.16%) DevOps Engineer
3 25 (10.96%) Azure DevOps
3 25 (10.96%) Azure Engineer
4 24 (10.53%) Azure DevOps Engineer
5 23 (10.09%) Full Stack Developer
6 19 (8.33%) Java Developer
7 17 (7.46%) Angular Developer
8 16 (7.02%) Senior Developer
9 11 (4.82%) .NET Developer
9 11 (4.82%) Azure Developer
9 11 (4.82%) C# Developer
9 11 (4.82%) JavaScript Developer
9 11 (4.82%) Node.js Developer
10 10 (4.39%) Analyst
10 10 (4.39%) Architect
11 9 (3.95%) Python Developer
11 9 (3.95%) Ruby on Rails Developer
12 7 (3.07%) Android Developer
12 7 (3.07%) iOS Developer
Libraries, Frameworks & Software Standards
1 82 (35.96%) REST
2 80 (35.09%) XML
3 72 (31.58%) HTML
4 60 (26.32%) SOAP
5 58 (25.44%) CSS
6 46 (20.18%) Web Services
7 45 (19.74%) .NET
8 43 (18.86%) jQuery
9 42 (18.42%) AngularJS
10 35 (15.35%) HTML5
11 33 (14.47%) Node.js
12 30 (13.16%) RESTful
13 27 (11.84%) Spring
14 25 (10.96%) .NET Framework
14 25 (10.96%) Twitter Bootstrap
15 23 (10.09%) Kafka
16 22 (9.65%) Vue.js
17 21 (9.21%) CSS3
18 17 (7.46%) OAuth
19 16 (7.02%) OAuth2
Miscellaneous
1 21 (9.21%) Analytical Skills
1 21 (9.21%) Greenfield Project
1 21 (9.21%) Mobile App
2 14 (6.14%) Fintech
3 12 (5.26%) Data Structures
4 11 (4.82%) Clustering
4 11 (4.82%) Fat Client
4 11 (4.82%) Thin Client
5 10 (4.39%) User Experience
6 8 (3.51%) Enterprise Software
7 5 (2.19%) Self-Motivation
8 4 (1.75%) Data Centre
8 4 (1.75%) Linux Command Line
9 3 (1.32%) Taxonomies
10 2 (0.88%) Algorithms
10 2 (0.88%) Enterprise Cloud
10 2 (0.88%) NHS
10 2 (0.88%) Private Cloud
11 1 (0.44%) Reinsurance
11 1 (0.44%) Virtual Team
Operating Systems
1 45 (19.74%) Linux
2 14 (6.14%) Android
2 14 (6.14%) Windows
3 12 (5.26%) Apple iOS
4 9 (3.95%) Unix
5 2 (0.88%) Red Hat Enterprise Linux
5 2 (0.88%) Windows Server
6 1 (0.44%) Ubuntu
6 1 (0.44%) Windows Server 2012
Processes & Methodologies
1 97 (42.54%) Agile Software Development
2 70 (30.70%) DevOps
3 60 (26.32%) Microservices
4 53 (23.25%) Scrum
5 46 (20.18%) Continuous Integration
6 38 (16.67%) TDD
7 25 (10.96%) Test Automation
8 23 (10.09%) Continuous Deployment
8 23 (10.09%) User Stories
9 22 (9.65%) BDD
9 22 (9.65%) Open Source
10 21 (9.21%) MVC
11 20 (8.77%) OO
12 19 (8.33%) Web Development
13 18 (7.89%) Software Engineering
14 17 (7.46%) Unit Testing
14 17 (7.46%) Use Case
15 16 (7.02%) Data Modelling
15 16 (7.02%) SDLC
16 14 (6.14%) SOA
Programming Languages
1 85 (37.28%) JavaScript
2 83 (36.40%) Java
3 56 (24.56%) SQL
4 50 (21.93%) C#
5 46 (20.18%) Python
6 31 (13.60%) PowerShell
7 17 (7.46%) Bash Shell
8 14 (6.14%) Java 8
8 14 (6.14%) Ruby
9 13 (5.70%) TypeScript
10 11 (4.82%) Scala
11 9 (3.95%) Groovy
12 7 (3.07%) XPath
13 6 (2.63%) Clojure
14 5 (2.19%) C++
14 5 (2.19%) Go
14 5 (2.19%) Kotlin
14 5 (2.19%) PL/SQL
14 5 (2.19%) T-SQL
15 4 (1.75%) VB.NET
Qualifications
1 17 (7.46%) Degree
2 15 (6.58%) Security Cleared
3 13 (5.70%) SC Cleared
4 11 (4.82%) Numerate Degree
5 5 (2.19%) Cisco Certification
6 4 (1.75%) CCIE
6 4 (1.75%) CTC Cleared
7 2 (0.88%) DV Cleared
8 1 (0.44%) AWS Certification
8 1 (0.44%) DBS Check
Quality Assurance & Compliance
1 9 (3.95%) QA
2 8 (3.51%) Data Quality
3 4 (1.75%) Solvency II
4 1 (0.44%) PMO
System Software
1 28 (12.28%) Docker
2 10 (4.39%) Active Directory
3 6 (2.63%) Apache ZooKeeper
4 1 (0.44%) Hyper-V
4 1 (0.44%) VMware Infrastructure
Systems Management
1 26 (11.40%) Ansible
2 17 (7.46%) Kubernetes
3 4 (1.75%) Puppet
4 2 (0.88%) Kibana
4 2 (0.88%) Opscode Chef
5 1 (0.44%) Cacti
5 1 (0.44%) Grafana
5 1 (0.44%) logstash
5 1 (0.44%) Microsoft Data Protection Manager
5 1 (0.44%) SCCM
5 1 (0.44%) SCOM
5 1 (0.44%) Single Sign-On
5 1 (0.44%) Terraform
5 1 (0.44%) WSUS
Vendors
1 36 (15.79%) Microsoft
2 20 (8.77%) Oracle
3 11 (4.82%) hybris
4 6 (2.63%) IBM
4 6 (2.63%) Splunk
5 5 (2.19%) CheckPoint
5 5 (2.19%) Cisco
5 5 (2.19%) Fortinet
5 5 (2.19%) SolarWinds
6 4 (1.75%) Adobe
6 4 (1.75%) Arista
6 4 (1.75%) Atlassian
6 4 (1.75%) F5
6 4 (1.75%) Google
6 4 (1.75%) Palo Alto
6 4 (1.75%) Riverbed
6 4 (1.75%) Xamarin
7 3 (1.32%) Apple
7 3 (1.32%) SAP
8 2 (0.88%) webMethods