Period
to 21 January 2018

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Apache Cassandra skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Apache Cassandra over the 6 months to 21 January 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.

Apache Cassandra
Central London > City of London
6 months to
21 Jan 2018
Same period 2017 Same period 2016
Rank 192 133 144
Rank change year-on-year -59 +11 +114
Contract jobs citing Apache Cassandra 56 104 95
As % of all contract IT jobs advertised in the City of London 0.80% 1.68% 1.34%
As % of the Database & Business Intelligence category 3.22% 6.05% 5.15%
Number of daily rates quoted 50 96 94
City of London median daily rate £568 £538 £525
Median daily rate % change year-on-year +5.58% +2.38% +10.53%
10th Percentile £472 £406 £433
90th Percentile £689 £675 £621
Central London median daily rate £538 £538 £525
% change year-on-year - +2.38% +10.53%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

Apache Cassandra is in the Databases and Business Intelligence 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 database or business intelligence skills.

All Database and Business Intelligence Skills
City of London
Contract vacancies with a requirement for database or business intelligence skills 1,739 1,719 1,845
As % of all contract IT jobs advertised in the City of London 24.88% 27.83% 26.02%
Number of daily rates quoted 1,459 1,381 1,482
City of London median daily rate £525 £475 £475
Median daily rate % change year-on-year +10.53% - +11.76%
10th Percentile £363 £325 £313
90th Percentile £688 £663 £638
Central London median daily rate £513 £475 £475
% change year-on-year +7.89% - +11.76%
Number of hourly rates quoted 6 1 6
City of London median hourly rate £27.75 £45.00 £40.00
Median hourly rate % change year-on-year -38.33% +12.50% +19.72%
10th Percentile £23.38 £42.50 £27.75
90th Percentile £33.25 £47.50 £60.00
Central London median hourly rate £27.50 £45.00 £38.75
% change year-on-year -38.89% +16.13% +27.43%

Apache Cassandra
Job Vacancy Trend in the City of London

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

Job vacancy trend for Apache Cassandra in the City of London

Apache Cassandra
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 Apache Cassandra in the City of London.

Contractor daily rate trend for Apache Cassandra in the City of London

Apache Cassandra
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Apache Cassandra in the City of London over the 6 months to 21 January 2018.

Contractor daily rate histogram for Apache Cassandra in the City of London

For the 6 months to 21 January 2018, IT contractor jobs citing Apache Cassandra 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 City of London region with a requirement for Apache Cassandra.

1 41 (73.21%) NoSQL
2 34 (60.71%) Java
3 32 (57.14%) Agile Software Development
4 30 (53.57%) Kafka
5 27 (48.21%) MongoDB
6 26 (46.43%) Apache Spark
7 23 (41.07%) Big Data
8 22 (39.29%) Hadoop
9 20 (35.71%) Amazon AWS
9 20 (35.71%) TDD
10 19 (33.93%) Jenkins
11 18 (32.14%) Continuous Integration
12 17 (30.36%) Scala
12 17 (30.36%) Python
13 16 (28.57%) HBase
14 15 (26.79%) Linux
14 15 (26.79%) Finance
14 15 (26.79%) Software Engineering
15 14 (25.00%) JavaScript
15 14 (25.00%) Apache Hive
15 14 (25.00%) Microservices
15 14 (25.00%) HDFS
15 14 (25.00%) DevOps
16 13 (23.21%) RESTful
16 13 (23.21%) SQL
17 12 (21.43%) Git (software)
17 12 (21.43%) Apache Flume
17 12 (21.43%) Analytics
18 11 (19.64%) Scrum
18 11 (19.64%) Banking

