Period
to 18 November 2017

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 18 November 2017 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
18 Nov 2017
Same period 2016 Same period 2015
Rank 181 149 208
Rank change year-on-year -32 +59 +56
Contract jobs citing Apache Cassandra 68 103 65
As % of all contract IT jobs advertised in the City of London 0.96% 1.54% 0.70%
As % of the Database & Business Intelligence category 3.93% 5.86% 2.71%
Number of daily rates quoted 61 94 61
City of London median daily rate £625 £538 £525
Median daily rate % change year-on-year +16.28% +2.38% +10.53%
10th Percentile £475 £406 £450
90th Percentile £688 £688 £625
Central London median daily rate £600 £525 £525
% change year-on-year +14.29% - +5.00%
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 1729 1757 2399
As % of all contract IT jobs advertised in the City of London 24.42% 26.18% 25.95%
Number of daily rates quoted 1403 1399 1921
City of London median daily rate £525 £475 £463
Median daily rate % change year-on-year +10.53% +2.70% +6.94%
10th Percentile £363 £325 £313
90th Percentile £688 £675 £638
Central London median daily rate £525 £475 £450
% change year-on-year +10.53% +5.56% +5.88%
Number of hourly rates quoted 11 1 9
City of London median hourly rate £27.50 £45.00 £25.00
Median hourly rate % change year-on-year -38.89% +80.00% -18.88%
10th Percentile £20.75 £42.50 £16.25
90th Percentile £33.25 £47.50 £70.75
Central London median hourly rate £25.99 £45.00 £21.98
% change year-on-year -42.24% +104.78% -25.46%

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 18 November 2017.

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

For the 6 months to 18 November 2017, 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 55 (80.88%) Java
2 45 (66.18%) Agile Software Development
3 38 (55.88%) TDD
4 37 (54.41%) NoSQL
5 29 (42.65%) MongoDB
5 29 (42.65%) Big Data
5 29 (42.65%) Kafka
5 29 (42.65%) Apache Spark
6 28 (41.18%) Scala
7 24 (35.29%) Hadoop
8 23 (33.82%) Amazon AWS
8 23 (33.82%) DevOps
9 22 (32.35%) Microservices
10 21 (30.88%) Python
11 19 (27.94%) JavaScript
11 19 (27.94%) Software Engineering
12 18 (26.47%) Scrum
13 17 (25.00%) Web Services
13 17 (25.00%) Continuous Integration
13 17 (25.00%) BDD
13 17 (25.00%) Jenkins
14 16 (23.53%) Git (software)
14 16 (23.53%) SQL
15 15 (22.06%) Banking
15 15 (22.06%) HBase
16 14 (20.59%) RESTful
16 14 (20.59%) Spring
16 14 (20.59%) Objective-C
16 14 (20.59%) Finance
16 14 (20.59%) HTML

