Period
to 19 September 2018

The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for HDFS skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited HDFS over the 6 months to 19 September 2018 with a comparison to the same period in the previous 2 years.

Hadoop Distributed File System (HDFS)
Central London > City of London
6 months to
19 Sep 2018
Same period 2017 Same period 2016
Rank 325 298 330
Rank change year-on-year -27 +32 +86
Permanent jobs citing HDFS 29 33 27
As % of all permanent IT jobs advertised in the City of London 0.26% 0.32% 0.22%
As % of the System Software category 1.79% 2.22% 1.81%
Number of salaries quoted 25 32 25
City of London median annual salary £75,000 £68,750 £100,000
Median salary % change year-on-year +9.09% -31.25% +29.03%
10th Percentile £50,250 £55,000 £55,500
90th Percentile £92,250 £102,500 £105,000
Central London median annual salary £75,000 £67,500 £100,000
% change year-on-year +11.11% -32.50% +33.33%

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

All System Software Skills
City of London
Permanent vacancies with a requirement for system software skills 1,621 1,489 1,489
As % of all permanent IT jobs advertised in the City of London 14.73% 14.58% 11.97%
Number of salaries quoted 1,501 1,367 1,364
City of London median annual salary £60,000 £55,000 £52,500
Median salary % change year-on-year +9.09% +4.76% +10.53%
10th Percentile £29,250 £29,550 £28,250
90th Percentile £95,000 £82,500 £80,000
Central London median annual salary £60,000 £53,000 £50,000
% change year-on-year +13.21% +6.00% +11.11%

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
Salary Trend in the City of London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing HDFS in the City of London.

Salary trend for HDFS in the City of London

HDFS
Salary Histogram in the City of London

The salary distribution of IT jobs citing HDFS in the City of London over the 6 months to 19 September 2018.

Salary histogram for HDFS in the City of London

HDFS
Job Locations in the City of London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing HDFS within the City of London region over the 6 months to 19 September 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
London Bridge - 4 £80,000 -
HDFS
Central London

For the 6 months to 19 September 2018, IT 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 permanent job ads across the City of London region with a requirement for HDFS.

1 22 (75.86%) Hadoop
1 22 (75.86%) Big Data
2 20 (68.97%) Apache Hive
3 19 (65.52%) Apache Spark
4 17 (58.62%) Java
4 17 (58.62%) SQL
5 16 (55.17%) Python
5 16 (55.17%) Scala
5 16 (55.17%) Kafka
6 15 (51.72%) Finance
7 13 (44.83%) Amazon AWS
8 10 (34.48%) Open Source
8 10 (34.48%) Linux
8 10 (34.48%) SQL Server
8 10 (34.48%) Oozie
9 8 (27.59%) Data Engineering
9 8 (27.59%) Banking
10 7 (24.14%) Agile Software Development
10 7 (24.14%) ETL
10 7 (24.14%) Microsoft
10 7 (24.14%) HBase
11 6 (20.69%) Hortonworks
11 6 (20.69%) Amazon Redshift
11 6 (20.69%) Fintech
11 6 (20.69%) Data Science
11 6 (20.69%) Continuous Integration
11 6 (20.69%) Apache Cassandra
12 5 (17.24%) NoSQL
12 5 (17.24%) Microsoft Azure
12 5 (17.24%) Google

