Period
to 22 August 2019

The following table provides summary statistics for contract job vacancies advertised in Hertfordshire 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 22 August 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
East of England > Hertfordshire
6 months to
22 Aug 2019
Same period 2018 Same period 2017
Rank 78 77 46
Rank change year-on-year -1 -31 +36
Contract jobs citing JSON 26 26 53
As % of all contract IT jobs advertised in Hertfordshire 1.80% 1.62% 4.05%
As % of the Libraries, Frameworks & Software Standards category 6.39% 6.00% 16.77%
Number of daily rates quoted 20 16 34
Hertfordshire median daily rate £425 £400 £425
Median daily rate % change year-on-year +6.25% -5.88% +13.33%
10th Percentile £318 £323 £330
90th Percentile £469 £488 £500
East of England median daily rate £500 £525 £473
% change year-on-year -4.76% +11.11% +18.13%
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate - £70.00 £62.50
% change year-on-year - +12.00% +13.64%

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

All Software Libraries and Frameworks
Hertfordshire
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 407 433 316
As % of all contract IT jobs advertised in Hertfordshire 28.21% 26.98% 24.14%
Number of daily rates quoted 197 294 201
Hertfordshire median daily rate £450 £425 £390
Median daily rate % change year-on-year +5.88% +8.97% -2.50%
10th Percentile £312 £260 £256
90th Percentile £591 £562 £575
East of England median daily rate £450 £450 £425
% change year-on-year - +5.88% +6.25%
Number of hourly rates quoted 7 7 1
Hertfordshire median hourly rate £45.00 £50.00 £15.00
Median hourly rate % change year-on-year -10.00% +233.33% +42.86%
East of England median hourly rate £43.75 £42.50 £40.00
% change year-on-year +2.94% +6.25% +14.29%

JSON
Job Vacancy Trend in Hertfordshire

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

Job vacancy trend for JSON in Hertfordshire

JSON
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for JSON in Hertfordshire

JSON
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing JSON in Hertfordshire over the 6 months to 22 August 2019.

Contractor daily rate histogram for JSON in Hertfordshire

JSON
Contractor Hourly Rate Trend in Hertfordshire

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

Contractor hourly rate trend for JSON in Hertfordshire

JSON
Contract Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing JSON within the Hertfordshire region over the 6 months to 22 August 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
Watford -10 11 £463 +21.71% 5
Hemel Hempstead 0 8 £375 -18.92% 1
Stevenage - 1 £580 -
JSON
East of England

For the 6 months to 22 August 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 Hertfordshire region with a requirement for JSON.

1 17 (65.38%) Web Services
2 15 (57.69%) HTML
3 14 (53.85%) SOAP
3 14 (53.85%) Agile Software Development
3 14 (53.85%) REST
4 13 (50.00%) JavaScript
5 12 (46.15%) Java
5 12 (46.15%) XML
5 12 (46.15%) CSS
5 12 (46.15%) Windows
6 11 (42.31%) Scrum
7 10 (38.46%) TDD
7 10 (38.46%) Apple iOS
7 10 (38.46%) Android
8 9 (34.62%) Test Automation
8 9 (34.62%) BDD
8 9 (34.62%) ATDD
8 9 (34.62%) DevOps
8 9 (34.62%) Software Delivery
9 8 (30.77%) TestRail
9 8 (30.77%) User Experience
9 8 (30.77%) Test Scripting
9 8 (30.77%) JIRA
10 7 (26.92%) Kanban
10 7 (26.92%) Mac OS
10 7 (26.92%) XSLT
11 6 (23.08%) .NET
11 6 (23.08%) Apache
11 6 (23.08%) E-Commerce
11 6 (23.08%) Validation

