SOLID Contracts in the City of London

SOLID Principles
Central London > City of London

The table below provides summary statistics for contract job vacancies advertised in the City of 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 2 May 2025, comparing them to the same period in the previous two years.

6 months to
2 May 2025
Same period 2024 Same period 2023
Rank 87 119 162
Rank change year-on-year +32 +43 -3
Contract jobs citing SOLID 32 7 10
As % of all contract jobs advertised in the City of London 1.82% 0.32% 0.28%
As % of the Processes & Methodologies category 1.95% 0.35% 0.30%
Number of daily rates quoted 22 5 7
10th Percentile - £455 £505
25th Percentile - £481 £513
Median daily rate (50th Percentile) £585 £483 £525
Median % change year-on-year +21.24% -8.10% -
75th Percentile £688 £650 £630
90th Percentile - £673 £770
Central London median daily rate £585 £483 £530
% change year-on-year +21.24% -8.96% +0.95%

All Process and Methodology Skills
City of 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 the City of London.

Contract vacancies with a requirement for process or methodology skills 1,637 1,989 3,335
As % of all contract IT jobs advertised in the City of London 93.17% 90.53% 91.72%
Number of daily rates quoted 1,034 1,408 2,250
10th Percentile £363 £363 £356
25th Percentile £463 £450 £475
Median daily rate (50th Percentile) £575 £565 £600
Median % change year-on-year +1.77% -5.83% +4.35%
75th Percentile £684 £688 £730
90th Percentile £775 £813 £825
Central London median daily rate £575 £550 £600
% change year-on-year +4.55% -8.33% +5.26%
Number of hourly rates quoted 12 11 24
10th Percentile £22.00 £19.92 £15.33
25th Percentile £24.00 £20.22 £18.03
Median hourly rate £29.58 £25.00 £35.00
Median % change year-on-year +18.30% -28.57% -14.63%
75th Percentile £45.00 £40.00 £58.75
90th Percentile £62.25 £41.84 £88.30
Central London median hourly rate £29.07 £27.81 £35.00
% change year-on-year +4.53% -20.54% -14.63%

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
Contractor Daily Rate Trend in the City of London

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

Daily rate trend for SOLID in the City of London

SOLID
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing SOLID in the City of London over the 6 months to 2 May 2025.

