API Development Contracts in the City of London

API Development
Central London > City of London

The table below provides summary statistics for contract job vacancies advertised in the City of London requiring API Development skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited API Development over the 6 months leading up to 23 August 2025, comparing them to the same period in the previous two years.

6 months to
23 Aug 2025
Same period 2024 Same period 2023
Rank 98 105 157
Rank change year-on-year +7 +52 +10
DemandTrendContract jobs citing API Development 24 15 12
As % of all contract jobs advertised in the City of London 1.31% 0.73% 0.38%
As % of the Processes & Methodologies category 1.39% 0.79% 0.41%
Number of daily rates quoted 11 9 10
10th Percentile £435 £396 £393
25th Percentile £500 £475 £408
Median daily rate (50th Percentile) £585 £575 £472
Median % change year-on-year +1.74% +21.95% -18.00%
75th Percentile £606 £818 £566
90th Percentile £656 £843 £590
Central London median daily rate £585 £563 £550
% change year-on-year +4.00% +2.27% -3.30%

All Process and Methodology Skills
City of London

API Development 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 in the City of London.

DemandTrendContract vacancies with a requirement for process or methodology skills 1,730 1,890 2,895
As % of all contract IT jobs advertised in the City of London 94.23% 91.88% 90.87%
Number of daily rates quoted 1,136 1,254 1,990
10th Percentile £325 £375 £363
25th Percentile £425 £475 £475
Median daily rate (50th Percentile) £550 £575 £600
Median % change year-on-year -4.35% -4.17% +4.35%
75th Percentile £675 £688 £713
90th Percentile £775 £788 £820
Central London median daily rate £550 £575 £598
% change year-on-year -4.35% -3.77% +3.91%
Number of hourly rates quoted 23 16 15
10th Percentile £17.62 £15.00 £14.25
25th Percentile £24.21 £19.79 £14.75
Median hourly rate £28.15 £26.63 £27.50
Median % change year-on-year +5.73% -3.18% -36.40%
75th Percentile £50.25 £82.19 £47.41
90th Percentile £63.75 £137.50 £62.45
Central London median hourly rate £28.79 £26.78 £35.00
% change year-on-year +7.49% -23.49% -17.65%

API Development
Job Vacancy Trend in the City of London

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

Job vacancy trend for API Development in the City of London

API Development
Daily Rate Trend in the City of London

Contractor daily rate distribution trend for jobs in the City of London citing API Development.

Contractor daily rate distribution trend for jobs in the City of London citing API Development

API Development
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing API Development in the City of London over the 6 months to 23 August 2025.

Daily rate histogram for API Development in the City of London

API Development
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:

