Period
to 20 November 2017

The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for Refactoring skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Refactoring over the 6 months to 20 November 2017 with a comparison to the same period in the previous 2 years.

Refactoring
Central London > City of London
6 months to
20 Nov 2017
Same period 2016 Same period 2015
Rank 264 325 382
Rank change year-on-year +61 +57 +19
Permanent jobs citing Refactoring 56 20 34
As % of all permanent IT jobs advertised in the City of London 0.55% 0.17% 0.20%
As % of the Processes & Methodologies category 0.61% 0.19% 0.22%
Number of salaries quoted 45 19 36
City of London median annual salary £62,500 £65,000 £75,000
Median salary % change year-on-year -3.85% -13.33% +41.51%
10th Percentile £45,000 £42,500 £54,375
90th Percentile £87,500 £95,500 £102,500
Central London median annual salary £60,000 £65,000 £65,000
% change year-on-year -7.69% - +21.50%

Refactoring is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Permanent vacancies with a requirement for process or methodology skills 9200 10313 15272
As % of all permanent IT jobs advertised in the City of London 90.13% 89.43% 89.11%
Number of salaries quoted 8307 9399 13239
City of London median annual salary £60,000 £60,000 £57,500
Median salary % change year-on-year - +4.35% +4.55%
10th Percentile £36,250 £35,000 £33,750
90th Percentile £93,950 £90,000 £87,500
Central London median annual salary £60,000 £57,500 £57,500
% change year-on-year +4.35% - +4.55%

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
Salary Trend in the City of London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing Refactoring in the City of London.

Salary trend for Refactoring in the City of London

Refactoring
Salary Histogram in the City of London

The salary distribution of IT jobs citing Refactoring in the City of London over the 6 months to 20 November 2017.

Salary histogram for Refactoring in the City of London

For the 6 months to 20 November 2017, IT jobs citing Refactoring also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the City of London region with a requirement for Refactoring.

1 42 (75.00%) Finance
2 36 (64.29%) TDD
3 33 (58.93%) SQL
4 29 (51.79%) SQL Server
5 26 (46.43%) Agile Software Development
6 24 (42.86%) .NET
6 24 (42.86%) JavaScript
7 23 (41.07%) AngularJS
7 23 (41.07%) Relational Database
8 20 (35.71%) T-SQL
9 19 (33.93%) C#
10 18 (32.14%) C++
11 17 (30.36%) RDBMS
11 17 (30.36%) Algorithms
11 17 (30.36%) BDD
12 15 (26.79%) User Experience
12 15 (26.79%) Windows
13 14 (25.00%) Continuous Integration
14 13 (23.21%) Software Engineering
14 13 (23.21%) Java
15 12 (21.43%) HTML
15 12 (21.43%) CSS
15 12 (21.43%) Foreign Exchange (FX)
15 12 (21.43%) Microservices
15 12 (21.43%) HTML5
15 12 (21.43%) Git (software)
16 11 (19.64%) Data Structures
16 11 (19.64%) Multithreading
17 10 (17.86%) Marketing
17 10 (17.86%) Selenium

