Period
to 17 February 2019

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 17 February 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
UK
6 months to
17 Feb 2019
Same period 2018 Same period 2017
Rank 99 104 95
Rank change year-on-year +5 -9 +66
Contract jobs citing JSON 2,478 2,342 2,381
As % of all contract IT jobs advertised in the UK 2.54% 2.33% 2.48%
As % of the Libraries, Frameworks & Software Standards category 7.50% 7.29% 7.87%
Number of daily rates quoted 1,608 1,618 1,628
UK median daily rate £486 £450 £430
Median daily rate % change year-on-year +8.06% +4.65% +7.50%
10th Percentile £350 £319 £313
90th Percentile £625 £601 £575
UK excluding London median daily rate £450 £450 £410
% change year-on-year - +9.76% +5.81%
Number of hourly rates quoted 14 15 26
UK median hourly rate £35.00 £62.50 £35.50
Median hourly rate % change year-on-year -44.00% +76.06% -17.92%
10th Percentile £21.30 £26.35 £23.63
90th Percentile £62.49 £63.75 £44.13
UK excluding London median hourly rate £35.00 £62.50 £36.00
% change year-on-year -44.00% +73.61% -28.00%

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 33,020 32,118 30,258
As % of all contract IT jobs advertised in the UK 33.82% 31.93% 31.53%
Number of daily rates quoted 23,208 22,866 20,929
UK median daily rate £485 £463 £425
Median daily rate % change year-on-year +4.86% +8.82% +2.41%
10th Percentile £325 £313 £300
90th Percentile £638 £625 £600
UK excluding London median daily rate £425 £400 £400
% change year-on-year +6.25% - +6.67%
Number of hourly rates quoted 295 335 338
UK median hourly rate £41.53 £40.00 £40.00
Median hourly rate % change year-on-year +3.83% - +3.90%
10th Percentile £17.70 £18.10 £15.43
90th Percentile £60.15 £52.50 £52.00
UK excluding London median hourly rate £41.85 £41.56 £38.75
% change year-on-year +0.70% +7.24% -0.32%

JSON
Job Vacancy Trend

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

Job vacancy trend for JSON in the UK

JSON
Contractor Daily Rate Trend

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

Contractor daily rate trend for JSON in the UK

JSON
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing JSON over the 6 months to 17 February 2019.

Contractor daily rate histogram for JSON in the UK

JSON
Contractor Hourly Rate Trend

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

Contractor hourly rate trend for JSON in the UK

JSON
Contractor Hourly Rate Histogram

The hourly rate distribution of IT jobs citing JSON over the 6 months to 17 February 2019.

Contractor 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 17 February 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
England +6 2,291 £500 +6.38% 699
UK excluding London +7 1,370 £450 - 511
London +3 1,060 £520 +9.47% 234
South East +33 513 £454 -2.16% 137
Midlands +19 233 £450 +9.09% 79
North of England -26 219 £444 +4.41% 141
West Midlands +25 179 £465 +9.41% 31
South West +20 165 £500 +25.00% 53
Scotland +26 124 £425 +6.25% 30
North West -35 104 £450 +12.50% 90
East of England -45 97 £525 +5.00% 55
Yorkshire +29 87 £413 -6.25% 41
East Midlands -10 50 £400 - 48
Wales +18 28 £400 - 10
North East -20 28 £473 -0.53% 10
Northern Ireland -12 3 - - 6
Channel Islands -1 2 - -

For the 6 months to 17 February 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 with a requirement for JSON.

