OpenAPI Contracts in London

OpenAPI Specification
England > London

The table below provides summary statistics for contract job vacancies advertised in London requiring OpenAPI skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited OpenAPI over the 6 months leading up to 16 May 2025, comparing them to the same period in the previous two years.

6 months to
16 May 2025
Same period 2024 Same period 2023
Rank 315 362 448
Rank change year-on-year +47 +86 +109
Contract jobs citing OpenAPI 43 23 41
As % of all contract jobs advertised in London 0.35% 0.13% 0.16%
As % of the Libraries, Frameworks & Software Standards category 1.33% 0.52% 0.58%
Number of daily rates quoted 27 19 25
10th Percentile £420 £338 -
25th Percentile £457 £431 £458
Median daily rate (50th Percentile) £530 £500 £465
Median % change year-on-year +6.00% +7.53% -21.52%
75th Percentile £688 £578 £625
90th Percentile £825 £604 £765
England median daily rate £530 £500 £600
% change year-on-year +6.00% -16.67% +14.29%
Number of hourly rates quoted 0 0 1
10th Percentile - - -
25th Percentile - - £67.50
Median hourly rate - - £70.00
75th Percentile - - £72.50
90th Percentile - - -
England median hourly rate - - £70.00

All Software Libraries and Frameworks
London

OpenAPI falls under the Software Libraries and Frameworks category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring technical specification, industry standards, software libraries and framework skills in London.

Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 3,222 4,453 7,029
As % of all contract IT jobs advertised in London 25.98% 25.50% 27.11%
Number of daily rates quoted 2,263 3,327 5,269
10th Percentile £385 £377 £413
25th Percentile £450 £463 £500
Median daily rate (50th Percentile) £565 £575 £600
Median % change year-on-year -1.74% -4.17% -
75th Percentile £725 £700 £725
90th Percentile £838 £825 £810
England median daily rate £525 £550 £560
% change year-on-year -4.55% -1.79% -0.88%
Number of hourly rates quoted 15 24 39
10th Percentile £33.25 £16.25 £30.60
25th Percentile £34.13 £23.80 £41.63
Median hourly rate £52.50 £40.00 £67.50
Median % change year-on-year +31.25% -40.74% +38.95%
75th Percentile £66.25 £63.13 £75.00
90th Percentile £83.75 £72.60 £82.40
England median hourly rate £65.00 £47.50 £65.00
% change year-on-year +36.84% -26.92% +28.71%

OpenAPI
Job Vacancy Trend in London

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

Job vacancy trend for OpenAPI in London

OpenAPI
Contractor Daily Rate Trend in London

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

Daily rate trend for OpenAPI in London

OpenAPI
Daily Rate Histogram in London

Daily rate distribution for jobs citing OpenAPI in London over the 6 months to 16 May 2025.

Daily rate histogram for OpenAPI in London

OpenAPI
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 OpenAPI within the London region over the 6 months to 16 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Jobs
South London - 5 - -
West London +13 2 - - 2
Central London 0 2 £425 -10.53%
OpenAPI
England

