The following table provides summary statistics for contract job vacancies advertised in Hertfordshire with a requirement for Hadoop skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Hadoop over the 3 months to 29 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.

Apache Hadoop
East of England / Hertfordshire
3 months to
29 Jun 2017
Same period 2016 Same period 2015
Rank 61 59 74
Rank change year-on-year -2 +15  
Contract jobs citing Hadoop 1 1 2
As % of all contract IT jobs advertised in Hertfordshire 0.16% 0.15% 0.22%
As % of the Database & Business Intelligence category 0.89% 0.78% 1.02%
Number of daily rates quoted 1 0 2
Median daily rate £575 - £475
90% offered a daily rate of more than £563 - £430
10% offered a daily rate of more than £588 - £520
UK excluding London median daily rate £445 £450 £450
% change year-on-year -1.11% -  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £50.00 £25.00 £26.00
% change year-on-year +100.00% -3.84%  

Hadoop 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 advertised in Hertfordshire with a requirement for database and business intelligence skills.

Contract Database & Business Intelligence Skills
Hertfordshire
Contract job vacancies with a requirement for database and business intelligence skills 112 129 196
As % of all contract IT job vacancies advertised in Hertfordshire 17.50% 19.25% 21.88%
Number of daily rates quoted 209 196 223
Median daily rate £425 £400 £375
Median daily rate % change year-on-year +6.25% +6.66%  
90% offered a daily rate of more than £310 £281 £288
10% offered a daily rate of more than £500 £488 £500
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 5 1 1
Median hourly rate £15.00 £12.08 £20.94
Median hourly rate % change year-on-year +24.17% -42.29%  
UK excluding London median hourly rate £38.00 £31.95 £26.00
% change year-on-year +18.93% +22.88%  

Hadoop
Job Vacancy Trend in Hertfordshire

Job postings citing Hadoop as a percentage of all IT jobs advertised in Hertfordshire.

Job vacancy trend for Hadoop in Hertfordshire

Hadoop
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for Hadoop in Hertfordshire

For the 6 months to 29 June 2017, IT contractor jobs citing Hadoop 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 Hertfordshire region with a requirement for Hadoop.

1 5 (83.33%) Big Data
2 2 (33.33%) HBase
2 2 (33.33%) Machine Learning
2 2 (33.33%) Agile Software Development
2 2 (33.33%) TDD
2 2 (33.33%) Use Case
2 2 (33.33%) Java
2 2 (33.33%) SQL
2 2 (33.33%) Business Intelligence
2 2 (33.33%) Apache Spark
3 1 (16.67%) Presales
3 1 (16.67%) GNU Octave
3 1 (16.67%) Concurrent Programming
3 1 (16.67%) Data Centre
3 1 (16.67%) Kafka
3 1 (16.67%) Data Analytics
3 1 (16.67%) Business Analytics
3 1 (16.67%) Analytics
3 1 (16.67%) Elasticsearch
3 1 (16.67%) Low Latency
3 1 (16.67%) Performance Tuning
3 1 (16.67%) Relational Database
3 1 (16.67%) Analytical Skills
3 1 (16.67%) RDBMS
3 1 (16.67%) MATLAB
3 1 (16.67%) Oracle
3 1 (16.67%) SAP
3 1 (16.67%) Python
3 1 (16.67%) E-Commerce
3 1 (16.67%) SAS

Hadoop
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 (33.33%) Apache Spark
2 1 (16.67%) Apache Solr
2 1 (16.67%) Elasticsearch
2 1 (16.67%) SAS
Applications
1 1 (16.67%) GNU Octave
Database & Business Intelligence
1 5 (83.33%) Big Data
2 2 (33.33%) HBase
3 1 (16.67%) Apache Cassandra
3 1 (16.67%) Apache Hive
3 1 (16.67%) NoSQL
3 1 (16.67%) RDBMS
3 1 (16.67%) Relational Database
Job Titles
1 3 (50.00%) Analyst
1 3 (50.00%) Big Data Analyst
1 3 (50.00%) Business Analyst
1 3 (50.00%) Data Business Analyst
2 2 (33.33%) Data Analyst
2 2 (33.33%) Developer
2 2 (33.33%) Java Developer
3 1 (16.67%) Architect
3 1 (16.67%) AWS Developer
3 1 (16.67%) Data Architect
3 1 (16.67%) Enterprise Architect
3 1 (16.67%) Enterprise Data Architect
3 1 (16.67%) Senior Developer
3 1 (16.67%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 1 (16.67%) Kafka
1 1 (16.67%) NumPy
1 1 (16.67%) SciPy
Miscellaneous
1 1 (16.67%) Analytical Skills
1 1 (16.67%) Data Centre
Processes & Methodologies
1 2 (33.33%) Agile Software Development
1 2 (33.33%) Business Intelligence
1 2 (33.33%) Machine Learning
1 2 (33.33%) TDD
1 2 (33.33%) Use Case
2 1 (16.67%) Analytics
2 1 (16.67%) BDD
2 1 (16.67%) Business Analysis
2 1 (16.67%) Business Analytics
2 1 (16.67%) Concurrent Programming
2 1 (16.67%) Data Analytics
2 1 (16.67%) E-Commerce
2 1 (16.67%) Logistic Regression
2 1 (16.67%) Low Latency
2 1 (16.67%) Multithreading
2 1 (16.67%) Neural Network
2 1 (16.67%) Pair Programming
2 1 (16.67%) Performance Tuning
2 1 (16.67%) Presales
Programming Languages
1 2 (33.33%) Java
1 2 (33.33%) SQL
2 1 (16.67%) MATLAB
2 1 (16.67%) Python
2 1 (16.67%) R
2 1 (16.67%) Scala
Vendors
1 1 (16.67%) Oracle
1 1 (16.67%) SAP
1 1 (16.67%) Teradata