Period
to 16 December 2018

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for HDFS skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited HDFS over the 6 months to 16 December 2018 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.

Hadoop Distributed File System (HDFS)
Central London > City of London
6 months to
16 Dec 2018
Same period 2017 Same period 2016
Rank 222 174 203
Rank change year-on-year -48 +29 +41
Contract jobs citing HDFS 35 78 37
As % of all contract IT jobs advertised in the City of London 0.50% 1.09% 0.57%
As % of the System Software category 2.85% 8.93% 5.28%
Number of daily rates quoted 32 71 24
City of London median daily rate £575 £625 £609
Median daily rate % change year-on-year -8.00% +2.67% +10.68%
10th Percentile £513 £525 £458
90th Percentile £650 £725 £675
Central London median daily rate £575 £625 £580
% change year-on-year -8.00% +7.76% +5.45%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

HDFS is in the System Software category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for system software skills.

All System Software Skills
City of London
Contract vacancies with a requirement for system software skills 1,227 873 701
As % of all contract IT jobs advertised in the City of London 17.39% 12.22% 10.73%
Number of daily rates quoted 965 690 543
City of London median daily rate £500 £490 £450
Median daily rate % change year-on-year +2.04% +8.89% +5.88%
10th Percentile £157 £200 £206
90th Percentile £650 £656 £638
Central London median daily rate £525 £485 £450
% change year-on-year +8.25% +7.78% +5.88%
Number of hourly rates quoted 35 26 20
City of London median hourly rate £19.25 £16.50 £23.88
Median hourly rate % change year-on-year +16.67% -30.89% +36.51%
10th Percentile £13.59 £10.38 £12.38
90th Percentile £25.50 £26.63 £59.50
Central London median hourly rate £19.25 £16.50 £19.00
% change year-on-year +16.67% -13.16% +11.76%

HDFS
Job Vacancy Trend in the City of London

Job postings citing HDFS as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for HDFS in the City of London

HDFS
Contractor Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing HDFS in the City of London.

Contractor daily rate trend for HDFS in the City of London

HDFS
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing HDFS in the City of London over the 6 months to 16 December 2018.

Contractor daily rate histogram for HDFS in the City of London

HDFS
Contract Job Locations in the City of London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing HDFS within the City of London region over the 6 months to 16 December 2018. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
London Bridge - 10 £525 -
HDFS
Central London

For the 6 months to 16 December 2018, IT contractor jobs citing HDFS 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 City of London region with a requirement for HDFS.

1 35 (100.00%) Hadoop
2 22 (62.86%) Apache Hive
3 21 (60.00%) Big Data
4 20 (57.14%) Impala
4 20 (57.14%) Apache Spark
4 20 (57.14%) Agile Software Development
5 18 (51.43%) Oracle
5 18 (51.43%) SQL Server
5 18 (51.43%) Unix
6 17 (48.57%) Hadoop YARN
7 15 (42.86%) Python
8 14 (40.00%) Linux
8 14 (40.00%) Java
8 14 (40.00%) Sqoop
8 14 (40.00%) Jenkins
8 14 (40.00%) Amazon AWS
9 12 (34.29%) ETL
9 12 (34.29%) Continuous Integration
10 11 (31.43%) Test Automation
10 11 (31.43%) Data Analysis
10 11 (31.43%) SQL
10 11 (31.43%) Cloudera
11 10 (28.57%) Kafka
11 10 (28.57%) Opscode Chef
11 10 (28.57%) Ansible
11 10 (28.57%) Virtual Private Cloud
11 10 (28.57%) Amazon EC2
11 10 (28.57%) Amazon S3
11 10 (28.57%) Bash Shell
11 10 (28.57%) Build Automation

