The following table provides summary statistics for contract job vacancies with a requirement for VoltDB skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited VoltDB over the 3 months to 27 March 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.

3 months to
27 Mar 2017
Same period 2016 Same period 2015
VoltDB
UK
Rank 582 631 626
Rank change year-on-year +49 -5  
Contract jobs citing VoltDB 1 9 5
As % of all contract IT jobs advertised in the UK 0.002% 0.017% 0.009%
As % of the Database & Business Intelligence category 0.010% 0.076% 0.041%
Number of daily rates quoted 1 6 3
Median daily rate £563 £578 £400
Median daily rate % change year-on-year -2.59% +44.37%  
UK excluding London median daily rate £563 £578 £400
% change year-on-year -2.59% +44.37%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

VoltDB is in the database and business intelligence skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies with a requirement for database and business intelligence skills.

Contract Database & Business Intelligence Skills
UK
Contract job vacancies with a requirement for database and business intelligence skills 10225 11789 12101
As % of all contract IT job vacancies advertised in the UK 22.76% 22.15% 22.40%
Number of daily rates quoted 6925 7905 7760
Median daily rate £438 £425 £400
Median daily rate % change year-on-year +2.94% +6.25%  
90% offered a daily rate of more than £300 £300 £275
10% offered a daily rate of more than £600 £600 £550
UK excluding London median daily rate £400 £388 £375
% change year-on-year +3.22% +3.33%  
Number of hourly rates quoted 131 189 159
Median hourly rate £34.24 £32.50 £32.10
Median hourly rate % change year-on-year +5.35% +1.24%  
90% offered a hourly rate of more than £11.70 £14.50 £15.35
10% offered a hourly rate of more than £47.00 £60.62 £47.50
UK excluding London median hourly rate £34.24 £32.50 £32.50
% change year-on-year +5.35% -  

VoltDB
Job Vacancy Trend

The job posting trend of jobs advertised citing VoltDB as a proportion of all contract or permanent IT jobs with a match in the Database & Business Intelligence category.

Job vacancy trend for VoltDB in the UK

VoltDB
Contractor Daily Rate Trend

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

Contractor daily rate trend for VoltDB in the UK

VoltDB
Top 4 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing VoltDB within the UK over the 3 months to 27 March 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 +41 1 £563 -2.59% 1
Leatherhead +21 1 £563 -2.59% 1
South East +6 1 £563 -2.59% 1
Surrey -1 1 £563 -2.59% 1

VoltDB
Top 25 Related IT Skills

For the 6 months to 27 March 2017, IT contractor jobs citing VoltDB 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 VoltDB.

1 3 (100.00%) SC Cleared
1 3 (100.00%) Security Cleared
2 2 (66.67%) JBoss
2 2 (66.67%) Data Modelling
2 2 (66.67%) Java
2 2 (66.67%) PL/SQL
2 2 (66.67%) SQL
2 2 (66.67%) Oracle
3 1 (33.33%) Spring
3 1 (33.33%) Maven
3 1 (33.33%) Java EE
3 1 (33.33%) Performance Testing
3 1 (33.33%) Unit Testing
3 1 (33.33%) Linux
3 1 (33.33%) JMeter
3 1 (33.33%) Hibernate
3 1 (33.33%) Red Hat Enterprise Linux
3 1 (33.33%) tcpdump
3 1 (33.33%) Apache Cassandra
3 1 (33.33%) HBase
3 1 (33.33%) Oracle Database
3 1 (33.33%) Impala
3 1 (33.33%) SDLC
3 1 (33.33%) Apache Kudu
3 1 (33.33%) Network Packet Analysis

VoltDB
Top Related 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 2 (66.67%) JBoss
Communications & Networking
1 1 (33.33%) tcpdump
Database & Business Intelligence
1 1 (33.33%) Apache Cassandra
1 1 (33.33%) Apache Kudu
1 1 (33.33%) HBase
1 1 (33.33%) Impala
1 1 (33.33%) Oracle Database
Development Applications
1 1 (33.33%) JMeter
1 1 (33.33%) Maven
Job Titles
1 3 (100.00%) Developer
2 2 (66.67%) Java Developer
2 2 (66.67%) PL/SQL Developer
2 2 (66.67%) SQL Developer
3 1 (33.33%) Database Developer
3 1 (33.33%) Oracle Developer
3 1 (33.33%) SC Cleared Java Developer
3 1 (33.33%) SQL Database Developer
Libraries, Frameworks & Software Standards
1 1 (33.33%) Hibernate
1 1 (33.33%) Java EE
1 1 (33.33%) Spring
Operating Systems
1 1 (33.33%) Linux
1 1 (33.33%) Red Hat Enterprise Linux
Processes & Methodologies
1 2 (66.67%) Data Modelling
2 1 (33.33%) Network Packet Analysis
2 1 (33.33%) Performance Testing
2 1 (33.33%) SDLC
2 1 (33.33%) Unit Testing
Programming Languages
1 2 (66.67%) Java
1 2 (66.67%) PL/SQL
1 2 (66.67%) SQL
Qualifications
1 3 (100.00%) SC Cleared
1 3 (100.00%) Security Cleared
Vendors
1 2 (66.67%) Oracle