Period
to 6 May 2021

The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for SOLID skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited SOLID over the 6 months to 6 May 2021 with a comparison to the same period in the previous 2 years.

SOLID Principles
Central London > City of London
6 months to
6 May 2021
Same period 2020 Same period 2019
Rank 90 184 173
Rank change year-on-year +94 -11 +58
Permanent jobs citing SOLID 155 104 168
As % of all permanent jobs advertised in the City of London 3.10% 1.36% 1.66%
As % of the Processes & Methodologies category 3.25% 1.44% 1.78%
Number of salaries quoted 143 98 156
10th Percentile £65,000 £45,000 £35,250
25th Percentile £69,000 £51,250 £52,188
Median annual salary (50th Percentile) £85,000 £65,000 £67,500
Median % change year-on-year +30.77% -3.70% +3.85%
75th Percentile £88,750 £85,000 £82,500
90th Percentile " £93,750 £90,000
Central London median annual salary £85,000 £72,500 £70,000
% change year-on-year +17.24% +3.57% +12.00%

SOLID 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 4,765 7,225 9,427
As % of all permanent IT jobs advertised in the City of London 95.28% 94.24% 93.12%
Number of salaries quoted 4,239 6,320 8,425
10th Percentile £43,750 £40,000 £36,600
25th Percentile £55,000 £51,250 £49,750
Median annual salary (50th Percentile) £72,500 £67,500 £65,000
Median % change year-on-year +7.41% +3.85% +4.00%
75th Percentile £90,000 £85,000 £82,500
90th Percentile £107,500 £100,000 £97,500
Central London median annual salary £70,000 £67,500 £65,000
% change year-on-year +3.70% +3.85% +8.33%

SOLID
Job Vacancy Trend in the City of London

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

Job vacancy trend for SOLID in the City of London

SOLID
Salary Trend in the City of London

3-month moving average salary quoted in jobs citing SOLID in the City of London.

Salary trend for SOLID in the City of London

SOLID
Salary Histogram in the City of London

Salary distribution for jobs citing SOLID in the City of London over the 6 months to 6 May 2021.

Salary histogram for SOLID in the City of London

For the 6 months to 6 May 2021, IT 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 permanent job ads across the City of London region with a requirement for SOLID.

1 138 (89.03%) .NET
2 133 (85.81%) C#
3 119 (76.77%) Agile Software Development
4 116 (74.84%) Azure
4 116 (74.84%) .NET Core
5 112 (72.26%) Microservices
6 111 (71.61%) DevOps
6 111 (71.61%) OO
7 110 (70.97%) SQL
8 103 (66.45%) JavaScript
9 96 (61.94%) CSS
10 95 (61.29%) Web Services
10 95 (61.29%) React
11 94 (60.65%) SQL Server
12 93 (60.00%) MVC
13 92 (59.35%) Continuous Integration
14 85 (54.84%) jQuery
14 85 (54.84%) Test Automation
14 85 (54.84%) ASP.NET Web API
15 84 (54.19%) Twitter Bootstrap
16 83 (53.55%) Entity Framework
16 83 (53.55%) Azure Service Bus
17 82 (52.90%) Deployment Automation
17 82 (52.90%) UML
17 82 (52.90%) SOA
18 81 (52.26%) N-Tier
18 81 (52.26%) .NET Framework
19 80 (51.61%) SharePoint
20 79 (50.97%) Azure Service Fabric
20 79 (50.97%) Azure App Service

