The following table provides summary statistics for contract job vacancies advertised in 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 3 months to 25 March 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.

3 months to
25 Mar 2017
Same period 2016 Same period 2015
Apache Cassandra
England / London
Rank 207 179 332
Rank change year-on-year -28 +153  
Contract jobs citing Apache Cassandra 216 308 88
As % of all contract IT jobs advertised in London 1.11% 1.39% 0.42%
As % of the Database & Business Intelligence category 4.44% 5.79% 1.74%
Number of daily rates quoted 178 269 72
Median daily rate £550 £525 £500
Median daily rate % change year-on-year +4.76% +5.00%  
90% offered a daily rate of more than £438 £450 £375
10% offered a daily rate of more than £708 £650 £600
UK excluding London median daily rate £488 £550 £600
% change year-on-year -11.36% -8.33%  
Number of hourly rates quoted 0 2 1
Median hourly rate - £50.00 £92.50
Median hourly rate % change year-on-year - -45.94%  
UK excluding London median hourly rate - - -

Apache Cassandra is in the database and business intelligence skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for database and business intelligence skills.

Contract Database & Business Intelligence Skills
London
Contract job vacancies with a requirement for database and business intelligence skills 4865 5318 5065
As % of all contract IT job vacancies advertised in London 24.99% 24.03% 24.06%
Number of daily rates quoted 3516 3811 3505
Median daily rate £490 £475 £450
Median daily rate % change year-on-year +3.15% +5.55%  
90% offered a daily rate of more than £350 £325 £313
10% offered a daily rate of more than £625 £620 £588
UK excluding London median daily rate £400 £388 £375
% change year-on-year +3.22% +3.33%  
Number of hourly rates quoted 18 37 40
Median hourly rate £30.00 £43.00 £22.83
Median hourly rate % change year-on-year -30.23% +88.34%  
90% offered a hourly rate of more than £17.80 £18.10 £14.70
10% offered a hourly rate of more than £109.50 £50.00 £55.00
UK excluding London median hourly rate £31.00 £32.50 £32.50
% change year-on-year -4.61% -  

Apache Cassandra
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing Apache Cassandra as a proportion of all contract or permanent IT jobs with a match in the Database & Business Intelligence category.

Job vacancy trend for Apache Cassandra in London

Apache Cassandra
Contractor Daily Rate Trend in London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Apache Cassandra in London.

Contractor daily rate trend for Apache Cassandra in London

Apache Cassandra
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing Apache Cassandra in London over the 3 months to 25 March 2017.

Contractor daily rate histogram for Apache Cassandra in London

Apache Cassandra
Contractor Hourly Rate Trend in London

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing Apache Cassandra in London.

Contractor hourly rate trend for Apache Cassandra in London

Apache Cassandra
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Apache Cassandra within the London region over the 3 months to 25 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London -42 41 £550 +4.76% 15
Canary Wharf -3 2 - -
Hayes - 1 £470 -
Docklands, London - 1 £650 -
Heathrow - 1 £425 -
Apache Cassandra
England

Apache Cassandra
Top 30 Related IT Skills in London

For the 6 months to 25 March 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 London region with a requirement for Apache Cassandra.

1 279 (66.27%) Java
2 220 (52.26%) NoSQL
3 207 (49.17%) Big Data
4 197 (46.79%) Agile Software Development
5 177 (42.04%) Apache Spark
6 164 (38.95%) Hadoop
7 154 (36.58%) MongoDB
8 153 (36.34%) Kafka
9 151 (35.87%) Scala
10 136 (32.30%) Python
11 134 (31.83%) TDD
12 114 (27.08%) DevOps
13 112 (26.60%) Microservices
14 111 (26.37%) Linux
15 94 (22.33%) Finance
16 93 (22.09%) Apache Hive
16 93 (22.09%) Docker
17 92 (21.85%) Open Source
18 91 (21.62%) HBase
19 87 (20.67%) BDD
20 86 (20.43%) REST
21 85 (20.19%) JavaScript
22 84 (19.95%) Spring
23 80 (19.00%) Scrum
24 79 (18.76%) Amazon AWS
25 77 (18.29%) Banking
26 73 (17.34%) Analytics
27 70 (16.63%) SQL
28 68 (16.15%) Oracle
29 66 (15.68%) Apache Pig

