Period
to 25 February 2020

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 25 February 2020 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
25 Feb 2020
Same period 2019 Same period 2018
Rank 292 299 312
Rank change year-on-year +7 +13 -6
Permanent jobs citing HDFS 12 36 30
As % of all permanent IT jobs advertised in the City of London 0.13% 0.35% 0.28%
As % of the System Software category 0.77% 2.02% 2.00%
Number of salaries quoted 11 33 30
City of London median annual salary £72,500 £75,000 £83,750
Median salary % change year-on-year -3.33% -10.45% -16.25%
10th Percentile £50,000 £49,337 £53,750
90th Percentile £80,000 £93,250 £112,625
Central London median annual salary £72,500 £75,000 £83,750
% change year-on-year -3.33% -10.45% -11.84%

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 1,567 1,780 1,500
As % of all permanent IT jobs advertised in the City of London 17.25% 17.18% 14.12%
Number of salaries quoted 1,372 1,606 1,394
City of London median annual salary £65,000 £62,500 £55,000
Median salary % change year-on-year +4.00% +13.64% +4.76%
10th Percentile £27,750 £31,250 £31,250
90th Percentile £97,500 £95,000 £87,500
Central London median annual salary £65,000 £60,000 £55,000
% change year-on-year +8.33% +9.09% +10.00%

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 25 February 2020.

Salary histogram for HDFS in the City of London

For the 6 months to 25 February 2020, 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 12 (100.00%) Hadoop
2 10 (83.33%) Big Data
2 10 (83.33%) Python
2 10 (83.33%) Apache Spark
3 9 (75.00%) Agile Software Development
3 9 (75.00%) Apache Hive
4 7 (58.33%) Azure
4 7 (58.33%) Java
4 7 (58.33%) SQL
4 7 (58.33%) Apache
4 7 (58.33%) Data Engineering
5 6 (50.00%) Machine Learning
5 6 (50.00%) Continuous Integration
6 5 (41.67%) NoSQL
6 5 (41.67%) Scala
6 5 (41.67%) ETL
6 5 (41.67%) Retail
6 5 (41.67%) Software Engineering
7 4 (33.33%) MapR
7 4 (33.33%) Data Science
7 4 (33.33%) Data Management
7 4 (33.33%) Data Modelling
7 4 (33.33%) Business Intelligence
7 4 (33.33%) Linux
7 4 (33.33%) QA
7 4 (33.33%) Data Cleansing
7 4 (33.33%) Data Quality
8 3 (25.00%) MapReduce
8 3 (25.00%) Hortonworks
8 3 (25.00%) Cloudera

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 10 (83.33%) Apache Spark
2 7 (58.33%) Apache
3 3 (25.00%) Apache Pig
4 1 (8.33%) Apache Airflow
4 1 (8.33%) SAS
Cloud Services
1 7 (58.33%) Azure
2 3 (25.00%) Amazon EMR
2 3 (25.00%) Amazon S3
3 1 (8.33%) Power Platform
Database & Business Intelligence
1 12 (100.00%) Hadoop
2 10 (83.33%) Big Data
3 9 (75.00%) Apache Hive
4 5 (41.67%) NoSQL
5 3 (25.00%) Data Warehouse
5 3 (25.00%) HDInsight
5 3 (25.00%) Neo4j
5 3 (25.00%) PostgreSQL
5 3 (25.00%) RDBMS
5 3 (25.00%) Relational Database
5 3 (25.00%) SQL Server
5 3 (25.00%) Sqoop
6 2 (16.67%) HBase
6 2 (16.67%) Redis
7 1 (8.33%) Power BI
7 1 (8.33%) QlikView
Development Applications
1 3 (25.00%) Git (software)
1 3 (25.00%) Jenkins
1 3 (25.00%) JIRA
1 3 (25.00%) JUnit
1 3 (25.00%) Octopus Deploy
1 3 (25.00%) TeamCity
1 3 (25.00%) Visual Studio Team System
General
1 5 (41.67%) Retail
2 3 (25.00%) Legal
2 3 (25.00%) Marketing
3 2 (16.67%) Finance
4 1 (8.33%) Public Sector
Job Titles
1 7 (58.33%) Data Engineer
2 5 (41.67%) Senior Data Engineer
3 3 (25.00%) Big Data Engineer
3 3 (25.00%) Data Scientist
3 3 (25.00%) Senior Data Scientist
4 2 (16.67%) Developer
4 2 (16.67%) Java Developer
4 2 (16.67%) Java Developer - Fintech
Libraries, Frameworks & Software Standards
1 3 (25.00%) LAPP Stack
1 3 (25.00%) PySpark
2 2 (16.67%) Kafka
Miscellaneous
1 2 (16.67%) Algorithms
Operating Systems
1 4 (33.33%) Linux
Processes & Methodologies
1 9 (75.00%) Agile Software Development
2 7 (58.33%) Data Engineering
3 6 (50.00%) Continuous Integration
3 6 (50.00%) Machine Learning
4 5 (41.67%) ETL
4 5 (41.67%) Software Engineering
5 4 (33.33%) Business Intelligence
5 4 (33.33%) Data Cleansing
5 4 (33.33%) Data Management
5 4 (33.33%) Data Modelling
5 4 (33.33%) Data Science
6 3 (25.00%) Data Development
6 3 (25.00%) Data Integration
6 3 (25.00%) Information Security
6 3 (25.00%) MapReduce
6 3 (25.00%) Naive Bayes
6 3 (25.00%) Neural Network
6 3 (25.00%) Operations Research
6 3 (25.00%) Software Delivery
6 3 (25.00%) TDD
Programming Languages
1 10 (83.33%) Python
2 7 (58.33%) Java
2 7 (58.33%) SQL
3 5 (41.67%) Scala
4 3 (25.00%) R
4 3 (25.00%) Shell Script
5 2 (16.67%) Java 8
Quality Assurance & Compliance
1 4 (33.33%) Data Quality
1 4 (33.33%) QA
2 3 (25.00%) GDPR
2 3 (25.00%) ISO/IEC 27001
System Software
1 3 (25.00%) Apache Flume
Systems Management
1 3 (25.00%) Ansible
1 3 (25.00%) Hadoop YARN
1 3 (25.00%) Terraform
Vendors
1 4 (33.33%) MapR
2 3 (25.00%) Cloudera
2 3 (25.00%) Hortonworks
3 1 (8.33%) Alteryx
3 1 (8.33%) Tableau