Apache Cassandra Contracts in London

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 23 June 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 England / London
Location	3 months to 23 Jun 2017	Same period 2016	Same period 2015
Rank	222	234	309
Rank change year-on-year	+12	+75
Contract jobs citing Apache Cassandra	223	205	115
As % of all contract IT jobs advertised in London	1.08%	0.95%	0.49%
As % of the Database & Business Intelligence category	4.53%	4.15%	2.06%
Number of daily rates quoted	176	170	87
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	£450	£425	£383
10% offered a daily rate of more than	£650	£638	£600
UK excluding London median daily rate	£475	£425	£525
% change year-on-year	+11.76%	-19.04%
Number of hourly rates quoted	0	0	0
Median hourly rate	-	-	-
UK excluding London median hourly rate	-	£55.00	-

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	4922	4937	5577
As % of all contract IT job vacancies advertised in London	23.80%	22.82%	23.80%
Number of daily rates quoted	3577	3645	3918
Median daily rate	£500	£475	£450
Median daily rate % change year-on-year	+5.26%	+5.55%
90% offered a daily rate of more than	£365	£335	£300
10% offered a daily rate of more than	£625	£625	£600
UK excluding London median daily rate	£400	£388	£350
% change year-on-year	+3.22%	+10.71%
Number of hourly rates quoted	30	21	51
Median hourly rate	£24.66	£35.00	£27.78
Median hourly rate % change year-on-year	-29.54%	+25.98%
90% offered a hourly rate of more than	£21.33	£16.75	£15.58
10% offered a hourly rate of more than	£43.43	£100.00	£55.00
UK excluding London median hourly rate	£38.00	£30.35	£26.00
% change year-on-year	+25.19%	+16.74%

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 23 June 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 contractor hourly rates quoted in IT 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 23 June 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	+8	52	£575	+8.23%	22
Twickenham	-	2	£475	-
Canary Wharf	+1	1	£750	-
Heathrow	-	1	£425	-
Docklands, London	-	1	£471	-
Apache Cassandra England

Apache Cassandra
Top 30 Co-occurring IT Skills in London

For the 6 months to 23 June 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	300 (68.81%)	Java
2	214 (49.08%)	Agile Software Development
3	209 (47.94%)	NoSQL
4	184 (42.20%)	Big Data
5	169 (38.76%)	Hadoop
6	166 (38.07%)	Apache Spark
7	160 (36.70%)	Kafka
8	144 (33.03%)	Scala
9	133 (30.50%)	MongoDB
10	131 (30.05%)	TDD
11	127 (29.13%)	DevOps
12	125 (28.67%)	Python
13	118 (27.06%)	Linux
13	118 (27.06%)	Microservices
14	104 (23.85%)	Amazon AWS

15	100 (22.94%)	Docker
16	88 (20.18%)	SQL
17	83 (19.04%)	Elasticsearch
18	82 (18.81%)	Analytics
18	82 (18.81%)	Spring
19	79 (18.12%)	Finance
19	79 (18.12%)	BDD
20	78 (17.89%)	Jenkins
21	75 (17.20%)	HBase
22	73 (16.74%)	Oracle
23	70 (16.06%)	Unix
23	70 (16.06%)	Apache
23	70 (16.06%)	Apache Hive
24	69 (15.83%)	Open Source
24	69 (15.83%)	Scrum

Apache Cassandra
Co-occurring 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
Applications
Business Applications
Cloud Services
Communications & Networking
Database & Business Intelligence
Development Applications
General
Job Titles
Libraries, Frameworks & Software Standards
Miscellaneous
Operating Systems
Processes & Methodologies
Programming Languages
Qualifications
Quality Assurance & Compliance
System Software
Systems Management
Vendors

Application Platforms
1	166 (38.07%)	Apache Spark
2	83 (19.04%)	Elasticsearch
3	70 (16.06%)	Apache
4	41 (9.40%)	Apache Pig
5	22 (5.05%)	Apache Solr
6	13 (2.98%)	Tomcat
7	12 (2.75%)	Confluence
8	8 (1.83%)	nginx
8	8 (1.83%)	Oracle Coherence
9	5 (1.15%)	DataSynapse
9	5 (1.15%)	JBoss
9	5 (1.15%)	OpenStack
10	4 (0.92%)	Oracle SOA Suite
11	3 (0.69%)	SAS
12	2 (0.46%)	CMS
12	2 (0.46%)	Drupal
12	2 (0.46%)	GemFire
12	2 (0.46%)	GlassFish
12	2 (0.46%)	Jetty
12	2 (0.46%)	WebLogic

