Period
to 16 January 2022

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for API Development skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited API Development over the 6 months to 16 January 2022 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

API Development
Central London > City of London
6 months to
16 Jan 2022
Same period 2021 Same period 2020
Rank 154 110 164
Rank change year-on-year -44 +54 +47
Contract jobs citing API Development 30 17 38
As % of all contract jobs advertised in the City of London 0.77% 0.84% 0.76%
As % of the Processes & Methodologies category 0.84% 0.93% 0.85%
Number of daily rates quoted 19 12 32
10th Percentile £425 £478 £350
25th Percentile £464 £500 £407
Median daily rate (50th Percentile) £550 £550 £420
Median % change year-on-year - +30.95% -16.00%
75th Percentile £625 £627 £538
90th Percentile " £688 £556
Central London median daily rate £550 £550 £425
% change year-on-year - +29.41% -15.00%

API Development is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Contract vacancies with a requirement for process or methodology skills 3,554 1,829 4,454
As % of all contract IT jobs advertised in the City of London 90.78% 90.01% 89.40%
Number of daily rates quoted 2,752 1,369 3,497
10th Percentile £369 £313 £319
25th Percentile £470 £413 £413
Median daily rate (50th Percentile) £550 £525 £513
Median % change year-on-year +4.76% +2.44% -
75th Percentile £655 £600 £606
90th Percentile £750 £688 £676
Central London median daily rate £550 £515 £510
% change year-on-year +6.80% +0.98% -0.49%
Number of hourly rates quoted 35 24 49
10th Percentile £18.95 £13.68 £12.03
25th Percentile £27.00 £20.75 £14.25
Median hourly rate £43.00 £26.75 £20.00
Median % change year-on-year +60.75% +33.75% +5.26%
75th Percentile £61.75 £36.69 £25.76
90th Percentile £64.55 £46.00 £52.25
Central London median hourly rate £43.00 £27.00 £20.42
% change year-on-year +59.26% +32.26% +6.05%

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
Contractor Daily Rate Trend in the City of London

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

Daily rate trend for API Development in the City of London

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 16 January 2022.

Daily rate histogram for API Development in the City of London

For the 6 months to 16 January 2022, IT contractor jobs citing API Development also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the City of London region with a requirement for API Development.

1 15 (50.00%) Agile Software Development
2 12 (40.00%) Social Skills
3 10 (33.33%) C#
3 10 (33.33%) .NET
4 9 (30.00%) Scrum
4 9 (30.00%) Software Engineering
5 7 (23.33%) RESTful
5 7 (23.33%) Azure
5 7 (23.33%) AWS
5 7 (23.33%) Analytical Skills
5 7 (23.33%) Microservices
5 7 (23.33%) Full Stack Development
6 6 (20.00%) Java
6 6 (20.00%) Microsoft
7 5 (16.67%) SQL
7 5 (16.67%) JIRA
7 5 (16.67%) Migration
7 5 (16.67%) Finance
7 5 (16.67%) Kubernetes
7 5 (16.67%) API Design
7 5 (16.67%) Runbook
7 5 (16.67%) Collaborative Working
7 5 (16.67%) Problem-Solving
8 4 (13.33%) React
8 4 (13.33%) Greenfield Project
8 4 (13.33%) DevOps
8 4 (13.33%) Docker
8 4 (13.33%) Analytics
8 4 (13.33%) Git (software)
8 4 (13.33%) Degree

