SOLID Contracts in London

SOLID Principles
England > London

The table below provides summary statistics for contract job vacancies advertised in London requiring SOLID skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited SOLID over the 6 months leading up to 20 July 2025, comparing them to the same period in the previous two years.

6 months to
20 Jul 2025
Same period 2024 Same period 2023
Rank 284 335 403
Rank change year-on-year +51 +68 +25
Contract jobs citing SOLID 77 64 81
As % of all contract jobs advertised in London 0.56% 0.38% 0.32%
As % of the Processes & Methodologies category 0.61% 0.42% 0.36%
Number of daily rates quoted 49 53 57
10th Percentile £411 £425 £446
25th Percentile £505 £481 £509
Median daily rate (50th Percentile) £585 £550 £575
Median % change year-on-year +6.36% -4.35% -
75th Percentile £688 £675 £719
90th Percentile £755 £725 £810
England median daily rate £550 £520 £544
% change year-on-year +5.77% -4.37% +3.57%
Number of hourly rates quoted 0 0 2
10th Percentile - - £76.50
25th Percentile - - £78.75
Median hourly rate - - £82.50
75th Percentile - - £86.25
90th Percentile - - £88.50
England median hourly rate - £64.50 £82.50
% change year-on-year - -21.82% +26.92%

All Process and Methodology Skills
London

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

Contract vacancies with a requirement for process or methodology skills 12,568 15,106 22,685
As % of all contract IT jobs advertised in London 92.09% 88.72% 90.65%
Number of daily rates quoted 8,416 10,742 16,462
10th Percentile £331 £350 £363
25th Percentile £425 £450 £463
Median daily rate (50th Percentile) £550 £550 £575
Median % change year-on-year - -4.35% -
75th Percentile £675 £675 £700
90th Percentile £788 £800 £800
England median daily rate £513 £525 £550
% change year-on-year -2.38% -4.55% -
Number of hourly rates quoted 236 254 247
10th Percentile £16.50 £16.25 £18.54
25th Percentile £24.66 £20.99 £23.88
Median hourly rate £30.40 £33.53 £41.50
Median % change year-on-year -9.31% -19.22% +16.90%
75th Percentile £50.13 £51.50 £65.05
90th Percentile £63.50 £70.73 £82.70
England median hourly rate £25.15 £39.50 £42.50
% change year-on-year -36.33% -7.06% +63.46%

SOLID
Job Vacancy Trend in London

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

Job vacancy trend for SOLID in London

SOLID
Contractor Daily Rate Trend in London

3-month moving average daily rate quoted in jobs citing SOLID in London.

Daily rate trend for SOLID in London

SOLID
Daily Rate Histogram in London

Daily rate distribution for jobs citing SOLID in London over the 6 months to 20 July 2025.

Daily rate histogram for SOLID in London

SOLID
Contractor Hourly Rate Trend in London

3-month moving average hourly rates quoted in jobs citing SOLID in London.

Hourly rate trend for SOLID in London

SOLID
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing SOLID within the London region over the 6 months to 20 July 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Jobs
Central London +1 16 £585 +6.36% 7
SOLID
England

