The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Refactoring skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Refactoring over the 3 months to 27 June 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.

Refactoring
London / City of London
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 140 146 192
Rank change year-on-year +6 +46  
Contract jobs citing Refactoring 24 17 9
As % of all contract IT jobs advertised in the City of London 0.73% 0.50% 0.16%
As % of the Processes & Methodologies category 0.82% 0.59% 0.19%
Number of daily rates quoted 16 16 7
Median daily rate £550 £493 £420
Median daily rate % change year-on-year +11.67% +17.26%  
90% offered a daily rate of more than £500 £425 £345
10% offered a daily rate of more than £650 £575 £545
UK excluding London median daily rate £375 £375 £400
% change year-on-year - -6.25%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £57.00 £37.50 £45.00
% change year-on-year +52.00% -16.66%  

Refactoring is in the process and methodology skills category. The next 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 and methodology skills.

Contract Process & Methodology Skills
City of London
Contract job vacancies with a requirement for process and methodology skills 2912 2905 4654
As % of all contract IT job vacancies advertised in the City of London 88.14% 85.77% 81.11%
Number of daily rates quoted 2231 2377 3660
Median daily rate £500 £475 £465
Median daily rate % change year-on-year +5.26% +2.15%  
90% offered a daily rate of more than £350 £338 £325
10% offered a daily rate of more than £650 £625 £625
UK excluding London median daily rate £415 £400 £385
% change year-on-year +3.75% +3.89%  
Number of hourly rates quoted 24 23 56
Median hourly rate £20.00 £19.00 £24.50
Median hourly rate % change year-on-year +5.26% -22.44%  
90% offered a hourly rate of more than £14.75 £12.50 £15.07
10% offered a hourly rate of more than £41.00 £35.20 £55.50
UK excluding London median hourly rate £34.00 £28.50 £30.00
% change year-on-year +19.29% -5.00%  

Refactoring
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing Refactoring as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

Job vacancy trend for Refactoring in the City of London

Refactoring
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 Refactoring in the City of London.

Contractor daily rate trend for Refactoring in the City of London

Refactoring
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Refactoring in the City of London over the 3 months to 27 June 2017.

Contractor daily rate histogram for Refactoring in the City of London

For the 6 months to 27 June 2017, IT contractor jobs citing Refactoring 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 Refactoring.

1 43 (95.56%) Agile Software Development
2 36 (80.00%) TDD
3 33 (73.33%) Java
3 33 (73.33%) BDD
4 32 (71.11%) Continuous Integration
5 31 (68.89%) JavaScript
6 30 (66.67%) Scrum
7 29 (64.44%) HTML
7 29 (64.44%) Amazon AWS
8 28 (62.22%) Git (software)
8 28 (62.22%) Kanban
8 28 (62.22%) CSS
9 27 (60.00%) HTML5
9 27 (60.00%) AngularJS
10 26 (57.78%) Groovy
10 26 (57.78%) Test Automation
10 26 (57.78%) Software Engineering
11 25 (55.56%) Web Services
12 24 (53.33%) SOA
12 24 (53.33%) SOLID
13 23 (51.11%) gulp
13 23 (51.11%) Front End Development
13 23 (51.11%) Dropwizard
13 23 (51.11%) Pair Programming
13 23 (51.11%) MVC
13 23 (51.11%) Domain-Driven Design
13 23 (51.11%) MongoDB
13 23 (51.11%) Web Application Development
14 21 (46.67%) React
15 20 (44.44%) Hystrix