1 1,362 (54.96%) Agile Software Development
2 1,063 (42.90%) Java
3 1,038 (41.89%) XML
4 978 (39.47%) REST
5 838 (33.82%) JavaScript
6 830 (33.49%) Git (software)
7 712 (28.73%) TDD
8 679 (27.40%) HTML
9 653 (26.35%) Web Services
10 651 (26.27%) SQL
11 616 (24.86%) SOAP
12 603 (24.33%) Jenkins
13 564 (22.76%) CSS
14 547 (22.07%) RESTful
15 523 (21.11%) Scrum
16 512 (20.66%) Microsoft Azure
17 508 (20.50%) Linux
18 503 (20.30%) Continuous Integration
19 497 (20.06%) Test Automation
20 485 (19.57%) C#
21 463 (18.68%) Microservices
22 462 (18.64%) DevOps
23 431 (17.39%) .NET
24 424 (17.11%) Spring
25 410 (16.55%) Finance
26 407 (16.42%) AngularJS
27 382 (15.42%) HTML5
28 367 (14.81%) JIRA
29 364 (14.69%) SQL Server
30 354 (14.29%) BDD

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
1 227 (9.16%) Confluence
2 144 (5.81%) Apache
3 119 (4.80%) Elasticsearch
4 86 (3.47%) JBoss
5 82 (3.31%) CMS
6 71 (2.87%) WebLogic
7 62 (2.50%) Tomcat
8 61 (2.46%) Apache Spark
9 52 (2.10%) Mule
10 50 (2.02%) nginx
11 47 (1.90%) Oracle SOA Suite
12 42 (1.69%) SharePoint
13 38 (1.53%) Apache Solr
14 37 (1.49%) WebSphere
15 32 (1.29%) IIS
16 30 (1.21%) Cloud Foundry
17 25 (1.01%) Oracle Service Bus
18 24 (0.97%) Adobe Experience Manager
19 20 (0.81%) Skype for Business
20 17 (0.69%) OpenStack
Applications
1 52 (2.10%) Microsoft Excel
2 20 (0.81%) Photoshop
3 16 (0.65%) Chatbot
4 9 (0.36%) Adobe Illustrator
5 8 (0.32%) Microsoft Office
6 3 (0.12%) MS Visio
7 2 (0.081%) Microsoft PowerPoint
7 2 (0.081%) Microsoft Project
8 1 (0.040%) Adobe Creative Suite
8 1 (0.040%) InfoPath
8 1 (0.040%) InVision
8 1 (0.040%) Mingle
8 1 (0.040%) S-PLUS
8 1 (0.040%) UXPin
Business Applications
1 19 (0.77%) Dynamics CRM
2 9 (0.36%) Salesforce.com CRM
2 9 (0.36%) SAP FI-CA
2 9 (0.36%) SAP PSCD
3 7 (0.28%) Workday HCM
4 6 (0.24%) Oracle BPM
5 4 (0.16%) Fredhopper
5 4 (0.16%) Magento
5 4 (0.16%) Oracle EBS
5 4 (0.16%) Payment Gateway
5 4 (0.16%) Remedy ITSM
6 3 (0.12%) Distributed Ledger
7 2 (0.081%) BusinessWorks
7 2 (0.081%) Dynamics AX
7 2 (0.081%) Dynamics NAV
7 2 (0.081%) Eloqua
7 2 (0.081%) OpenCart
7 2 (0.081%) R3 Corda
7 2 (0.081%) SAP Hybris
7 2 (0.081%) TIBCO iProcess
Cloud Services
1 512 (20.66%) Microsoft Azure
2 296 (11.95%) Amazon AWS
3 177 (7.14%) PaaS
4 169 (6.82%) GitHub
5 161 (6.50%) IaaS
6 103 (4.16%) SaaS
7 89 (3.59%) Serverless
8 83 (3.35%) npm
9 63 (2.54%) Amazon EC2
10 59 (2.38%) Amazon S3
11 49 (1.98%) AWS Lambda
12 47 (1.90%) Azure Active Directory
12 47 (1.90%) Boomi
12 47 (1.90%) OpenShift
13 46 (1.86%) Google Analytics
14 45 (1.82%) Apigee
15 37 (1.49%) Google Cloud Platform
