Code Optimisation Contracts

Code Optimisation
UK

The table below provides summary statistics for contract job vacancies requiring Code Optimisation skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited Code Optimisation over the 6 months leading up to 5 July 2025, comparing them to the same period in the previous two years.

6 months to
5 Jul 2025
Same period 2024 Same period 2023
Rank 533 563 649
Rank change year-on-year +30 +86 +169
Contract jobs citing Code Optimisation 17 11 30
As % of all contract jobs advertised in the UK 0.053% 0.025% 0.053%
As % of the Processes & Methodologies category 0.059% 0.030% 0.059%
Number of daily rates quoted 10 6 28
10th Percentile £268 £400 £543
25th Percentile £314 £431 £581
Median daily rate (50th Percentile) £475 £563 £795
Median % change year-on-year -15.56% -29.25% +23.74%
75th Percentile £611 £622 £915
90th Percentile £641 £688 £1,074
UK excluding London median daily rate £450 £400 £557
% change year-on-year +12.50% -28.12% -1.50%
Number of hourly rates quoted 0 4 0
Median hourly rate - £60.50 -
UK excluding London median hourly rate - £60.50 -

All Process and Methodology Skills
UK

Code Optimisation 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.

Contract vacancies with a requirement for process or methodology skills 28,850 36,964 50,614
As % of all contract IT jobs advertised in the UK 90.71% 85.28% 89.53%
Number of daily rates quoted 18,170 23,592 34,850
10th Percentile £300 £300 £325
25th Percentile £405 £413 £438
Median daily rate (50th Percentile) £505 £525 £550
Median % change year-on-year -3.81% -4.55% +0.92%
75th Percentile £625 £638 £650
90th Percentile £738 £750 £750
UK excluding London median daily rate £475 £500 £500
% change year-on-year -5.00% - -
Number of hourly rates quoted 1,420 2,515 1,729
10th Percentile £14.20 £12.75 £12.00
25th Percentile £17.42 £16.18 £16.61
Median hourly rate £25.15 £38.00 £37.34
Median % change year-on-year -33.82% +1.77% +43.62%
75th Percentile £53.75 £61.30 £65.00
90th Percentile £70.00 £72.50 £75.50
UK excluding London median hourly rate £24.66 £38.12 £35.00
% change year-on-year -35.31% +8.91% +66.67%

Code Optimisation
Job Vacancy Trend

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

Job vacancy trend for Code Optimisation in the UK

Code Optimisation
Contractor Daily Rate Trend

3-month moving average daily rate quoted in jobs citing Code Optimisation.

Daily rate trend for Code Optimisation in the UK

Code Optimisation
Daily Rate Histogram

Daily rate distribution for jobs citing Code Optimisation over the 6 months to 5 July 2025.

Daily rate histogram for Code Optimisation in the UK

Code Optimisation
Contractor Hourly Rate Trend

3-month moving average hourly rates quoted in jobs citing Code Optimisation.

Hourly rate trend for Code Optimisation in the UK

Code Optimisation
Top 9 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Code Optimisation within the UK over the 6 months to 5 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
England +61 15 £475 -15.56% 27
London +51 10 £475 -17.39% 21
UK excluding London +40 5 £450 +12.50% 12
Work from Home +32 4 £610 +10.91% 17
Scotland +1 2 £300 - 5
North of England - 2 £600 - 3
Yorkshire - 2 £600 -
Midlands - 1 - -
West Midlands - 1 - -

