Period
to 17 July 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 17 July 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
17 Jul 2018
Same period 2017 Same period 2016
Rank 175 151 131
Rank change year-on-year -24 -20 +126
Contract jobs citing Apache Cassandra 82 94 117
As % of all contract IT jobs advertised in the City of London 1.16% 1.46% 1.72%
As % of the Database & Business Intelligence category 4.59% 5.64% 6.77%
Number of daily rates quoted 61 85 111
City of London median daily rate £550 £555 £525
Median daily rate % change year-on-year -0.90% +5.71% +5.00%
10th Percentile £463 £501 £419
90th Percentile £713 £675 £606
Central London median daily rate £550 £550 £525
% change year-on-year -0.05% +4.76% +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 1,788 1,667 1,727
As % of all contract IT jobs advertised in the City of London 25.21% 25.80% 25.35%
Number of daily rates quoted 1,437 1,305 1,374
City of London median daily rate £525 £513 £475
Median daily rate % change year-on-year +2.44% +7.89% +5.56%
10th Percentile £363 £349 £313
90th Percentile £688 £675 £638
Central London median daily rate £525 £500 £475
% change year-on-year +5.00% +5.26% +5.56%
Number of hourly rates quoted 12 6 8
City of London median hourly rate £22.00 £21.92 £19.00
Median hourly rate % change year-on-year +0.38% +15.36% -30.91%
10th Percentile £17.57 £20.75 £15.83
90th Percentile £33.00 £27.74 £26.72
Central London median hourly rate £22.50 £21.92 £19.00
% change year-on-year +2.66% +15.36% -22.81%

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 17 July 2018.

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

For the 6 months to 17 July 2018, IT contractor jobs citing Apache Cassandra 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 Apache Cassandra.

1 52 (63.41%) Java
2 44 (53.66%) Amazon AWS
3 38 (46.34%) Python
3 38 (46.34%) NoSQL
4 35 (42.68%) Apache Spark
5 34 (41.46%) Kafka
6 33 (40.24%) Jenkins
7 31 (37.80%) Hadoop
8 28 (34.15%) Big Data
8 28 (34.15%) Docker
9 27 (32.93%) MongoDB
10 26 (31.71%) Git (software)
11 25 (30.49%) Linux
12 24 (29.27%) SSL
13 23 (28.05%) Agile Software Development
13 23 (28.05%) Software Engineering
14 22 (26.83%) HBase
15 20 (24.39%) REST
15 20 (24.39%) Apache Hive
15 20 (24.39%) OAuth
15 20 (24.39%) Kubernetes
15 20 (24.39%) Java 8
16 19 (23.17%) Continuous Integration
16 19 (23.17%) JavaScript
17 18 (21.95%) HTTP
17 18 (21.95%) Spring
17 18 (21.95%) Machine Learning
18 17 (20.73%) Google
18 17 (20.73%) Web Services
19 16 (19.51%) TDD