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 80 (51.61%) SharePoint
2 7 (4.52%) Moodle
3 6 (3.87%) Elasticsearch
4 4 (2.58%) Apache Spark
5 2 (1.29%) IIS
6 1 (0.65%) Confluence
Applications
1 3 (1.94%) InVision
1 3 (1.94%) Sketch
2 1 (0.65%) Microsoft Office
Business Applications
1 78 (50.32%) Dynamics CRM
2 6 (3.87%) Sparx Enterprise Architect
3 1 (0.65%) Payment Gateway
Cloud Services
1 116 (74.84%) Azure
2 83 (53.55%) Azure Service Bus
3 79 (50.97%) Azure App Service
3 79 (50.97%) Azure Service Fabric
4 74 (47.74%) PaaS
5 69 (44.52%) Azure Key Vault
6 65 (41.94%) Azure Active Directory
6 65 (41.94%) Azure Storage
7 31 (20.00%) Azure Functions
7 31 (20.00%) Serverless
8 20 (12.90%) AWS
9 15 (9.68%) NuGet
10 14 (9.03%) Azure Event Grid
11 5 (3.23%) Dynamics 365
12 3 (1.94%) Azure Logic Apps
12 3 (1.94%) Power Automate
12 3 (1.94%) Power Platform
12 3 (1.94%) PowerApps
13 2 (1.29%) npm
14 1 (0.65%) Azure Cosmos DB
Communications & Networking
1 1 (0.65%) FTP
1 1 (0.65%) Network Security
Database & Business Intelligence
1 94 (60.65%) SQL Server
2 38 (24.52%) NoSQL
3 20 (12.90%) Azure SQL Database
4 11 (7.10%) MySQL
5 7 (4.52%) Big Data
6 6 (3.87%) MongoDB
7 3 (1.94%) Amazon DynamoDB
7 3 (1.94%) Data Mining
7 3 (1.94%) PostgreSQL
7 3 (1.94%) Power BI
7 3 (1.94%) SQL Server Integration Services
7 3 (1.94%) SQL Server Reporting Services
8 2 (1.29%) Relational Database
8 2 (1.29%) SQL Server 2017
9 1 (0.65%) Flink
9 1 (0.65%) Parquet
9 1 (0.65%) RDBMS
9 1 (0.65%) Redis
Development Applications
1 76 (49.03%) Team Foundation Server
2 75 (48.39%) Visual Studio Team System
3 14 (9.03%) NUnit
4 10 (6.45%) Git (software)
5 9 (5.81%) Octopus Deploy
5 9 (5.81%) TeamCity
6 8 (5.16%) Rhino Mocks
7 5 (3.23%) JIRA
8 4 (2.58%) Jenkins
8 4 (2.58%) Selenium
9 3 (1.94%) Cypress.io
9 3 (1.94%) Moq
9 3 (1.94%) PostCSS
9 3 (1.94%) Visual Studio
10 1 (0.65%) Artifactory
10 1 (0.65%) jspm
10 1 (0.65%) Maven
10 1 (0.65%) Protractor
10 1 (0.65%) Sonatype Nexus
10 1 (0.65%) SQL Server Management Studio (SSMS)
General
1 51 (32.90%) Analytical Skills
2 29 (18.71%) Social Skills
3 20 (12.90%) Finance
4 6 (3.87%) Online Betting
5 2 (1.29%) Back Office
5 2 (1.29%) Front Office
6 1 (0.65%) Banking
6 1 (0.65%) Investment Banking
Job Titles
1 122 (78.71%) Developer
2 90 (58.06%) C# Developer
3 77 (49.68%) Azure Developer
4 69 (44.52%) Senior Developer
5 66 (42.58%) Senior C# Developer
6 56 (36.13%) .NET Developer
7 43 (27.74%) C# .NET Developer
8 41 (26.45%) Senior .NET Developer
8 41 (26.45%) Senior C# .NET Developer
9 40 (25.81%) SQL Developer
10 39 (25.16%) ASP.NET MVC Developer
10 39 (25.16%) Senior SQL Developer
11 18 (11.61%) Integration Developer