JSON
Co-occurring IT Skills in Hertfordshire 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 6 (23.08%) Adobe Experience Manager
1 6 (23.08%) Apache
1 6 (23.08%) CMS
1 6 (23.08%) WebSphere
2 1 (3.85%) OpenStack
2 1 (3.85%) Oracle SOA Suite
Applications
1 1 (3.85%) Adobe Creative Suite
1 1 (3.85%) Adobe Illustrator
1 1 (3.85%) Photoshop
1 1 (3.85%) Sketch
Cloud Services
1 4 (15.38%) BrowserStack
1 4 (15.38%) Sauce Labs
2 2 (7.69%) Azure
2 2 (7.69%) PaaS
3 1 (3.85%) Adobe Creative Cloud
3 1 (3.85%) AWS
3 1 (3.85%) Azure Active Directory
3 1 (3.85%) GCP
3 1 (3.85%) GitHub
3 1 (3.85%) IaaS
Database & Business Intelligence
1 6 (23.08%) Jackrabbit
2 3 (11.54%) NoSQL
3 2 (7.69%) SQL Server
4 1 (3.85%) Apache Cassandra
4 1 (3.85%) Blockchain
4 1 (3.85%) MongoDB
4 1 (3.85%) MySQL
4 1 (3.85%) Oracle ODI
4 1 (3.85%) Relational Database
Development Applications
1 8 (30.77%) JIRA
1 8 (30.77%) TestRail
2 6 (23.08%) Cucumber
2 6 (23.08%) Robot Framework
2 6 (23.08%) Selenium
2 6 (23.08%) WebDriver
3 4 (15.38%) Appium
3 4 (15.38%) Calabash
4 3 (11.54%) AppScan
4 3 (11.54%) Burp Suite
4 3 (11.54%) SoapUI
5 1 (3.85%) Axure RP
5 1 (3.85%) Dreamweaver
5 1 (3.85%) Jasmine
5 1 (3.85%) Jenkins
5 1 (3.85%) Karma Test Runner
5 1 (3.85%) Protractor
General
1 4 (15.38%) Telecoms
2 1 (3.85%) Finance
2 1 (3.85%) Marketing
2 1 (3.85%) Retail
Job Titles
1 9 (34.62%) Developer
2 6 (23.08%) Java Developer
2 6 (23.08%) Tester
3 4 (15.38%) Automation Tester
3 4 (15.38%) Test Leader
4 3 (11.54%) Mobile Tester
5 2 (7.69%) DevOps Engineer
5 2 (7.69%) Penetration Tester
5 2 (7.69%) Technical Leader
6 1 (3.85%) Analyst
6 1 (3.85%) Applications Tester
6 1 (3.85%) Architect
6 1 (3.85%) Infrastructure Engineer
6 1 (3.85%) Security Engineer
6 1 (3.85%) Senior Analyst
6 1 (3.85%) Senior Test Analyst
6 1 (3.85%) Senior Tester
6 1 (3.85%) Test Analyst
6 1 (3.85%) Test Engineer
6 1 (3.85%) Test Manager
Libraries, Frameworks & Software Standards
1 17 (65.38%) Web Services
2 15 (57.69%) HTML
3 14 (53.85%) REST
3 14 (53.85%) SOAP
4 12 (46.15%) CSS
4 12 (46.15%) XML
5 7 (26.92%) XSLT
6 6 (23.08%) .NET
6 6 (23.08%) RESTful
7 3 (11.54%) Ajax
7 3 (11.54%) ASP.NET
8 2 (7.69%) HTML5
8 2 (7.69%) XSD
9 1 (3.85%) CSS3
9 1 (3.85%) Laravel
9 1 (3.85%) Middleware
9 1 (3.85%) Oracle Fusion
9 1 (3.85%) RabbitMQ
9 1 (3.85%) XHR
9 1 (3.85%) YAML
Miscellaneous
1 8 (30.77%) User Experience
2 3 (11.54%) Analytical Skills
3 1 (3.85%) Cloud Native
3 1 (3.85%) Data Protection Act
3 1 (3.85%) Data Structures
3 1 (3.85%) Mobile App
Operating Systems
1 12 (46.15%) Windows
2 10 (38.46%) Android
2 10 (38.46%) Apple iOS
3 7 (26.92%) Mac OS
4 3 (11.54%) Linux
5 1 (3.85%) Windows Server
Processes & Methodologies
1 14 (53.85%) Agile Software Development
2 11 (42.31%) Scrum
3 10 (38.46%) TDD
4 9 (34.62%) ATDD
4 9 (34.62%) BDD
4 9 (34.62%) DevOps
4 9 (34.62%) Software Delivery
4 9 (34.62%) Test Automation
5 8 (30.77%) Test Scripting
6 7 (26.92%) Kanban
7 6 (23.08%) E-Commerce
7 6 (23.08%) Microservices
7 6 (23.08%) Validation
8 4 (15.38%) Multithreading
9 3 (11.54%) Cryptography
9 3 (11.54%) OO
9 3 (11.54%) Open Source
9 3 (11.54%) OWASP
9 3 (11.54%) Penetration Testing
9 3 (11.54%) Vulnerability Assessment
Programming Languages
1 13 (50.00%) JavaScript
2 12 (46.15%) Java
3 5 (19.23%) Python
4 4 (15.38%) PHP
4 4 (15.38%) Ruby
5 3 (11.54%) Objective-C
5 3 (11.54%) Perl
5 3 (11.54%) Shell Script
6 2 (7.69%) SQL
7 1 (3.85%) Bash Shell
7 1 (3.85%) Clojure
7 1 (3.85%) Go
7 1 (3.85%) Groovy
7 1 (3.85%) PowerShell
7 1 (3.85%) Scala
Qualifications
1 3 (11.54%) SANS
2 1 (3.85%) Degree
Quality Assurance & Compliance
1 1 (3.85%) GDPR
System Software
1 1 (3.85%) Active Directory
1 1 (3.85%) XenApp
Systems Management
1 5 (19.23%) HP Quality Center
2 3 (11.54%) Single Sign-On
2 3 (11.54%) WebInspect
Vendors
1 4 (15.38%) Oracle
2 3 (11.54%) Acunetix
2 3 (11.54%) HP
2 3 (11.54%) IBM
3 2 (7.69%) EMC
4 1 (3.85%) Adobe
4 1 (3.85%) Citrix
4 1 (3.85%) hybris
4 1 (3.85%) SolarWinds
4 1 (3.85%) VMware