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 35 (42.68%) Apache Spark
2 13 (15.85%) Apache
3 12 (14.63%) Elasticsearch
4 10 (12.20%) Apache Solr
5 5 (6.10%) Apache Pig
6 1 (1.22%) OpenStack
6 1 (1.22%) Oracle SOA Suite
Applications
1 1 (1.22%) Chatbot
Cloud Services
1 44 (53.66%) Amazon AWS
2 13 (15.85%) Microsoft Azure
3 10 (12.20%) Google Cloud Platform
4 6 (7.32%) Heroku
5 3 (3.66%) Azure Active Directory
6 1 (1.22%) Amazon EC2
6 1 (1.22%) Amazon Kinesis
6 1 (1.22%) OpenShift
Communications & Networking
1 24 (29.27%) SSL
2 18 (21.95%) HTTP
3 15 (18.29%) TCP/IP
4 9 (10.98%) DNS
5 8 (9.76%) Kerberos
6 6 (7.32%) FTP
7 3 (3.66%) X.509
8 1 (1.22%) Internet
Database & Business Intelligence
1 38 (46.34%) NoSQL
2 31 (37.80%) Hadoop
3 28 (34.15%) Big Data
4 27 (32.93%) MongoDB
5 22 (26.83%) HBase
6 20 (24.39%) Apache Hive
7 7 (8.54%) Relational Database
8 6 (7.32%) Sqoop
9 5 (6.10%) Amazon DynamoDB
9 5 (6.10%) Data Warehouse
9 5 (6.10%) RDBMS
10 4 (4.88%) CouchDB
10 4 (4.88%) SQL Server
11 3 (3.66%) Bigtable
11 3 (3.66%) Blockchain
11 3 (3.66%) Impala
11 3 (3.66%) MySQL
11 3 (3.66%) Power BI
11 3 (3.66%) SQL Server Integration Services
12 2 (2.44%) PostgreSQL
Development Applications
1 33 (40.24%) Jenkins
2 26 (31.71%) Git (software)
3 15 (18.29%) Gradle
4 12 (14.63%) JUnit
4 12 (14.63%) Maven
5 10 (12.20%) GitLab
6 9 (10.98%) Mockito
7 6 (7.32%) gulp
8 4 (4.88%) CircleCI
8 4 (4.88%) Travis CI
9 3 (3.66%) Jasmine
9 3 (3.66%) Mocha
9 3 (3.66%) TeamCity
10 2 (2.44%) GoCD
11 1 (1.22%) Karma Test Runner
11 1 (1.22%) Vagrant
11 1 (1.22%) webpack
General
1 11 (13.41%) Banking
1 11 (13.41%) Finance
2 4 (4.88%) Retail
2 4 (4.88%) Retail Banking
3 2 (2.44%) Prime Brokerage
3 2 (2.44%) Publishing
4 1 (1.22%) Front Office
4 1 (1.22%) Investment Banking
4 1 (1.22%) Marketing
Job Titles
1 43 (52.44%) Developer
2 24 (29.27%) Java Developer
3 10 (12.20%) Data Engineer
4 8 (9.76%) Consultant
5 7 (8.54%) DevOps Engineer
5 7 (8.54%) Senior Developer
6 6 (7.32%) Principal Consultant
7 5 (6.10%) Big Data Engineer
7 5 (6.10%) Data Scientist
8 4 (4.88%) Architect
8 4 (4.88%) Hadoop Consultant
8 4 (4.88%) Lead Developer
8 4 (4.88%) Lead Java Developer
8 4 (4.88%) Senior Java Developer
8 4 (4.88%) Technical Developer
8 4 (4.88%) Technical Leader
9 3 (3.66%) Agile Java Developer
9 3 (3.66%) Data Architect
9 3 (3.66%) Data Integration Developer
9 3 (3.66%) Python Developer
Libraries, Frameworks & Software Standards
1 34 (41.46%) Kafka
2 20 (24.39%) OAuth
2 20 (24.39%) REST
3 18 (21.95%) Spring
4 17 (20.73%) Web Services
5 15 (18.29%) Dropwizard
5 15 (18.29%) Guice
5 15 (18.29%) RESTful
6 14 (17.07%) Node.js
7 11 (13.41%) SAML
8 9 (10.98%) AngularJS
8 9 (10.98%) OAuth2
9 7 (8.54%) CSS
