The following table provides summary statistics for contract job vacancies advertised in London with a requirement for Lucene skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Lucene over the 3 months to 23 March 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.

3 months to
23 Mar 2017
Same period 2016 Same period 2015
Apache Lucene
England / London
Rank 388 399 381
Rank change year-on-year +11 -18  
Contract jobs citing Lucene 14 20 28
As % of all contract IT jobs advertised in London 0.073% 0.091% 0.13%
As % of the Libraries, Frameworks & Software Standards category 0.21% 0.29% 0.44%
Number of daily rates quoted 8 16 17
Median daily rate £575 £450 £550
Median daily rate % change year-on-year +27.77% -18.18%  
90% offered a daily rate of more than £425 £330 £413
10% offered a daily rate of more than £615 £500 £600
UK excluding London median daily rate £525 £438 £400
% change year-on-year +20.00% +9.37%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Lucene is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
London
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 6686 6989 6301
As % of all contract IT job vacancies advertised in London 34.81% 31.78% 30.16%
Number of daily rates quoted 4978 5229 4550
Median daily rate £475 £450 £425
Median daily rate % change year-on-year +5.55% +5.88%  
90% offered a daily rate of more than £345 £325 £313
10% offered a daily rate of more than £613 £600 £575
UK excluding London median daily rate £375 £363 £350
% change year-on-year +3.44% +3.57%  
Number of hourly rates quoted 46 30 27
Median hourly rate £47.50 £48.92 £27.37
Median hourly rate % change year-on-year -2.89% +78.71%  
90% offered a hourly rate of more than £17.35 £22.00 £20.00
10% offered a hourly rate of more than £100.00 £55.00 £55.00
UK excluding London median hourly rate £40.00 £38.00 £36.00
% change year-on-year +5.26% +5.55%  

Lucene
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing Lucene as a proportion of all contract or permanent IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for Lucene in London

Lucene
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for Lucene in London

Lucene
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing Lucene in London over the 3 months to 23 March 2017.

Contractor daily rate histogram for Lucene in London

Lucene
Contractor Hourly Rate Trend in London

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing Lucene in London.

Contractor hourly rate trend for Lucene in London

Lucene
Top 30 Related IT Skills in London

For the 6 months to 23 March 2017, IT contractor jobs citing Lucene 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 London region with a requirement for Lucene.

1 57 (89.06%) Apache Solr
2 37 (57.81%) Agile Software Development
3 36 (56.25%) SQL
4 35 (54.69%) Web Services
4 35 (54.69%) JavaScript
5 33 (51.56%) RESTful
6 32 (50.00%) Java
6 32 (50.00%) Apache
7 31 (48.44%) SOAP
8 30 (46.88%) HTML
8 30 (46.88%) CSS
8 30 (46.88%) Adobe
8 30 (46.88%) Adobe Experience Manager
9 29 (45.31%) XML
10 28 (43.75%) OO
10 28 (43.75%) jQuery
11 27 (42.19%) JSON
11 27 (42.19%) Ajax
12 26 (40.63%) Apache Sling
12 26 (40.63%) Apache Felix
12 26 (40.63%) RabbitMQ
13 25 (39.06%) OSGi
13 25 (39.06%) OOD
14 21 (32.81%) Unix
15 20 (31.25%) NoSQL
16 19 (29.69%) MongoDB
16 19 (29.69%) Apache Spark
17 18 (28.13%) Bash Shell
17 18 (28.13%) Big Data
17 18 (28.13%) Hadoop