Business Applications
1 1 (4.17%) Aladdin
1 1 (4.17%) Fidessa
1 1 (4.17%) Maximo
1 1 (4.17%) thinkFolio
Cloud Services
1 11 (45.83%) AWS
2 3 (12.50%) Azure
2 3 (12.50%) Cloud Functions
2 3 (12.50%) GCP
3 2 (8.33%) Azure Cosmos DB
3 2 (8.33%) Azure Service Bus
3 2 (8.33%) Cloud Composer
3 2 (8.33%) Google Compute Engine
3 2 (8.33%) Google Kubernetes Engine
3 2 (8.33%) Serverless
4 1 (4.17%) Azure AKS
4 1 (4.17%) Azure Logic Apps
4 1 (4.17%) Cloud Run
4 1 (4.17%) Entra ID
4 1 (4.17%) GitHub
4 1 (4.17%) GitHub Actions
Communications & Networking
1 1 (4.17%) DNS
1 1 (4.17%) HTTP
1 1 (4.17%) HTTPS
1 1 (4.17%) SSL
Database & Business Intelligence
1 12 (50.00%) PostgreSQL
2 9 (37.50%) NoSQL
3 8 (33.33%) MongoDB
4 3 (12.50%) BigQuery
4 3 (12.50%) SQL Server
5 2 (8.33%) Big Data
5 2 (8.33%) Data Lake
6 1 (4.17%) Data Warehouse
6 1 (4.17%) Tableau
Development Applications
1 1 (4.17%) Git
1 1 (4.17%) JIRA
General
1 8 (33.33%) Public Sector
2 7 (29.17%) Social Skills
3 5 (20.83%) Banking
3 5 (20.83%) Investment Banking
4 4 (16.67%) Corporate Banking
4 4 (16.67%) Retail
4 4 (16.67%) Retail Banking
5 2 (8.33%) Finance
6 1 (4.17%) Advertising
6 1 (4.17%) Analytical Skills
6 1 (4.17%) Financial Institution
Job Titles
1 18 (75.00%) Developer
2 10 (41.67%) Java Developer
3 8 (33.33%) SC Cleared Java Developer
4 4 (16.67%) Full-Stack Developer
4 4 (16.67%) React Developer
4 4 (16.67%) Senior
5 3 (12.50%) Full-Stack Python Developer
5 3 (12.50%) Gen AI Developer
5 3 (12.50%) Python Developer
5 3 (12.50%) SQL Developer
6 2 (8.33%) Data Engineer
6 2 (8.33%) GCP Data Engineer
6 2 (8.33%) GCP Engineer
6 2 (8.33%) Senior Developer
6 2 (8.33%) Senior Java Developer
7 1 (4.17%) Azure Platform Engineer
7 1 (4.17%) C# Developer
7 1 (4.17%) Cloud Platform Engineer
7 1 (4.17%) Python Engineer
7 1 (4.17%) Senior Data Engineer
Libraries, Frameworks & Software Standards
1 12 (50.00%) React
2 10 (41.67%) Spring
2 10 (41.67%) Spring Boot
3 9 (37.50%) Kafka
4 5 (20.83%) JSON
4 5 (20.83%) RESTful
5 4 (16.67%) HTML
5 4 (16.67%) REST
6 3 (12.50%) FastAPI
6 3 (12.50%) Flask
6 3 (12.50%) OAuth
6 3 (12.50%) SQLAlchemy
7 2 (8.33%) .NET
7 2 (8.33%) .NET Core
7 2 (8.33%) .NET Framework
7 2 (8.33%) OAuth2
8 1 (4.17%) CSS
8 1 (4.17%) FIX Protocol
8 1 (4.17%) SOAP
8 1 (4.17%) XML
Miscellaneous
1 4 (16.67%) Cloud Native
1 4 (16.67%) Distributed Systems
2 2 (8.33%) Product Ownership
3 1 (4.17%) Derivative
3 1 (4.17%) Fixed Income
3 1 (4.17%) Foreign Exchange (FX)
3 1 (4.17%) Mobile App
Operating Systems
1 1 (4.17%) Linux
Processes & Methodologies
1 22 (91.67%) Agile
2 14 (58.33%) DevOps
3 12 (50.00%) Microservices
4 10 (41.67%) Clean Code
5 8 (33.33%) SOLID
6 7 (29.17%) Infrastructure as Code
7 6 (25.00%) CI/CD
8 5 (20.83%) Artificial Intelligence
8 5 (20.83%) Data Modelling
8 5 (20.83%) Full-Stack Development
8 5 (20.83%) Performance Optimisation
8 5 (20.83%) Software Engineering
9 4 (16.67%) Wealth Management
10 3 (12.50%) Generative AI
10 3 (12.50%) Infrastructure Automation
10 3 (12.50%) Problem-Solving
10 3 (12.50%) SQL Optimisation
10 3 (12.50%) Test Automation
10 3 (12.50%) Web Development
11 2 (8.33%) API Management
Programming Languages
1 15 (62.50%) SQL
2 14 (58.33%) JavaScript
3 12 (50.00%) Java
4 9 (37.50%) Python
5 2 (8.33%) C#
5 2 (8.33%) Go
5 2 (8.33%) TypeScript
6 1 (4.17%) Scala
Qualifications
1 10 (41.67%) SC Cleared
1 10 (41.67%) Security Cleared
2 8 (33.33%) AWS Certified Developer
3 1 (4.17%) Computer Science Degree
3 1 (4.17%) Degree
Quality Assurance & Compliance
1 2 (8.33%) Data Quality
2 1 (4.17%) Accessibility
2 1 (4.17%) MiFID
System Software
1 2 (8.33%) Docker
Systems Management
1 14 (58.33%) Kubernetes
2 7 (29.17%) Terraform
Vendors
1 4 (16.67%) Oracle
2 3 (12.50%) Google
3 2 (8.33%) Microsoft
4 1 (4.17%) Axway
4 1 (4.17%) Okta
4 1 (4.17%) Portware