Code Optimisation
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 1 (5.88%) Apache
1 1 (5.88%) Apache Airflow
1 1 (5.88%) Apache Spark
Cloud Services
1 4 (23.53%) AWS
1 4 (23.53%) Azure
2 2 (11.76%) Azure Event Grid
3 1 (5.88%) GCP
3 1 (5.88%) GitHub
3 1 (5.88%) GitHub Actions
Database & Business Intelligence
1 4 (23.53%) PostgreSQL
2 3 (17.65%) MongoDB
3 1 (5.88%) Apache Cassandra
3 1 (5.88%) Delta Lake
3 1 (5.88%) Hadoop
3 1 (5.88%) SQL Server
3 1 (5.88%) SQL Server Integration Services
Development Applications
1 3 (17.65%) JUnit
1 3 (17.65%) Maven
1 3 (17.65%) Mockito
2 2 (11.76%) Git
3 1 (5.88%) Android Studio
3 1 (5.88%) Bitbucket
3 1 (5.88%) Gradle
3 1 (5.88%) Jenkins
3 1 (5.88%) Team Foundation Server
3 1 (5.88%) Visual Studio Code
3 1 (5.88%) Xcode
General
1 9 (52.94%) Finance
2 2 (11.76%) Analytical Skills
2 2 (11.76%) Social Skills
3 1 (5.88%) Banking
3 1 (5.88%) Retail
Job Titles
1 5 (29.41%) Developer
2 3 (17.65%) Java Engineer
3 2 (11.76%) Full-Stack Developer
3 2 (11.76%) Technical Engineer
4 1 (5.88%) Ab Initio Developer
4 1 (5.88%) Analyst
4 1 (5.88%) Angular Developer
4 1 (5.88%) Data Engineer
4 1 (5.88%) Full-Stack Engineer
4 1 (5.88%) Full-Stack Java Developer
4 1 (5.88%) J2EE Specialist
4 1 (5.88%) Java Developer
4 1 (5.88%) Lead
4 1 (5.88%) Quantitative Analyst
4 1 (5.88%) Quantitative Developer
4 1 (5.88%) React Developer
4 1 (5.88%) Senior
4 1 (5.88%) Senior Developer
4 1 (5.88%) Senior Quantitative Developer
4 1 (5.88%) Technical Leader
Libraries, Frameworks & Software Standards
1 6 (35.29%) AngularJS
2 4 (23.53%) Spring
2 4 (23.53%) Spring Boot
3 3 (17.65%) Hibernate
3 3 (17.65%) JPA
3 3 (17.65%) Mongoose
3 3 (17.65%) Node.js
3 3 (17.65%) React
4 2 (11.76%) Kafka
4 2 (11.76%) REST
5 1 (5.88%) .NET
5 1 (5.88%) .NET Core
5 1 (5.88%) Ext JS
5 1 (5.88%) J2EE
5 1 (5.88%) Jest
5 1 (5.88%) LAPP Stack
5 1 (5.88%) PySpark
5 1 (5.88%) React Native
5 1 (5.88%) Redux
5 1 (5.88%) SOAP
Miscellaneous
1 4 (23.53%) Mobile App
2 2 (11.76%) Embedded Systems
2 2 (11.76%) RISC-V
2 2 (11.76%) SIMD
2 2 (11.76%) Virtual Team
3 1 (5.88%) Cloud Native
3 1 (5.88%) Distributed Computing
Operating Systems
1 4 (23.53%) Linux
2 1 (5.88%) Android
2 1 (5.88%) Apple iOS
2 1 (5.88%) Unix
2 1 (5.88%) Windows
Processes & Methodologies
1 5 (29.41%) Clean Code
2 4 (23.53%) CI/CD
2 4 (23.53%) Full-Stack Development
2 4 (23.53%) Problem-Solving
2 4 (23.53%) Unit Testing
3 3 (17.65%) Event-Driven
3 3 (17.65%) Mentoring
3 3 (17.65%) SOA
3 3 (17.65%) TDD
4 2 (11.76%) Agile
4 2 (11.76%) Analytics
4 2 (11.76%) Code Quality
4 2 (11.76%) Integration Testing
4 2 (11.76%) Mathematical Modelling
4 2 (11.76%) Mathematics
4 2 (11.76%) Mobile Application Development
4 2 (11.76%) Refactoring
4 2 (11.76%) Scrum
4 2 (11.76%) Test Automation
4 2 (11.76%) User Experience
Programming Languages
1 8 (47.06%) Java
1 8 (47.06%) TypeScript
2 5 (29.41%) Python
3 4 (23.53%) JavaScript
3 4 (23.53%) SQL
4 3 (17.65%) Kotlin
5 2 (11.76%) Assembly Language
5 2 (11.76%) C
6 1 (5.88%) JSX
6 1 (5.88%) T-SQL
Qualifications
1 1 (5.88%) Degree
Quality Assurance & Compliance
1 1 (5.88%) Accessibility
1 1 (5.88%) QA
System Software
1 2 (11.76%) QEMU
2 1 (5.88%) Apache ZooKeeper
2 1 (5.88%) Docker
Systems Management
1 1 (5.88%) Ansible
1 1 (5.88%) Kubernetes
1 1 (5.88%) Progress Chef
1 1 (5.88%) Puppet
Vendors
1 2 (11.76%) Microsoft
2 1 (5.88%) Ab Initio
2 1 (5.88%) Oracle
2 1 (5.88%) ServiceNow