Lucene
Top Related IT Skills in 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 57 (89.06%) Apache Solr
2 32 (50.00%) Apache
3 30 (46.88%) Adobe Experience Manager
4 19 (29.69%) Apache Spark
5 14 (21.88%) Elasticsearch
6 12 (18.75%) Apache Pig
7 10 (15.63%) CMS
8 4 (6.25%) Mule
8 4 (6.25%) Mule ESB
8 4 (6.25%) SharePoint
8 4 (6.25%) WebLogic Portal
9 2 (3.13%) Drupal
9 2 (3.13%) JBoss
9 2 (3.13%) Tomcat
10 1 (1.56%) Documentum
10 1 (1.56%) IIS
10 1 (1.56%) Jetty
10 1 (1.56%) OpenStack
10 1 (1.56%) WebLogic
10 1 (1.56%) WebSphere
Cloud Services
1 10 (15.63%) Amazon AWS
2 5 (7.81%) Amazon EC2
3 4 (6.25%) Microsoft Azure
4 1 (1.56%) Amazon S3
4 1 (1.56%) Amazon SQS
4 1 (1.56%) AWS CloudFormation
4 1 (1.56%) GitHub
Communications & Networking
1 2 (3.13%) Intranet
Database & Business Intelligence
1 20 (31.25%) NoSQL
2 19 (29.69%) MongoDB
3 18 (28.13%) Big Data
3 18 (28.13%) Hadoop
4 17 (26.56%) Apache Hive
5 14 (21.88%) Apache Cassandra
6 13 (20.31%) MarkLogic
6 13 (20.31%) MySQL
6 13 (20.31%) Riak
7 12 (18.75%) Data Warehouse
7 12 (18.75%) Impala
8 5 (7.81%) Data Mining
8 5 (7.81%) HBase
9 4 (6.25%) Endeca
9 4 (6.25%) Neo4j
9 4 (6.25%) OrientDB
9 4 (6.25%) Redis
9 4 (6.25%) Relational Database
9 4 (6.25%) SQL Server
10 3 (4.69%) MariaDB
Development Applications
1 12 (18.75%) Git (software)
2 6 (9.38%) Jenkins
3 2 (3.13%) Subversion
General
1 9 (14.06%) Finance
2 4 (6.25%) Banking
3 2 (3.13%) Retail
4 1 (1.56%) Automotive
4 1 (1.56%) Front Office
4 1 (1.56%) Legal
Job Titles
1 41 (64.06%) Developer
2 12 (18.75%) Java Developer
3 6 (9.38%) DevOps Engineer
4 5 (7.81%) Big Data Engineer
4 5 (7.81%) Senior Developer
4 5 (7.81%) Senior Java Developer
5 4 (6.25%) Architect
5 4 (6.25%) Data Engineer
5 4 (6.25%) Senior Software Engineer
5 4 (6.25%) Software Engineer
6 3 (4.69%) Applications Developer
6 3 (4.69%) Lead Developer
6 3 (4.69%) SOA Architect
6 3 (4.69%) Solutions Architect
7 2 (3.13%) AWS DevOps
7 2 (3.13%) AWS Engineer
7 2 (3.13%) Big Data Developer
7 2 (3.13%) Data Modeller
7 2 (3.13%) Drupal Developer
7 2 (3.13%) Senior Big Data Developer
Libraries, Frameworks & Software Standards
1 35 (54.69%) Web Services
2 33 (51.56%) RESTful
3 31 (48.44%) SOAP
4 30 (46.88%) CSS
4 30 (46.88%) HTML
5 29 (45.31%) XML
6 28 (43.75%) jQuery
7 27 (42.19%) Ajax
7 27 (42.19%) JSON
8 26 (40.63%) Apache Felix
8 26 (40.63%) Apache Sling
8 26 (40.63%) RabbitMQ
9 25 (39.06%) OSGi
10 17 (26.56%) Kafka
11 16 (25.00%) Spring
12 11 (17.19%) Hibernate
13 9 (14.06%) JMS
14 5 (7.81%) Natural Language Processing
14 5 (7.81%) Node.js
15 4 (6.25%) HTML5
Miscellaneous
1 15 (23.44%) Analytical Skills
2 4 (6.25%) PKI
3 3 (4.69%) Algorithms
3 3 (4.69%) iPad
3 3 (4.69%) Replication
4 1 (1.56%) Management Information System
Operating Systems
1 21 (32.81%) Unix
2 13 (20.31%) Linux
3 3 (4.69%) Android
3 3 (4.69%) Apple iOS
3 3 (4.69%) CentOS
3 3 (4.69%) Red Hat Enterprise Linux
4 1 (1.56%) Solaris
Processes & Methodologies
1 37 (57.81%) Agile Software Development
2 28 (43.75%) OO
3 25 (39.06%) OOD
4 17 (26.56%) MapReduce
5 16 (25.00%) Open Source
6 14 (21.88%) Data Analysis
7 12 (18.75%) Statistical Modelling
8 10 (15.63%) ETL
9 8 (12.50%) DevOps
10 5 (7.81%) E-Commerce
10 5 (7.81%) Software Engineering
10 5 (7.81%) TDD
11 4 (6.25%) B2C
11 4 (6.25%) Build Automation
11 4 (6.25%) CRM
11 4 (6.25%) SOA
12 3 (4.69%) Anti-Money Laundering
12 3 (4.69%) Data Visualisation
12 3 (4.69%) Information Retrieval
12 3 (4.69%) Machine Learning
Programming Languages
1 36 (56.25%) SQL
2 35 (54.69%) JavaScript
3 32 (50.00%) Java
4 18 (28.13%) Bash Shell
5 17 (26.56%) Python
6 13 (20.31%) Perl
7 12 (18.75%) R
7 12 (18.75%) Scala
8 4 (6.25%) C#
9 3 (4.69%) PHP
10 1 (1.56%) Go
10 1 (1.56%) Ruby
10 1 (1.56%) Shell Script
System Software
1 6 (9.38%) Docker
2 5 (7.81%) HDFS
3 2 (3.13%) GlusterFS
3 2 (3.13%) Varnish
Systems Management
1 17 (26.56%) Hadoop YARN
2 7 (10.94%) Opscode Chef
3 6 (9.38%) Puppet
4 5 (7.81%) Nagios
5 4 (6.25%) CA Single Sign-On
5 4 (6.25%) OpenSSO
6 2 (3.13%) Piwik
7 1 (1.56%) Ansible
7 1 (1.56%) Kibana
7 1 (1.56%) logstash
7 1 (1.56%) Packer
7 1 (1.56%) Salt
Vendors
1 30 (46.88%) Adobe
2 6 (9.38%) Oracle
3 4 (6.25%) Apigee
3 4 (6.25%) ATG
3 4 (6.25%) BEA
4 1 (1.56%) EMC
4 1 (1.56%) FatWire
4 1 (1.56%) Google
4 1 (1.56%) Sun