12 15 (9.68%) DevOps Developer
13 14 (9.03%) Digital Developer
13 14 (9.03%) Senior DevOps
14 13 (8.39%) Full Stack Developer
15 12 (7.74%) Lead Developer
16 9 (5.81%) Lead .NET Developer
17 8 (5.16%) Software Engineer
Libraries, Frameworks & Software Standards
1 138 (89.03%) .NET
2 116 (74.84%) .NET Core
3 96 (61.94%) CSS
4 95 (61.29%) React
4 95 (61.29%) Web Services
5 85 (54.84%) ASP.NET Web API
5 85 (54.84%) jQuery
6 84 (54.19%) Twitter Bootstrap
7 83 (53.55%) Entity Framework
8 81 (52.26%) .NET Framework
9 21 (13.55%) AngularJS
10 19 (12.26%) REST
11 13 (8.39%) HTML
12 11 (7.10%) Node.js
13 10 (6.45%) ASP.NET
13 10 (6.45%) JSON
14 8 (5.16%) RESTful
14 8 (5.16%) Spring
15 7 (4.52%) Kafka
15 7 (4.52%) Vue.js
Miscellaneous
1 81 (52.26%) N-Tier
2 39 (25.16%) Reinsurance
3 16 (10.32%) User Experience
4 8 (5.16%) Hybrid Cloud
5 6 (3.87%) Social Media
6 3 (1.94%) Housing Association
7 2 (1.29%) Data Centre
8 1 (0.65%) Algorithms
8 1 (0.65%) Data Structures
8 1 (0.65%) Equities
8 1 (0.65%) Greenfield Project
8 1 (0.65%) Public Cloud
Operating Systems
1 3 (1.94%) Android
1 3 (1.94%) Apple iOS
2 2 (1.29%) Linux
Processes & Methodologies
1 119 (76.77%) Agile Software Development
2 112 (72.26%) Microservices
3 111 (71.61%) DevOps
3 111 (71.61%) OO
4 93 (60.00%) MVC
5 92 (59.35%) Continuous Integration
6 85 (54.84%) Test Automation
7 82 (52.90%) Deployment Automation
7 82 (52.90%) SOA
7 82 (52.90%) UML
8 78 (50.32%) CRM
8 78 (50.32%) Don't repeat yourself (DRY)
9 65 (41.94%) Mentoring
9 65 (41.94%) Migration
10 44 (28.39%) TDD
11 25 (16.13%) BDD
12 20 (12.90%) API Integration
12 20 (12.90%) Computer Science
12 20 (12.90%) Software Engineering
12 20 (12.90%) Systems Analysis
Programming Languages
1 133 (85.81%) C#
2 110 (70.97%) SQL
3 103 (66.45%) JavaScript
4 77 (49.68%) T-SQL
5 72 (46.45%) PowerShell
6 10 (6.45%) Java
6 10 (6.45%) TypeScript
7 8 (5.16%) PHP
8 5 (3.23%) Java 8
9 4 (2.58%) Scala
10 3 (1.94%) ES6
10 3 (1.94%) ES7
10 3 (1.94%) Kotlin
10 3 (1.94%) Python
11 2 (1.29%) Bash Shell
11 2 (1.29%) Go
12 1 (0.65%) Haskell
12 1 (0.65%) R
12 1 (0.65%) VB.NET
12 1 (0.65%) VBA
Qualifications
1 68 (43.87%) Degree
2 20 (12.90%) Computer Science Degree
3 3 (1.94%) SANS
Quality Assurance & Compliance
1 6 (3.87%) QA
2 3 (1.94%) Data Quality
2 3 (1.94%) WCAG
3 1 (0.65%) PSD2
System Software
1 23 (14.84%) Docker
Systems Management
1 74 (47.74%) Terraform
2 65 (41.94%) Opscode Chef
3 21 (13.55%) Kubernetes
4 3 (1.94%) Ansible
5 1 (0.65%) MIIS
Vendors
1 77 (49.68%) Nintex
2 7 (4.52%) Microsoft
3 6 (3.87%) Salesforce.com
3 6 (3.87%) Sparx
4 2 (1.29%) Charles River
5 1 (0.65%) Fidessa
5 1 (0.65%) VMware
5 1 (0.65%) Xamarin