Apache Cassandra
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 26 (46.43%) Apache Spark
2 8 (14.29%) Apache Pig
2 8 (14.29%) Elasticsearch
3 6 (10.71%) Apache
4 3 (5.36%) Apache Solr
4 3 (5.36%) nginx
4 3 (5.36%) Oracle Coherence
5 2 (3.57%) Jetty
6 1 (1.79%) Apache Airflow
6 1 (1.79%) Confluence
6 1 (1.79%) JBoss
6 1 (1.79%) SAS
6 1 (1.79%) Tomcat
Applications
1 1 (1.79%) Microsoft Excel
Cloud Services
1 20 (35.71%) Amazon AWS
2 6 (10.71%) Microsoft Azure
3 5 (8.93%) Amazon SQS
3 5 (8.93%) Google Play
4 3 (5.36%) Amazon S3
4 3 (5.36%) AWS CloudFormation
5 2 (3.57%) Amazon CloudWatch
5 2 (3.57%) Amazon EC2
5 2 (3.57%) Amazon Kinesis
5 2 (3.57%) AWS CloudTrail
5 2 (3.57%) GitHub
5 2 (3.57%) PaaS
5 2 (3.57%) Route 53
5 2 (3.57%) SaaS
5 2 (3.57%) Virtual Private Cloud
6 1 (1.79%) Amazon EMR
6 1 (1.79%) BlazeMeter
6 1 (1.79%) Google Cloud Platform
6 1 (1.79%) Sauce Labs
Communications & Networking
1 3 (5.36%) HTTP
1 3 (5.36%) Kerberos
2 2 (3.57%) Firewall
2 2 (3.57%) Network Security
2 2 (3.57%) SSL
2 2 (3.57%) ZigBee
3 1 (1.79%) HTTPS
3 1 (1.79%) Internet
Database & Business Intelligence
1 41 (73.21%) NoSQL
2 27 (48.21%) MongoDB
3 23 (41.07%) Big Data
4 22 (39.29%) Hadoop
5 16 (28.57%) HBase
6 14 (25.00%) Apache Hive
7 8 (14.29%) Data Warehouse
7 8 (14.29%) MySQL
7 8 (14.29%) Relational Database
8 7 (12.50%) Amazon DynamoDB
8 7 (12.50%) Sqoop
9 6 (10.71%) Redis
10 5 (8.93%) JanusGraph
10 5 (8.93%) Neo4j
10 5 (8.93%) PostgreSQL
11 4 (7.14%) RDBMS
12 3 (5.36%) Amazon RDS
12 3 (5.36%) Amazon Redshift
12 3 (5.36%) InfluxDB
12 3 (5.36%) SQL Server
Development Applications
1 19 (33.93%) Jenkins
2 12 (21.43%) Git (software)
3 10 (17.86%) Cucumber
3 10 (17.86%) Maven
3 10 (17.86%) TeamCity
4 8 (14.29%) SonarQube
5 5 (8.93%) Gradle
6 4 (7.14%) JUnit
7 3 (5.36%) GoCD
7 3 (5.36%) Subversion
8 2 (3.57%) Artifactory
8 2 (3.57%) CircleCI
8 2 (3.57%) GitLab
8 2 (3.57%) JIRA
8 2 (3.57%) Travis CI
8 2 (3.57%) Vagrant
8 2 (3.57%) Visual Studio
9 1 (1.79%) Mockito
9 1 (1.79%) MSBuild
9 1 (1.79%) SpecFlow
General
1 15 (26.79%) Finance
2 11 (19.64%) Banking
3 7 (12.50%) Publishing
4 5 (8.93%) Retail
5 3 (5.36%) Front Office
6 2 (3.57%) Investment Banking
Job Titles
1 19 (33.93%) Developer
2 10 (17.86%) Data Engineer
3 7 (12.50%) Architect
3 7 (12.50%) Data Architect
3 7 (12.50%) Java Developer
4 6 (10.71%) DevOps Engineer
4 6 (10.71%) Software Engineer
5 5 (8.93%) Big Data Architect
5 5 (8.93%) Big Data Engineer
5 5 (8.93%) Senior Developer
6 4 (7.14%) AWS Engineer
7 3 (5.36%) AWS DevOps
7 3 (5.36%) AWS DevOps Engineer
7 3 (5.36%) Consultant
7 3 (5.36%) Scala Developer
7 3 (5.36%) Senior Software Engineer
8 2 (3.57%) Cassandra Developer
8 2 (3.57%) Hadoop Architect
8 2 (3.57%) Infrastructure Engineer
8 2 (3.57%) Python Developer
Libraries, Frameworks & Software Standards
1 30 (53.57%) Kafka
2 13 (23.21%) RESTful
3 10 (17.86%) Web Services
4 9 (16.07%) Spring
5 8 (14.29%) React
6 7 (12.50%) Redux
7 6 (10.71%) HTML
7 6 (10.71%) HTML5
7 6 (10.71%) Spring Boot