OpenAPI
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 12 (27.91%) Confluence
2 3 (6.98%) JBoss
2 3 (6.98%) Tomcat
Cloud Services
1 11 (25.58%) AWS
2 8 (18.60%) Cloud Computing
2 8 (18.60%) Slack
3 5 (11.63%) Azure
4 4 (9.30%) GCP
4 4 (9.30%) GitHub
4 4 (9.30%) Serverless
5 3 (6.98%) Amazon Cognito
5 3 (6.98%) Amazon S3
5 3 (6.98%) Amazon SQS
5 3 (6.98%) AWS Lambda
5 3 (6.98%) Figma
6 2 (4.65%) Apigee
6 2 (4.65%) SaaS
6 2 (4.65%) SonarCloud
7 1 (2.33%) Azure DevOps
7 1 (2.33%) Azure Event Grid
7 1 (2.33%) Azure Functions
Communications & Networking
1 10 (23.26%) HTTP
Database & Business Intelligence
1 24 (55.81%) PostgreSQL
2 14 (32.56%) Relational Database
3 13 (30.23%) MongoDB
4 11 (25.58%) MySQL
5 8 (18.60%) Apache Cassandra
6 5 (11.63%) Elasticsearch
7 3 (6.98%) DynamoDB
7 3 (6.98%) Neo4j
7 3 (6.98%) Redis
8 1 (2.33%) SQL Server
Development Applications
1 26 (60.47%) JUnit
2 15 (34.88%) Git
3 14 (32.56%) Gradle
3 14 (32.56%) Mockito
4 13 (30.23%) JIRA
5 11 (25.58%) Jenkins
5 11 (25.58%) Liquibase
6 8 (18.60%) Cucumber
6 8 (18.60%) Jasmine
6 8 (18.60%) Postman
7 7 (16.28%) GitLab
8 4 (9.30%) Maven
9 3 (6.98%) Bitbucket
9 3 (6.98%) Cypress.io
9 3 (6.98%) Eclipse
9 3 (6.98%) IntelliJ
9 3 (6.98%) Mocha
9 3 (6.98%) Selenium
9 3 (6.98%) SonarQube
9 3 (6.98%) TestNG
General
1 17 (39.53%) Public Sector
2 15 (34.88%) Finance
3 11 (25.58%) Electronics
3 11 (25.58%) Manufacturing
3 11 (25.58%) Marketing
3 11 (25.58%) Telecoms
4 8 (18.60%) Social Skills
5 1 (2.33%) Analytical Skills
5 1 (2.33%) Inclusion and Diversity
5 1 (2.33%) Publishing
Job Titles
1 25 (58.14%) Developer
2 21 (48.84%) Java Developer
3 13 (30.23%) Lead
4 10 (23.26%) Lead Developer
4 10 (23.26%) Lead Java Developer
4 10 (23.26%) SC Cleared Java Developer
5 9 (20.93%) Software Engineer
6 8 (18.60%) Java Engineer
7 7 (16.28%) Java Software Engineer
7 7 (16.28%) React Developer
7 7 (16.28%) Senior
8 6 (13.95%) SC Cleared Software Engineer
9 4 (9.30%) Senior Developer
9 4 (9.30%) Senior Java Developer
10 3 (6.98%) Designer
10 3 (6.98%) Digital Developer
10 3 (6.98%) JavaScript Engineer
11 2 (4.65%) Android Engineer
11 2 (4.65%) AWS Software Engineer
11 2 (4.65%) Content Designer
Libraries, Frameworks & Software Standards
1 43 (100.00%) Swagger
2 28 (65.12%) Spring Boot
3 25 (58.14%) Spring
4 16 (37.21%) Kafka
4 16 (37.21%) RESTful
5 15 (34.88%) React
6 11 (25.58%) REST
7 10 (23.26%) Spring Security
8 8 (18.60%) Spring Batch
9 7 (16.28%) OAuth
10 5 (11.63%) GraphQL
10 5 (11.63%) HTML
11 4 (9.30%) AngularJS
11 4 (9.30%) Node.js
11 4 (9.30%) OAuth2
12 3 (6.98%) CSS
12 3 (6.98%) HTML5
12 3 (6.98%) JSP
12 3 (6.98%) Struts
12 3 (6.98%) WebSockets
Miscellaneous
1 8 (18.60%) Distributed Denial-of-Service
2 5 (11.63%) Mobile App
3 3 (6.98%) Algorithms
3 3 (6.98%) Data Structures
3 3 (6.98%) Vector Graphics
4 2 (4.65%) Distributed Systems
4 2 (4.65%) Enterprise Software
4 2 (4.65%) Self-Motivation
4 2 (4.65%) Taxonomies
5 1 (2.33%) Legacy Applications
5 1 (2.33%) Onboarding
5 1 (2.33%) Product Ownership
Operating Systems
1 8 (18.60%) Linux
1 8 (18.60%) Red Hat Enterprise Linux
2 3 (6.98%) Windows
2 3 (6.98%) Windows Server
3 2 (4.65%) Android
Processes & Methodologies
1 30 (69.77%) Microservices
2 26 (60.47%) Containerisation
3 25 (58.14%) CI/CD
4 21 (48.84%) Software Engineering
4 21 (48.84%) TDD
5 20 (46.51%) Agile
5 20 (46.51%) DevOps
6 15 (34.88%) Test Automation
7 13 (30.23%) Continuous Integration
7 13 (30.23%) Migration
8 12 (27.91%) API Design
9 11 (25.58%) Business Intelligence
9 11 (25.58%) Digital Marketing
9 11 (25.58%) Programme Management
10 9 (20.93%) Event-Driven
10 9 (20.93%) Event-Driven Architecture
11 8 (18.60%) API Management
11 8 (18.60%) BDD
11 8 (18.60%) Continuous Delivery
11 8 (18.60%) User Experience
Programming Languages
1 31 (72.09%) Java
2 22 (51.16%) SQL
3 12 (27.91%) TypeScript
4 8 (18.60%) Bash
5 7 (16.28%) JavaScript
6 3 (6.98%) PL/SQL
6 3 (6.98%) Python
7 2 (4.65%) Go
7 2 (4.65%) Kotlin
8 1 (2.33%) C#
Qualifications
1 23 (53.49%) SC Cleared
1 23 (53.49%) Security Cleared
2 1 (2.33%) BPSS Clearance
2 1 (2.33%) Computer Science Degree
2 1 (2.33%) Degree
2 1 (2.33%) DV Cleared
Quality Assurance & Compliance
1 4 (9.30%) Accessibility
System Software
1 27 (62.79%) Docker
2 3 (6.98%) Active Directory
Systems Management
1 15 (34.88%) Kubernetes
2 3 (6.98%) Grafana
2 3 (6.98%) Prometheus
3 1 (2.33%) Argo
3 1 (2.33%) Terraform
Vendors
1 11 (25.58%) SAP
2 5 (11.63%) Microsoft
3 3 (6.98%) Google
4 2 (4.65%) Salesforce
5 1 (2.33%) Red Hat
5 1 (2.33%) WSO2