Period
to 18 November 2018

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for SOLID skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited SOLID over the 6 months to 18 November 2018 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.

SOLID Principles
Central London > City of London
6 months to
18 Nov 2018
Same period 2017 Same period 2016
Rank 202 171 207
Rank change year-on-year -31 +36 +12
Contract jobs citing SOLID 50 85 45
As % of all contract IT jobs advertised in the City of London 0.72% 1.20% 0.67%
As % of the Processes & Methodologies category 0.83% 1.34% 0.76%
Number of daily rates quoted 45 74 44
City of London median daily rate £500 £500 £450
Median daily rate % change year-on-year - +11.11% -2.70%
10th Percentile £425 £408 £319
90th Percentile £595 £584 £538
Central London median daily rate £500 £500 £449
% change year-on-year - +11.48% -1.70%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

SOLID 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 6,030 6,326 5,925
As % of all contract IT jobs advertised in the City of London 86.89% 89.31% 88.30%
Number of daily rates quoted 4,801 5,023 4,734
City of London median daily rate £510 £505 £475
Median daily rate % change year-on-year +0.99% +6.32% +2.70%
10th Percentile £325 £325 £313
90th Percentile £675 £688 £663
Central London median daily rate £500 £500 £475
% change year-on-year - +5.26% +5.56%
Number of hourly rates quoted 93 59 55
City of London median hourly rate £19.00 £20.00 £20.00
Median hourly rate % change year-on-year -5.00% - -
10th Percentile £13.31 £13.34 £12.15
90th Percentile £33.60 £30.90 £53.05
Central London median hourly rate £19.13 £20.00 £19.00
% change year-on-year -4.38% +5.26% -5.00%

SOLID
Job Vacancy Trend in the City of London

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

Job vacancy trend for SOLID in the City of London

SOLID
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 SOLID in the City of London.

Contractor daily rate trend for SOLID in the City of London

SOLID
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing SOLID in the City of London over the 6 months to 18 November 2018.

Contractor daily rate histogram for SOLID in the City of London

For the 6 months to 18 November 2018, IT contractor jobs citing SOLID also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the City of London region with a requirement for SOLID.

1 37 (74.00%) Agile Software Development
2 35 (70.00%) C#
3 33 (66.00%) .NET
3 33 (66.00%) TDD
4 31 (62.00%) Microsoft Azure
5 28 (56.00%) Microservices
6 20 (40.00%) MVC
6 20 (40.00%) ASP.NET Web API
7 16 (32.00%) SQL
7 16 (32.00%) Amazon AWS
8 15 (30.00%) BDD
8 15 (30.00%) ASP.NET
9 14 (28.00%) JavaScript
9 14 (28.00%) ASP.NET MVC
10 12 (24.00%) E-Commerce
10 12 (24.00%) Visual Studio Team System
11 11 (22.00%) REST
11 11 (22.00%) Software Engineering
11 11 (22.00%) CSS
11 11 (22.00%) SQL Server
11 11 (22.00%) Finance
11 11 (22.00%) Scrum
12 10 (20.00%) OO
12 10 (20.00%) Continuous Integration
12 10 (20.00%) Git (software)
12 10 (20.00%) SpecFlow
13 9 (18.00%) React
14 8 (16.00%) Gherkin
14 8 (16.00%) AngularJS
14 8 (16.00%) .NET Core

