OpenAPI Contracts in England

OpenAPI Specification
UK > England

The table below provides summary statistics for contract job vacancies advertised in England 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 1 May 2025, comparing them to the same period in the previous two years.

6 months to
1 May 2025
Same period 2024 Same period 2023
Rank 402 504 578
Rank change year-on-year +102 +74 +116
Contract jobs citing OpenAPI 83 38 75
As % of all contract jobs advertised in England 0.34% 0.10% 0.15%
As % of the Libraries, Frameworks & Software Standards category 1.52% 0.51% 0.64%
Number of daily rates quoted 53 31 50
10th Percentile £448 £338 -
25th Percentile £463 £419 £458
Median daily rate (50th Percentile) £530 £490 £600
Median % change year-on-year +8.16% -18.33% +14.29%
75th Percentile £638 £566 £675
90th Percentile £779 £619 £775
UK median daily rate £530 £490 £600
% change year-on-year +8.27% -18.42% +17.07%
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 - - -
UK median hourly rate - - £70.00

All Software Libraries and Frameworks
England

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 England.

Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 5,454 7,511 11,676
As % of all contract IT jobs advertised in England 22.39% 20.19% 23.14%
Number of daily rates quoted 3,783 5,341 8,633
10th Percentile £368 £350 £400
25th Percentile £425 £430 £463
Median daily rate (50th Percentile) £530 £550 £563
Median % change year-on-year -3.64% -2.22% -
75th Percentile £669 £675 £688
90th Percentile £800 £775 £798
UK median daily rate £525 £530 £550
% change year-on-year -0.94% -3.64% -
Number of hourly rates quoted 100 218 138
10th Percentile £30.13 £22.27 £28.73
25th Percentile £51.25 £43.00 £48.88
Median hourly rate £65.00 £46.18 £65.00
Median % change year-on-year +40.75% -28.95% +32.65%
75th Percentile £68.19 £65.00 £75.00
90th Percentile £82.19 £75.00 £80.08
UK median hourly rate £65.00 £46.18 £65.00
% change year-on-year +40.75% -28.95% +32.65%

OpenAPI
Job Vacancy Trend in England

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

Job vacancy trend for OpenAPI in England

OpenAPI
Contractor Daily Rate Trend in England

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

Daily rate trend for OpenAPI in England

OpenAPI
Daily Rate Histogram in England

Daily rate distribution for jobs citing OpenAPI in England over the 6 months to 1 May 2025.

Daily rate histogram for OpenAPI in England

OpenAPI
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing OpenAPI within the England region over the 6 months to 1 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
London +61 46 £530 +8.72% 14
North of England +40 22 £530 +63.08% 6
North West +31 15 £530 +63.08% 2
Yorkshire - 6 £765 - 3
South East +46 4 £456 -23.96% 7
East of England +31 2 £575 +76.92%
South West - 2 £825 - 3
North East - 1 £475 - 1
OpenAPI
UK

