Period
to 19 June 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 19 June 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
19 Jun 2018
Same period 2017 Same period 2016
Rank 205 212 215
Rank change year-on-year +7 +3 +57
Contract jobs citing HDFS 48 25 13
As % of all contract IT jobs advertised in the City of London 0.70% 0.40% 0.20%
As % of the System Software category 4.63% 3.92% 1.93%
Number of daily rates quoted 42 22 12
City of London median daily rate £600 £600 £481
Median daily rate % change year-on-year - +24.68% -18.09%
10th Percentile £473 £497 £376
90th Percentile £675 £720 £818
Central London median daily rate £575 £600 £425
% change year-on-year -4.17% +41.18% -26.88%
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 1,036 637 672
As % of all contract IT jobs advertised in the City of London 15.02% 10.27% 10.25%
Number of daily rates quoted 829 523 535
City of London median daily rate £500 £468 £450
Median daily rate % change year-on-year +6.95% +3.89% +12.50%
10th Percentile £215 £201 £213
90th Percentile £638 £625 £600
Central London median daily rate £500 £450 £450
% change year-on-year +11.11% - +12.50%
Number of hourly rates quoted 34 13 34
City of London median hourly rate £19.63 £21.25 £15.63
Median hourly rate % change year-on-year -7.65% +36.00% -16.44%
10th Percentile £11.81 £13.10 £11.25
90th Percentile £23.60 £175.75 £22.44
Central London median hourly rate £20.00 £21.25 £15.75
% change year-on-year -5.88% +34.92% -14.86%

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 19 June 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 19 June 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 - 7 £525 -
HDFS
Central London

For the 6 months to 19 June 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 48 (100.00%) Hadoop
2 40 (83.33%) Apache Hive
3 39 (81.25%) Apache Spark
4 38 (79.17%) Big Data
5 32 (66.67%) Python
6 28 (58.33%) ETL
7 24 (50.00%) SQL
8 22 (45.83%) Analytics
9 21 (43.75%) Amazon AWS
10 19 (39.58%) Hadoop YARN
11 18 (37.50%) Java
11 18 (37.50%) Linux
12 15 (31.25%) Scala
12 15 (31.25%) Sqoop
13 14 (29.17%) Apache Cassandra
14 13 (27.08%) Microsoft Azure
14 13 (27.08%) Agile Software Development
15 12 (25.00%) SQL Server
15 12 (25.00%) HBase
15 12 (25.00%) Jenkins
15 12 (25.00%) Cloudera
15 12 (25.00%) Oozie
16 11 (22.92%) Hortonworks
16 11 (22.92%) Kafka
16 11 (22.92%) Apache Flume
16 11 (22.92%) Apache Pig
16 11 (22.92%) Apache Solr
17 10 (20.83%) Continuous Integration
17 10 (20.83%) Apache ZooKeeper
17 10 (20.83%) Shell Script

