The following table provides summary statistics for contract job vacancies with a requirement for Prolog skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Prolog over the 3 months to 23 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.

Prolog
UK
3 months to
23 Jun 2017
Same period 2016 Same period 2015
Rank 592 - 638
Rank change year-on-year - 0  
Contract jobs citing Prolog 10 0 1
As % of all contract IT jobs advertised in the UK 0.021% - 0.002%
As % of the Programming Languages category 0.051% - 0.005%
Number of daily rates quoted 10 0 1
Median daily rate £388 - £400
UK excluding London median daily rate £388 - £400
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Prolog is in the programming language skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies with a requirement for programming language skills.

Contract Programming Language Skills
UK
Contract job vacancies with a requirement for programming language skills 19649 20853 21330
As % of all contract IT job vacancies advertised in the UK 41.97% 38.75% 37.96%
Number of daily rates quoted 13427 14322 14249
Median daily rate £450 £425 £400
Median daily rate % change year-on-year +5.88% +6.25%  
90% offered a daily rate of more than £318 £300 £275
10% offered a daily rate of more than £600 £575 £575
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 388 450 435
Median hourly rate £42.00 £37.50 £36.00
Median hourly rate % change year-on-year +12.00% +4.16%  
90% offered a hourly rate of more than £21.43 £15.00 £19.00
10% offered a hourly rate of more than £51.00 £50.00 £50.00
UK excluding London median hourly rate £42.50 £37.50 £36.50
% change year-on-year +13.33% +2.73%  

Prolog
Job Vacancy Trend

The job posting trend of jobs advertised citing Prolog as a proportion of all contract or permanent IT jobs with a match in the Programming Languages category.

Job vacancy trend for Prolog in the UK

Prolog
Contractor Daily Rate Trend

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

Contractor daily rate trend for Prolog in the UK

Prolog
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing Prolog over the 3 months to 23 June 2017.

Contractor daily rate histogram for Prolog in the UK

Prolog
Top 9 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Prolog within the UK over the 3 months to 23 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
England - 7 £375 - 1
North West - 4 £375 - 1
Manchester - 4 £375 - 1
Glasgow - 3 £388 -
Scotland - 3 £388 -
Leeds - 2 £400 -
West Yorkshire - 2 £400 -
Yorkshire - 2 £400 -
London - 1 £600 -

For the 6 months to 23 June 2017, IT contractor jobs citing Prolog also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads with a requirement for Prolog.

1 11 (100.00%) HTML
1 11 (100.00%) Java
1 11 (100.00%) JavaScript
1 11 (100.00%) SQL
1 11 (100.00%) CSS
1 11 (100.00%) Python
1 11 (100.00%) SAS
1 11 (100.00%) Ajax
1 11 (100.00%) JSON
1 11 (100.00%) Ext JS
1 11 (100.00%) Git (software)
1 11 (100.00%) HTML5
1 11 (100.00%) REST
1 11 (100.00%) CSS3
1 11 (100.00%) Big Data
1 11 (100.00%) Front End Development

Prolog
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 11 (100.00%) SAS
Database & Business Intelligence
1 11 (100.00%) Big Data
Development Applications
1 11 (100.00%) Git (software)
Job Titles
1 11 (100.00%) Developer
1 11 (100.00%) Front End Developer (Client-Side Developer)
Libraries, Frameworks & Software Standards
1 11 (100.00%) Ajax
1 11 (100.00%) CSS
1 11 (100.00%) CSS3
1 11 (100.00%) Ext JS
1 11 (100.00%) HTML
1 11 (100.00%) HTML5
1 11 (100.00%) JSON
1 11 (100.00%) REST
Processes & Methodologies
1 11 (100.00%) Front End Development
Programming Languages
1 11 (100.00%) Java
1 11 (100.00%) JavaScript
1 11 (100.00%) Python
1 11 (100.00%) SQL