Non-Blocking Code Contracts

Non-Blocking Code
UK

The table below provides summary statistics for contract job vacancies requiring Non-Blocking Code skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited Non-Blocking Code over the 6 months leading up to 2 August 2025, comparing them to the same period in the previous two years.

6 months to
2 Aug 2025
Same period 2024 Same period 2023
Rank 565 553 667
Rank change year-on-year -12 +114 +199
Contract jobs citing Non-Blocking Code 2 14 4
As % of all contract jobs advertised in the UK 0.006% 0.036% 0.007%
As % of the Processes & Methodologies category 0.007% 0.042% 0.008%
Number of daily rates quoted 2 14 3
10th Percentile £462 £606 £602
25th Percentile £464 £608 £627
Median daily rate (50th Percentile) £473 £615 £688
Median % change year-on-year -23.17% -10.55% +27.91%
75th Percentile £479 £623 £713
90th Percentile £480 £629 £716
UK excluding London median daily rate £475 - -

All Process and Methodology Skills
UK

Non-Blocking Code 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 29,972 33,531 47,751
As % of all contract IT jobs advertised in the UK 90.41% 85.45% 89.25%
Number of daily rates quoted 18,760 21,562 32,735
10th Percentile £300 £310 £320
25th Percentile £404 £413 £430
Median daily rate (50th Percentile) £500 £525 £550
Median % change year-on-year -4.76% -4.55% -
75th Percentile £625 £638 £650
90th Percentile £734 £750 £750
UK excluding London median daily rate £475 £500 £500
% change year-on-year -5.00% - -
Number of hourly rates quoted 1,662 1,890 1,565
10th Percentile £14.20 £14.00 £14.25
25th Percentile £17.30 £18.15 £18.57
Median hourly rate £25.15 £40.50 £42.50
Median % change year-on-year -37.90% -4.71% +62.40%
75th Percentile £50.00 £65.00 £65.00
90th Percentile £68.00 £74.59 £77.00
UK excluding London median hourly rate £23.00 £41.25 £40.00
% change year-on-year -44.24% +3.13% +86.05%

Non-Blocking Code
Job Vacancy Trend

Job postings citing Non-Blocking Code as a proportion of all IT jobs advertised.

Job vacancy trend for Non-Blocking Code in the UK

Non-Blocking Code
Contractor Daily Rate Trend

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

Daily rate trend for Non-Blocking Code in the UK

Non-Blocking Code
Top 5 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Non-Blocking Code within the UK over the 6 months to 2 August 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 +18 2 £473 -23.17% 3
London +1 2 £473 -23.17%
Work from Home +15 1 £470 -23.58% 2
UK excluding London - 1 £475 - 3
South East - 1 £475 - 2

Non-Blocking Code
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:

Cloud Services
1 2 (100.00%) GCP
2 1 (50.00%) AWS
2 1 (50.00%) Azure
2 1 (50.00%) Datadog
2 1 (50.00%) dbt
2 1 (50.00%) GitHub
2 1 (50.00%) Stackdriver
Database & Business Intelligence
1 2 (100.00%) NoSQL
1 2 (100.00%) Redis
2 1 (50.00%) MongoDB
2 1 (50.00%) MySQL
2 1 (50.00%) PostgreSQL
Development Applications
1 1 (50.00%) Cucumber
1 1 (50.00%) Cypress.io
1 1 (50.00%) EasyMock
1 1 (50.00%) GitLab
1 1 (50.00%) JBehave
1 1 (50.00%) JUnit
1 1 (50.00%) Mocha
1 1 (50.00%) Mockito
1 1 (50.00%) VisualVM
1 1 (50.00%) YourKit
General
1 1 (50.00%) Telecoms
Job Titles
1 1 (50.00%) Developer
1 1 (50.00%) Java Developer
Libraries, Frameworks & Software Standards
1 1 (50.00%) Fastify
1 1 (50.00%) GraphQL
1 1 (50.00%) Jest
1 1 (50.00%) Kafka
1 1 (50.00%) Lambda Expressions
1 1 (50.00%) Node.js
1 1 (50.00%) OAuth
1 1 (50.00%) OAuth2
1 1 (50.00%) OpenAPI
1 1 (50.00%) OpenID
1 1 (50.00%) RabbitMQ
1 1 (50.00%) RESTful
1 1 (50.00%) Spring
1 1 (50.00%) Spring Boot
1 1 (50.00%) Spring Cloud
1 1 (50.00%) Swagger
1 1 (50.00%) YAML
Miscellaneous
1 1 (50.00%) Algorithms
1 1 (50.00%) Cloud Native
1 1 (50.00%) Data Structures
Processes & Methodologies
1 2 (100.00%) Architectural Patterns
1 2 (100.00%) CI/CD
1 2 (100.00%) Containerisation
1 2 (100.00%) Microservices
2 1 (50.00%) Application Security
2 1 (50.00%) Asynchronous Programming
2 1 (50.00%) Code Quality
2 1 (50.00%) Concurrent Programming
2 1 (50.00%) DevOps
2 1 (50.00%) Digital Transformation Programme
2 1 (50.00%) Distributed Cache
2 1 (50.00%) Don't repeat yourself (DRY)
2 1 (50.00%) Event-Driven
2 1 (50.00%) Event-Driven Programming
2 1 (50.00%) Functional Testing
2 1 (50.00%) OO
2 1 (50.00%) Performance Engineering
2 1 (50.00%) Problem-Solving
2 1 (50.00%) Root Cause Analysis
2 1 (50.00%) SOLID
Programming Languages
1 2 (100.00%) SQL
2 1 (50.00%) Java
2 1 (50.00%) JavaScript
2 1 (50.00%) Python
System Software
1 2 (100.00%) Docker
2 1 (50.00%) Virtual Machines
Systems Management
1 2 (100.00%) Grafana
1 2 (100.00%) Kubernetes
2 1 (50.00%) Ansible
2 1 (50.00%) Puppet
2 1 (50.00%) Terraform
Vendors
1 2 (100.00%) Splunk
2 1 (50.00%) Google