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 19 (65.52%) Apache Spark
2 4 (13.79%) Elasticsearch
3 3 (10.34%) Apache
3 3 (10.34%) Apache Solr
3 3 (10.34%) Oracle Workflow
4 1 (3.45%) Apache Pig
Cloud Services
1 13 (44.83%) Amazon AWS
2 5 (17.24%) Amazon EMR
2 5 (17.24%) Microsoft Azure
3 4 (13.79%) Amazon EC2
4 2 (6.90%) Amazon Kinesis
4 2 (6.90%) GitHub
Communications & Networking
1 4 (13.79%) Firewall
1 4 (13.79%) Kerberos
1 4 (13.79%) SSL
2 3 (10.34%) TCP/IP
2 3 (10.34%) VPN
3 2 (6.90%) VLAN
Database & Business Intelligence
1 22 (75.86%) Big Data
1 22 (75.86%) Hadoop
2 20 (68.97%) Apache Hive
3 10 (34.48%) SQL Server
4 7 (24.14%) HBase
5 6 (20.69%) Amazon Redshift
5 6 (20.69%) Apache Cassandra
6 5 (17.24%) Data Warehouse
6 5 (17.24%) NoSQL
6 5 (17.24%) Sqoop
7 4 (13.79%) MariaDB
7 4 (13.79%) Relational Database
7 4 (13.79%) Scylla
7 4 (13.79%) SQL Server 2008
7 4 (13.79%) SQL Server 2012
7 4 (13.79%) SQL Server 2014
7 4 (13.79%) SQL Server Integration Services
8 3 (10.34%) Amazon DynamoDB
8 3 (10.34%) OpenTSDB
8 3 (10.34%) Parquet
Development Applications
1 4 (13.79%) Jenkins
2 2 (6.90%) Hudson
2 2 (6.90%) JUnit
2 2 (6.90%) Maven
General
1 15 (51.72%) Finance
2 8 (27.59%) Banking
3 4 (13.79%) Marketing
3 4 (13.79%) Telecoms
4 2 (6.90%) Retail
Job Titles
1 7 (24.14%) Developer
2 5 (17.24%) Big Data Engineer
2 5 (17.24%) Data Engineer
2 5 (17.24%) Senior Developer
3 4 (13.79%) Big Data Developer
3 4 (13.79%) Database Engineer
3 4 (13.79%) Senior Database Engineer
4 3 (10.34%) .NET Developer
4 3 (10.34%) Administrator
4 3 (10.34%) AWS Developer
4 3 (10.34%) AWS Engineer
4 3 (10.34%) C# Developer
4 3 (10.34%) Data Scientist
4 3 (10.34%) F# Developer
4 3 (10.34%) Ruby Developer
4 3 (10.34%) Scala Developer
4 3 (10.34%) Senior .NET Developer
4 3 (10.34%) Senior C# .NET Developer
4 3 (10.34%) Senior C# Developer
4 3 (10.34%) Senior Scala Developer
Libraries, Frameworks & Software Standards
1 16 (55.17%) Kafka
2 5 (17.24%) React
3 4 (13.79%) Elastic Stack
3 4 (13.79%) LDAP
4 3 (10.34%) .NET
4 3 (10.34%) AngularJS
4 3 (10.34%) Apache Thrift
4 3 (10.34%) ASP.NET
4 3 (10.34%) ASP.NET MVC
4 3 (10.34%) ASP.NET Web API
4 3 (10.34%) D3.js
4 3 (10.34%) PostGIS
4 3 (10.34%) Protocol Buffers
4 3 (10.34%) RabbitMQ
4 3 (10.34%) Samza
5 2 (6.90%) Apache Avro
5 2 (6.90%) JAX-RS
5 2 (6.90%) JMS
5 2 (6.90%) Natural Language Processing
5 2 (6.90%) REST
Miscellaneous
1 6 (20.69%) Fintech
2 4 (13.79%) Analytical Skills
3 3 (10.34%) Greenfield Project
4 2 (6.90%) Algorithms
4 2 (6.90%) Computer Science
4 2 (6.90%) Derivative
4 2 (6.90%) Life Science
4 2 (6.90%) Management Information System
4 2 (6.90%) Social Network
5 1 (3.45%) Tandem
Operating Systems
1 10 (34.48%) Linux
2 5 (17.24%) Unix
3 4 (13.79%) CentOS
3 4 (13.79%) Red Hat Enterprise Linux
4 1 (3.45%) Windows
4 1 (3.45%) Windows Server
Processes & Methodologies
1 10 (34.48%) Open Source
2 8 (27.59%) Data Engineering
3 7 (24.14%) Agile Software Development
3 7 (24.14%) ETL
4 6 (20.69%) Continuous Integration
4 6 (20.69%) Data Science
5 5 (17.24%) Change Management
5 5 (17.24%) Machine Learning
6 4 (13.79%) Campaign Management
6 4 (13.79%) Customer Engagement
6 4 (13.79%) Data Modelling
6 4 (13.79%) Digital Marketing
6 4 (13.79%) ETL Development
6 4 (13.79%) ITIL
6 4 (13.79%) Mentoring
6 4 (13.79%) Requirements Analysis
6 4 (13.79%) SDLC
6 4 (13.79%) TDD
6 4 (13.79%) Visualisation
7 3 (10.34%) Database Mirroring
Programming Languages
1 17 (58.62%) Java
1 17 (58.62%) SQL
2 16 (55.17%) Python
2 16 (55.17%) Scala
3 5 (17.24%) JavaScript
4 4 (13.79%) Bash Shell
4 4 (13.79%) Java 8
4 4 (13.79%) T-SQL
5 3 (10.34%) C#
5 3 (10.34%) CoffeeScript
5 3 (10.34%) F#
5 3 (10.34%) Korn
5 3 (10.34%) Perl
5 3 (10.34%) PL/SQL
5 3 (10.34%) Ruby
6 2 (6.90%) C++
6 2 (6.90%) Julia
6 2 (6.90%) R
6 2 (6.90%) Shell Script
7 1 (3.45%) PowerShell
Qualifications
1 1 (3.45%) DV Cleared
1 1 (3.45%) Security Cleared
Quality Assurance & Compliance
1 2 (6.90%) Data Quality
System Software
1 5 (17.24%) Apache ZooKeeper
1 5 (17.24%) Docker
2 3 (10.34%) Oracle RAC
3 2 (6.90%) Apache Flume
4 1 (3.45%) Active Directory
4 1 (3.45%) Virtual Machines
4 1 (3.45%) VMware Infrastructure
4 1 (3.45%) vSphere
Systems Management
1 10 (34.48%) Oozie
2 4 (13.79%) Kibana
2 4 (13.79%) logstash
2 4 (13.79%) Mesos
3 3 (10.34%) Data Guard
3 3 (10.34%) Graphite
3 3 (10.34%) Oracle RMAN
3 3 (10.34%) Puppet
4 2 (6.90%) Grafana
4 2 (6.90%) Hadoop YARN
4 2 (6.90%) Kubernetes
4 2 (6.90%) Prometheus
5 1 (3.45%) Check_MK
5 1 (3.45%) Nagios
5 1 (3.45%) Rsyslog
Vendors
1 7 (24.14%) Microsoft
2 6 (20.69%) Hortonworks
3 5 (17.24%) Google
4 4 (13.79%) Informatica
5 3 (10.34%) Oracle
5 3 (10.34%) Sun
6 1 (3.45%) Atlassian
6 1 (3.45%) Cloudera
6 1 (3.45%) MapR
6 1 (3.45%) Talend
6 1 (3.45%) VMware