Apache Cassandra
Top Related IT Skills in 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
1 177 (42.04%) Apache Spark
2 66 (15.68%) Apache Pig
3 59 (14.01%) Apache
4 46 (10.93%) Elasticsearch
5 30 (7.13%) Apache Solr
6 11 (2.61%) Confluence
6 11 (2.61%) nginx
7 10 (2.38%) JBoss
8 9 (2.14%) Tomcat
9 8 (1.90%) OpenStack
10 6 (1.43%) SAS
11 5 (1.19%) Jetty
11 5 (1.19%) Oracle SOA Suite
12 4 (0.95%) WebSphere
13 3 (0.71%) Cloud Foundry
13 3 (0.71%) IIS
13 3 (0.71%) Jupyter
13 3 (0.71%) WebLogic
14 2 (0.48%) Drupal
14 2 (0.48%) Oracle Coherence
Applications
1 5 (1.19%) MS Excel
2 4 (0.95%) SPSS
3 3 (0.71%) GNU Octave
3 3 (0.71%) Weka
Business Applications
1 1 (0.24%) SAP Oil and Gas
Cloud Services
1 79 (18.76%) Amazon AWS
2 31 (7.36%) Amazon EC2
3 20 (4.75%) Microsoft Azure
4 17 (4.04%) Amazon S3
5 15 (3.56%) Twilio
6 12 (2.85%) Amazon SQS
7 11 (2.61%) GitHub
7 11 (2.61%) PaaS
8 9 (2.14%) Amazon EMR
8 9 (2.14%) Cloud Computing
9 6 (1.43%) AWS CloudFormation
10 5 (1.19%) Slack
11 3 (0.71%) Akamai
12 2 (0.48%) AWS Elastic Beanstalk
12 2 (0.48%) Google Cloud Platform
12 2 (0.48%) IaaS
12 2 (0.48%) Loggly
12 2 (0.48%) Office 365
12 2 (0.48%) OpenShift
12 2 (0.48%) Virtual Private Cloud
Communications & Networking
1 13 (3.09%) HTTP
2 8 (1.90%) Firewall
3 5 (1.19%) DNS
3 5 (1.19%) Kerberos
3 5 (1.19%) TCP/IP
4 4 (0.95%) Network Security
4 4 (0.95%) Skype
5 2 (0.48%) LDAP
5 2 (0.48%) SNMP
6 1 (0.24%) F5 BIG-IP GTM
6 1 (0.24%) F5 BIG-IP LTM
6 1 (0.24%) Internet
6 1 (0.24%) LAN
6 1 (0.24%) MQTT
6 1 (0.24%) NAS
6 1 (0.24%) WAN
6 1 (0.24%) ZigBee
Database & Business Intelligence
1 220 (52.26%) NoSQL
2 207 (49.17%) Big Data
3 164 (38.95%) Hadoop
4 154 (36.58%) MongoDB
5 93 (22.09%) Apache Hive
6 91 (21.62%) HBase
7 64 (15.20%) Relational Database
8 61 (14.49%) SQL Server
9 60 (14.25%) MySQL
10 49 (11.64%) Data Warehouse
11 35 (8.31%) RDBMS
12 34 (8.08%) Neo4j
12 34 (8.08%) PostgreSQL
13 26 (6.18%) Sqoop
14 20 (4.75%) Data Mining
14 20 (4.75%) Impala
15 19 (4.51%) Data Lake
15 19 (4.51%) Riak
16 13 (3.09%) MarkLogic
17 12 (2.85%) RethinkDB
Development Applications
1 61 (14.49%) Jenkins
2 44 (10.45%) Git (software)
3 32 (7.60%) Maven
4 16 (3.80%) JIRA
4 16 (3.80%) Subversion
5 13 (3.09%) JUnit
6 11 (2.61%) Cucumber
7 10 (2.38%) Gradle
8 9 (2.14%) Atlassian Bamboo
8 9 (2.14%) Talend Open Studio
9 8 (1.90%) Bitbucket
9 8 (1.90%) TeamCity
10 7 (1.66%) Jasmine
10 7 (1.66%) Selenium
11 6 (1.43%) GoCD
11 6 (1.43%) Team Foundation Server
11 6 (1.43%) Visual Studio
12 5 (1.19%) Karma Test Runner
12 5 (1.19%) Mockito
13 4 (0.95%) Artifactory
General
