Period
to 18 November 2017

The following table provides summary statistics for contract job vacancies advertised in Hertfordshire 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
East of England > Hertfordshire
6 months to
18 Nov 2017
Same period 2016 Same period 2015
Rank 92 84 -
Rank change year-on-year -8 - -
Contract jobs citing Apache Cassandra 7 9 0
As % of all contract IT jobs advertised in Hertfordshire 0.45% 0.65% -
As % of the Database & Business Intelligence category 2.32% 2.98% -
Number of daily rates quoted 4 9 0
Hertfordshire median daily rate £506 £525 -
Median daily rate % change year-on-year -3.57% - -
East of England median daily rate £550 £525 £458
% change year-on-year +4.76% +14.75% -
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England 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 Hertfordshire with a requirement for database or business intelligence skills.

All Database and Business Intelligence Skills
Hertfordshire
Contract vacancies with a requirement for database or business intelligence skills 302 302 332
As % of all contract IT jobs advertised in Hertfordshire 19.30% 21.71% 20.42%
Number of daily rates quoted 169 179 166
Hertfordshire median daily rate £425 £400 £375
Median daily rate % change year-on-year +6.25% +6.67% +5.63%
10th Percentile £311 £263 £245
90th Percentile £576 £528 £531
East of England median daily rate £400 £375 £375
% change year-on-year +6.67% - -
Number of hourly rates quoted 4 2 7
Hertfordshire median hourly rate £18.25 £28.54 £15.00
Median hourly rate % change year-on-year -36.05% +90.27% -25.00%
10th Percentile £15.38 £14.96 £11.25
90th Percentile £19.00 £41.75 £48.00
East of England median hourly rate £29.50 £37.50 £32.00
% change year-on-year -21.33% +17.19% +12.28%

Apache Cassandra
Job Vacancy Trend in Hertfordshire

Job postings citing Apache Cassandra as a percentage of all IT jobs advertised in Hertfordshire.

Job vacancy trend for Apache Cassandra in Hertfordshire

Apache Cassandra
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for Apache Cassandra in Hertfordshire

Apache Cassandra
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing Apache Cassandra in Hertfordshire over the 6 months to 18 November 2017.

Contractor daily rate histogram for Apache Cassandra in Hertfordshire

Apache Cassandra
Contract Job Locations in Hertfordshire

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 Hertfordshire region over the 6 months to 18 November 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Welwyn Garden City +4 3 - -
Hatfield -6 2 £475 -9.52% 3
St Albans - 1 £463 -
Apache Cassandra
East of England

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 Hertfordshire region with a requirement for Apache Cassandra.

1 6 (85.71%) Agile Software Development
1 6 (85.71%) TDD
2 5 (71.43%) NoSQL
3 4 (57.14%) BDD
3 4 (57.14%) Continuous Integration
3 4 (57.14%) SQL
4 3 (42.86%) Java
4 3 (42.86%) Web Services
4 3 (42.86%) Data Modelling
4 3 (42.86%) RESTful
4 3 (42.86%) Amazon AWS
4 3 (42.86%) Big Data
4 3 (42.86%) Analytics
4 3 (42.86%) Data Analytics
4 3 (42.86%) Microservices
4 3 (42.86%) Apache Spark
4 3 (42.86%) Loose Coupling
4 3 (42.86%) Spark Streaming
4 3 (42.86%) Spring Cloud
4 3 (42.86%) QA
5 2 (28.57%) DevOps
5 2 (28.57%) Akka
5 2 (28.57%) Open Source
5 2 (28.57%) Scala
5 2 (28.57%) Spring
5 2 (28.57%) PostgreSQL
5 2 (28.57%) Linux
5 2 (28.57%) OO
6 1 (14.29%) Python
6 1 (14.29%) Unix

Apache Cassandra
Co-occurring IT Skills in Hertfordshire 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 3 (42.86%) Apache Spark
2 1 (14.29%) Cloud Foundry
2 1 (14.29%) OpenStack
Cloud Services
1 3 (42.86%) Amazon AWS
2 1 (14.29%) Amazon EC2
2 1 (14.29%) Microsoft Azure
Database & Business Intelligence
1 5 (71.43%) NoSQL
2 3 (42.86%) Big Data
3 2 (28.57%) PostgreSQL
4 1 (14.29%) MySQL
Development Applications
1 1 (14.29%) Jenkins
General
1 1 (14.29%) Retail
1 1 (14.29%) Telecoms
Job Titles
1 6 (85.71%) Developer
2 3 (42.86%) Database Developer
2 3 (42.86%) Java Developer
3 1 (14.29%) Administrator
3 1 (14.29%) DevOps Administrator
3 1 (14.29%) Java Scala Developer
3 1 (14.29%) Scala Developer
3 1 (14.29%) Senior Developer
3 1 (14.29%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 3 (42.86%) RESTful
1 3 (42.86%) Spark Streaming
1 3 (42.86%) Spring Cloud
1 3 (42.86%) Web Services
2 2 (28.57%) Akka
2 2 (28.57%) Spring
3 1 (14.29%) AngularJS
3 1 (14.29%) Kafka
3 1 (14.29%) Memcached
3 1 (14.29%) Node.js
3 1 (14.29%) React
3 1 (14.29%) Spring Boot
Miscellaneous
1 1 (14.29%) Greenfield Project
Operating Systems
1 2 (28.57%) Linux
2 1 (14.29%) Unix
Processes & Methodologies
1 6 (85.71%) Agile Software Development
1 6 (85.71%) TDD
2 4 (57.14%) BDD
2 4 (57.14%) Continuous Integration
3 3 (42.86%) Analytics
3 3 (42.86%) Data Analytics
3 3 (42.86%) Data Modelling
3 3 (42.86%) Loose Coupling
3 3 (42.86%) Microservices
4 2 (28.57%) DevOps
4 2 (28.57%) OO
4 2 (28.57%) Open Source
5 1 (14.29%) ATDD
5 1 (14.29%) Configuration Management
5 1 (14.29%) Continuous Delivery
5 1 (14.29%) CQRS
5 1 (14.29%) Domain Models
5 1 (14.29%) Mentoring
5 1 (14.29%) Service Design
5 1 (14.29%) Test Automation
Programming Languages
1 4 (57.14%) SQL
2 3 (42.86%) Java
3 2 (28.57%) Scala
4 1 (14.29%) Bash Shell
4 1 (14.29%) JavaScript
4 1 (14.29%) Perl
4 1 (14.29%) Python
4 1 (14.29%) Ruby
Quality Assurance & Compliance
1 3 (42.86%) QA
System Software
1 1 (14.29%) Docker
1 1 (14.29%) VMware ESXi
1 1 (14.29%) vSphere
Systems Management
1 1 (14.29%) Ansible
1 1 (14.29%) Kubernetes
1 1 (14.29%) Opscode Chef
1 1 (14.29%) Puppet
Vendors
1 1 (14.29%) VMware