8 5 (8.93%) Android SDK
8 5 (8.93%) CSS
8 5 (8.93%) Elastic Stack
8 5 (8.93%) gRPC
8 5 (8.93%) iOS SDK
8 5 (8.93%) Node.js
8 5 (8.93%) React Native
8 5 (8.93%) ReactiveX
8 5 (8.93%) Spring Security
9 4 (7.14%) Akka
9 4 (7.14%) TensorFlow
Miscellaneous
1 10 (17.86%) Analytical Skills
2 7 (12.50%) Mobile App
3 5 (8.93%) Fintech
4 4 (7.14%) Data Centre
4 4 (7.14%) Derivative
5 3 (5.36%) Algorithms
5 3 (5.36%) Credit Risk
5 3 (5.36%) Interest Rate Derivative
5 3 (5.36%) Market Risk
6 2 (3.57%) Greenfield Project
6 2 (3.57%) iPad
6 2 (3.57%) Linux Command Line
6 2 (3.57%) Replication
7 1 (1.79%) Clustering
7 1 (1.79%) Computer Science
7 1 (1.79%) Grid Computing
Operating Systems
1 15 (26.79%) Linux
2 7 (12.50%) Android
2 7 (12.50%) Apple iOS
3 4 (7.14%) Unix
4 3 (5.36%) Red Hat Enterprise Linux
5 2 (3.57%) Debian
5 2 (3.57%) Ubuntu
6 1 (1.79%) CentOS
6 1 (1.79%) Fedora
6 1 (1.79%) Windows
6 1 (1.79%) Windows Server
6 1 (1.79%) Windows Server 2008
Processes & Methodologies
1 32 (57.14%) Agile Software Development
2 20 (35.71%) TDD
3 18 (32.14%) Continuous Integration
4 15 (26.79%) Software Engineering
5 14 (25.00%) DevOps
5 14 (25.00%) Microservices
6 12 (21.43%) Analytics
7 11 (19.64%) Scrum
8 10 (17.86%) BDD
8 10 (17.86%) Machine Learning
8 10 (17.86%) MapReduce
9 9 (16.07%) ETL
10 7 (12.50%) E-Commerce
11 5 (8.93%) Business Intelligence
11 5 (8.93%) Configuration Management
11 5 (8.93%) CQRS
11 5 (8.93%) Data Modelling
11 5 (8.93%) Domain-Driven Design
11 5 (8.93%) Open Source
11 5 (8.93%) Pair Programming
Programming Languages
1 34 (60.71%) Java
2 17 (30.36%) Python
2 17 (30.36%) Scala
3 14 (25.00%) JavaScript
4 13 (23.21%) SQL
5 8 (14.29%) Bash Shell
6 7 (12.50%) Shell Script
7 6 (10.71%) Objective-C
8 5 (8.93%) ES6
8 5 (8.93%) GraphQL
9 4 (7.14%) Ruby
10 3 (5.36%) Clojure
10 3 (5.36%) Kotlin
11 1 (1.79%) C#
11 1 (1.79%) R
11 1 (1.79%) XAML
Qualifications
1 2 (3.57%) Degree
1 2 (3.57%) Numerate Degree
2 1 (1.79%) Computer Science Degree
System Software
1 14 (25.00%) HDFS
2 12 (21.43%) Apache Flume
3 9 (16.07%) Docker
4 8 (14.29%) Apache ZooKeeper
5 2 (3.57%) Active Directory
5 2 (3.57%) Firmware
5 2 (3.57%) VirtualBox
Systems Management
1 9 (16.07%) Oozie
2 8 (14.29%) Ansible
3 6 (10.71%) Puppet
4 5 (8.93%) Grafana
4 5 (8.93%) Hadoop YARN
4 5 (8.93%) Terraform
5 4 (7.14%) Mesos
6 3 (5.36%) Kibana
6 3 (5.36%) logstash
7 2 (3.57%) Ambari
7 2 (3.57%) Apache Slider
7 2 (3.57%) HAProxy
7 2 (3.57%) Kubernetes
7 2 (3.57%) Nagios
7 2 (3.57%) Packer
8 1 (1.79%) BladeLogic
8 1 (1.79%) CA Service Virtualization
8 1 (1.79%) Opscode Chef
8 1 (1.79%) Salt
Vendors
1 9 (16.07%) Hortonworks
2 7 (12.50%) Oracle
3 6 (10.71%) Cloudera
3 6 (10.71%) Google
3 6 (10.71%) Microsoft
4 5 (8.93%) Apple
5 4 (7.14%) Tableau
6 3 (5.36%) MapR
6 3 (5.36%) Talend
7 2 (3.57%) Cognos
7 2 (3.57%) IBM
7 2 (3.57%) Informatica
7 2 (3.57%) New Relic
7 2 (3.57%) SAP
7 2 (3.57%) Vertica
8 1 (1.79%) AppDynamics
8 1 (1.79%) CA
8 1 (1.79%) Perfecto Mobile
8 1 (1.79%) SaltStack
8 1 (1.79%) Teradata