OpenAPI Contracts in the City of London

OpenAPI Specification
Central London > City of London

The table below provides summary statistics for contract job vacancies advertised in the City of 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 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 116 124 167
Rank change year-on-year +8 +43 +20
Contract jobs citing OpenAPI 3 2 5
As % of all contract jobs advertised in the City of London 0.17% 0.091% 0.14%
As % of the Libraries, Frameworks & Software Standards category 0.63% 0.42% 0.48%
Number of daily rates quoted 1 2 1
10th Percentile - - -
25th Percentile - £463 £593
Median daily rate (50th Percentile) £425 £475 £595
Median % change year-on-year -10.53% -20.17% +19.00%
75th Percentile - £488 £598
90th Percentile - - -
Central London median daily rate £425 £475 £595
% change year-on-year -10.53% -20.17% +19.00%

All Software Libraries and Frameworks
City of 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 the City of London.

Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 480 481 1,032
As % of all contract IT jobs advertised in the City of London 27.32% 21.89% 28.38%
Number of daily rates quoted 312 344 669
10th Percentile £413 £400 £425
25th Percentile £463 £463 £506
Median daily rate (50th Percentile) £575 £563 £625
Median % change year-on-year +2.22% -10.00% +4.17%
75th Percentile £688 £688 £738
90th Percentile £775 £775 £825
Central London median daily rate £575 £551 £625
% change year-on-year +4.45% -11.92% +4.17%

OpenAPI
Job Vacancy Trend in the City of London

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

Job vacancy trend for OpenAPI in the City of London

OpenAPI
Contractor Daily Rate Trend in the City of London

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

Daily rate trend for OpenAPI in the City of London

OpenAPI
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 1 (33.33%) Confluence
Cloud Services
1 1 (33.33%) Cloud Computing
1 1 (33.33%) Slack
Communications & Networking
1 1 (33.33%) HTTP
Database & Business Intelligence
1 1 (33.33%) Apache Cassandra
1 1 (33.33%) MongoDB
1 1 (33.33%) MySQL
1 1 (33.33%) PostgreSQL
Development Applications
1 2 (66.67%) JUnit
2 1 (33.33%) Cucumber
2 1 (33.33%) Git
2 1 (33.33%) GitLab
2 1 (33.33%) Jasmine
2 1 (33.33%) JIRA
2 1 (33.33%) Maven
2 1 (33.33%) Postman
General
1 1 (33.33%) Finance
1 1 (33.33%) Public Sector
Job Titles
1 1 (33.33%) Developer
1 1 (33.33%) Java Engineer
1 1 (33.33%) Junior
1 1 (33.33%) Lead
Libraries, Frameworks & Software Standards
1 3 (100.00%) Swagger
2 2 (66.67%) Spring
2 2 (66.67%) Spring Boot
3 1 (33.33%) Apache Camel
3 1 (33.33%) OAuth
3 1 (33.33%) OAuth2
3 1 (33.33%) Quarkus
3 1 (33.33%) REST
3 1 (33.33%) RESTful
3 1 (33.33%) Spring Batch
3 1 (33.33%) Spring Security
3 1 (33.33%) WireMock
Miscellaneous
1 1 (33.33%) Distributed Denial-of-Service
Operating Systems
1 1 (33.33%) Linux
1 1 (33.33%) Red Hat Enterprise Linux
Processes & Methodologies
1 2 (66.67%) API Management
1 2 (66.67%) Containerisation
1 2 (66.67%) Software Engineering
1 2 (66.67%) Test Automation
2 1 (33.33%) Agile
2 1 (33.33%) API Design
2 1 (33.33%) API Development
2 1 (33.33%) API Integration
2 1 (33.33%) BDD
2 1 (33.33%) Cloud Security
2 1 (33.33%) Code Quality
2 1 (33.33%) Cost Reduction
2 1 (33.33%) Decision-Making
2 1 (33.33%) DevOps
2 1 (33.33%) DevSecOps
2 1 (33.33%) High Availability
2 1 (33.33%) Kernel Tuning
2 1 (33.33%) OWASP
2 1 (33.33%) TDD
Programming Languages
1 3 (100.00%) Java
2 2 (66.67%) Python
3 1 (33.33%) Bash
3 1 (33.33%) Go
3 1 (33.33%) JavaScript
3 1 (33.33%) SQL
Qualifications
1 2 (66.67%) SC Cleared
1 2 (66.67%) Security Cleared
Quality Assurance & Compliance
1 1 (33.33%) Accessibility
System Software
1 2 (66.67%) Docker
Systems Management
1 1 (33.33%) Argo
1 1 (33.33%) Kubernetes
Vendors
1 1 (33.33%) WSO2