9 7 (8.54%) HTML
9 7 (8.54%) Middleware
10 6 (7.32%) Ember.js
10 6 (7.32%) HTML5
10 6 (7.32%) IBM Integration Bus
10 6 (7.32%) Ratpack
10 6 (7.32%) SOAP
Miscellaneous
1 15 (18.29%) Mobile App
2 9 (10.98%) Analytical Skills
3 8 (9.76%) Algorithms
4 3 (3.66%) Computer Science
4 3 (3.66%) Fixed Income
4 3 (3.66%) Reference Data
5 2 (2.44%) Data Centre
5 2 (2.44%) Derivative
5 2 (2.44%) Enterprise Software
5 2 (2.44%) OTC Derivatives
6 1 (1.22%) Fintech
6 1 (1.22%) Foreign Exchange (FX)
6 1 (1.22%) Greenfield Project
6 1 (1.22%) Internet of Things
6 1 (1.22%) Management Information System
Operating Systems
1 25 (30.49%) Linux
2 12 (14.63%) Unix
3 11 (13.41%) Android
3 11 (13.41%) Apple iOS
4 7 (8.54%) Red Hat Enterprise Linux
5 1 (1.22%) CentOS
Processes & Methodologies
1 23 (28.05%) Agile Software Development
1 23 (28.05%) Software Engineering
2 19 (23.17%) Continuous Integration
3 18 (21.95%) Machine Learning
4 16 (19.51%) TDD
5 14 (17.07%) Configuration Management
5 14 (17.07%) Unit Testing
6 13 (15.85%) Microservices
7 12 (14.63%) Continuous Delivery
7 12 (14.63%) Pair Programming
7 12 (14.63%) Test Automation
8 11 (13.41%) Analytics
8 11 (13.41%) API Development
8 11 (13.41%) DevOps
8 11 (13.41%) Identity Access Management
8 11 (13.41%) MapReduce
8 11 (13.41%) Mobile Application Development
8 11 (13.41%) Problem-Solving
9 10 (12.20%) ETL
9 10 (12.20%) Scrum
Programming Languages
1 52 (63.41%) Java
2 38 (46.34%) Python
3 20 (24.39%) Java 8
4 19 (23.17%) JavaScript
5 11 (13.41%) SQL
6 9 (10.98%) Groovy
6 9 (10.98%) Scala
7 8 (9.76%) TypeScript
8 6 (7.32%) ES6
9 5 (6.10%) MATLAB
9 5 (6.10%) R
9 5 (6.10%) Shell Script
10 4 (4.88%) C#
11 3 (3.66%) Bash Shell
11 3 (3.66%) XPath
12 2 (2.44%) C++
12 2 (2.44%) Clojure
12 2 (2.44%) PHP
12 2 (2.44%) PL/SQL
12 2 (2.44%) Ruby
Qualifications
1 3 (3.66%) Degree
1 3 (3.66%) PhD
2 1 (1.22%) Computer Science Degree
2 1 (1.22%) Master's Degree
Quality Assurance & Compliance
1 8 (9.76%) QA
2 3 (3.66%) Data Quality
3 2 (2.44%) GCP
4 1 (1.22%) MiFID
System Software
1 28 (34.15%) Docker
2 14 (17.07%) Apache Flume
3 13 (15.85%) HDFS
4 10 (12.20%) Active Directory
5 9 (10.98%) Apache ZooKeeper
6 3 (3.66%) VirtualBox
6 3 (3.66%) VMware Infrastructure
Systems Management
1 20 (24.39%) Kubernetes
2 12 (14.63%) Hadoop YARN
3 11 (13.41%) Prometheus
4 9 (10.98%) Oozie
5 7 (8.54%) Ambari
5 7 (8.54%) Apache Slider
6 6 (7.32%) Docker Swarm
7 4 (4.88%) Ansible
8 3 (3.66%) Single Sign-On
9 2 (2.44%) Puppet
9 2 (2.44%) Terraform
Vendors
1 17 (20.73%) Google
2 16 (19.51%) Hortonworks
3 11 (13.41%) Apigee
4 9 (10.98%) Cloudera
5 6 (7.32%) IBM
6 5 (6.10%) MapR
7 4 (4.88%) Oracle
8 3 (3.66%) Microsoft
8 3 (3.66%) VMware
9 2 (2.44%) Sybase
10 1 (1.22%) Red Hat