Period
to 21 November 2017

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 6 months to 21 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.

Refactoring
Central London > City of London
6 months to
21 Nov 2017
Same period 2016 Same period 2015
Rank 208 207 235
Rank change year-on-year -1 +28 +42
Contract jobs citing Refactoring 44 42 28
As % of all contract IT jobs advertised in the City of London 0.62% 0.63% 0.31%
As % of the Processes & Methodologies category 0.70% 0.72% 0.37%
Number of daily rates quoted 36 34 26
City of London median daily rate £550 £525 £450
Median daily rate % change year-on-year +4.76% +16.67% -
10th Percentile £463 £425 £322
90th Percentile £719 £588 £613
Central London median daily rate £550 £525 £450
% change year-on-year +4.76% +16.67% -4.00%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

Refactoring 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 6313 5815 7604
As % of all contract IT jobs advertised in the City of London 88.28% 87.40% 83.92%
Number of daily rates quoted 5012 4649 6043
City of London median daily rate £513 £475 £465
Median daily rate % change year-on-year +7.89% +2.15% +3.33%
10th Percentile £326 £313 £288
90th Percentile £688 £669 £650
Central London median daily rate £500 £475 £460
% change year-on-year +5.26% +3.26% +2.22%
Number of hourly rates quoted 59 53 74
City of London median hourly rate £20.00 £20.00 £21.13
Median hourly rate % change year-on-year - -5.33% +11.18%
10th Percentile £13.34 £13.75 £10.91
90th Percentile £30.90 £54.03 £45.15
Central London median hourly rate £20.25 £19.46 £21.00
% change year-on-year +4.06% -7.33% +16.70%

Refactoring
Job Vacancy Trend in the City of London

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

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 6 months to 21 November 2017.