Refactoring
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 6 (13.33%) CMS
1 6 (13.33%) EPiServer
2 3 (6.67%) Sitecore CMS
3 1 (2.22%) Apache
3 1 (2.22%) Apache Spark
Business Applications
1 3 (6.67%) Eloqua
Cloud Services
1 29 (64.44%) Amazon AWS
2 6 (13.33%) Microsoft Azure
3 3 (6.67%) Heroku
Communications & Networking
1 3 (6.67%) DNS
1 3 (6.67%) FTP
1 3 (6.67%) HTTP
1 3 (6.67%) SSL
1 3 (6.67%) TCP/IP
Database & Business Intelligence
1 23 (51.11%) MongoDB
2 7 (15.56%) NoSQL
3 6 (13.33%) Couchbase
4 4 (8.89%) PostgreSQL
4 4 (8.89%) Relational Database
5 3 (6.67%) SQL Server
6 2 (4.44%) Redis
7 1 (2.22%) Big Data
7 1 (2.22%) Data Lake
7 1 (2.22%) Hadoop
7 1 (2.22%) MySQL
7 1 (2.22%) RDBMS
Development Applications
1 28 (62.22%) Git (software)
2 23 (51.11%) gulp
3 20 (44.44%) Grunt
3 20 (44.44%) IntelliJ
4 3 (6.67%) Bower
4 3 (6.67%) Gradle
4 3 (6.67%) Karma Test Runner
4 3 (6.67%) Mocha
4 3 (6.67%) Protractor
4 3 (6.67%) Selenium
4 3 (6.67%) Sinon.JS
4 3 (6.67%) Team Foundation Server
4 3 (6.67%) Visual Studio
4 3 (6.67%) webpack
5 2 (4.44%) Moq
5 2 (4.44%) MSTest
5 2 (4.44%) NUnit
5 2 (4.44%) Rhino Mocks
6 1 (2.22%) Mercurial
6 1 (2.22%) Subversion
General
1 4 (8.89%) Marketing
2 3 (6.67%) Advertising
3 2 (4.44%) Finance
Job Titles
1 40 (88.89%) Developer
2 26 (57.78%) Java Developer
3 11 (24.44%) Full Stack Developer
4 9 (20.00%) Agile Developer
4 9 (20.00%) Agile Java Developer
4 9 (20.00%) JavaScript Developer
5 8 (17.78%) Analyst
5 8 (17.78%) Analyst Developer
6 5 (11.11%) Front End Developer (Client-Side Developer)
6 5 (11.11%) HTML Developer
6 5 (11.11%) Lead Analyst Developer
6 5 (11.11%) Lead Developer
7 3 (6.67%) Architect
7 3 (6.67%) AWS Developer
7 3 (6.67%) AWS DevOps
7 3 (6.67%) CSS Developer
7 3 (6.67%) DevOps Developer
7 3 (6.67%) EPiServer Developer
7 3 (6.67%) HTML CSS Developer
7 3 (6.67%) Platform Architect
Libraries, Frameworks & Software Standards
1 29 (64.44%) HTML
2 28 (62.22%) CSS
3 27 (60.00%) AngularJS
3 27 (60.00%) HTML5
4 25 (55.56%) Web Services
5 23 (51.11%) Dropwizard
6 21 (46.67%) React
7 20 (44.44%) Hystrix
7 20 (44.44%) Play Framework
7 20 (44.44%) Scalatra
8 7 (15.56%) CSS3
9 6 (13.33%) RESTful
10 5 (11.11%) .NET
10 5 (11.11%) REST
10 5 (11.11%) Spring
11 4 (8.89%) jQuery
12 3 (6.67%) Backbone.js
12 3 (6.67%) Guice
12 3 (6.67%) Node.js
12 3 (6.67%) OAuth
Miscellaneous
1 3 (6.67%) Cloud Native
1 3 (6.67%) Public Cloud
1 3 (6.67%) User Experience
2 2 (4.44%) Derivative
3 1 (2.22%) Computer Science
3 1 (2.22%) Fintech
3 1 (2.22%) Life Science
3 1 (2.22%) Virtual Team
Operating Systems
1 6 (13.33%) Linux
2 3 (6.67%) CoreOS
3 1 (2.22%) Windows
Processes & Methodologies
1 43 (95.56%) Agile Software Development
2 36 (80.00%) TDD
3 33 (73.33%) BDD
4 32 (71.11%) Continuous Integration
5 30 (66.67%) Scrum
6 28 (62.22%) Kanban
7 26 (57.78%) Software Engineering
7 26 (57.78%) Test Automation
8 24 (53.33%) SOA
8 24 (53.33%) SOLID
9 23 (51.11%) Domain-Driven Design
9 23 (51.11%) Front End Development
9 23 (51.11%) MVC
9 23 (51.11%) Pair Programming
9 23 (51.11%) Web Application Development
10 20 (44.44%) Digital Transformation Programme
10 20 (44.44%) Web Development
11 9 (20.00%) Analytics
12 7 (15.56%) Microservices
13 6 (13.33%) OO
Programming Languages
1 33 (73.33%) Java
2 31 (68.89%) JavaScript
3 26 (57.78%) Groovy
4 6 (13.33%) Scala
5 5 (11.11%) SQL
6 3 (6.67%) C
6 3 (6.67%) C#
6 3 (6.67%) Python
7 1 (2.22%) C++
Qualifications
1 4 (8.89%) Degree
2 2 (4.44%) CFA
Quality Assurance & Compliance
1 20 (44.44%) QA
System Software
1 3 (6.67%) Docker
2 1 (2.22%) Apache ZooKeeper
Systems Management
1 6 (13.33%) Kubernetes
2 3 (6.67%) Ansible
2 3 (6.67%) Docker Swarm
2 3 (6.67%) Puppet
2 3 (6.67%) Terraform
Vendors
1 20 (44.44%) New Relic
2 3 (6.67%) Marketo
2 3 (6.67%) Sitecore
3 2 (4.44%) Bloomberg