OpenAPI
Co-occurring Skills and Capabilities in England 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 23 (27.71%) Confluence
2 3 (3.61%) Anypoint
2 3 (3.61%) JBoss
2 3 (3.61%) Tomcat
Cloud Services
1 17 (20.48%) Slack
2 16 (19.28%) Cloud Computing
3 12 (14.46%) AWS
4 8 (9.64%) Azure
5 6 (7.23%) GCP
5 6 (7.23%) Serverless
6 5 (6.02%) Figma
6 5 (6.02%) GitHub
7 4 (4.82%) Apigee
7 4 (4.82%) SonarCloud
8 3 (3.61%) Amazon Cognito
8 3 (3.61%) Amazon S3
8 3 (3.61%) Amazon SQS
8 3 (3.61%) AWS Lambda
8 3 (3.61%) Azure DevOps
8 3 (3.61%) Azure Event Grid
8 3 (3.61%) Azure Functions
8 3 (3.61%) SaaS
9 1 (1.20%) npm
Communications & Networking
1 16 (19.28%) HTTP
2 2 (2.41%) 3GPP
2 2 (2.41%) 4G
2 2 (2.41%) 5G
2 2 (2.41%) Wireless
Database & Business Intelligence
1 50 (60.24%) PostgreSQL
2 30 (36.14%) Relational Database
3 24 (28.92%) MongoDB
4 20 (24.10%) MySQL
5 17 (20.48%) Apache Cassandra
6 5 (6.02%) Elasticsearch
7 3 (3.61%) DynamoDB
7 3 (3.61%) Neo4j
7 3 (3.61%) Redis
7 3 (3.61%) SQL Server
8 2 (2.41%) NoSQL
Development Applications
1 51 (61.45%) JUnit
2 30 (36.14%) Gradle
2 30 (36.14%) Jenkins
2 30 (36.14%) Mockito
3 27 (32.53%) JIRA
3 27 (32.53%) Liquibase
4 26 (31.33%) Git
5 17 (20.48%) Cucumber
5 17 (20.48%) Jasmine
6 14 (16.87%) GitLab
7 9 (10.84%) Postman
8 4 (4.82%) Maven
9 3 (3.61%) Bitbucket
9 3 (3.61%) Cypress.io
9 3 (3.61%) Eclipse
9 3 (3.61%) IntelliJ
9 3 (3.61%) Mocha
9 3 (3.61%) Selenium
9 3 (3.61%) SonarQube
9 3 (3.61%) TestNG
General
1 33 (39.76%) Public Sector
2 30 (36.14%) Finance
3 24 (28.92%) Telecoms
4 22 (26.51%) Electronics
4 22 (26.51%) Manufacturing
4 22 (26.51%) Marketing
5 10 (12.05%) Social Skills
6 3 (3.61%) Analytical Skills
7 2 (2.41%) Inclusion and Diversity
8 1 (1.20%) Publishing
Job Titles
1 51 (61.45%) Developer
2 39 (46.99%) Java Developer
3 26 (31.33%) Senior
4 22 (26.51%) Lead
5 18 (21.69%) Senior Developer
6 17 (20.48%) Lead Developer
6 17 (20.48%) Senior Java Developer
7 16 (19.28%) Lead Java Developer
7 16 (19.28%) Software Engineer
8 15 (18.07%) SC Cleared Java Developer
9 14 (16.87%) Java Engineer
10 13 (15.66%) Java Software Engineer
10 13 (15.66%) React Developer
11 11 (13.25%) SC Cleared Software Engineer
12 4 (4.82%) Android Engineer
12 4 (4.82%) Designer
12 4 (4.82%) Senior Android Engineer
13 3 (3.61%) Digital Developer
13 3 (3.61%) JavaScript Engineer
13 3 (3.61%) Lead Software Engineer
Libraries, Frameworks & Software Standards
1 83 (100.00%) Swagger
2 53 (63.86%) Spring Boot
3 51 (61.45%) Spring
4 34 (40.96%) Kafka
5 32 (38.55%) React
6 30 (36.14%) RESTful
7 18 (21.69%) Spring Security
8 16 (19.28%) Spring Batch
9 15 (18.07%) REST
10 10 (12.05%) OAuth
11 6 (7.23%) AngularJS
11 6 (7.23%) HTML
12 5 (6.02%) GraphQL
12 5 (6.02%) Node.js
12 5 (6.02%) OAuth2
13 4 (4.82%) Android Jetpack
13 4 (4.82%) CSS
13 4 (4.82%) Dagger
13 4 (4.82%) Hibernate
13 4 (4.82%) Web Services
Miscellaneous
1 17 (20.48%) Distributed Denial-of-Service
2 7 (8.43%) Mobile App
3 3 (3.61%) Algorithms
3 3 (3.61%) Data Structures
3 3 (3.61%) Enterprise Software
3 3 (3.61%) Vector Graphics
4 2 (2.41%) Cloud Native
4 2 (2.41%) Distributed Systems
4 2 (2.41%) Legacy Applications
4 2 (2.41%) Product Ownership
4 2 (2.41%) Self-Motivation
4 2 (2.41%) Taxonomies
5 1 (1.20%) Onboarding
Operating Systems
1 20 (24.10%) Linux
2 17 (20.48%) Red Hat Enterprise Linux
3 4 (4.82%) Android
4 3 (3.61%) Windows
4 3 (3.61%) Windows Server
Processes & Methodologies
1 61 (73.49%) Microservices
2 57 (68.67%) Containerisation
3 52 (62.65%) CI/CD
4 46 (55.42%) Software Engineering
4 46 (55.42%) TDD
5 44 (53.01%) DevOps
6 39 (46.99%) Agile
7 34 (40.96%) Continuous Integration
8 29 (34.94%) Migration
8 29 (34.94%) Test Automation
9 22 (26.51%) Business Intelligence
9 22 (26.51%) Digital Marketing
9 22 (26.51%) Programme Management
10 21 (25.30%) API Design
11 17 (20.48%) BDD
11 17 (20.48%) OWASP
12 16 (19.28%) Continuous Delivery
12 16 (19.28%) Event-Driven
12 16 (19.28%) Event-Driven Architecture
12 16 (19.28%) Kernel Tuning
Programming Languages
1 62 (74.70%) Java
2 49 (59.04%) SQL
3 31 (37.35%) TypeScript
4 17 (20.48%) Bash
5 11 (13.25%) JavaScript
6 6 (7.23%) C#
6 6 (7.23%) Python
7 5 (6.02%) Go
8 4 (4.82%) Kotlin
9 3 (3.61%) PL/SQL
10 2 (2.41%) C++
Qualifications
1 48 (57.83%) SC Cleared
1 48 (57.83%) Security Cleared
2 3 (3.61%) Degree
3 2 (2.41%) Computer Science Degree
3 2 (2.41%) DV Cleared
4 1 (1.20%) BPSS Clearance
4 1 (1.20%) OCP
4 1 (1.20%) Oracle Certification
Quality Assurance & Compliance
1 5 (6.02%) Accessibility
System Software
1 58 (69.88%) Docker
2 3 (3.61%) Active Directory
Systems Management
1 29 (34.94%) Kubernetes
2 3 (3.61%) Grafana
2 3 (3.61%) Prometheus
2 3 (3.61%) Terraform
3 1 (1.20%) Argo
Vendors
1 22 (26.51%) SAP
2 5 (6.02%) Google
2 5 (6.02%) Microsoft
3 3 (3.61%) MuleSoft
3 3 (3.61%) Salesforce
4 1 (1.20%) Red Hat
4 1 (1.20%) WSO2