SOLID
Co-occurring Skills and Capabilities in London 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 1 (1.30%) Alfresco
1 1 (1.30%) Camunda
1 1 (1.30%) CMS
1 1 (1.30%) Confluence
Business Applications
1 5 (6.49%) Aladdin
Cloud Services
1 32 (41.56%) AWS
2 27 (35.06%) Azure
3 19 (24.68%) Azure DevOps
4 7 (9.09%) Azure Service Bus
4 7 (9.09%) GCP
5 4 (5.19%) Amazon EC2
5 4 (5.19%) Amazon EKS
5 4 (5.19%) Amazon ElastiCache
5 4 (5.19%) Amazon S3
5 4 (5.19%) CloudFront
5 4 (5.19%) GitHub
5 4 (5.19%) Route 53
6 3 (3.90%) GitHub Actions
6 3 (3.90%) Google Kubernetes Engine
6 3 (3.90%) OpenShift
7 2 (2.60%) AWS Lambda
7 2 (2.60%) Azure AKS
7 2 (2.60%) Sentry
8 1 (1.30%) Amazon Cognito
8 1 (1.30%) Azure API Management
Communications & Networking
1 1 (1.30%) HTTP
Database & Business Intelligence
1 29 (37.66%) NoSQL
2 20 (25.97%) PostgreSQL
3 17 (22.08%) MongoDB
4 11 (14.29%) Redis
5 9 (11.69%) SQL Server
6 8 (10.39%) MySQL
7 6 (7.79%) Relational Database
8 5 (6.49%) Azure SQL Database
9 4 (5.19%) Amazon Aurora
9 4 (5.19%) DocumentDB
10 2 (2.60%) OLTP
Development Applications
1 10 (12.99%) JUnit
2 9 (11.69%) Jenkins
3 8 (10.39%) Git
4 6 (7.79%) Gradle
5 5 (6.49%) Maven
6 4 (5.19%) Mockito
6 4 (5.19%) SonarQube
7 3 (3.90%) Eclipse
7 3 (3.90%) IntelliJ
7 3 (3.90%) TeamCity
7 3 (3.90%) TestNG
8 2 (2.60%) CircleCI
8 2 (2.60%) Cucumber
8 2 (2.60%) Cypress.io
9 1 (1.30%) Gatling
9 1 (1.30%) Hamcrest
9 1 (1.30%) Mocha
9 1 (1.30%) Moq
9 1 (1.30%) Postman
9 1 (1.30%) Serenity BDD
General
1 22 (28.57%) Social Skills
2 21 (27.27%) Finance
2 21 (27.27%) Public Sector
3 11 (14.29%) Inclusion and Diversity
4 8 (10.39%) Banking
5 4 (5.19%) Electronics
5 4 (5.19%) Manufacturing
5 4 (5.19%) Marketing
5 4 (5.19%) Retail Banking
5 4 (5.19%) Telecoms
6 2 (2.60%) Influencing Skills
7 1 (1.30%) Digital Health
7 1 (1.30%) Investment Banking
7 1 (1.30%) Retail
Job Titles
1 58 (75.32%) Developer
2 16 (20.78%) Java Developer
3 13 (16.88%) Senior
3 13 (16.88%) Senior Developer
4 10 (12.99%) Lead
5 9 (11.69%) Lead Developer
5 9 (11.69%) SC Cleared Java Developer
6 7 (9.09%) C# Developer
6 7 (9.09%) Full-Stack Developer
7 6 (7.79%) Python Developer
8 5 (6.49%) .NET Developer
8 5 (6.49%) C# .NET Developer
8 5 (6.49%) Lead .NET Developer
8 5 (6.49%) Lead C# Developer
8 5 (6.49%) Senior .NET Developer
8 5 (6.49%) Senior C# .NET Developer
8 5 (6.49%) Senior C# Developer
9 4 (5.19%) Android Engineer
9 4 (5.19%) Architect
9 4 (5.19%) Azure Developer
Libraries, Frameworks & Software Standards
1 25 (32.47%) .NET
2 24 (31.17%) React
3 23 (29.87%) Spring
4 22 (28.57%) Spring Boot
5 19 (24.68%) REST
6 16 (20.78%) RESTful
6 16 (20.78%) SOAP
7 15 (19.48%) .NET Core
7 15 (19.48%) Kafka
8 14 (18.18%) Node.js
9 11 (14.29%) HTML
10 10 (12.99%) Vue
11 9 (11.69%) GraphQL
11 9 (11.69%) Hibernate
12 8 (10.39%) Express.js
13 7 (9.09%) .NET Framework
13 7 (9.09%) AngularJS
14 6 (7.79%) CSS
14 6 (7.79%) Entity Framework
15 5 (6.49%) Dapper ORM
Miscellaneous
1 6 (7.79%) Greenfield Project
1 6 (7.79%) Product Ownership
2 5 (6.49%) Distributed Systems
2 5 (6.49%) Fixed Income
2 5 (6.49%) Foreign Exchange (FX)
2 5 (6.49%) PKI
3 4 (5.19%) Derivative
4 3 (3.90%) Cloud Native
4 3 (3.90%) Distributed Applications
5 2 (2.60%) Legacy Systems
5 2 (2.60%) Public Cloud
6 1 (1.30%) Algorithms
6 1 (1.30%) Data Structures
6 1 (1.30%) Legacy Code
6 1 (1.30%) Linux Command Line
6 1 (1.30%) Mobile App
6 1 (1.30%) NHS
6 1 (1.30%) N-Tier
6 1 (1.30%) Onboarding
6 1 (1.30%) Security Posture
Operating Systems
1 4 (5.19%) Android
2 1 (1.30%) Apple iOS
2 1 (1.30%) Linux
2 1 (1.30%) Unix
2 1 (1.30%) Windows
Processes & Methodologies
1 46 (59.74%) Agile
2 40 (51.95%) TDD
3 36 (46.75%) DevOps
4 31 (40.26%) Microservices
5 28 (36.36%) CI/CD
6 24 (31.17%) Design Patterns
7 20 (25.97%) Clean Code
7 20 (25.97%) OO
7 20 (25.97%) Test Automation
8 16 (20.78%) Event-Driven
8 16 (20.78%) Software Engineering
9 15 (19.48%) Event-Driven Architecture
10 14 (18.18%) Continuous Integration
10 14 (18.18%) Mentoring
11 12 (15.58%) BDD
12 11 (14.29%) Investment Management
13 10 (12.99%) API Development
13 10 (12.99%) Containerisation
13 10 (12.99%) Don't repeat yourself (DRY)
13 10 (12.99%) Scrum
Programming Languages
1 37 (48.05%) SQL
2 36 (46.75%) C#
2 36 (46.75%) Java
3 31 (40.26%) JavaScript
4 22 (28.57%) Python
5 6 (7.79%) PowerShell
5 6 (7.79%) TypeScript
6 5 (6.49%) Kotlin
7 4 (5.19%) Scala
8 3 (3.90%) Go
9 2 (2.60%) Ruby
9 2 (2.60%) Shell Script
9 2 (2.60%) T-SQL
10 1 (1.30%) Bicep
10 1 (1.30%) Groovy
10 1 (1.30%) Objective-C
10 1 (1.30%) Swift
Qualifications
1 19 (24.68%) Security Cleared
2 18 (23.38%) SC Cleared
3 9 (11.69%) AWS Certified Developer
4 2 (2.60%) Computer Science Degree
4 2 (2.60%) Degree
Quality Assurance & Compliance
1 4 (5.19%) Accessibility
2 2 (2.60%) WCAG
3 1 (1.30%) HL7
3 1 (1.30%) QA
System Software
1 20 (25.97%) Docker
2 1 (1.30%) Active Directory
2 1 (1.30%) Virtual Machines
Systems Management
1 21 (27.27%) Kubernetes
2 14 (18.18%) Terraform
3 6 (7.79%) Grafana
4 3 (3.90%) Prometheus
5 1 (1.30%) Kibana
5 1 (1.30%) Single Sign-On
Vendors
1 8 (10.39%) Microsoft
2 5 (6.49%) Google
3 4 (5.19%) Murex
3 4 (5.19%) Oracle
3 4 (5.19%) SAP
4 2 (2.60%) MuleSoft
4 2 (2.60%) Splunk
5 1 (1.30%) Apple
5 1 (1.30%) Sybase