Contractor daily rate histogram for Refactoring in the City of London

For the 6 months to 21 November 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 40 (90.91%) Agile Software Development
2 32 (72.73%) TDD
3 31 (70.45%) JavaScript
3 31 (70.45%) Continuous Integration
4 30 (68.18%) BDD
4 30 (68.18%) Java
5 28 (63.64%) Web Services
5 28 (63.64%) Pair Programming
5 28 (63.64%) Test Automation
6 27 (61.36%) Amazon AWS
6 27 (61.36%) Software Engineering
7 26 (59.09%) Domain-Driven Design
7 26 (59.09%) MongoDB
7 26 (59.09%) MVC
8 25 (56.82%) SOA
8 25 (56.82%) HTML
8 25 (56.82%) CSS
8 25 (56.82%) Front End Development
8 25 (56.82%) Dropwizard
9 24 (54.55%) Groovy
9 24 (54.55%) Git (software)
10 23 (52.27%) HTML5
10 23 (52.27%) Scrum
10 23 (52.27%) gulp
10 23 (52.27%) Web Application Development
11 21 (47.73%) Grunt
11 21 (47.73%) Scalatra
11 21 (47.73%) New Relic
11 21 (47.73%) SOLID
11 21 (47.73%) 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 4 (9.09%) CMS
1 4 (9.09%) EPiServer
2 2 (4.55%) Sitecore CMS
3 1 (2.27%) Apache
3 1 (2.27%) Apache Spark
3 1 (2.27%) JBoss
Business Applications
1 3 (6.82%) Endur
2 2 (4.55%) Eloqua
3 1 (2.27%) Markit EDM
Cloud Services
1 27 (61.36%) Amazon AWS
2 6 (13.64%) Microsoft Azure
3 4 (9.09%) Heroku
4 2 (4.55%) npm
Communications & Networking
1 4 (9.09%) DNS
1 4 (9.09%) FTP
1 4 (9.09%) HTTP
1 4 (9.09%) SSL
1 4 (9.09%) TCP/IP
Database & Business Intelligence
1 26 (59.09%) MongoDB
2 5 (11.36%) NoSQL
2 5 (11.36%) PostgreSQL
2 5 (11.36%) Relational Database
2 5 (11.36%) SQL Server
3 3 (6.82%) Apache Cassandra
3 3 (6.82%) InfluxDB
4 2 (4.55%) Couchbase
5 1 (2.27%) Big Data
5 1 (2.27%) Hadoop
5 1 (2.27%) MySQL
5 1 (2.27%) RDBMS
5 1 (2.27%) Redis
Development Applications
1 24 (54.55%) Git (software)
2 23 (52.27%) gulp
3 21 (47.73%) Grunt
3 21 (47.73%) IntelliJ
4 5 (11.36%) Team Foundation Server
5 4 (9.09%) Gradle
5 4 (9.09%) webpack
6 2 (4.55%) Bower
6 2 (4.55%) Karma Test Runner
6 2 (4.55%) Mocha
6 2 (4.55%) Protractor
6 2 (4.55%) Selenium
6 2 (4.55%) Sinon.JS
6 2 (4.55%) Visual Studio
7 1 (2.27%) Jenkins
7 1 (2.27%) Mercurial
7 1 (2.27%) Subversion
7 1 (2.27%) Travis CI
General
1 9 (20.45%) Finance
2 4 (9.09%) Banking
3 3 (6.82%) Back Office
3 3 (6.82%) Marketing
4 2 (4.55%) Advertising
5 1 (2.27%) Retail
Job Titles
1 37 (84.09%) Developer
2 19 (43.18%) Java Developer
3 10 (22.73%) Agile Developer
3 10 (22.73%) Agile Java Developer
4 5 (11.36%) JavaScript Developer
4 5 (11.36%) Lead Developer
5 4 (9.09%) Analyst
5 4 (9.09%) Analyst Developer
5 4 (9.09%) Architect
5 4 (9.09%) Front End Developer (Client-Side Developer)
5 4 (9.09%) HTML CSS Developer
5 4 (9.09%) HTML Developer
5 4 (9.09%) Platform Architect
5 4 (9.09%) Senior Developer
6 3 (6.82%) .NET Developer
6 3 (6.82%) C# .NET Developer
6 3 (6.82%) C# Developer
6 3 (6.82%) Endur Developer
6 3 (6.82%) OpenLink Developer
6 3 (6.82%) SQL Developer
Libraries, Frameworks & Software Standards
1 28 (63.64%) Web Services
2 25 (56.82%) CSS
2 25 (56.82%) Dropwizard
2 25 (56.82%) HTML
3 23 (52.27%) HTML5
4 21 (47.73%) Hystrix
4 21 (47.73%) Scalatra
5 20 (45.45%) AngularJS
5 20 (45.45%) Play Framework
6 16 (36.36%) React
7 7 (15.91%) REST
7 7 (15.91%) Spring
8 6 (13.64%) RESTful
8 6 (13.64%) SOAP
9 5 (11.36%) .NET
9 5 (11.36%) Spring Boot
9 5 (11.36%) XML
10 4 (9.09%) OAuth2
10 4 (9.09%) Ratpack
10 4 (9.09%) Twitter Bootstrap
Miscellaneous
1 4 (9.09%) Public Cloud
2 2 (4.55%) Cloud Native
2 2 (4.55%) User Experience
3 1 (2.27%) Derivative
3 1 (2.27%) Equities
3 1 (2.27%) Fintech
3 1 (2.27%) Fixed Income
3 1 (2.27%) Management Information System
3 1 (2.27%) Virtual Team
Operating Systems
1 5 (11.36%) Linux
2 4 (9.09%) CoreOS
3 2 (4.55%) Windows
Processes & Methodologies
1 40 (90.91%) Agile Software Development
2 32 (72.73%) TDD
3 31 (70.45%) Continuous Integration
4 30 (68.18%) BDD
5 28 (63.64%) Pair Programming
5 28 (63.64%) Test Automation
6 27 (61.36%) Software Engineering
7 26 (59.09%) Domain-Driven Design
7 26 (59.09%) MVC
8 25 (56.82%) Front End Development
8 25 (56.82%) SOA
9 23 (52.27%) Scrum
9 23 (52.27%) Web Application Development
10 21 (47.73%) Kanban
10 21 (47.73%) SOLID
10 21 (47.73%) Web Development
11 19 (43.18%) Digital Transformation Programme
12 10 (22.73%) Microservices
13 6 (13.64%) Analytics
14 5 (11.36%) Continuous Delivery
Programming Languages
1 31 (70.45%) JavaScript
2 30 (68.18%) Java
3 24 (54.55%) Groovy
4 6 (13.64%) SQL
5 4 (9.09%) C#
6 3 (6.82%) Clojure
6 3 (6.82%) Kotlin
7 2 (4.55%) C
7 2 (4.55%) Scala
7 2 (4.55%) TypeScript
8 1 (2.27%) C++
Qualifications
1 2 (4.55%) Degree
Quality Assurance & Compliance
1 21 (47.73%) QA
System Software
1 4 (9.09%) Docker
Systems Management
1 7 (15.91%) Ansible
2 4 (9.09%) Docker Swarm
2 4 (9.09%) Puppet
2 4 (9.09%) Terraform
3 3 (6.82%) Grafana
Vendors
1 21 (47.73%) New Relic
2 3 (6.82%) Microsoft
2 3 (6.82%) OpenLink
3 2 (4.55%) Marketo
3 2 (4.55%) Sitecore
4 1 (2.27%) hybris
4 1 (2.27%) Infragistics
4 1 (2.27%) Oracle