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 29 (42.65%) Apache Spark
2 14 (20.59%) Elasticsearch
3 6 (8.82%) Apache Pig
4 5 (7.35%) Apache Solr
5 4 (5.88%) Apache
6 3 (4.41%) Oracle Coherence
7 2 (2.94%) Jetty
7 2 (2.94%) nginx
8 1 (1.47%) Apache Airflow
8 1 (1.47%) Confluence
8 1 (1.47%) JBoss
8 1 (1.47%) SAS
8 1 (1.47%) Tomcat
Applications
1 1 (1.47%) Microsoft Excel
Cloud Services
1 23 (33.82%) Amazon AWS
2 7 (10.29%) Microsoft Azure
3 5 (7.35%) Google Play
4 4 (5.88%) Amazon SQS
5 3 (4.41%) Amazon S3
5 3 (4.41%) AWS CloudFormation
5 3 (4.41%) SaaS
6 2 (2.94%) Amazon CloudWatch
6 2 (2.94%) Amazon EC2
6 2 (2.94%) AWS CloudTrail
6 2 (2.94%) BlazeMeter
6 2 (2.94%) GitHub
6 2 (2.94%) Route 53
6 2 (2.94%) Virtual Private Cloud
7 1 (1.47%) Amazon EMR
7 1 (1.47%) Amazon Kinesis
7 1 (1.47%) Google Cloud Platform
7 1 (1.47%) PaaS
7 1 (1.47%) Sauce Labs
Communications & Networking
1 8 (11.76%) HTTP
2 3 (4.41%) LDAP
3 2 (2.94%) Firewall
3 2 (2.94%) Network Security
3 2 (2.94%) ZigBee
4 1 (1.47%) HTTPS
4 1 (1.47%) Internet
4 1 (1.47%) LAN
4 1 (1.47%) WAN
Database & Business Intelligence
1 37 (54.41%) NoSQL
2 29 (42.65%) Big Data
2 29 (42.65%) MongoDB
3 24 (35.29%) Hadoop
4 15 (22.06%) HBase
5 9 (13.24%) Apache Hive
5 9 (13.24%) CouchDB
5 9 (13.24%) MySQL
6 7 (10.29%) Relational Database
7 6 (8.82%) Amazon DynamoDB
7 6 (8.82%) Neo4j
7 6 (8.82%) PostgreSQL
8 5 (7.35%) Data Warehouse
8 5 (7.35%) Redis
9 4 (5.88%) RDBMS
10 3 (4.41%) Amazon RDS
10 3 (4.41%) InfluxDB
10 3 (4.41%) Spark SQL
10 3 (4.41%) SQL Server
11 2 (2.94%) Hazelcast
Development Applications
1 17 (25.00%) Jenkins
2 16 (23.53%) Git (software)
3 10 (14.71%) Cucumber
3 10 (14.71%) Maven
4 8 (11.76%) SonarQube
5 7 (10.29%) TeamCity
6 5 (7.35%) Gradle
7 3 (4.41%) JIRA
8 2 (2.94%) Artifactory
8 2 (2.94%) GoCD
8 2 (2.94%) Jasmine
8 2 (2.94%) JMeter
8 2 (2.94%) Subversion
8 2 (2.94%) Vagrant
9 1 (1.47%) Appium
9 1 (1.47%) GitLab
9 1 (1.47%) LoadUI
9 1 (1.47%) Travis CI
9 1 (1.47%) WebPagetest
9 1 (1.47%) YourKit
General
1 15 (22.06%) Banking
2 14 (20.59%) Finance
3 6 (8.82%) Publishing
4 3 (4.41%) Front Office
4 3 (4.41%) Investment Banking
5 1 (1.47%) Advertising
5 1 (1.47%) Retail
Job Titles
1 38 (55.88%) Developer
2 18 (26.47%) Java Developer
3 10 (14.71%) Big Data Developer
4 9 (13.24%) Scala Developer
5 8 (11.76%) Senior Developer
6 6 (8.82%) Architect
6 6 (8.82%) Data Architect
7 5 (7.35%) Data Engineer
7 5 (7.35%) Software Engineer
8 4 (5.88%) Big Data Architect
8 4 (5.88%) Senior Scala Developer
9 3 (4.41%) Big Data Engineer
9 3 (4.41%) DevOps Engineer
9 3 (4.41%) Hadoop Developer
9 3 (4.41%) Java Hadoop Developer
9 3 (4.41%) Node.js Developer
9 3 (4.41%) Senior Java Developer
9 3 (4.41%) Senior Software Engineer
10 2 (2.94%) Senior Architect
10 2 (2.94%) Senior Data Modeller
Libraries, Frameworks & Software Standards
1 29 (42.65%) Kafka
2 17 (25.00%) Web Services
3 14 (20.59%) HTML
3 14 (20.59%) RESTful
3 14 (20.59%) Spring
4 13 (19.12%) HTML5
4 13 (19.12%) React
5 11 (16.18%) Node.js
6 9 (13.24%) React Native
6 9 (13.24%) Redux
7 8 (11.76%) CSS
8 7 (10.29%) Play Framework
