SOLID Principles
UK

The table below provides summary statistics for permanent job vacancies requiring SOLID skills. It includes a benchmarking guide to the annual salaries offered in vacancies that cited SOLID over the 6 months leading up to 22 May 2025, comparing them to the same period in the previous two years.

6 months to
22 May 2025
Same period 2024 Same period 2023
Rank 503 362 307
Rank change year-on-year -141 -55 -20
Permanent jobs citing SOLID 213 766 1,104
As % of all permanent jobs advertised in the UK 0.39% 0.77% 1.12%
As % of the Processes & Methodologies category 0.41% 0.90% 1.17%
Number of salaries quoted 162 459 818
10th Percentile £47,750 £41,250 £47,500
25th Percentile £52,500 £50,000 £56,250
Median annual salary (50th Percentile) £61,250 £60,000 £66,250
Median % change year-on-year +2.08% -9.43% +14.22%
75th Percentile £73,750 £80,000 £86,250
90th Percentile £90,000 £94,000 £104,125
UK excluding London median annual salary £57,836 £56,334 £62,500
% change year-on-year +2.67% -9.87% +13.64%

All Process and Methodology Skills
UK

SOLID falls under the Processes and Methodologies category. For comparison with the information above, the following table provides summary statistics for all permanent job vacancies requiring process or methodology skills.

Permanent vacancies with a requirement for process or methodology skills 51,521 85,132 94,507
As % of all permanent jobs advertised in the UK 93.87% 85.14% 95.59%
Number of salaries quoted 25,367 59,760 55,710
10th Percentile £29,625 £29,078 £34,000
25th Percentile £41,250 £40,000 £45,000
Median annual salary (50th Percentile) £57,500 £55,000 £61,000
Median % change year-on-year +4.55% -9.84% +1.67%
75th Percentile £75,000 £72,500 £81,250
90th Percentile £97,500 £92,500 £100,000
UK excluding London median annual salary £51,645 £50,000 £55,000
% change year-on-year +3.29% -9.09% +4.76%

SOLID
Job Vacancy Trend

Job postings citing SOLID as a proportion of all IT jobs advertised.

Job vacancy trend for SOLID in the UK

SOLID
Salary Trend

3-month moving average salary quoted in jobs citing SOLID.

Salary trend for SOLID in the UK

SOLID
Salary Histogram

Salary distribution for jobs citing SOLID over the 6 months to 22 May 2025.

Salary histogram for SOLID in the UK

SOLID
Top 16 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing SOLID within the UK over the 6 months to 22 May 2025. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Jobs
England -141 197 £62,500 +4.17% 578
Work from Home +47 132 £62,500 +8.70% 343
UK excluding London -136 128 £57,836 +2.67% 530
London +43 80 £72,500 -9.38% 110
South East -31 42 £57,500 -4.17% 165
North of England -56 39 £57,836 +0.58% 124
North West -87 30 £57,836 -7.46% 76
South West +42 18 £67,500 +22.73% 61
Scotland +102 10 £55,750 +1.36% 21
Midlands -50 10 £67,500 +35.00% 80
West Midlands +44 9 £67,500 +19.82% 42
North East +40 6 £55,000 -0.31% 9
East of England +32 6 £52,500 -12.63% 78
Yorkshire +47 3 £85,253 +48.27% 40
Wales +36 3 £50,000 +11.11% 11
East Midlands -52 1 £42,500 -5.56% 33

