Period
to 27 October 2021

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 27 October 2021 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
27 Oct 2021
Same period 2020 Same period 2019
Rank 166 110 189
Rank change year-on-year -56 +79 -21
Contract jobs citing Apache Cassandra 14 8 43
As % of all contract jobs advertised in the City of London 0.36% 0.44% 0.72%
As % of the Database & Business Intelligence category 1.56% 1.69% 2.83%
Number of daily rates quoted 13 7 38
10th Percentile £478 £413 £463
25th Percentile £488 £469 £516
Median daily rate (50th Percentile) £650 £550 £575
Median % change year-on-year +18.18% -4.35% -
75th Percentile £675 £600 £638
90th Percentile " £625 £658
Central London median daily rate £650 £563 £575
% change year-on-year +15.56% -2.17% -

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 899 473 1,520
As % of all contract IT jobs advertised in the City of London 22.96% 26.28% 25.60%
Number of daily rates quoted 682 358 1,226
10th Percentile £400 £359 £388
25th Percentile £488 £425 £456
Median daily rate (50th Percentile) £570 £525 £525
Median % change year-on-year +8.57% - -
75th Percentile £664 £600 £608
90th Percentile £738 £675 £675
Central London median daily rate £570 £525 £525
% change year-on-year +8.57% - -
Number of hourly rates quoted 7 5 5
10th Percentile " £18.20 £21.20
25th Percentile £8.00 £20.00 £21.25
Median hourly rate £22.50 £22.00 £44.57
Median % change year-on-year +2.27% -50.63% +98.07%
75th Percentile £34.38 £38.25 £49.13
90th Percentile £45.85 £38.85 £52.95
Central London median hourly rate £22.50 £22.00 £44.57
% change year-on-year +2.27% -50.63% +98.07%

Apache Cassandra
Job Vacancy Trend in the City of London

Job postings citing Apache Cassandra as a proportion 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

3-month moving average daily rate quoted in jobs citing Apache Cassandra in the City of London.

Daily rate trend for Apache Cassandra in the City of London

Apache Cassandra
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing Apache Cassandra in the City of London over the 6 months to 27 October 2021.

Daily rate histogram for Apache Cassandra in the City of London

For the 6 months to 27 October 2021, 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 11 (78.57%) Java
2 9 (64.29%) Apache Spark
3 8 (57.14%) Analytics
3 8 (57.14%) Hadoop
4 7 (50.00%) Machine Learning
4 7 (50.00%) Big Data
4 7 (50.00%) Kafka
4 7 (50.00%) SQL
4 7 (50.00%) Python
4 7 (50.00%) Data Modelling
5 5 (35.71%) C
5 5 (35.71%) Spring
5 5 (35.71%) Artificial Intelligence
5 5 (35.71%) Predictive Modelling
5 5 (35.71%) C++
5 5 (35.71%) Natural Language Processing
5 5 (35.71%) Tableau
5 5 (35.71%) Visualisation
5 5 (35.71%) Data Cleansing
5 5 (35.71%) Statistics
5 5 (35.71%) Degree
5 5 (35.71%) Mathematics
5 5 (35.71%) Computer Science
5 5 (35.71%) Algorithms
5 5 (35.71%) Analytical Skills
5 5 (35.71%) Data Engineering
5 5 (35.71%) Actionable Insight
5 5 (35.71%) Data Science
6 4 (28.57%) Microservices
6 4 (28.57%) AWS

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 9 (64.29%) Apache Spark
2 1 (7.14%) Apache
Cloud Services
1 4 (28.57%) AWS
2 2 (14.29%) Amazon EC2
3 1 (7.14%) Azure
3 1 (7.14%) GCP
3 1 (7.14%) GitHub
Database & Business Intelligence
1 8 (57.14%) Hadoop
2 7 (50.00%) Big Data
3 5 (35.71%) Tableau
4 3 (21.43%) HBase
4 3 (21.43%) MySQL
4 3 (21.43%) NoSQL
5 2 (14.29%) Flink
5 2 (14.29%) MongoDB
6 1 (7.14%) Apache Hive
6 1 (7.14%) Data Warehouse
6 1 (7.14%) Scylla
6 1 (7.14%) SQL Server
Development Applications
1 1 (7.14%) Git (software)
General
1 5 (35.71%) Analytical Skills
2 2 (14.29%) Finance
3 1 (7.14%) Financial Institution
3 1 (7.14%) Social Skills
Job Titles
1 5 (35.71%) Data Scientist
1 5 (35.71%) Senior Data Scientist
2 4 (28.57%) Developer
3 3 (21.43%) Java Developer
4 2 (14.29%) Data Engineer
5 1 (7.14%) Architect
5 1 (7.14%) Big Data Manager
5 1 (7.14%) Cassandra Engineer
5 1 (7.14%) Data Manager
5 1 (7.14%) Full Stack Developer
5 1 (7.14%) Hadoop Engineer
5 1 (7.14%) Platform Manager
5 1 (7.14%) Python Developer
5 1 (7.14%) React Developer
5 1 (7.14%) Senior Developer
5 1 (7.14%) Senior Java Developer
5 1 (7.14%) SQL Developer
5 1 (7.14%) Technical Architect
Libraries, Frameworks & Software Standards
1 7 (50.00%) Kafka
2 5 (35.71%) Spring
3 3 (21.43%) Spark Streaming
4 2 (14.29%) Spring Boot
4 2 (14.29%) Spring Security
5 1 (7.14%) .NET
5 1 (7.14%) ADO.NET
5 1 (7.14%) Apache Beam
5 1 (7.14%) Hibernate
5 1 (7.14%) React
Miscellaneous
1 5 (35.71%) Algorithms
2 2 (14.29%) Public Cloud
3 1 (7.14%) Greenfield Project
Operating Systems
1 1 (7.14%) Linux
Processes & Methodologies
1 8 (57.14%) Analytics
2 7 (50.00%) Data Modelling
2 7 (50.00%) Machine Learning
3 5 (35.71%) Actionable Insight
3 5 (35.71%) Artificial Intelligence
3 5 (35.71%) Computer Science
3 5 (35.71%) Data Cleansing
3 5 (35.71%) Data Engineering
3 5 (35.71%) Data Science
3 5 (35.71%) Mathematics
3 5 (35.71%) Natural Language Processing
3 5 (35.71%) Predictive Modelling
3 5 (35.71%) Statistics
3 5 (35.71%) Visualisation
4 4 (28.57%) Microservices
5 3 (21.43%) Agile Software Development
5 3 (21.43%) Open Source
5 3 (21.43%) Problem-Solving
6 2 (14.29%) Data Pipeline
7 1 (7.14%) Event-Driven
Programming Languages
1 11 (78.57%) Java
2 7 (50.00%) Python
2 7 (50.00%) SQL
3 5 (35.71%) C
3 5 (35.71%) C++
4 2 (14.29%) Java 8
5 1 (7.14%) C#
5 1 (7.14%) CQL
5 1 (7.14%) JavaScript
5 1 (7.14%) Perl
Qualifications
1 5 (35.71%) Degree
2 1 (7.14%) Security Cleared
Quality Assurance & Compliance
1 2 (14.29%) Data Quality
System Software
1 1 (7.14%) HDFS
Systems Management
1 3 (21.43%) Kubernetes
Vendors
1 2 (14.29%) Dynatrace
1 2 (14.29%) Splunk
2 1 (7.14%) Ab Initio
2 1 (7.14%) MapR
2 1 (7.14%) Oracle