Period
to 23 January 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 23 January 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
23 Jan 2019
Same period 2018 Same period 2017
Rank 69 54 76
Rank change year-on-year -15 +22 -1
Contract jobs citing JSON 23 46 17
As % of all contract IT jobs advertised in Hertfordshire 1.61% 2.97% 1.23%
As % of the Libraries, Frameworks & Software Standards category 6.41% 12.14% 4.57%
Number of daily rates quoted 26 15 2
Hertfordshire median daily rate £488 £425 £488
Median daily rate % change year-on-year +14.71% -12.82% +56.00%
10th Percentile £322 £313 £466
90th Percentile £550 £517 £499
East of England median daily rate £525 £500 £350
% change year-on-year +5.00% +42.86% -
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate £65.00 £62.50 £31.98
% change year-on-year +4.00% +95.47% -22.01%

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 359 379 372
As % of all contract IT jobs advertised in Hertfordshire 25.19% 24.45% 26.86%
Number of daily rates quoted 231 202 224
Hertfordshire median daily rate £425 £425 £438
Median daily rate % change year-on-year - -2.86% +16.67%
10th Percentile £275 £313 £277
90th Percentile £575 £569 £570
East of England median daily rate £450 £425 £400
% change year-on-year +5.88% +6.25% +3.23%
Number of hourly rates quoted 10 2 5
Hertfordshire median hourly rate £50.00 £13.61 £37.50
Median hourly rate % change year-on-year +267.38% -63.71% +7.14%
10th Percentile £21.98 £11.51 £31.15
90th Percentile £66.81 £15.42 £44.18
East of England median hourly rate £45.25 £42.00 £37.50
% change year-on-year +7.74% +12.00% -5.06%

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 23 January 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 23 January 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 -7 11 £550 +29.41% 3
Stevenage -4 6 £332 - 2
Hemel Hempstead +2 2 £475 +46.15% 2
Rickmansworth -9 2 £400 +5.26%
JSON
East of England

For the 6 months to 23 January 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 18 (78.26%) XML
2 13 (56.52%) Agile Software Development
3 12 (52.17%) SQL
3 12 (52.17%) T-SQL
4 11 (47.83%) Oracle
4 11 (47.83%) SQL Server
4 11 (47.83%) JIRA
4 11 (47.83%) Test Automation
5 10 (43.48%) BDD
5 10 (43.48%) Talend
5 10 (43.48%) SQL Server 2016
5 10 (43.48%) Scaled Agile Framework
5 10 (43.48%) SQL Server Integration Services
5 10 (43.48%) Data Migration
5 10 (43.48%) Reference Data
5 10 (43.48%) Data Mapping
5 10 (43.48%) SC Cleared
5 10 (43.48%) Security Cleared
5 10 (43.48%) Migration
5 10 (43.48%) PostgreSQL
5 10 (43.48%) TDD
5 10 (43.48%) Subversion
5 10 (43.48%) SQL Server Reporting Services
5 10 (43.48%) C#
5 10 (43.48%) PL/SQL
5 10 (43.48%) ETL
6 9 (39.13%) Web Services
7 8 (34.78%) REST
8 7 (30.43%) Problem-Solving
8 7 (30.43%) SOAP