SOLID
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 3 (6.00%) Elasticsearch
2 2 (4.00%) IIS
2 2 (4.00%) NServiceBus
3 1 (2.00%) SharePoint
Business Applications
1 1 (2.00%) Dynamics CRM
Cloud Services
1 31 (62.00%) Microsoft Azure
2 16 (32.00%) Amazon AWS
3 6 (12.00%) Amazon SQS
3 6 (12.00%) Google Play
4 4 (8.00%) GitHub
5 2 (4.00%) AWS Lambda
5 2 (4.00%) Azure Functions
5 2 (4.00%) PaaS
5 2 (4.00%) Serverless
6 1 (2.00%) npm
Communications & Networking
1 1 (2.00%) SMS
Database & Business Intelligence
1 11 (22.00%) SQL Server
2 6 (12.00%) Relational Database
3 5 (10.00%) NoSQL
4 4 (8.00%) Redis
5 3 (6.00%) SQL Server 2012
6 2 (4.00%) Apache Cassandra
6 2 (4.00%) CouchDB
6 2 (4.00%) MySQL
6 2 (4.00%) PostgreSQL
6 2 (4.00%) SQL Server 2005
6 2 (4.00%) SQL Server 2008
7 1 (2.00%) Azure SQL Database
Development Applications
1 12 (24.00%) Visual Studio Team System
2 10 (20.00%) Git (software)
2 10 (20.00%) SpecFlow
3 8 (16.00%) Selenium
4 7 (14.00%) Octopus Deploy
5 6 (12.00%) Team Foundation Server
6 5 (10.00%) TeamCity
7 4 (8.00%) Jenkins
8 3 (6.00%) Android Studio
8 3 (6.00%) Genymotion
8 3 (6.00%) Gradle
9 2 (4.00%) SQL Server Management Studio (SSMS)
General
1 11 (22.00%) Finance
2 8 (16.00%) Financial Institution
3 2 (4.00%) Retail
4 1 (2.00%) Banking
4 1 (2.00%) Front Office
4 1 (2.00%) Investment Banking
Job Titles
1 45 (90.00%) Developer
2 22 (44.00%) .NET Developer
3 15 (30.00%) C# Developer
4 13 (26.00%) Senior Developer
5 12 (24.00%) C# .NET Developer
6 10 (20.00%) Azure Developer
7 6 (12.00%) Senior Software Developer
7 6 (12.00%) Software Developer
8 4 (8.00%) Senior .NET Developer
8 4 (8.00%) Xamarin Developer
9 3 (6.00%) Architect
9 3 (6.00%) Lead .NET Developer
9 3 (6.00%) Lead C# Developer
9 3 (6.00%) Lead Developer
9 3 (6.00%) Senior Xamarin Developer
9 3 (6.00%) Technical Architect
10 2 (4.00%) Analyst
10 2 (4.00%) Applications Developer
10 2 (4.00%) Java Developer
10 2 (4.00%) Software Engineer
Libraries, Frameworks & Software Standards
1 33 (66.00%) .NET
2 20 (40.00%) ASP.NET Web API
3 15 (30.00%) ASP.NET
4 14 (28.00%) ASP.NET MVC
5 11 (22.00%) CSS
5 11 (22.00%) REST
6 9 (18.00%) React
7 8 (16.00%) .NET Core
7 8 (16.00%) AngularJS
7 8 (16.00%) Gherkin
7 8 (16.00%) HTML
8 7 (14.00%) RESTful
8 7 (14.00%) Web Services
9 6 (12.00%) Node.js
10 5 (10.00%) .NET Framework
10 5 (10.00%) JSON
10 5 (10.00%) WinForms
11 4 (8.00%) Entity Framework
11 4 (8.00%) jQuery
11 4 (8.00%) RabbitMQ
Miscellaneous
1 6 (12.00%) Greenfield Project
2 5 (10.00%) Fintech
3 3 (6.00%) Computer Science
4 2 (4.00%) Enterprise Software
4 2 (4.00%) Grid Computing
4 2 (4.00%) Mobile App
4 2 (4.00%) N-Tier
4 2 (4.00%) Tandem
5 1 (2.00%) Algorithms
5 1 (2.00%) Analytical Skills
5 1 (2.00%) Blog
5 1 (2.00%) Data Structures
5 1 (2.00%) Swaptions
Operating Systems
1 7 (14.00%) Android
2 4 (8.00%) Apple iOS
3 3 (6.00%) Windows
4 1 (2.00%) Linux
Processes & Methodologies
1 37 (74.00%) Agile Software Development
2 33 (66.00%) TDD
3 28 (56.00%) Microservices
4 20 (40.00%) MVC
5 15 (30.00%) BDD
6 12 (24.00%) E-Commerce
7 11 (22.00%) Scrum
7 11 (22.00%) Software Engineering
8 10 (20.00%) Continuous Integration
8 10 (20.00%) OO
9 8 (16.00%) Release Management
10 7 (14.00%) Problem-Solving
11 5 (10.00%) Continuous Delivery
12 4 (8.00%) Deployment Automation
12 4 (8.00%) Pair Programming
12 4 (8.00%) SOA
12 4 (8.00%) Unit Testing
13 3 (6.00%) Configuration Management
13 3 (6.00%) Data Strategy
13 3 (6.00%) Technical Architecture
Programming Languages
1 35 (70.00%) C#
2 16 (32.00%) SQL
3 14 (28.00%) JavaScript
4 6 (12.00%) Java
5 5 (10.00%) VB.NET
6 4 (8.00%) Python
6 4 (8.00%) T-SQL
7 3 (6.00%) Kotlin
7 3 (6.00%) TypeScript
8 2 (4.00%) Go
8 2 (4.00%) PowerShell
8 2 (4.00%) Ruby
9 1 (2.00%) C
9 1 (2.00%) ES6
9 1 (2.00%) PHP
9 1 (2.00%) PHP 5
9 1 (2.00%) R
Qualifications
1 3 (6.00%) Degree
2 1 (2.00%) Computer Science Degree
Quality Assurance & Compliance
1 2 (4.00%) QA
System Software
1 4 (8.00%) Docker
Systems Management
1 2 (4.00%) Kubernetes
Vendors
1 6 (12.00%) Google
2 4 (8.00%) Apple
2 4 (8.00%) Microsoft
2 4 (8.00%) Xamarin
3 2 (4.00%) Atlassian
4 1 (2.00%) Nintex