Period
to 10 December 2018

The following table provides summary statistics for contract job vacancies advertised in Croydon with a requirement for Drools skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Drools over the 6 months to 10 December 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.

Drools
South London > Croydon
6 months to
10 Dec 2018
Same period 2017 Same period 2016
Rank 56 44 74
Rank change year-on-year -12 +30 -31
Contract jobs citing Drools 60 56 1
As % of all contract IT jobs advertised in Croydon 5.05% 5.94% 0.19%
As % of the Libraries, Frameworks & Software Standards category 13.02% 15.09% 0.54%
Number of daily rates quoted 54 46 0
Croydon median daily rate £550 £550 -
South London median daily rate £550 £550 -
Number of hourly rates quoted 0 0 0
Croydon median hourly rate - - -
South London median hourly rate - - -

Drools is in the Software Libraries and Frameworks category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Croydon with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
Croydon
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 461 371 186
As % of all contract IT jobs advertised in Croydon 38.77% 39.34% 34.90%
Number of daily rates quoted 345 262 93
Croydon median daily rate £500 £512 £425
Median daily rate % change year-on-year -2.25% +20.35% -5.56%
10th Percentile £380 £369 £313
90th Percentile £600 £675 £525
South London median daily rate £500 £500 £425
% change year-on-year - +17.65% +13.33%
Number of hourly rates quoted 1 1 0
Croydon median hourly rate £35.00 £28.50 -
Median hourly rate % change year-on-year +22.81% - -
South London median hourly rate £44.18 £47.83 £50.00
% change year-on-year -7.63% -4.34% +2.22%

Drools
Job Vacancy Trend in Croydon

Job postings citing Drools as a percentage of all IT jobs advertised in Croydon.

Job vacancy trend for Drools in Croydon

Drools
Contractor Daily Rate Trend in Croydon

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Drools in Croydon.

Contractor daily rate trend for Drools in Croydon

For the 6 months to 10 December 2018, IT contractor jobs citing Drools 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 Croydon region with a requirement for Drools.

1 60 (100.00%) Java
1 60 (100.00%) JIRA
1 60 (100.00%) SC Cleared
1 60 (100.00%) Security Cleared
1 60 (100.00%) Confluence
1 60 (100.00%) Java 8
2 58 (96.67%) REST
2 58 (96.67%) Microservices
3 51 (85.00%) Agile Software Development
3 51 (85.00%) Maven
4 49 (81.67%) Checkstyle
4 49 (81.67%) Java EE
4 49 (81.67%) VMS
4 49 (81.67%) RDBMS
4 49 (81.67%) Hibernate
4 49 (81.67%) JUnit
4 49 (81.67%) Unix
4 49 (81.67%) OOA/OOD
4 49 (81.67%) OO
4 49 (81.67%) JMS
4 49 (81.67%) WildFly
4 49 (81.67%) Liquibase
4 49 (81.67%) SonarQube
4 49 (81.67%) Relational Database
4 49 (81.67%) Vagrant
4 49 (81.67%) CQRS
4 49 (81.67%) JAX-RS
4 49 (81.67%) JPQL
4 49 (81.67%) Mockito
4 49 (81.67%) Git (software)

Drools
Co-occurring IT Skills in Croydon 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 60 (100.00%) Confluence
2 49 (81.67%) WildFly
3 11 (18.33%) Apache Solr
3 11 (18.33%) Apache Spark
4 3 (5.00%) Apache
4 3 (5.00%) Elasticsearch
Cloud Services
1 1 (1.67%) Amazon AWS
Communications & Networking
1 11 (18.33%) Kerberos
Database & Business Intelligence
1 49 (81.67%) RDBMS
1 49 (81.67%) Relational Database
2 11 (18.33%) Big Data
2 11 (18.33%) HBase
2 11 (18.33%) PostgreSQL
3 8 (13.33%) Hadoop
4 2 (3.33%) MongoDB
5 1 (1.67%) NoSQL
Development Applications
1 60 (100.00%) JIRA
2 51 (85.00%) Maven
3 49 (81.67%) Checkstyle
3 49 (81.67%) Git (software)
3 49 (81.67%) JUnit
3 49 (81.67%) Liquibase
3 49 (81.67%) Mockito
3 49 (81.67%) SonarQube
3 49 (81.67%) Vagrant
4 11 (18.33%) IntelliJ
5 9 (15.00%) Cucumber
Job Titles
1 59 (98.33%) Developer
1 59 (98.33%) Java Developer
2 54 (90.00%) SC Cleared Java Developer
3 2 (3.33%) Backend Developer
4 1 (1.67%) Big Data Engineer
4 1 (1.67%) Data Engineer
4 1 (1.67%) Lead Developer
4 1 (1.67%) Lead Java Developer
Libraries, Frameworks & Software Standards
1 58 (96.67%) REST
2 49 (81.67%) Hibernate
2 49 (81.67%) Java EE
2 49 (81.67%) JAX-RS
2 49 (81.67%) JMS
2 49 (81.67%) Lambda Expressions
2 49 (81.67%) RESTful
2 49 (81.67%) WireMock
3 11 (18.33%) Kafka
3 11 (18.33%) Spring
3 11 (18.33%) Spring Boot
4 10 (16.67%) Apache Camel
5 2 (3.33%) JSON
5 2 (3.33%) JSON Schema
5 2 (3.33%) Spring MVC
Miscellaneous
1 49 (81.67%) Linux Command Line
2 8 (13.33%) Algorithms
3 2 (3.33%) PKI
Operating Systems
1 49 (81.67%) Unix
1 49 (81.67%) VMS
2 11 (18.33%) Linux
Processes & Methodologies
1 58 (96.67%) Microservices
2 51 (85.00%) Agile Software Development
3 49 (81.67%) CQRS
3 49 (81.67%) Dependency Injection
3 49 (81.67%) Domain-Driven Design
3 49 (81.67%) OO
3 49 (81.67%) OOA/OOD
3 49 (81.67%) Test Automation
4 11 (18.33%) BDD
4 11 (18.33%) Data Architecture
4 11 (18.33%) Mentoring
4 11 (18.33%) TDD
5 10 (16.67%) Coaching
6 9 (15.00%) Data Development
6 9 (15.00%) Systems Engineering
7 8 (13.33%) Problem-Solving
8 2 (3.33%) Continuous Integration
8 2 (3.33%) MVC
8 2 (3.33%) Software Engineering
8 2 (3.33%) Trunk-Based Development
Programming Languages
1 60 (100.00%) Java
1 60 (100.00%) Java 8
2 49 (81.67%) JPQL
3 1 (1.67%) Gremlin
Qualifications
1 60 (100.00%) SC Cleared
1 60 (100.00%) Security Cleared
2 2 (3.33%) DV Cleared
3 1 (1.67%) BPSS Clearance
3 1 (1.67%) DBS Check
System Software
1 11 (18.33%) Docker
2 8 (13.33%) HDFS
Systems Management
1 11 (18.33%) Ansible
1 11 (18.33%) Kubernetes
1 11 (18.33%) Terraform