Period
to 24 November 2017

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Apache Solr skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Apache Solr over the 6 months to 24 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 Solr
Central London > City of London
6 months to
24 Nov 2017
Same period 2016 Same period 2015
Rank 213 229 265
Rank change year-on-year +16 +36 +23
Contract jobs citing Apache Solr 28 11 6
As % of all contract IT jobs advertised in the City of London 0.39% 0.16% 0.066%
As % of the Application Platforms category 2.72% 0.93% 0.40%
Number of daily rates quoted 27 9 5
City of London median daily rate £450 £485 £375
Median daily rate % change year-on-year -7.22% +29.33% -16.67%
10th Percentile £315 £404 £336
90th Percentile £675 £575 £503
Central London median daily rate £450 £493 £388
% change year-on-year -8.63% +27.10% +5.08%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

Apache Solr is in the Application Platforms 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 application platform skills.

All Application Platform Skills
City of London
Contract vacancies with a requirement for application platform skills 1030 1187 1493
As % of all contract IT jobs advertised in the City of London 14.40% 17.80% 16.43%
Number of daily rates quoted 809 930 1127
City of London median daily rate £500 £450 £425
Median daily rate % change year-on-year +11.11% +5.88% +6.25%
10th Percentile £278 £312 £263
90th Percentile £675 £663 £638
Central London median daily rate £498 £450 £425
% change year-on-year +10.56% +5.88% +6.25%
Number of hourly rates quoted 8 16 21
City of London median hourly rate £17.00 £19.00 £17.98
Median hourly rate % change year-on-year -10.53% +5.67% +5.76%
10th Percentile £10.88 £11.25 £11.25
90th Percentile £27.50 £55.93 £42.25
Central London median hourly rate £17.85 £17.30 £17.74
% change year-on-year +3.18% -2.48% +7.52%

Apache Solr
Job Vacancy Trend in the City of London

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

Job vacancy trend for Apache Solr in the City of London

Apache Solr
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 Apache Solr in the City of London.

Contractor daily rate trend for Apache Solr in the City of London

Apache Solr
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Apache Solr in the City of London over the 6 months to 24 November 2017.

Contractor daily rate histogram for Apache Solr in the City of London

For the 6 months to 24 November 2017, IT contractor jobs citing Apache Solr 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 City of London region with a requirement for Apache Solr.

1 21 (75.00%) Agile Software Development
2 17 (60.71%) Git (software)
3 15 (53.57%) Jenkins
4 13 (46.43%) Elasticsearch
4 13 (46.43%) Drupal
4 13 (46.43%) JavaScript
5 12 (42.86%) PHP
5 12 (42.86%) HTML
5 12 (42.86%) CSS
5 12 (42.86%) jQuery
5 12 (42.86%) HTML5
5 12 (42.86%) CSS3
6 11 (39.29%) OO
6 11 (39.29%) E-Commerce
7 10 (35.71%) Java
7 10 (35.71%) Ajax
8 9 (32.14%) JIRA
8 9 (32.14%) QA
8 9 (32.14%) Workflow
8 9 (32.14%) CMS
8 9 (32.14%) DevOps
8 9 (32.14%) OO PHP
9 8 (28.57%) Finance
9 8 (28.57%) Disaster Recovery
9 8 (28.57%) CRM
10 7 (25.00%) Python
10 7 (25.00%) Amazon AWS
10 7 (25.00%) Big Data
11 6 (21.43%) Apache Cassandra
12 5 (17.86%) Hadoop