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 (10.71%) CMS
2 5 (8.93%) EPiServer
2 5 (8.93%) Sitecore CMS
3 3 (5.36%) Apache
3 3 (5.36%) Elasticsearch
4 1 (1.79%) Apache Spark
4 1 (1.79%) nginx
Applications
1 3 (5.36%) Photoshop
Business Applications
1 10 (17.86%) MetaTrader
2 5 (8.93%) Eloqua
3 2 (3.57%) Markit EDM
Cloud Services
1 8 (14.29%) Amazon AWS
1 8 (14.29%) Microsoft Azure
2 6 (10.71%) npm
3 3 (5.36%) GitHub
4 2 (3.57%) SaaS
Database & Business Intelligence
1 29 (51.79%) SQL Server
2 23 (41.07%) Relational Database
3 17 (30.36%) RDBMS
4 8 (14.29%) NoSQL
5 7 (12.50%) MongoDB
5 7 (12.50%) SQL Server Integration Services
6 6 (10.71%) Data Warehouse
7 5 (8.93%) Couchbase
7 5 (8.93%) Data Mining
7 5 (8.93%) Power BI
7 5 (8.93%) SQL Server 2008
7 5 (8.93%) SQL Server Analysis Services
8 4 (7.14%) Redis
9 3 (5.36%) Azure SQL Database
9 3 (5.36%) DocumentDB
9 3 (5.36%) PostgreSQL
9 3 (5.36%) Spatial Data
10 2 (3.57%) Apache Cassandra
10 2 (3.57%) Hadoop
10 2 (3.57%) MySQL
Development Applications
1 12 (21.43%) Git (software)
2 10 (17.86%) Selenium
2 10 (17.86%) Visual Studio
3 8 (14.29%) Team Foundation Server
4 6 (10.71%) gulp
4 6 (10.71%) Protractor
5 5 (8.93%) Bower
5 5 (8.93%) JIRA
5 5 (8.93%) Karma Test Runner
5 5 (8.93%) Mocha
5 5 (8.93%) Octopus Deploy
5 5 (8.93%) Sinon.JS
5 5 (8.93%) TeamCity
6 4 (7.14%) Jenkins
6 4 (7.14%) Subversion
7 3 (5.36%) Jasmine
7 3 (5.36%) Maven
7 3 (5.36%) MSTest
7 3 (5.36%) NUnit
8 2 (3.57%) JMeter
General
1 42 (75.00%) Finance
2 10 (17.86%) Marketing
3 8 (14.29%) Financial Institution
4 6 (10.71%) Advertising
5 3 (5.36%) Banking
5 3 (5.36%) Front Office
5 3 (5.36%) Retail
6 1 (1.79%) Electronics
6 1 (1.79%) Games
6 1 (1.79%) Legal
Job Titles
1 47 (83.93%) Developer
2 15 (26.79%) C++ Developer
2 15 (26.79%) Lead Developer
3 12 (21.43%) C# Developer
4 10 (17.86%) C++/C# Developer
5 8 (14.29%) Front End Developer (Client-Side Developer)
6 7 (12.50%) Lead C# Developer
6 7 (12.50%) Senior Developer
6 7 (12.50%) SQL Developer
7 5 (8.93%) Database Developer
7 5 (8.93%) Java Developer
7 5 (8.93%) Senior Front-End Developer
7 5 (8.93%) SQL Database Developer
8 4 (7.14%) Designer
8 4 (7.14%) Digital Developer
8 4 (7.14%) Full Stack Developer
8 4 (7.14%) UI Designer
8 4 (7.14%) UI Developer
9 3 (5.36%) Senior UI/UX Developer
9 3 (5.36%) UI/UX Developer
Libraries, Frameworks & Software Standards
1 24 (42.86%) .NET
2 23 (41.07%) AngularJS
3 12 (21.43%) CSS
3 12 (21.43%) HTML
3 12 (21.43%) HTML5
4 10 (17.86%) Boost C++ Libraries
5 9 (16.07%) jQuery
5 9 (16.07%) LESS
5 9 (16.07%) Sass
6 8 (14.29%) CSS3
6 8 (14.29%) Twitter Bootstrap
7 7 (12.50%) React
7 7 (12.50%) Vue (Vue.js)
8 6 (10.71%) Backbone.js
8 6 (10.71%) Ember.js
8 6 (10.71%) Gherkin
9 5 (8.93%) JSON
9 5 (8.93%) RESTful
9 5 (8.93%) STL
9 5 (8.93%) XML
Miscellaneous
1 17 (30.36%) Algorithms
2 15 (26.79%) User Experience
3 12 (21.43%) Foreign Exchange (FX)
4 11 (19.64%) Data Structures
5 6 (10.71%) Cloud Native
5 6 (10.71%) Fintech
5 6 (10.71%) Greenfield Project
6 4 (7.14%) Fixed Income
6 4 (7.14%) Hedge funds
7 3 (5.36%) Equities
8 2 (3.57%) Computer Science
9 1 (1.79%) Analytical Skills
9 1 (1.79%) Derivative
9 1 (1.79%) Digital Media
9 1 (1.79%) e-Learning
9 1 (1.79%) Embedded Systems
9 1 (1.79%) Enterprise Software
9 1 (1.79%) Equity Derivative
9 1 (1.79%) Linux Command Line
9 1 (1.79%) Tandem
Operating Systems
1 15 (26.79%) Windows
2 4 (7.14%) Linux
3 2 (3.57%) Android
4 1 (1.79%) Apple iOS
Processes & Methodologies
1 36 (64.29%) TDD
2 26 (46.43%) Agile Software Development
3 17 (30.36%) BDD
4 14 (25.00%) Continuous Integration
5 13 (23.21%) Software Engineering
6 12 (21.43%) Microservices
7 11 (19.64%) Multithreading
8 9 (16.07%) ETL
8 9 (16.07%) Responsive Web Design
9 8 (14.29%) Open Source
10 7 (12.50%) MVC
10 7 (12.50%) OO
11 6 (10.71%) Analytics
11 6 (10.71%) Asset Management
11 6 (10.71%) Content Management
11 6 (10.71%) Continuous Improvement
11 6 (10.71%) DevOps
11 6 (10.71%) Enterprise Content Management
11 6 (10.71%) Test Automation
11 6 (10.71%) Web Application Development
Programming Languages
1 33 (58.93%) SQL
2 24 (42.86%) JavaScript
3 20 (35.71%) T-SQL
4 19 (33.93%) C#
5 18 (32.14%) C++
6 13 (23.21%) Java
7 6 (10.71%) ES6
7 6 (10.71%) Python
8 5 (8.93%) C
8 5 (8.93%) Data Analysis Expressions (DAX)
8 5 (8.93%) PHP
8 5 (8.93%) R
9 4 (7.14%) Scala
9 4 (7.14%) TypeScript
10 2 (3.57%) Clojure
10 2 (3.57%) Kotlin
11 1 (1.79%) Apex Code
11 1 (1.79%) Ruby
Qualifications
1 8 (14.29%) Degree
2 1 (1.79%) Computer Science Degree
Quality Assurance & Compliance
1 2 (3.57%) QA
System Software
1 1 (1.79%) Docker
1 1 (1.79%) Firmware
1 1 (1.79%) VirtualBox
Systems Management
1 3 (5.36%) Ansible
2 2 (3.57%) Grafana
3 1 (1.79%) Puppet
Vendors
1 5 (8.93%) Marketo
1 5 (8.93%) Microsoft
1 5 (8.93%) Sitecore
2 2 (3.57%) Oracle
3 1 (1.79%) IBM
3 1 (1.79%) Salesforce.com
3 1 (1.79%) SAP
3 1 (1.79%) Zend