16 34 (1.37%) Office 365
17 33 (1.33%) Amazon SQS
18 32 (1.29%) Azure Functions
Communications & Networking
1 232 (9.36%) HTTP
2 98 (3.95%) SSL
3 60 (2.42%) VPN
4 52 (2.10%) TCP/IP
5 46 (1.86%) Firewall
6 29 (1.17%) DNS
7 25 (1.01%) Network Security
8 20 (0.81%) Skype
9 18 (0.73%) Reverse Proxy
10 15 (0.61%) Internet
11 14 (0.56%) HTTPS
12 13 (0.52%) Bluetooth
13 10 (0.40%) X.509
14 9 (0.36%) DHCP
14 9 (0.36%) VLAN
15 6 (0.24%) FTP
15 6 (0.24%) Intranet
15 6 (0.24%) IPsec
15 6 (0.24%) SAN
15 6 (0.24%) SSH
Database & Business Intelligence
1 364 (14.69%) SQL Server
2 260 (10.49%) Relational Database
3 200 (8.07%) MongoDB
4 191 (7.71%) NoSQL
5 179 (7.22%) MySQL
6 148 (5.97%) PostgreSQL
7 115 (4.64%) Hadoop
8 110 (4.44%) Big Data
9 78 (3.15%) SQL Server Integration Services
10 74 (2.99%) HBase
11 69 (2.78%) Data Warehouse
12 65 (2.62%) RDBMS
13 48 (1.94%) Apache Cassandra
14 45 (1.82%) Parquet
15 43 (1.74%) Oracle Database
16 41 (1.65%) Power BI
17 39 (1.57%) SQL Server 2016
18 36 (1.45%) SQL Server Reporting Services
19 34 (1.37%) SQLite
20 31 (1.25%) Azure SQL Database
Development Applications
1 830 (33.49%) Git (software)
2 603 (24.33%) Jenkins
3 367 (14.81%) JIRA
4 218 (8.80%) JUnit
5 208 (8.39%) Subversion
6 199 (8.03%) Selenium
7 190 (7.67%) Cucumber
8 178 (7.18%) Maven
9 124 (5.00%) Visual Studio
10 117 (4.72%) Team Foundation Server
11 116 (4.68%) Eclipse
12 106 (4.28%) Visual Studio Team System
13 101 (4.08%) IntelliJ
14 93 (3.75%) Gradle
15 81 (3.27%) SoapUI
16 73 (2.95%) TeamCity
17 72 (2.91%) gulp
18 64 (2.58%) Grunt
19 63 (2.54%) Xcode
20 62 (2.50%) Gatling
General
1 410 (16.55%) Finance
2 207 (8.35%) Banking
3 65 (2.62%) Marketing
4 49 (1.98%) Retail
5 48 (1.94%) Manufacturing
6 45 (1.82%) Front Office
7 44 (1.78%) Telecoms
8 40 (1.61%) Games
9 38 (1.53%) Electronics
10 35 (1.41%) Investment Banking
11 24 (0.97%) Advertising
12 22 (0.89%) Back Office
13 17 (0.69%) Legal
13 17 (0.69%) Publishing
14 15 (0.61%) Financial Institution
15 13 (0.52%) Automotive
15 13 (0.52%) Pharmaceutical
16 12 (0.48%) Law
17 10 (0.40%) Online Betting
18 9 (0.36%) French Language
Job Titles
1 1,531 (61.78%) Developer
2 377 (15.21%) Java Developer
3 253 (10.21%) Architect
4 182 (7.34%) Senior Developer
5 156 (6.30%) .NET Developer
6 113 (4.56%) C# Developer
7 110 (4.44%) DevOps Engineer
8 109 (4.40%) React Developer
9 105 (4.24%) Scala Developer
10 100 (4.04%) Tester
11 99 (4.00%) Agile Developer
12 96 (3.87%) Full Stack Developer
13 94 (3.79%) Front End Developer (Client-Side Developer)
14 88 (3.55%) iOS Developer
15 80 (3.23%) Azure Engineer