1 94 (22.33%) Finance
2 77 (18.29%) Banking
3 25 (5.94%) Front Office
4 19 (4.51%) Investment Banking
5 12 (2.85%) Games
6 9 (2.14%) Retail
7 5 (1.19%) Law
8 4 (0.95%) Publishing
9 2 (0.48%) Financial Institution
9 2 (0.48%) Marketing
10 1 (0.24%) Billing
10 1 (0.24%) Electronics
10 1 (0.24%) Manufacturing
10 1 (0.24%) Retail Banking
10 1 (0.24%) Telecoms
Job Titles
1 236 (56.06%) Developer
2 140 (33.25%) Java Developer
3 58 (13.78%) Architect
4 49 (11.64%) Senior Developer
5 43 (10.21%) Data Engineer
6 41 (9.74%) Scala Developer
7 39 (9.26%) Big Data Developer
8 38 (9.03%) Big Data Engineer
9 32 (7.60%) Senior Java Developer
10 27 (6.41%) DevOps Engineer
11 25 (5.94%) Agile Developer
12 24 (5.70%) Agile Java Developer
12 24 (5.70%) Data Architect
13 20 (4.75%) AWS Engineer
14 19 (4.51%) AWS DevOps
15 16 (3.80%) Apache Spark Developer
15 16 (3.80%) Big Data Architect
15 16 (3.80%) Cassandra Developer
15 16 (3.80%) Python Developer
16 15 (3.56%) Data Scientist
Libraries, Frameworks & Software Standards
1 153 (36.34%) Kafka
2 86 (20.43%) REST
3 84 (19.95%) Spring
4 61 (14.49%) HTML
5 53 (12.59%) AngularJS
6 48 (11.40%) Akka
7 45 (10.69%) HTML5
8 44 (10.45%) Web Services
9 42 (9.98%) CSS
10 38 (9.03%) Node.js
11 34 (8.08%) JSON
12 24 (5.70%) Spring Boot
13 23 (5.46%) Hibernate
14 19 (4.51%) Apache Camel
14 19 (4.51%) CSS3
14 19 (4.51%) Django
14 19 (4.51%) SOAP
15 18 (4.28%) React
15 18 (4.28%) RESTful
16 17 (4.04%) .NET
Miscellaneous
1 39 (9.26%) Algorithms
2 29 (6.89%) Analytical Skills
3 16 (3.80%) Data Structures
4 14 (3.33%) Computer Science
4 14 (3.33%) Foreign Exchange (FX)
5 12 (2.85%) Derivative
5 12 (2.85%) User Experience
6 11 (2.61%) Client/Server
6 11 (2.61%) Equities
6 11 (2.61%) Replication
7 9 (2.14%) Fintech
8 8 (1.90%) Data Centre
8 8 (1.90%) Market Risk
9 7 (1.66%) Fixed Income
9 7 (1.66%) Mobile Games
9 7 (1.66%) Online Games
10 5 (1.19%) Enterprise Software
10 5 (1.19%) EPoS
10 5 (1.19%) Management Information System
10 5 (1.19%) Mobile App
Operating Systems
1 111 (26.37%) Linux
2 58 (13.78%) Unix
3 20 (4.75%) CentOS
4 19 (4.51%) Windows
5 18 (4.28%) Android
5 18 (4.28%) Apple iOS
6 11 (2.61%) Red Hat Enterprise Linux
7 7 (1.66%) Ubuntu
8 6 (1.43%) Mac OS X
9 3 (0.71%) Debian
10 2 (0.48%) CoreOS
10 2 (0.48%) Solaris
Processes & Methodologies
1 197 (46.79%) Agile Software Development
2 134 (31.83%) TDD
3 114 (27.08%) DevOps
4 112 (26.60%) Microservices
5 92 (21.85%) Open Source
6 87 (20.67%) BDD
7 80 (19.00%) Scrum
8 73 (17.34%) Analytics
9 63 (14.96%) Software Engineering
10 55 (13.06%) Continuous Integration
11 50 (11.88%) Machine Learning