Applications
1	3 (0.69%)	GNU Octave
1	3 (0.69%)	Weka
2	2 (0.46%)	SPSS

Business Applications
1	2 (0.46%)	Siebel CRM
2	1 (0.23%)	BASE24

Cloud Services
1	104 (23.85%)	Amazon AWS
2	41 (9.40%)	Amazon EC2
3	25 (5.73%)	Twilio
4	19 (4.36%)	Amazon SQS
5	18 (4.13%)	Amazon S3
5	18 (4.13%)	Microsoft Azure
6	13 (2.98%)	Amazon EMR
7	7 (1.61%)	PaaS
8	6 (1.38%)	Akamai
8	6 (1.38%)	Cloud Computing
9	5 (1.15%)	Google Cloud Platform
9	5 (1.15%)	OpenShift
9	5 (1.15%)	Slack
10	4 (0.92%)	GitHub
11	3 (0.69%)	AWS CloudFormation
12	2 (0.46%)	Amazon Kinesis
12	2 (0.46%)	AWS Elastic Beanstalk
12	2 (0.46%)	Loggly
12	2 (0.46%)	Virtual Private Cloud
13	1 (0.23%)	IaaS

Communications & Networking
1	23 (5.28%)	HTTP
2	12 (2.75%)	DNS
3	11 (2.52%)	Firewall
4	8 (1.83%)	LDAP
5	7 (1.61%)	TCP/IP
6	5 (1.15%)	Kerberos
7	4 (0.92%)	Skype
7	4 (0.92%)	tcpdump
7	4 (0.92%)	VPN
7	4 (0.92%)	Wireshark
8	3 (0.69%)	LAN
8	3 (0.69%)	WAN
9	2 (0.46%)	Internet
10	1 (0.23%)	F5 BIG-IP GTM
10	1 (0.23%)	F5 BIG-IP LTM
10	1 (0.23%)	HTTPS
10	1 (0.23%)	NAS
10	1 (0.23%)	Network Security
10	1 (0.23%)	SSL
10	1 (0.23%)	ZigBee

Database & Business Intelligence
1	209 (47.94%)	NoSQL
2	184 (42.20%)	Big Data
3	169 (38.76%)	Hadoop
4	133 (30.50%)	MongoDB
5	75 (17.20%)	HBase
6	70 (16.06%)	Apache Hive
7	52 (11.93%)	MySQL
8	48 (11.01%)	Relational Database
8	48 (11.01%)	SQL Server
9	32 (7.34%)	Data Warehouse
10	30 (6.88%)	RDBMS
11	22 (5.05%)	PostgreSQL
11	22 (5.05%)	Sqoop
12	21 (4.82%)	Amazon DynamoDB
13	19 (4.36%)	Neo4j
14	14 (3.21%)	CouchDB
15	12 (2.75%)	Data Mining
15	12 (2.75%)	RethinkDB
16	11 (2.52%)	Apache Zeppelin
16	11 (2.52%)	Flink

Development Applications
1	78 (17.89%)	Jenkins
2	66 (15.14%)	Git (software)
3	47 (10.78%)	Maven
4	27 (6.19%)	JIRA
5	16 (3.67%)	JUnit
6	15 (3.44%)	Bitbucket
6	15 (3.44%)	Subversion
7	14 (3.21%)	Atlassian Bamboo
8	11 (2.52%)	Gradle
8	11 (2.52%)	Mockito
8	11 (2.52%)	TeamCity
9	10 (2.29%)	Jasmine
10	9 (2.06%)	Hudson
10	9 (2.06%)	JMeter
11	8 (1.83%)	Cucumber
11	8 (1.83%)	LoadRunner
12	7 (1.61%)	Ant
12	7 (1.61%)	Fiddler
12	7 (1.61%)	Log4j
12	7 (1.61%)	YourKit

