The following table provides summary statistics for contract job vacancies advertised in the South East with a requirement for D3.js skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited D3.js over the 3 months to 26 June 2017 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.

Data-Driven Documents (D3)
England / South East
3 months to
26 Jun 2017
Same period 2016 Same period 2015
Rank 240 274 261
Rank change year-on-year +34 -13  
Contract jobs citing D3.js 8 4 4
As % of all contract IT jobs advertised in the South East 0.10% 0.045% 0.042%
As % of the Libraries, Frameworks & Software Standards category 0.38% 0.17% 0.17%
Number of daily rates quoted 4 4 4
Median daily rate £450 £500 £375
Median daily rate % change year-on-year -10.00% +33.33%  
UK excluding London median daily rate £400 £398 £375
% change year-on-year +0.62% +6.00%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

D3.js is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the South East with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
South East
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 2129 2357 2407
As % of all contract IT job vacancies advertised in the South East 27.32% 26.73% 25.46%
Number of daily rates quoted 1359 1512 1525
Median daily rate £400 £400 £363
Median daily rate % change year-on-year - +10.34%  
90% offered a daily rate of more than £313 £300 £275
10% offered a daily rate of more than £525 £525 £470
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 29 55 29
Median hourly rate £42.50 £43.00 £40.00
Median hourly rate % change year-on-year -1.16% +7.50%  
90% offered a hourly rate of more than £14.40 £12.50 £15.75
10% offered a hourly rate of more than £48.50 £55.00 £50.00
UK excluding London median hourly rate £42.50 £36.00 £40.00
% change year-on-year +18.05% -10.00%  

D3.js
Job Vacancy Trend in the South East

The job posting trend of jobs advertised in the South East citing D3.js as a proportion of all contract or permanent IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for D3.js in the South East

D3.js
Contractor Daily Rate Trend in the South East

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing D3.js in the South East.

Contractor daily rate trend for D3.js in the South East

D3.js
Contract Job Locations in the South East

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing D3.js within the South East region over the 3 months to 26 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Berkshire - 3 £450 - 1
Hampshire - 3 £450 -
Surrey +2 1 - - 1
Buckinghamshire - 1 - - 1
D3.js
England

For the 6 months to 26 June 2017, IT contractor jobs citing D3.js also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the South East region with a requirement for D3.js.

1 13 (76.47%) HTML
1 13 (76.47%) JavaScript
1 13 (76.47%) CSS
1 13 (76.47%) HTML5
1 13 (76.47%) AngularJS
1 13 (76.47%) React
2 12 (70.59%) CSS3
3 11 (64.71%) Agile Software Development
4 9 (52.94%) Java
4 9 (52.94%) Visualisation
5 8 (47.06%) Node.js
6 6 (35.29%) Scrum
6 6 (35.29%) Amazon AWS
7 5 (29.41%) Mathematics
7 5 (29.41%) jQuery
7 5 (29.41%) NoSQL
7 5 (29.41%) R
7 5 (29.41%) Data Visualisation
7 5 (29.41%) Big Data
7 5 (29.41%) Degree
7 5 (29.41%) SQL
7 5 (29.41%) Python
7 5 (29.41%) B2B
8 4 (23.53%) MATLAB
8 4 (23.53%) Statistics
8 4 (23.53%) Data Analysis
8 4 (23.53%) Spring
8 4 (23.53%) Cocoa
8 4 (23.53%) Objective-C
8 4 (23.53%) Statistical Modelling

D3.js
Co-occurring IT Skills in the South East 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 4 (23.53%) Apache Spark
2 1 (5.88%) Elasticsearch
Applications
1 4 (23.53%) Spreadsheet
Cloud Services
1 6 (35.29%) Amazon AWS
2 4 (23.53%) Google Cloud Platform
3 1 (5.88%) SaaS
Database & Business Intelligence
1 5 (29.41%) Big Data
1 5 (29.41%) NoSQL
2 4 (23.53%) QlikView
3 1 (5.88%) MongoDB
3 1 (5.88%) PostgreSQL
General
1 2 (11.76%) Banking
1 2 (11.76%) Finance
2 1 (5.88%) Telecoms
Job Titles
1 8 (47.06%) Developer
2 7 (41.18%) JavaScript Developer
3 5 (29.41%) Architect
3 5 (29.41%) Technical Architect
4 4 (23.53%) Analyst
4 4 (23.53%) Data Analyst
4 4 (23.53%) Senior Developer
4 4 (23.53%) Senior JavaScript Developer
5 3 (17.65%) Front End Developer (Client-Side Developer)
5 3 (17.65%) Java Architect
5 3 (17.65%) Java Technical Architect
6 2 (11.76%) Data Scientist
6 2 (11.76%) Data Visualisation Analyst
7 1 (5.88%) Analytics Developer
7 1 (5.88%) Angular Developer
7 1 (5.88%) Big Data Analyst
7 1 (5.88%) Cloud Developer
7 1 (5.88%) Data Visualisation Developer
7 1 (5.88%) HTML CSS Developer
7 1 (5.88%) HTML Developer
Libraries, Frameworks & Software Standards
1 13 (76.47%) AngularJS
1 13 (76.47%) CSS
1 13 (76.47%) HTML
1 13 (76.47%) HTML5
1 13 (76.47%) React
2 12 (70.59%) CSS3
3 8 (47.06%) Node.js
4 5 (29.41%) jQuery
5 4 (23.53%) Cocoa
5 4 (23.53%) Spring
5 4 (23.53%) Three.js
6 3 (17.65%) Ajax
6 3 (17.65%) JSON
6 3 (17.65%) LESS
6 3 (17.65%) RESTful
6 3 (17.65%) Sass
7 2 (11.76%) Angular 2
7 2 (11.76%) Redux
8 1 (5.88%) PostGIS
8 1 (5.88%) WebGL
Miscellaneous
1 4 (23.53%) Algorithms
1 4 (23.53%) Data Structures
1 4 (23.53%) User Experience
2 3 (17.65%) Computer Science
3 2 (11.76%) Enterprise Software
Operating Systems
1 4 (23.53%) Android
Processes & Methodologies
1 11 (64.71%) Agile Software Development
2 9 (52.94%) Visualisation
3 6 (35.29%) Scrum
4 5 (29.41%) B2B
4 5 (29.41%) Data Visualisation
4 5 (29.41%) Mathematics
5 4 (23.53%) Data Analysis
5 4 (23.53%) Kanban
5 4 (23.53%) Mobile Development
5 4 (23.53%) Statistical Modelling
5 4 (23.53%) Statistics
6 3 (17.65%) Creative Problem-Solving
6 3 (17.65%) Cross-Browser Compatibility
6 3 (17.65%) Front End Development
6 3 (17.65%) Machine Learning
6 3 (17.65%) Open Source
7 1 (5.88%) Analytics
7 1 (5.88%) Competitor Analysis
7 1 (5.88%) Physics
7 1 (5.88%) Use Case
Programming Languages
1 13 (76.47%) JavaScript
2 9 (52.94%) Java
3 5 (29.41%) Python
3 5 (29.41%) R
3 5 (29.41%) SQL
4 4 (23.53%) Apple Swift
4 4 (23.53%) MATLAB
4 4 (23.53%) Objective-C
5 1 (5.88%) Scala
Qualifications
1 5 (29.41%) Degree
System Software
1 1 (5.88%) Docker
Vendors
1 4 (23.53%) Google
2 1 (5.88%) Mapbox
2 1 (5.88%) Oracle