HDFS
Co-occurring IT Skills in the City of London 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 20 (57.14%) Apache Spark
2 8 (22.86%) Apache
2 8 (22.86%) Confluence
3 5 (14.29%) Apache Pig
4 2 (5.71%) Apache Solr
5 1 (2.86%) Elasticsearch
Applications
1 10 (28.57%) Microsoft Excel
1 10 (28.57%) MS Visio
Cloud Services
1 14 (40.00%) Amazon AWS
2 10 (28.57%) Amazon EC2
2 10 (28.57%) Amazon S3
2 10 (28.57%) Virtual Private Cloud
3 4 (11.43%) Microsoft Azure
4 3 (8.57%) GitHub
4 3 (8.57%) IBM Cloud
5 2 (5.71%) Google Cloud Platform
Communications & Networking
1 4 (11.43%) Kerberos
2 1 (2.86%) SSL
Database & Business Intelligence
1 35 (100.00%) Hadoop
2 22 (62.86%) Apache Hive
3 21 (60.00%) Big Data
4 20 (57.14%) Impala
5 18 (51.43%) SQL Server
6 14 (40.00%) Sqoop
7 8 (22.86%) Apache Kudu
7 8 (22.86%) Relational Database
8 7 (20.00%) HBase
9 3 (8.57%) PostgreSQL
10 2 (5.71%) Apache Cassandra
10 2 (5.71%) MongoDB
10 2 (5.71%) NoSQL
Development Applications
1 14 (40.00%) Jenkins
2 9 (25.71%) Cucumber
2 9 (25.71%) Git (software)
3 8 (22.86%) Atlassian Bamboo
3 8 (22.86%) FishEye
3 8 (22.86%) JIRA
3 8 (22.86%) jMock
3 8 (22.86%) JUnit
3 8 (22.86%) Maven
3 8 (22.86%) Subversion
4 1 (2.86%) ER Studio
4 1 (2.86%) Gerrit
4 1 (2.86%) JBehave
4 1 (2.86%) Selenium
General
1 8 (22.86%) Front Office
2 3 (8.57%) Banking
2 3 (8.57%) Finance
3 1 (2.86%) Retail
Job Titles
1 11 (31.43%) Developer
2 10 (28.57%) Apache Spark Developer
2 10 (28.57%) Platform Engineer
3 9 (25.71%) Java Developer
4 7 (20.00%) Data Engineer
5 6 (17.14%) Big Data Engineer
6 5 (14.29%) Administrator
6 5 (14.29%) Hadoop Administrator
7 2 (5.71%) AWS Developer
7 2 (5.71%) Big Data Developer
7 2 (5.71%) Scala Developer
7 2 (5.71%) Senior Big Data Developer
7 2 (5.71%) Senior Developer
8 1 (2.86%) Consultant
8 1 (2.86%) Data Modeller
8 1 (2.86%) Hadoop Consultant
8 1 (2.86%) Hadoop Developer
8 1 (2.86%) Principal Consultant
8 1 (2.86%) Quality Engineer
8 1 (2.86%) Senior Scala Developer
Libraries, Frameworks & Software Standards
1 10 (28.57%) Kafka
2 3 (8.57%) LDAP
2 3 (8.57%) PySpark
3 1 (2.86%) CSS
3 1 (2.86%) CSS3
3 1 (2.86%) Dask
3 1 (2.86%) Gherkin
3 1 (2.86%) HTML
3 1 (2.86%) HTML5
3 1 (2.86%) JSON
3 1 (2.86%) XML
Miscellaneous
1 10 (28.57%) Wiki
2 2 (5.71%) Greenfield Project
2 2 (5.71%) Private Cloud
Operating Systems
1 18 (51.43%) Unix
2 14 (40.00%) Linux
3 10 (28.57%) Windows
4 3 (8.57%) Red Hat Enterprise Linux
Processes & Methodologies
1 20 (57.14%) Agile Software Development
2 12 (34.29%) Continuous Integration
2 12 (34.29%) ETL
3 11 (31.43%) Data Analysis
3 11 (31.43%) Test Automation
4 10 (28.57%) Build Automation
4 10 (28.57%) Data Extraction
4 10 (28.57%) Scrum
5 9 (25.71%) BDD
5 9 (25.71%) Data Modelling
5 9 (25.71%) SDLC
5 9 (25.71%) TDD
6 8 (22.86%) Business Intelligence
6 8 (22.86%) Change Control
6 8 (22.86%) Dimensional Modelling
6 8 (22.86%) Domain Models
6 8 (22.86%) Logical Data Model
6 8 (22.86%) MapReduce
6 8 (22.86%) Physical Data Model
6 8 (22.86%) Visualisation
Programming Languages
1 15 (42.86%) Python
2 14 (40.00%) Java
3 11 (31.43%) SQL
4 10 (28.57%) Bash Shell
4 10 (28.57%) Korn
4 10 (28.57%) PowerShell
4 10 (28.57%) Shell Script
5 9 (25.71%) Java 8
6 4 (11.43%) Scala
7 2 (5.71%) JavaScript
8 1 (2.86%) Groovy
8 1 (2.86%) Pig Latin
8 1 (2.86%) Ruby
Quality Assurance & Compliance
1 1 (2.86%) Data Quality
System Software
1 4 (11.43%) Apache Flume
2 1 (2.86%) Active Directory
2 1 (2.86%) Apache ZooKeeper
Systems Management
1 17 (48.57%) Hadoop YARN
2 10 (28.57%) Ansible
2 10 (28.57%) Opscode Chef
2 10 (28.57%) Puppet
3 6 (17.14%) Ambari
4 5 (14.29%) Oozie
5 3 (8.57%) Tivoli
6 2 (5.71%) Grafana
7 1 (2.86%) Apache Slider
Vendors
1 18 (51.43%) Oracle
2 11 (31.43%) Cloudera
3 8 (22.86%) Atlassian
3 8 (22.86%) Sybase
4 6 (17.14%) Hortonworks
5 3 (8.57%) IBM
5 3 (8.57%) Tableau
6 2 (5.71%) Google
6 2 (5.71%) Red Hat