16 77 (3.11%) Senior Java Developer
16 77 (3.11%) Software Engineer
17 73 (2.95%) Android Developer
18 70 (2.82%) Angular Developer
18 70 (2.82%) JavaScript Developer
Libraries, Frameworks & Software Standards
1 1,038 (41.89%) XML
2 978 (39.47%) REST
3 679 (27.40%) HTML
4 653 (26.35%) Web Services
5 616 (24.86%) SOAP
6 564 (22.76%) CSS
7 547 (22.07%) RESTful
8 431 (17.39%) .NET
9 424 (17.11%) Spring
10 407 (16.42%) AngularJS
11 382 (15.42%) HTML5
12 345 (13.92%) Node.js
13 326 (13.16%) jQuery
14 259 (10.45%) React
15 187 (7.55%) CSS3
16 158 (6.38%) Ajax
17 153 (6.17%) J2EE
17 153 (6.17%) Spring Boot
18 152 (6.13%) Twitter Bootstrap
19 150 (6.05%) .NET Framework
Miscellaneous
1 182 (7.34%) Mobile App
2 151 (6.09%) Analytical Skills
3 124 (5.00%) Greenfield Project
4 104 (4.20%) User Experience
5 84 (3.39%) Enterprise Software
6 81 (3.27%) Self-Motivation
7 61 (2.46%) Virtual Team
8 52 (2.10%) Data Structures
9 50 (2.02%) Fintech
10 46 (1.86%) Linux Command Line
11 29 (1.17%) Reference Data
12 28 (1.13%) Enterprise Cloud
13 27 (1.09%) Clustering
14 24 (0.97%) iPhone
14 24 (0.97%) Management Information System
14 24 (0.97%) Mobile Banking
14 24 (0.97%) Public Cloud
15 23 (0.93%) DataPower
16 21 (0.85%) PKI
17 20 (0.81%) Fat Client
Operating Systems
1 508 (20.50%) Linux
2 221 (8.92%) Windows
3 193 (7.79%) Unix
4 163 (6.58%) Android
5 160 (6.46%) Apple iOS
6 60 (2.42%) Red Hat Enterprise Linux
7 48 (1.94%) Ubuntu
8 35 (1.41%) CentOS
9 21 (0.85%) Windows Server
10 12 (0.48%) Mac OS X
11 7 (0.28%) Windows 7
11 7 (0.28%) Windows 8
12 5 (0.20%) Fedora
12 5 (0.20%) Mac OS
12 5 (0.20%) Windows Server 2012
13 4 (0.16%) Windows Mobile
14 3 (0.12%) AIX
14 3 (0.12%) Debian
15 2 (0.081%) Embedded Linux
16 1 (0.040%) HPUX
Processes & Methodologies
1 1,362 (54.96%) Agile Software Development
2 712 (28.73%) TDD
3 523 (21.11%) Scrum
4 503 (20.30%) Continuous Integration
5 497 (20.06%) Test Automation
6 463 (18.68%) Microservices
7 462 (18.64%) DevOps
8 354 (14.29%) BDD
9 340 (13.72%) MVC
10 249 (10.05%) Problem-Solving
11 234 (9.44%) Unit Testing
12 218 (8.80%) Open Source
13 213 (8.60%) Software Engineering
14 193 (7.79%) SOA
15 164 (6.62%) OO
16 163 (6.58%) Configuration Management
17 157 (6.34%) Front End Development
18 151 (6.09%) Analytics
19 149 (6.01%) Data Modelling
20 142 (5.73%) Continuous Delivery
Programming Languages
1 1,063 (42.90%) Java
2 838 (33.82%) JavaScript
3 651 (26.27%) SQL
4 485 (19.57%) C#
5 330 (13.32%) Python
6 207 (8.35%) Java 8
6 207 (8.35%) PowerShell
7 192 (7.75%) Scala
8 160 (6.46%) Ruby
9 110 (4.44%) Groovy
10 96 (3.87%) Apple Swift
10 96 (3.87%) PL/SQL