SOLID
Co-occurring Skills and Capabilities by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 7 (3.29%) IIS
1 7 (3.29%) Microsoft Exchange
2 3 (1.41%) CMS
2 3 (1.41%) WordPress
3 1 (0.47%) Oracle SOA Suite
Applications
1 8 (3.76%) Chatbot
2 2 (0.94%) MS Visio
3 1 (0.47%) Microsoft Excel
Cloud Services
1 65 (30.52%) AWS
2 52 (24.41%) Azure
3 28 (13.15%) GitHub
4 26 (12.21%) GCP
5 23 (10.80%) SaaS
6 16 (7.51%) Azure DevOps
7 15 (7.04%) GitHub Actions
8 11 (5.16%) Serverless
9 5 (2.35%) Amazon EC2
9 5 (2.35%) Amazon ElastiCache
9 5 (2.35%) Amazon S3
9 5 (2.35%) Azure Service Bus
9 5 (2.35%) CloudFront
9 5 (2.35%) Route 53
10 3 (1.41%) Azure Functions
10 3 (1.41%) Datadog
11 2 (0.94%) Azure Monitor
11 2 (0.94%) Power Platform
12 1 (0.47%) Azure Cosmos DB
12 1 (0.47%) Azure Storage
Communications & Networking
1 3 (1.41%) Internet
2 2 (0.94%) Broadband
3 1 (0.47%) Ethernet
Database & Business Intelligence
1 41 (19.25%) SQL Server
2 16 (7.51%) MongoDB
2 16 (7.51%) MySQL
2 16 (7.51%) PostgreSQL
3 15 (7.04%) NoSQL
4 11 (5.16%) Relational Database
5 7 (3.29%) Data Hub
5 7 (3.29%) SQL CLR
6 6 (2.82%) Redis
7 5 (2.35%) DocumentDB
8 4 (1.88%) Elasticsearch
9 2 (0.94%) Azure SQL Database
9 2 (0.94%) Couchbase
9 2 (0.94%) MS Access
9 2 (0.94%) SQL Server Integration Services
10 1 (0.47%) Data Lake
10 1 (0.47%) Power BI
10 1 (0.47%) SQL Server Reporting Services
10 1 (0.47%) SQLite
10 1 (0.47%) Tableau
Development Applications
1 44 (20.66%) Git
2 14 (6.57%) Jenkins
3 12 (5.63%) Gradle
4 9 (4.23%) SonarQube
5 6 (2.82%) NUnit
6 5 (2.35%) JUnit
6 5 (2.35%) Maven
7 4 (1.88%) GitLab
7 4 (1.88%) Octopus Deploy
7 4 (1.88%) PHPUnit
7 4 (1.88%) TeamCity
7 4 (1.88%) Visual Studio
8 3 (1.41%) Jasmine
8 3 (1.41%) Mocha
8 3 (1.41%) Mockito
8 3 (1.41%) Selenium
9 2 (0.94%) FitNesse
9 2 (0.94%) Moq
9 2 (0.94%) SpecFlow
9 2 (0.94%) Team Foundation Server
General
1 71 (33.33%) Social Skills
2 36 (16.90%) Finance
2 36 (16.90%) Games
3 24 (11.27%) Inclusion and Diversity
4 13 (6.10%) Public Sector
5 12 (5.63%) Aviation
6 11 (5.16%) Banking
7 10 (4.69%) Analytical Skills
8 8 (3.76%) Back Office
8 8 (3.76%) Influencing Skills
9 6 (2.82%) Marketing
9 6 (2.82%) Retail
10 5 (2.35%) Retail Banking
11 2 (0.94%) Investment Banking
11 2 (0.94%) Law
12 1 (0.47%) Automotive
12 1 (0.47%) Electronics
12 1 (0.47%) Manufacturing
12 1 (0.47%) Publishing
12 1 (0.47%) Telecoms
Job Titles
1 109 (51.17%) Developer
2 67 (31.46%) Lead
3 63 (29.58%) Senior
4 53 (24.88%) Software Engineer
5 38 (17.84%) Senior Developer
6 31 (14.55%) .NET Developer
7 25 (11.74%) Senior Software Engineer
8 21 (9.86%) iOS Developer
9 18 (8.45%) C# Developer
10 16 (7.51%) Lead Developer
10 16 (7.51%) Lead Software Engineer
11 15 (7.04%) Lead Systems Engineer
11 15 (7.04%) Systems Engineer
12 14 (6.57%) C# .NET Developer
12 14 (6.57%) PHP Developer
13 11 (5.16%) Senior .NET Developer
13 11 (5.16%) Technical Leader
14 10 (4.69%) Java Engineer
14 10 (4.69%) Java Software Engineer
14 10 (4.69%) PHP Software Engineer
Libraries, Frameworks & Software Standards
1 88 (41.31%) .NET
2 57 (26.76%) RESTful
3 52 (24.41%) React
4 35 (16.43%) .NET Core
