Period
to 19 February 2019

The following table provides summary statistics for contract job vacancies advertised in Slough 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 6 months to 19 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.

Data-Driven Documents (D3)
Berkshire > Slough
6 months to
19 Feb 2019
Same period 2018 Same period 2017
Rank 40 29 -
Rank change year-on-year -11 - -
Contract jobs citing D3.js 1 1 0
As % of all contract IT jobs advertised in Slough 0.29% 0.40% -
As % of the Libraries, Frameworks & Software Standards category 1.09% 1.82% -
Number of daily rates quoted 1 1 0
Slough median daily rate £475 £425 -
Median daily rate % change year-on-year +11.76% - -
Berkshire median daily rate £475 £375 £400
% change year-on-year +26.67% -6.25% -15.79%
Number of hourly rates quoted 0 0 0
Slough median hourly rate - - -
Berkshire median hourly rate - - -

D3.js 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 Slough with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
Slough
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 92 55 77
As % of all contract IT jobs advertised in Slough 26.67% 22.18% 26.64%
Number of daily rates quoted 69 38 62
Slough median daily rate £475 £400 £363
Median daily rate % change year-on-year +18.75% +10.34% -3.33%
10th Percentile £225 £313 £205
90th Percentile £550 £521 £468
Berkshire median daily rate £445 £400 £400
% change year-on-year +11.25% - -
Number of hourly rates quoted 0 0 0
Slough median hourly rate - - -
Berkshire median hourly rate £38.75 £33.00 £46.00
% change year-on-year +17.42% -28.26% +3.95%

D3.js
Job Vacancy Trend in Slough

Job postings citing D3.js as a percentage of all IT jobs advertised in Slough.

Job vacancy trend for D3.js in Slough

D3.js
Contractor Daily Rate Trend in Slough

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

Contractor daily rate trend for D3.js in Slough

For the 6 months to 19 February 2019, IT contractor jobs citing D3.js 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 Slough region with a requirement for D3.js.

1 1 (100.00%) Visualisation
1 1 (100.00%) Balsamiq Mockups
1 1 (100.00%) Data Visualisation
1 1 (100.00%) AngularJS
1 1 (100.00%) User Experience
1 1 (100.00%) React
1 1 (100.00%) Vue.js
1 1 (100.00%) High-Fidelity Prototypes
1 1 (100.00%) A/B Testing

D3.js
Co-occurring IT Skills in Slough 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:

Development Applications
1 1 (100.00%) Balsamiq Mockups
Job Titles
1 1 (100.00%) Data Visualisation Expert
Libraries, Frameworks & Software Standards
1 1 (100.00%) AngularJS
1 1 (100.00%) React
1 1 (100.00%) Vue.js
Miscellaneous
1 1 (100.00%) User Experience
Processes & Methodologies
1 1 (100.00%) A/B Testing
1 1 (100.00%) Data Visualisation
1 1 (100.00%) High-Fidelity Prototypes
1 1 (100.00%) Visualisation