9 6 (8.82%) Akka
9 6 (8.82%) RabbitMQ
9 6 (8.82%) REST
9 6 (8.82%) Spring Boot
10 5 (7.35%) iOS SDK
10 5 (7.35%) jQuery
10 5 (7.35%) Spring MVC
10 5 (7.35%) Spring Security
Miscellaneous
1 8 (11.76%) Analytical Skills
2 7 (10.29%) Mobile App
3 6 (8.82%) Fintech
3 6 (8.82%) Greenfield Project
4 5 (7.35%) Credit Risk
4 5 (7.35%) Data Centre
5 4 (5.88%) Derivative
5 4 (5.88%) User Experience
6 3 (4.41%) Interest Rate Derivative
6 3 (4.41%) Market Risk
7 2 (2.94%) Algorithms
7 2 (2.94%) Client/Server
7 2 (2.94%) Linux Command Line
8 1 (1.47%) Clustering
8 1 (1.47%) Computer Science
8 1 (1.47%) Enterprise Software
8 1 (1.47%) Public Cloud
8 1 (1.47%) TWAP
8 1 (1.47%) Video Conferencing
8 1 (1.47%) VWAP
Operating Systems
1 12 (17.65%) Linux
2 11 (16.18%) Android
2 11 (16.18%) Apple iOS
3 9 (13.24%) Unix
4 2 (2.94%) Debian
4 2 (2.94%) Ubuntu
4 2 (2.94%) Windows
5 1 (1.47%) CentOS
5 1 (1.47%) Fedora
Processes & Methodologies
1 45 (66.18%) Agile Software Development
2 38 (55.88%) TDD
3 23 (33.82%) DevOps
4 22 (32.35%) Microservices
5 19 (27.94%) Software Engineering
6 18 (26.47%) Scrum
7 17 (25.00%) BDD
7 17 (25.00%) Continuous Integration
8 10 (14.71%) MapReduce
8 10 (14.71%) Open Source
9 9 (13.24%) Domain-Driven Design
10 8 (11.76%) Analytics
11 6 (8.82%) Continuous Delivery
11 6 (8.82%) Data Modelling
12 5 (7.35%) Android Development
12 5 (7.35%) CQRS
12 5 (7.35%) Functional Testing
12 5 (7.35%) iOS Development
12 5 (7.35%) MVC
13 4 (5.88%) Machine Learning
Programming Languages
1 55 (80.88%) Java
2 28 (41.18%) Scala
3 21 (30.88%) Python
4 19 (27.94%) JavaScript
5 16 (23.53%) SQL
6 14 (20.59%) Objective-C
7 9 (13.24%) GraphQL
8 7 (10.29%) Bash Shell
9 6 (8.82%) C#
10 5 (7.35%) ES6
10 5 (7.35%) Ruby
11 4 (5.88%) Apple Swift
12 3 (4.41%) Clojure
12 3 (4.41%) Kotlin
13 2 (2.94%) Groovy
13 2 (2.94%) Shell Script
14 1 (1.47%) Erlang
14 1 (1.47%) PHP
14 1 (1.47%) PL/SQL
14 1 (1.47%) XAML
Qualifications
1 2 (2.94%) Degree
2 1 (1.47%) Computer Science Degree
2 1 (1.47%) Numerate Degree
Quality Assurance & Compliance
1 2 (2.94%) QA
System Software
1 12 (17.65%) HDFS
2 10 (14.71%) Apache ZooKeeper
3 4 (5.88%) Apache Flume
3 4 (5.88%) Docker
4 2 (2.94%) Firmware
4 2 (2.94%) VirtualBox
5 1 (1.47%) LXC
5 1 (1.47%) vSphere
Systems Management
1 12 (17.65%) Ansible
2 7 (10.29%) Grafana
3 6 (8.82%) Puppet
4 4 (5.88%) Kibana
4 4 (5.88%) Mesos
4 4 (5.88%) Oozie
4 4 (5.88%) Terraform
5 3 (4.41%) logstash
5 3 (4.41%) Nagios
6 2 (2.94%) HAProxy
6 2 (2.94%) Kubernetes
6 2 (2.94%) Opscode Chef
6 2 (2.94%) Packer
7 1 (1.47%) BladeLogic
7 1 (1.47%) CA Service Virtualization
7 1 (1.47%) Graphite
7 1 (1.47%) HP SiteScope
7 1 (1.47%) Prometheus
7 1 (1.47%) ZABBIX
Vendors
1 7 (10.29%) Oracle
2 6 (8.82%) Google
3 5 (7.35%) Apple
3 5 (7.35%) Teradata
4 3 (4.41%) Cloudera
5 2 (2.94%) Hortonworks
5 2 (2.94%) IBM
5 2 (2.94%) Microsoft
5 2 (2.94%) New Relic
6 1 (1.47%) AppDynamics
6 1 (1.47%) CA
6 1 (1.47%) Dynatrace
6 1 (1.47%) F5
6 1 (1.47%) HP
6 1 (1.47%) Netezza
6 1 (1.47%) Neustar
6 1 (1.47%) Perfecto Mobile
6 1 (1.47%) SOASTA, Inc
6 1 (1.47%) Splunk
6 1 (1.47%) VMware