5 31 (14.55%) AngularJS
6 30 (14.08%) .NET Framework
7 29 (13.62%) CSS
8 23 (10.80%) HTML
9 22 (10.33%) Spring
10 21 (9.86%) Entity Framework
11 17 (7.98%) Kafka
11 17 (7.98%) Web Services
12 16 (7.51%) ASP.NET
12 16 (7.51%) Vue
13 15 (7.04%) Node.js
14 13 (6.10%) REST
15 12 (5.63%) jQuery
16 11 (5.16%) Dapper ORM
16 11 (5.16%) React Native
17 10 (4.69%) GraphQL
Miscellaneous
1 27 (12.68%) Mobile App
2 25 (11.74%) Cloud Native
3 20 (9.39%) Management Information System
4 18 (8.45%) Legacy Systems
5 17 (7.98%) Greenfield Project
6 12 (5.63%) Mobile Games
7 7 (3.29%) Private Cloud
7 7 (3.29%) Team-Oriented Environment
8 5 (2.35%) Distributed Applications
9 4 (1.88%) Data Centre
9 4 (1.88%) N-Tier
9 4 (1.88%) Product Ownership
10 3 (1.41%) Self-Motivation
11 2 (0.94%) Distributed Systems
11 2 (0.94%) Legacy Applications
11 2 (0.94%) Market Risk
12 1 (0.47%) Foreign Exchange (FX)
12 1 (0.47%) Learning Management System
12 1 (0.47%) NHS
12 1 (0.47%) Online Banking
Operating Systems
1 27 (12.68%) Apple iOS
2 15 (7.04%) Android
3 8 (3.76%) Windows
4 7 (3.29%) Windows Server
5 5 (2.35%) Linux
Processes & Methodologies
1 147 (69.01%) Agile
2 111 (52.11%) Software Engineering
3 68 (31.92%) TDD
4 66 (30.99%) Design Patterns
5 62 (29.11%) Mentoring
5 62 (29.11%) Microservices
6 55 (25.82%) DevOps
7 52 (24.41%) CI/CD
8 51 (23.94%) Unit Testing
9 48 (22.54%) Clean Code
9 48 (22.54%) Problem-Solving
10 37 (17.37%) E-Commerce
11 29 (13.62%) Technical Leadership
11 29 (13.62%) Test Automation
12 27 (12.68%) Computer Science
12 27 (12.68%) Containerisation
12 27 (12.68%) Line Management
13 24 (11.27%) UML
14 23 (10.80%) iOS Development
14 23 (10.80%) Roadmaps
Programming Languages
1 86 (40.38%) C#
2 50 (23.47%) Java
3 48 (22.54%) JavaScript
4 39 (18.31%) SQL
5 34 (15.96%) PHP
5 34 (15.96%) TypeScript
6 23 (10.80%) Python
6 23 (10.80%) Swift
7 16 (7.51%) C
8 15 (7.04%) Kotlin
9 9 (4.23%) Objective-C
10 7 (3.29%) Go
10 7 (3.29%) Ruby
11 4 (1.88%) PowerShell
12 3 (1.41%) Bash
12 3 (1.41%) VB.NET
13 2 (0.94%) C++
13 2 (0.94%) MATLAB
13 2 (0.94%) Scala
13 2 (0.94%) T-SQL
Qualifications
1 47 (22.07%) Degree
2 24 (11.27%) Computer Science Degree
3 22 (10.33%) SC Cleared
3 22 (10.33%) Security Cleared
4 15 (7.04%) HND
5 5 (2.35%) AWS Certification
5 5 (2.35%) AWS Certified Solutions Architect
6 2 (0.94%) Numerate Degree
7 1 (0.47%) BPSS Clearance
7 1 (0.47%) DBS Check
7 1 (0.47%) ISEB
7 1 (0.47%) ISTQB
7 1 (0.47%) Master's Degree
Quality Assurance & Compliance
1 46 (21.60%) QA
2 2 (0.94%) ISO/IEC 27001
2 2 (0.94%) NCSC
3 1 (0.47%) Accessibility
3 1 (0.47%) HL7
System Software
1 32 (15.02%) Docker
2 16 (7.51%) Virtual Machines
3 7 (3.29%) VMware Infrastructure
Systems Management
1 35 (16.43%) Kubernetes
2 7 (3.29%) Prometheus
3 6 (2.82%) Terraform
4 5 (2.35%) Argo
5 4 (1.88%) Grafana
6 2 (0.94%) Control-M
7 1 (0.47%) Kibana
7 1 (0.47%) logstash
Vendors
1 21 (9.86%) Microsoft
2 12 (5.63%) New Relic
3 8 (3.76%) Google
4 7 (3.29%) VMware
5 4 (1.88%) Oracle
5 4 (1.88%) Salesforce
6 3 (1.41%) Twitter
7 2 (0.94%) DevExpress
8 1 (0.47%) Apple
8 1 (0.47%) Optimizely
8 1 (0.47%) SAP
8 1 (0.47%) Telerik