General
1	79 (18.12%)	Finance
2	49 (11.24%)	Banking
3	13 (2.98%)	Games
4	12 (2.75%)	Front Office
5	9 (2.06%)	Investment Banking
6	5 (1.15%)	Advertising
6	5 (1.15%)	Retail
7	4 (0.92%)	Law
8	3 (0.69%)	Telecoms
9	2 (0.46%)	Publishing
10	1 (0.23%)	Legal

Job Titles
1	253 (58.03%)	Developer
2	151 (34.63%)	Java Developer
3	52 (11.93%)	Scala Developer
4	49 (11.24%)	Big Data Developer
5	48 (11.01%)	Senior Developer
6	45 (10.32%)	Architect
6	45 (10.32%)	Data Engineer
7	36 (8.26%)	AWS Developer
8	35 (8.03%)	Big Data Engineer
8	35 (8.03%)	DevOps Engineer
9	28 (6.42%)	AWS DevOps
9	28 (6.42%)	Cassandra Developer
10	27 (6.19%)	Senior Java Developer
11	26 (5.96%)	Hadoop Developer
12	24 (5.50%)	AWS Engineer
13	21 (4.82%)	Agile Developer
13	21 (4.82%)	Java Hadoop Developer
14	19 (4.36%)	Agile Java Developer
14	19 (4.36%)	Python Developer
15	18 (4.13%)	Apache Spark Developer

Libraries, Frameworks & Software Standards
1	160 (36.70%)	Kafka
2	82 (18.81%)	Spring
3	58 (13.30%)	REST
3	58 (13.30%)	Web Services
4	45 (10.32%)	Akka
5	41 (9.40%)	Spring Boot
6	40 (9.17%)	Node.js
7	36 (8.26%)	RESTful
8	35 (8.03%)	HTML
9	27 (6.19%)	JSON
10	26 (5.96%)	Swagger
11	24 (5.50%)	Elastic Stack
12	21 (4.82%)	CSS
13	20 (4.59%)	Ajax
13	20 (4.59%)	AngularJS
13	20 (4.59%)	HTML5
14	18 (4.13%)	Play Framework
15	17 (3.90%)	React
15	17 (3.90%)	Spark Streaming
15	17 (3.90%)	XML

Miscellaneous
1	54 (12.39%)	Greenfield Project
2	33 (7.57%)	Algorithms
3	23 (5.28%)	Client/Server
4	22 (5.05%)	Analytical Skills
5	18 (4.13%)	Computer Science
6	17 (3.90%)	User Experience
7	15 (3.44%)	Fintech
8	13 (2.98%)	Fixed Income
9	12 (2.75%)	Grid Computing
10	10 (2.29%)	Derivative
11	9 (2.06%)	Foreign Exchange (FX)
12	8 (1.83%)	Data Structures
12	8 (1.83%)	Enterprise Software
13	7 (1.61%)	Mobile App
14	6 (1.38%)	Credit Risk
14	6 (1.38%)	Equities
14	6 (1.38%)	Management Information System
14	6 (1.38%)	Public Cloud
14	6 (1.38%)	Replication
14	6 (1.38%)	Tandem

Operating Systems
1	118 (27.06%)	Linux
2	70 (16.06%)	Unix
3	26 (5.96%)	Windows
4	23 (5.28%)	CentOS
5	11 (2.52%)	Red Hat Enterprise Linux
6	8 (1.83%)	Android
6	8 (1.83%)	Apple iOS
6	8 (1.83%)	Mac OS X
7	7 (1.61%)	Ubuntu
7	7 (1.61%)	Windows Server
8	1 (0.23%)	CoreOS
8	1 (0.23%)	Solaris

Processes & Methodologies
1	214 (49.08%)	Agile Software Development
2	131 (30.05%)	TDD
3	127 (29.13%)	DevOps
4	118 (27.06%)	Microservices
5	82 (18.81%)	Analytics
6	79 (18.12%)	BDD
7	69 (15.83%)	Open Source
7	69 (15.83%)	Scrum
7	69 (15.83%)	Software Engineering
8	56 (12.84%)	Continuous Integration
9	52 (11.93%)	Machine Learning
10	42 (9.63%)	OO
11	41 (9.40%)	Continuous Delivery
12	35 (8.03%)	Mentoring
13	32 (7.34%)	MapReduce
14	30 (6.88%)	Kanban
15	24 (5.50%)	Data Modelling
15	24 (5.50%)	E-Commerce
15	24 (5.50%)	Multithreading
16	23 (5.28%)	Data Analytics