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 39 (81.25%) Apache Spark
2 11 (22.92%) Apache Pig
2 11 (22.92%) Apache Solr
3 6 (12.50%) Apache
4 2 (4.17%) Tomcat
5 1 (2.08%) Confluence
5 1 (2.08%) Elasticsearch
Applications
1 5 (10.42%) Microsoft Excel
1 5 (10.42%) MS Visio
Cloud Services
1 21 (43.75%) Amazon AWS
2 13 (27.08%) Microsoft Azure
3 6 (12.50%) Amazon S3
4 5 (10.42%) Amazon EC2
4 5 (10.42%) Virtual Private Cloud
5 1 (2.08%) Amazon EMR
5 1 (2.08%) Azure Data Factory
5 1 (2.08%) Yarn
Communications & Networking
1 10 (20.83%) Kerberos
2 6 (12.50%) SSL
3 1 (2.08%) HTTP
Database & Business Intelligence
1 48 (100.00%) Hadoop
2 40 (83.33%) Apache Hive
3 38 (79.17%) Big Data
4 15 (31.25%) Sqoop
5 14 (29.17%) Apache Cassandra
6 12 (25.00%) HBase
6 12 (25.00%) SQL Server
7 10 (20.83%) Impala
8 9 (18.75%) Data Warehouse
8 9 (18.75%) NoSQL
9 8 (16.67%) Amazon Redshift
9 8 (16.67%) Relational Database
10 7 (14.58%) MongoDB
11 5 (10.42%) PostgreSQL
11 5 (10.42%) RDBMS
11 5 (10.42%) SQL Server Integration Services
12 4 (8.33%) Apache Kudu
13 3 (6.25%) Data Lake
13 3 (6.25%) SQL Server 2014
14 2 (4.17%) SQL Server 2012
Development Applications
1 12 (25.00%) Jenkins
2 8 (16.67%) Git (software)
3 6 (12.50%) JUnit
4 5 (10.42%) TeamCity
5 2 (4.17%) Maven
5 2 (4.17%) Subversion
6 1 (2.08%) Atlassian Bamboo
6 1 (2.08%) FishEye
6 1 (2.08%) GitLab
6 1 (2.08%) JIRA
6 1 (2.08%) jMock
General
1 9 (18.75%) Finance
2 5 (10.42%) Banking
2 5 (10.42%) Retail
3 2 (4.17%) Investment Banking
3 2 (4.17%) Marketing
Job Titles
1 21 (43.75%) Data Engineer
2 14 (29.17%) Big Data Engineer
3 10 (20.83%) Developer
4 9 (18.75%) Big Data Developer
4 9 (18.75%) Python Engineer
5 6 (12.50%) AWS Engineer
5 6 (12.50%) Consultant
6 5 (10.42%) Platform Engineer
6 5 (10.42%) Principal Consultant
7 4 (8.33%) Apache Spark Developer
7 4 (8.33%) Senior Big Data Developer
7 4 (8.33%) Senior Developer
8 3 (6.25%) AWS Developer
8 3 (6.25%) Azure Engineer
8 3 (6.25%) Hadoop Consultant
8 3 (6.25%) Hadoop Engineer
9 2 (4.17%) DevOps Engineer
9 2 (4.17%) Senior DevOps
9 2 (4.17%) Senior DevOps Engineer
9 2 (4.17%) Site Reliability Engineer
Libraries, Frameworks & Software Standards
1 11 (22.92%) Kafka
2 5 (10.42%) Keras
2 5 (10.42%) MLlib
2 5 (10.42%) scikit-learn
2 5 (10.42%) TensorFlow
3 2 (4.17%) Hibernate
3 2 (4.17%) J2EE
3 2 (4.17%) RabbitMQ
3 2 (4.17%) React
3 2 (4.17%) REST
3 2 (4.17%) Spring
3 2 (4.17%) XML
4 1 (2.08%) HTML5
4 1 (2.08%) Java EE
4 1 (2.08%) JAXB
4 1 (2.08%) JSON
4 1 (2.08%) JTA
4 1 (2.08%) JTS
4 1 (2.08%) Lucene
4 1 (2.08%) WPF
Miscellaneous
1 5 (10.42%) Greenfield Project
1 5 (10.42%) Wiki
2 4 (8.33%) Algorithms
3 2 (4.17%) Analytical Skills
4 1 (2.08%) Clustering
4 1 (2.08%) Data Centre
4 1 (2.08%) Fixed Income
4 1 (2.08%) Foreign Exchange (FX)
4 1 (2.08%) Market Risk
Operating Systems
1 18 (37.50%) Linux
2 8 (16.67%) Unix
3 5 (10.42%) Red Hat Enterprise Linux
3 5 (10.42%) Windows
4 4 (8.33%) DC/OS
Processes & Methodologies
1 28 (58.33%) ETL
2 22 (45.83%) Analytics
3 13 (27.08%) Agile Software Development
4 10 (20.83%) Continuous Integration
4 10 (20.83%) DevOps
5 9 (18.75%) E-Commerce
5 9 (18.75%) MapReduce
6 8 (16.67%) Data Engineering
7 7 (14.58%) Machine Learning
7 7 (14.58%) Predictive Analytics
8 6 (12.50%) Scrum
9 5 (10.42%) Build Automation
9 5 (10.42%) Capacity Management
9 5 (10.42%) Change Management
9 5 (10.42%) Data Analysis
9 5 (10.42%) Data Extraction
9 5 (10.42%) OOP
9 5 (10.42%) Operations Research
9 5 (10.42%) Software Delivery
9 5 (10.42%) Test Automation
Programming Languages
1 32 (66.67%) Python
2 24 (50.00%) SQL
3 18 (37.50%) Java
4 15 (31.25%) Scala
5 10 (20.83%) Shell Script
6 7 (14.58%) Bash Shell
7 5 (10.42%) Korn
7 5 (10.42%) PowerShell
7 5 (10.42%) R
8 3 (6.25%) T-SQL
9 2 (4.17%) Java 8
9 2 (4.17%) Perl
10 1 (2.08%) C#
10 1 (2.08%) ES6
10 1 (2.08%) JavaScript
10 1 (2.08%) TypeScript
System Software
1 11 (22.92%) Apache Flume
2 10 (20.83%) Apache ZooKeeper
3 6 (12.50%) Active Directory
4 5 (10.42%) Docker
Systems Management
1 19 (39.58%) Hadoop YARN
2 12 (25.00%) Oozie
3 7 (14.58%) Ansible
4 6 (12.50%) Ambari
4 6 (12.50%) Apache Slider
5 5 (10.42%) Opscode Chef
5 5 (10.42%) Puppet
6 4 (8.33%) Kubernetes
6 4 (8.33%) Mesos
Vendors
1 12 (25.00%) Cloudera
2 11 (22.92%) Hortonworks
3 5 (10.42%) MapR
3 5 (10.42%) Microsoft
3 5 (10.42%) Oracle
4 3 (6.25%) Informatica
4 3 (6.25%) Tableau
5 1 (2.08%) Atlassian
5 1 (2.08%) FXall
5 1 (2.08%) Reuters
5 1 (2.08%) Salesforce.com
5 1 (2.08%) Sybase
5 1 (2.08%) Talend