Period
to 20 July 2018

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Garbage Collection skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Garbage Collection over the 6 months to 20 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.

Garbage Collection
Central London > City of London
6 months to
20 Jul 2018
Same period 2017 Same period 2016
Rank 249 226 212
Rank change year-on-year -23 -14 +67
Contract jobs citing Garbage Collection 7 3 33
As % of all contract IT jobs advertised in the City of London 0.099% 0.047% 0.48%
As % of the Processes & Methodologies category 0.11% 0.053% 0.55%
Number of daily rates quoted 6 3 33
City of London median daily rate £619 £410 £638
Median daily rate % change year-on-year +50.91% -35.69% +10.87%
10th Percentile £569 £401 £535
90th Percentile £697 £583 £669
Central London median daily rate £600 £410 £638
% change year-on-year +46.34% -35.69% +10.87%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

Garbage Collection is in the Processes and Methodologies 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 process or methodology skills.

All Process and Methodology Skills
City of London
Contract vacancies with a requirement for process or methodology skills 6,172 5,666 5,986
As % of all contract IT jobs advertised in the City of London 86.89% 87.93% 87.37%
Number of daily rates quoted 4,880 4,372 4,818
City of London median daily rate £513 £500 £475
Median daily rate % change year-on-year +2.50% +5.26% +5.56%
10th Percentile £338 £313 £310
90th Percentile £688 £675 £650
Central London median daily rate £500 £500 £473
% change year-on-year - +5.82% +5.00%
Number of hourly rates quoted 111 56 56
City of London median hourly rate £18.70 £20.52 £19.99
Median hourly rate % change year-on-year -8.87% +2.64% -4.80%
10th Percentile £13.00 £13.31 £11.38
90th Percentile £33.00 £32.06 £37.91
Central London median hourly rate £18.70 £18.70 £20.00
% change year-on-year - -6.50% -1.10%

Garbage Collection
Job Vacancy Trend in the City of London

Job postings citing Garbage Collection as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for Garbage Collection in the City of London

Garbage Collection
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 Garbage Collection in the City of London.

Contractor daily rate trend for Garbage Collection in the City of London

Garbage Collection
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Garbage Collection in the City of London over the 6 months to 20 July 2018.

Contractor daily rate histogram for Garbage Collection in the City of London

For the 6 months to 20 July 2018, IT contractor jobs citing Garbage Collection 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 Garbage Collection.

1 6 (85.71%) C#
2 4 (57.14%) Foreign Exchange (FX)
2 4 (57.14%) OO
2 4 (57.14%) Front Office
2 4 (57.14%) Finance
2 4 (57.14%) Multithreading
2 4 (57.14%) Electronic Trading
2 4 (57.14%) TDD
3 3 (42.86%) HTML5
3 3 (42.86%) Kafka
3 3 (42.86%) Akka
3 3 (42.86%) TypeScript
3 3 (42.86%) React
3 3 (42.86%) Spring Boot
3 3 (42.86%) ES6
3 3 (42.86%) SQL Server 2014
3 3 (42.86%) FXall
3 3 (42.86%) Hibernate
3 3 (42.86%) Spring
3 3 (42.86%) Maven
3 3 (42.86%) WPF
3 3 (42.86%) Python
3 3 (42.86%) Reuters
3 3 (42.86%) SQL Server
3 3 (42.86%) HTML
3 3 (42.86%) Java
3 3 (42.86%) JavaScript
3 3 (42.86%) Redux
3 3 (42.86%) Yarn
3 3 (42.86%) Java 8

Garbage Collection
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 1 (14.29%) Apache Solr
1 1 (14.29%) Apache Spark
1 1 (14.29%) Tomcat
Cloud Services
1 3 (42.86%) Yarn
2 2 (28.57%) npm
Communications & Networking
1 1 (14.29%) Kerberos
Database & Business Intelligence
1 3 (42.86%) SQL Server
1 3 (42.86%) SQL Server 2014
2 1 (14.29%) Apache Hive
2 1 (14.29%) Big Data
2 1 (14.29%) Hadoop
2 1 (14.29%) HBase
2 1 (14.29%) Sqoop
Development Applications
1 3 (42.86%) Maven
2 2 (28.57%) Git (software)
2 2 (28.57%) Jenkins
2 2 (28.57%) JUnit
2 2 (28.57%) TeamCity
General
1 4 (57.14%) Finance
1 4 (57.14%) Front Office
2 2 (28.57%) Banking
3 1 (14.29%) Financial Institution
Job Titles
1 6 (85.71%) Developer
2 3 (42.86%) C# Developer
3 2 (28.57%) Java Developer
4 1 (14.29%) Big Data Developer
4 1 (14.29%) C++ Developer
4 1 (14.29%) Electronic Trading C++ Developer
4 1 (14.29%) Electronic Trading Developer
Libraries, Frameworks & Software Standards
1 3 (42.86%) Akka
1 3 (42.86%) Hibernate
1 3 (42.86%) HTML
1 3 (42.86%) HTML5
1 3 (42.86%) Kafka
1 3 (42.86%) React
1 3 (42.86%) Redux
1 3 (42.86%) Spring
1 3 (42.86%) Spring Boot
1 3 (42.86%) WPF
2 2 (28.57%) JSON
2 2 (28.57%) REST
2 2 (28.57%) Zuul
3 1 (14.29%) .NET
3 1 (14.29%) FIX Protocol
3 1 (14.29%) J2EE
Miscellaneous
1 4 (57.14%) Foreign Exchange (FX)
2 2 (28.57%) Credit Risk
2 2 (28.57%) Market Risk
3 1 (14.29%) Fixed Income
Operating Systems
1 2 (28.57%) Linux
Processes & Methodologies
1 4 (57.14%) Electronic Trading
1 4 (57.14%) Multithreading
1 4 (57.14%) OO
1 4 (57.14%) TDD
2 2 (28.57%) Asynchronous Programming
2 2 (28.57%) Continuous Integration
2 2 (28.57%) Parallel Processing
2 2 (28.57%) Software Engineering
2 2 (28.57%) SOLID
2 2 (28.57%) Test Automation
2 2 (28.57%) Unit Testing
3 1 (14.29%) Agile Software Development
3 1 (14.29%) BDD
3 1 (14.29%) Concurrent Programming
3 1 (14.29%) DevOps
3 1 (14.29%) E-Commerce
3 1 (14.29%) MapReduce
3 1 (14.29%) Product Management
3 1 (14.29%) Regression Testing
Programming Languages
1 6 (85.71%) C#
2 3 (42.86%) ES6
2 3 (42.86%) Java
2 3 (42.86%) Java 8
2 3 (42.86%) JavaScript
2 3 (42.86%) Python
2 3 (42.86%) TypeScript
3 2 (28.57%) SQL
4 1 (14.29%) C++
System Software
1 1 (14.29%) Apache ZooKeeper
1 1 (14.29%) HDFS
Systems Management
1 1 (14.29%) Hadoop YARN
1 1 (14.29%) Oozie
Vendors
1 3 (42.86%) FXall
1 3 (42.86%) Reuters
2 1 (14.29%) Tableau