Programming Languages
1	300 (68.81%)	Java
2	144 (33.03%)	Scala
3	125 (28.67%)	Python
4	88 (20.18%)	SQL
5	62 (14.22%)	JavaScript
6	31 (7.11%)	R
7	30 (6.88%)	Bash Shell
8	21 (4.82%)	C#
9	18 (4.13%)	Ruby
10	17 (3.90%)	Perl
11	14 (3.21%)	Groovy
12	13 (2.98%)	CQL
12	13 (2.98%)	Shell Script
13	12 (2.75%)	C++
14	9 (2.06%)	PL/SQL
15	7 (1.61%)	Kotlin
16	6 (1.38%)	Go
16	6 (1.38%)	Objective-C
17	5 (1.15%)	Clojure
17	5 (1.15%)	SPARQL

Qualifications
1	34 (7.80%)	Degree
2	17 (3.90%)	Master's Degree
3	8 (1.83%)	Numerate Degree
4	7 (1.61%)	Computer Science Degree
5	6 (1.38%)	PhD
6	3 (0.69%)	CCNA
6	3 (0.69%)	CCSA
6	3 (0.69%)	Cisco Certification
6	3 (0.69%)	CISM
6	3 (0.69%)	CISSP
6	3 (0.69%)	JNCIA
7	1 (0.23%)	Security Cleared

Quality Assurance & Compliance
1	14 (3.21%)	QA
2	3 (0.69%)	MiFID
2	3 (0.69%)	SLA
3	1 (0.23%)	COBIT
3	1 (0.23%)	Data Quality
3	1 (0.23%)	ISO/IEC 27001

System Software
1	100 (22.94%)	Docker
2	31 (7.11%)	HDFS
3	22 (5.05%)	Apache Flume
4	18 (4.13%)	Apache ZooKeeper
5	7 (1.61%)	Platform Symphony
6	4 (0.92%)	LXC
7	3 (0.69%)	Oracle RAC
7	3 (0.69%)	VMware Infrastructure
7	3 (0.69%)	vSphere
8	1 (0.23%)	Firmware
8	1 (0.23%)	KVM
8	1 (0.23%)	Postfix
8	1 (0.23%)	Xen

Systems Management
1	54 (12.39%)	Puppet
2	48 (11.01%)	Opscode Chef
3	43 (9.86%)	Ansible
4	32 (7.34%)	Kubernetes
5	24 (5.50%)	Hadoop YARN
6	20 (4.59%)	Oozie
7	18 (4.13%)	Nagios
8	16 (3.67%)	Terraform
9	15 (3.44%)	Grafana
9	15 (3.44%)	Kibana
10	14 (3.21%)	logstash
11	11 (2.52%)	Graphite
11	11 (2.52%)	Mesos
11	11 (2.52%)	ZABBIX
12	8 (1.83%)	Marathon
13	7 (1.61%)	FreeIPA
13	7 (1.61%)	HP SiteScope
14	6 (1.38%)	Docker Swarm
14	6 (1.38%)	Icinga
15	4 (0.92%)	Prometheus

Vendors
1	73 (16.74%)	Oracle
2	23 (5.28%)	Red Hat
2	23 (5.28%)	Splunk
3	17 (3.90%)	Sybase
4	14 (3.21%)	Cloudera
5	11 (2.52%)	Dynatrace
6	10 (2.29%)	Hortonworks
7	8 (1.83%)	AppDynamics
7	8 (1.83%)	Microsoft
7	8 (1.83%)	VMware
8	7 (1.61%)	HP
8	7 (1.61%)	SAP
9	5 (1.15%)	Apple
9	5 (1.15%)	Cognos
9	5 (1.15%)	IBM
9	5 (1.15%)	Tableau
9	5 (1.15%)	Vertica
10	4 (0.92%)	F5
10	4 (0.92%)	Google
10	4 (0.92%)	Informatica