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 2 (8.70%) WebSphere
2 1 (4.35%) Confluence
Applications
1 1 (4.35%) Adobe Illustrator
1 1 (4.35%) Photoshop
Cloud Services
1 1 (4.35%) Amazon AWS
1 1 (4.35%) GitHub
1 1 (4.35%) npm
Communications & Networking
1 6 (26.09%) SSL
1 6 (26.09%) VPN
Database & Business Intelligence
1 11 (47.83%) SQL Server
2 10 (43.48%) PostgreSQL
2 10 (43.48%) SQL Server 2016
2 10 (43.48%) SQL Server Integration Services
2 10 (43.48%) SQL Server Reporting Services
3 2 (8.70%) Sybase ASE
4 1 (4.35%) MySQL
Development Applications
1 11 (47.83%) JIRA
2 10 (43.48%) Subversion
3 2 (8.70%) Visual Studio
4 1 (4.35%) Bitbucket
4 1 (4.35%) gulp
4 1 (4.35%) Jenkins
4 1 (4.35%) JIRA Agile
4 1 (4.35%) Maven
General
1 2 (8.70%) Pharmaceutical
Job Titles
1 15 (65.22%) Developer
2 11 (47.83%) SQL Developer
3 10 (43.48%) Data Migration Developer
3 10 (43.48%) ETL Developer
3 10 (43.48%) Oracle Developer
3 10 (43.48%) Oracle ETL Developer
3 10 (43.48%) PostgreSQL Developer
3 10 (43.48%) SQL Server Developer
4 3 (13.04%) Support Specialist
4 3 (13.04%) Web Specialist
5 2 (8.70%) Java Developer
5 2 (8.70%) JSP Developer
6 1 (4.35%) Angular Developer
6 1 (4.35%) Applications Manager
6 1 (4.35%) Applications Support
6 1 (4.35%) Applications Support Manager
6 1 (4.35%) AWS DevOps
6 1 (4.35%) AWS DevOps Engineer
6 1 (4.35%) Front End Developer (Client-Side Developer)
6 1 (4.35%) Support Manager
Libraries, Frameworks & Software Standards
1 18 (78.26%) XML
2 9 (39.13%) Web Services
3 8 (34.78%) REST
4 7 (30.43%) SOAP
5 6 (26.09%) LDAP
5 6 (26.09%) XSLT
6 5 (21.74%) HTML
6 5 (21.74%) HTML5
6 5 (21.74%) Spring
7 3 (13.04%) .NET
7 3 (13.04%) CSS
8 2 (8.70%) Ajax
8 2 (8.70%) CSS3
8 2 (8.70%) Hibernate
8 2 (8.70%) jQuery
8 2 (8.70%) JSP
8 2 (8.70%) Node.js
8 2 (8.70%) RESTful
8 2 (8.70%) Spring MVC
8 2 (8.70%) Twitter Bootstrap
Miscellaneous
1 10 (43.48%) Reference Data
2 6 (26.09%) Analytical Skills
2 6 (26.09%) Client/Server
2 6 (26.09%) DataPower
Operating Systems
1 1 (4.35%) Windows
Processes & Methodologies
1 13 (56.52%) Agile Software Development
2 11 (47.83%) Test Automation
3 10 (43.48%) BDD
3 10 (43.48%) Data Mapping
3 10 (43.48%) Data Migration
3 10 (43.48%) ETL
3 10 (43.48%) Migration
3 10 (43.48%) Scaled Agile Framework
3 10 (43.48%) TDD
4 7 (30.43%) Problem-Solving
5 3 (13.04%) MVC
6 2 (8.70%) Decision-Making
6 2 (8.70%) Infrastructure Management
7 1 (4.35%) Coaching
7 1 (4.35%) Cross-Browser Testing
7 1 (4.35%) DevOps
7 1 (4.35%) High Availability
7 1 (4.35%) Mentoring
7 1 (4.35%) Open Source
7 1 (4.35%) SDLC
Programming Languages
1 12 (52.17%) SQL
1 12 (52.17%) T-SQL
2 10 (43.48%) C#
2 10 (43.48%) PL/SQL
3 4 (17.39%) JavaScript
4 3 (13.04%) Java
5 1 (4.35%) ES6
5 1 (4.35%) ES7
5 1 (4.35%) PowerShell
Qualifications
1 10 (43.48%) SC Cleared
1 10 (43.48%) Security Cleared
2 1 (4.35%) AWS Certification
System Software
1 1 (4.35%) Docker
Systems Management
1 1 (4.35%) Kubernetes
Vendors
1 11 (47.83%) Oracle
2 10 (43.48%) Talend
3 6 (26.09%) IBM
4 2 (8.70%) Sybase