Apache Solr
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 13 (46.43%) Drupal
1 13 (46.43%) Elasticsearch
2 9 (32.14%) CMS
3 5 (17.86%) Apache Spark
4 4 (14.29%) Apache Pig
5 1 (3.57%) Apache
5 1 (3.57%) Tomcat
Cloud Services
1 7 (25.00%) Amazon AWS
2 2 (7.14%) Amazon EC2
2 2 (7.14%) Amazon ElastiCache
2 2 (7.14%) AWS Elastic Beanstalk
3 1 (3.57%) Amazon SQS
3 1 (3.57%) AWS CloudFormation
3 1 (3.57%) GitHub
3 1 (3.57%) PaaS
Communications & Networking
1 1 (3.57%) Kerberos
1 1 (3.57%) SSL
Database & Business Intelligence
1 7 (25.00%) Big Data
2 6 (21.43%) Apache Cassandra
3 5 (17.86%) Apache Hive
3 5 (17.86%) Hadoop
3 5 (17.86%) HBase
3 5 (17.86%) NoSQL
4 4 (14.29%) MySQL
5 3 (10.71%) MongoDB
5 3 (10.71%) Neo4j
6 1 (3.57%) SQL Server
Development Applications
1 17 (60.71%) Git (software)
2 15 (53.57%) Jenkins
3 9 (32.14%) JIRA
4 3 (10.71%) Vagrant
5 1 (3.57%) Grunt
5 1 (3.57%) gulp
5 1 (3.57%) Jasmine
5 1 (3.57%) JMeter
5 1 (3.57%) Mocha
5 1 (3.57%) RSpec
5 1 (3.57%) Sinon.JS
5 1 (3.57%) TeamCity
General
1 8 (28.57%) Finance
2 4 (14.29%) Marketing
2 4 (14.29%) Publishing
3 1 (3.57%) Digital Economy
3 1 (3.57%) Retail
Job Titles
1 21 (75.00%) Developer
2 9 (32.14%) Drupal Developer
2 9 (32.14%) PHP Developer
3 6 (21.43%) PHP Drupal Developer
4 4 (14.29%) Java Developer
4 4 (14.29%) Senior Developer
5 2 (7.14%) Big Data Developer
5 2 (7.14%) Big Data Engineer
5 2 (7.14%) Consultant
5 2 (7.14%) Data Engineer
5 2 (7.14%) DevOps Engineer
5 2 (7.14%) E-Commerce Developer
5 2 (7.14%) Java E-Commerce Developer
5 2 (7.14%) Java Scala Developer
5 2 (7.14%) Python Developer
5 2 (7.14%) Scala Developer
5 2 (7.14%) Senior E-Commerce Developer
5 2 (7.14%) Senior Java Developer
5 2 (7.14%) Senior Python Developer
6 1 (3.57%) Solr Developer
Libraries, Frameworks & Software Standards
1 12 (42.86%) CSS
1 12 (42.86%) CSS3
1 12 (42.86%) HTML
1 12 (42.86%) HTML5
1 12 (42.86%) jQuery
2 10 (35.71%) Ajax
3 5 (17.86%) Kafka
4 4 (14.29%) RabbitMQ
4 4 (14.29%) Web Services
5 3 (10.71%) RESTful
5 3 (10.71%) Sass
5 3 (10.71%) Twitter Bootstrap
6 2 (7.14%) JSON
6 2 (7.14%) Node.js
6 2 (7.14%) REST
6 2 (7.14%) Spring
6 2 (7.14%) Spring Boot
7 1 (3.57%) Elastic Stack
7 1 (3.57%) LAMP
7 1 (3.57%) React
Miscellaneous
1 4 (14.29%) Greenfield Project
2 1 (3.57%) Analytical Skills
2 1 (3.57%) Linux Command Line
Operating Systems
1 5 (17.86%) Linux
1 5 (17.86%) Unix
2 1 (3.57%) CentOS
2 1 (3.57%) Fedora
2 1 (3.57%) Mac OS X
2 1 (3.57%) Red Hat Enterprise Linux
Processes & Methodologies
1 21 (75.00%) Agile Software Development
2 11 (39.29%) E-Commerce
2 11 (39.29%) OO
3 9 (32.14%) DevOps
3 9 (32.14%) OO PHP
3 9 (32.14%) Workflow
4 8 (28.57%) CRM
4 8 (28.57%) Disaster Recovery
5 4 (14.29%) MapReduce
6 3 (10.71%) Microservices
6 3 (10.71%) OOP
6 3 (10.71%) TDD
7 2 (7.14%) Cross-Platform Development
7 2 (7.14%) Open Source
7 2 (7.14%) SOLID
8 1 (3.57%) BDD
8 1 (3.57%) Capacity Management
8 1 (3.57%) Machine Learning
8 1 (3.57%) Planning Poker
8 1 (3.57%) Root Cause Analysis
Programming Languages
1 13 (46.43%) JavaScript
2 12 (42.86%) PHP
3 10 (35.71%) Java
4 7 (25.00%) Python
5 4 (14.29%) Scala
6 2 (7.14%) SPARQL
6 2 (7.14%) SQL
7 1 (3.57%) Bash Shell
7 1 (3.57%) Ruby
Quality Assurance & Compliance
1 9 (32.14%) QA
System Software
1 5 (17.86%) Apache ZooKeeper
1 5 (17.86%) HDFS
2 3 (10.71%) Docker
3 1 (3.57%) Active Directory
3 1 (3.57%) Apache Flume
Systems Management
1 5 (17.86%) Ansible
2 3 (10.71%) Puppet
3 2 (7.14%) Terraform
4 1 (3.57%) Ambari
4 1 (3.57%) Apache Slider
4 1 (3.57%) Hadoop YARN
4 1 (3.57%) Kibana
4 1 (3.57%) logstash
4 1 (3.57%) Oozie
4 1 (3.57%) Opscode Chef
Vendors
1 1 (3.57%) Hortonworks