Daily rate histogram for SOLID in the City of London

SOLID
Co-occurring Skills and Capabilities in the City of 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 2 (6.25%) Confluence
2 1 (3.13%) Anypoint
Cloud Services
1 26 (81.25%) AWS
2 6 (18.75%) Amazon EC2
2 6 (18.75%) Amazon EKS
2 6 (18.75%) Amazon ElastiCache
2 6 (18.75%) Amazon S3
2 6 (18.75%) Azure
2 6 (18.75%) CloudFront
2 6 (18.75%) Route 53
3 2 (6.25%) OpenShift
4 1 (3.13%) Amazon CloudWatch
4 1 (3.13%) Azure DevOps
Communications & Networking
1 1 (3.13%) Firewall
1 1 (3.13%) HTTP
1 1 (3.13%) VPN
Database & Business Intelligence
1 22 (68.75%) NoSQL
2 19 (59.38%) PostgreSQL
3 15 (46.88%) MongoDB
4 12 (37.50%) SQL Server
5 6 (18.75%) Amazon Aurora
5 6 (18.75%) DocumentDB
5 6 (18.75%) Redis
6 1 (3.13%) CockroachDB
6 1 (3.13%) Relational Database
Development Applications
1 5 (15.63%) Git
2 4 (12.50%) Jenkins
3 2 (6.25%) TeamCity
4 1 (3.13%) Bitbucket
4 1 (3.13%) Cucumber
4 1 (3.13%) Cypress.io
4 1 (3.13%) Gatling
4 1 (3.13%) GitLab
4 1 (3.13%) Hamcrest
4 1 (3.13%) JIRA
4 1 (3.13%) JUnit
4 1 (3.13%) Maven
4 1 (3.13%) Postman
4 1 (3.13%) Selenium
4 1 (3.13%) Serenity BDD
4 1 (3.13%) SonarQube
General
1 16 (50.00%) Public Sector
2 8 (25.00%) Finance
3 6 (18.75%) Banking
3 6 (18.75%) Retail Banking
4 2 (6.25%) Social Skills
5 1 (3.13%) Investment Banking
Job Titles
1 30 (93.75%) Developer
2 15 (46.88%) Java Developer
2 15 (46.88%) SC Cleared Java Developer
3 6 (18.75%) C# Developer
4 5 (15.63%) Full-Stack Developer
5 3 (9.38%) Python Developer
6 1 (3.13%) Automation Tester
6 1 (3.13%) Azure Developer
6 1 (3.13%) C# Developer - Investment Banking
6 1 (3.13%) Django Developer
6 1 (3.13%) Lead
6 1 (3.13%) Lead Developer
6 1 (3.13%) Lead Full-Stack Developer
6 1 (3.13%) MuleSoft Developer
6 1 (3.13%) Python/Django Developer
6 1 (3.13%) Tester
Libraries, Frameworks & Software Standards
1 20 (62.50%) React
2 16 (50.00%) Kafka
3 15 (46.88%) Spring
3 15 (46.88%) Spring Boot
4 10 (31.25%) GraphQL
4 10 (31.25%) RESTful
5 6 (18.75%) .NET
6 5 (15.63%) CSS
6 5 (15.63%) HTML
6 5 (15.63%) Web Services
7 3 (9.38%) REST
8 1 (3.13%) AngularJS
8 1 (3.13%) ASP.NET
8 1 (3.13%) ASP.NET Core
8 1 (3.13%) MUnit
8 1 (3.13%) Node.js
8 1 (3.13%) RAML
8 1 (3.13%) Vue
8 1 (3.13%) WireMock
8 1 (3.13%) XML
Miscellaneous
1 6 (18.75%) Derivative
1 6 (18.75%) Legacy Systems
1 6 (18.75%) Public Cloud
2 1 (3.13%) Linux Command Line
2 1 (3.13%) Management Information System
2 1 (3.13%) Product Ownership
2 1 (3.13%) Sports Betting
Operating Systems
1 1 (3.13%) Linux
1 1 (3.13%) Windows
Processes & Methodologies
1 23 (71.88%) Agile
2 21 (65.63%) DevOps
3 20 (62.50%) Clean Code
3 20 (62.50%) Microservices
4 16 (50.00%) API Development
5 12 (37.50%) TDD
6 9 (28.13%) CI/CD
7 7 (21.88%) Problem-Solving
8 6 (18.75%) Asset Management
8 6 (18.75%) Secure Coding
8 6 (18.75%) Unit Testing
9 5 (15.63%) Full-Stack Development
10 4 (12.50%) Code Quality
10 4 (12.50%) Continuous Integration
10 4 (12.50%) Domain-Driven Design
10 4 (12.50%) Test Automation
11 3 (9.38%) Analytics
11 3 (9.38%) Software Engineering
12 2 (6.25%) User Experience
12 2 (6.25%) User Stories
Programming Languages
1 20 (62.50%) JavaScript
2 17 (53.13%) SQL
3 16 (50.00%) Java
4 10 (31.25%) C#
5 3 (9.38%) Python
Qualifications
1 21 (65.63%) SC Cleared
1 21 (65.63%) Security Cleared
2 15 (46.88%) AWS Certified Developer
3 1 (3.13%) Degree
Quality Assurance & Compliance
1 3 (9.38%) QA
System Software
1 1 (3.13%) Docker
Systems Management
1 17 (53.13%) Kubernetes
2 1 (3.13%) CloudHub
Vendors
1 1 (3.13%) MuleSoft
1 1 (3.13%) Oracle
1 1 (3.13%) Salesforce
1 1 (3.13%) Splunk