11 86 (3.47%) PHP
12 84 (3.39%) Objective-C
13 82 (3.31%) TypeScript
14 81 (3.27%) T-SQL
15 80 (3.23%) Bash Shell
16 77 (3.11%) Perl
17 75 (3.03%) Shell Script
18 70 (2.82%) C++
Qualifications
1 158 (6.38%) Security Cleared
2 146 (5.89%) Degree
3 112 (4.52%) SC Cleared
4 80 (3.23%) BPSS Clearance
5 53 (2.14%) Computer Science Degree
6 32 (1.29%) DV Cleared
7 24 (0.97%) Numerate Degree
8 20 (0.81%) AWS Certification
9 16 (0.65%) ISTQB
10 13 (0.52%) ISEB
10 13 (0.52%) Master's Degree
11 12 (0.48%) DBS Check
12 10 (0.40%) ISTQB Foundation Certification
13 7 (0.28%) Microsoft Certification
14 5 (0.20%) CISSP
14 5 (0.20%) CTC Cleared
15 3 (0.12%) SSCP
16 2 (0.081%) Cisco Certification
16 2 (0.081%) OCA
16 2 (0.081%) Oracle Certification
Quality Assurance & Compliance
1 114 (4.60%) QA
2 30 (1.21%) HMG Security Policy Framework
3 29 (1.17%) Data Quality
3 29 (1.17%) HMG Infosec
3 29 (1.17%) JSP 440
4 14 (0.56%) WCAG
5 10 (0.40%) ISO/IEC 27001
5 10 (0.40%) PCI DSS
5 10 (0.40%) PSD2
6 8 (0.32%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
7 6 (0.24%) Basel III
8 5 (0.20%) GDPR
8 5 (0.20%) ISO 9001
9 4 (0.16%) Disclosure Scotland
9 4 (0.16%) HL7
9 4 (0.16%) IFRS
9 4 (0.16%) IFRS 9
9 4 (0.16%) Solvency II
9 4 (0.16%) TickIT
10 3 (0.12%) ISO 20022
System Software
1 348 (14.04%) Docker
2 60 (2.42%) Active Directory
3 52 (2.10%) Apache ZooKeeper
4 49 (1.98%) HDFS
5 14 (0.56%) VMware Infrastructure
6 11 (0.44%) Virtual Machines
7 8 (0.32%) Hyper-V
8 6 (0.24%) Postfix
9 4 (0.16%) OpenAM
10 2 (0.081%) Apache Flume
10 2 (0.081%) KVM
10 2 (0.081%) NFS
11 1 (0.040%) iptables
11 1 (0.040%) Microsoft App-V
11 1 (0.040%) Terminal Server
11 1 (0.040%) XenApp
11 1 (0.040%) XenDesktop
Systems Management
1 108 (4.36%) Ansible
2 90 (3.63%) Puppet
3 82 (3.31%) Kubernetes
4 66 (2.66%) Kibana
5 65 (2.62%) Terraform
6 43 (1.74%) Hadoop YARN
7 36 (1.45%) Grafana
7 36 (1.45%) Opscode Chef
8 28 (1.13%) logstash
9 23 (0.93%) Prometheus
10 16 (0.65%) Suricata
11 15 (0.61%) SCOrch
12 14 (0.56%) Single Sign-On
13 12 (0.48%) CloudForms
14 11 (0.44%) HockeyApp
15 10 (0.40%) Rancher
15 10 (0.40%) SCCM
16 8 (0.32%) SCOM
17 6 (0.24%) Rundeck
18 5 (0.20%) CloudHub
Vendors
1 320 (12.91%) Microsoft
2 260 (10.49%) Oracle
3 182 (7.34%) Google
4 95 (3.83%) WSO2
5 74 (2.99%) SAP
6 63 (2.54%) Adobe
7 47 (1.90%) Dell
7 47 (1.90%) Splunk
8 44 (1.78%) webMethods
9 43 (1.74%) Apple
10 42 (1.69%) IBM
10 42 (1.69%) Talend
11 40 (1.61%) MuleSoft
12 38 (1.53%) ServiceNow
13 34 (1.37%) Atlassian
14 32 (1.29%) Xamarin
15 28 (1.13%) Salesforce.com
16 26 (1.05%) Informatica
17 24 (0.97%) Red Hat
18 20 (0.81%) VMware