12 46 (10.93%) OO
13 42 (9.98%) MapReduce
14 41 (9.74%) Kanban
15 31 (7.36%) Data Modelling
16 30 (7.13%) Mentoring
17 28 (6.65%) Configuration Management
17 28 (6.65%) Mathematics
18 27 (6.41%) Visualisation
19 25 (5.94%) ETL
Programming Languages
1 279 (66.27%) Java
2 151 (35.87%) Scala
3 136 (32.30%) Python
4 85 (20.19%) JavaScript
5 70 (16.63%) SQL
6 52 (12.35%) R
7 27 (6.41%) C#
8 25 (5.94%) Perl
9 23 (5.46%) Ruby
10 22 (5.23%) Bash Shell
11 13 (3.09%) CQL
12 11 (2.61%) Groovy
12 11 (2.61%) MATLAB
13 10 (2.38%) C++
13 10 (2.38%) Clojure
13 10 (2.38%) Haskell
14 9 (2.14%) PHP
15 8 (1.90%) Shell Script
16 4 (0.95%) Go
16 4 (0.95%) Kotlin
Qualifications
1 32 (7.60%) Degree
2 10 (2.38%) PhD
3 3 (0.71%) Security Cleared
4 2 (0.48%) DV Cleared
Quality Assurance & Compliance
1 15 (3.56%) QA
2 3 (0.71%) Data Quality
3 1 (0.24%) SLA
System Software
1 93 (22.09%) Docker
2 33 (7.84%) Apache Flume
2 33 (7.84%) HDFS
3 11 (2.61%) Apache ZooKeeper
4 3 (0.71%) Xen
5 2 (0.48%) LXC
5 2 (0.48%) Oracle RAC
5 2 (0.48%) VMware Infrastructure
5 2 (0.48%) vSphere
6 1 (0.24%) Active Directory
6 1 (0.24%) Ceph
6 1 (0.24%) Firmware
6 1 (0.24%) Postfix
Systems Management
1 53 (12.59%) Puppet
2 45 (10.69%) Ansible
3 38 (9.03%) Opscode Chef
4 35 (8.31%) Hadoop YARN
5 25 (5.94%) Oozie
6 15 (3.56%) Kubernetes
7 9 (2.14%) Terraform
8 8 (1.90%) Nagios
9 7 (1.66%) Ambari
10 6 (1.43%) Mesos
11 5 (1.19%) Kibana
11 5 (1.19%) logstash
12 4 (0.95%) FreeIPA
12 4 (0.95%) Marathon
13 2 (0.48%) Docker Swarm
13 2 (0.48%) Icinga
14 1 (0.24%) Rancher
14 1 (0.24%) rkt
14 1 (0.24%) Salt
14 1 (0.24%) ZABBIX
Vendors
1 68 (16.15%) Oracle
2 25 (5.94%) Hortonworks
3 22 (5.23%) Red Hat
4 19 (4.51%) Tableau
5 16 (3.80%) Sybase
6 15 (3.56%) SAP
7 14 (3.33%) Cloudera
8 9 (2.14%) hybris
8 9 (2.14%) Talend
9 8 (1.90%) Apigee
9 8 (1.90%) Cognos
9 8 (1.90%) Microsoft
10 7 (1.66%) Informatica
10 7 (1.66%) Vertica
11 6 (1.43%) Splunk
12 4 (0.95%) Cisco
12 4 (0.95%) IBM
12 4 (0.95%) MapR
12 4 (0.95%) New Relic
13 3 (0.71%) Dell
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Rate: £400 - £500 per day
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Rate: £600 - £700 per day + negotiable
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Rate: Up to £500 per day + Bonus & Benefits
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Twickenham, Middlesex
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Rate: £450.00 - £500.00 per day
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Spectrum IT
Rate: £400 - £425 per day
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