API Development
Co-occurring IT Skills in the City of London by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 3 (10.00%) Confluence
1 3 (10.00%) IIS
2 2 (6.67%) CMS
2 2 (6.67%) Headless CMS
3 1 (3.33%) nginx
Business Applications
1 1 (3.33%) Dynamics CRM
Cloud Services
1 7 (23.33%) AWS
1 7 (23.33%) Azure
2 3 (10.00%) Force.com
2 3 (10.00%) GitHub
2 3 (10.00%) Salesforce Service Cloud
3 2 (6.67%) Azure Service Bus
4 1 (3.33%) Azure Functions
4 1 (3.33%) Collibra
4 1 (3.33%) Dynamics 365
4 1 (3.33%) Heroku
4 1 (3.33%) SaaS
4 1 (3.33%) Serverless
Database & Business Intelligence
1 4 (13.33%) SQL Server
2 2 (6.67%) Data Lake
2 2 (6.67%) Parquet
2 2 (6.67%) PostgreSQL
3 1 (3.33%) Amazon Athena
3 1 (3.33%) Amazon Aurora
3 1 (3.33%) Amazon DynamoDB
3 1 (3.33%) Amazon Redshift
3 1 (3.33%) MongoDB
3 1 (3.33%) MySQL
3 1 (3.33%) NoSQL
Development Applications
1 5 (16.67%) JIRA
2 4 (13.33%) Git (software)
3 3 (10.00%) Visual Studio
4 1 (3.33%) Jenkins
4 1 (3.33%) Moq
4 1 (3.33%) MSTest
4 1 (3.33%) NUnit
4 1 (3.33%) Visual Studio Tools for Office
General
1 12 (40.00%) Social Skills
2 7 (23.33%) Analytical Skills
3 5 (16.67%) Finance
4 3 (10.00%) Billing
4 3 (10.00%) Financial Institution
4 3 (10.00%) Legal
5 2 (6.67%) Presentation Skills
6 1 (3.33%) Banking
6 1 (3.33%) Law
Job Titles
1 19 (63.33%) Developer
2 7 (23.33%) Full Stack Developer
3 6 (20.00%) Software Engineer
4 5 (16.67%) C# Software Engineer
4 5 (16.67%) Java Developer
4 5 (16.67%) Senior C# Software Engineer
4 5 (16.67%) Senior Software Engineer
5 3 (10.00%) .NET Developer
5 3 (10.00%) Analyst
5 3 (10.00%) Business Analyst
5 3 (10.00%) Salesforce Developer
5 3 (10.00%) Senior Developer
6 2 (6.67%) Senior Full Stack Developer
7 1 (3.33%) Agile Business Analyst
7 1 (3.33%) Azure Developer
7 1 (3.33%) Designer
7 1 (3.33%) Developer in Test
7 1 (3.33%) Node.js Developer
7 1 (3.33%) Python Developer
7 1 (3.33%) Test Automation Developer
Libraries, Frameworks & Software Standards
1 10 (33.33%) .NET
2 7 (23.33%) RESTful
3 4 (13.33%) HTML
3 4 (13.33%) React
4 3 (10.00%) .NET Framework
4 3 (10.00%) ActiveX
4 3 (10.00%) CSS
4 3 (10.00%) Entity Framework
4 3 (10.00%) Node.js
4 3 (10.00%) OLE
4 3 (10.00%) Visualforce
4 3 (10.00%) Web Services
5 2 (6.67%) .NET Core
5 2 (6.67%) AngularJS
5 2 (6.67%) GraphQL
5 2 (6.67%) HTML5
5 2 (6.67%) JSON
5 2 (6.67%) Redux
5 2 (6.67%) REST
5 2 (6.67%) Ruby on Rails
Miscellaneous
1 4 (13.33%) Greenfield Project
2 3 (10.00%) Hedge funds
3 2 (6.67%) User Experience
Operating Systems
1 2 (6.67%) Linux
2 1 (3.33%) Windows
Processes & Methodologies
1 15 (50.00%) Agile Software Development
2 9 (30.00%) Scrum
2 9 (30.00%) Software Engineering
3 7 (23.33%) Full Stack Development
3 7 (23.33%) Microservices
4 5 (16.67%) API Design
4 5 (16.67%) Collaborative Working
4 5 (16.67%) Migration
4 5 (16.67%) Problem-Solving
4 5 (16.67%) Runbook
5 4 (13.33%) Analytics
5 4 (13.33%) DevOps
6 3 (10.00%) AOP
6 3 (10.00%) Business Analysis
6 3 (10.00%) Configure, Price, Quote (CPQ)
6 3 (10.00%) Data Analytics
6 3 (10.00%) Data Protection
6 3 (10.00%) TDD
7 2 (6.67%) MVC
7 2 (6.67%) Use Case
Programming Languages
1 10 (33.33%) C#
2 6 (20.00%) Java
3 5 (16.67%) SQL
4 3 (10.00%) Apex Code
4 3 (10.00%) JavaScript
4 3 (10.00%) T-SQL
5 2 (6.67%) Python
5 2 (6.67%) Ruby
5 2 (6.67%) TypeScript
Qualifications
1 4 (13.33%) Degree
2 1 (3.33%) BPSS Clearance
2 1 (3.33%) Master's Degree
2 1 (3.33%) SC Cleared
2 1 (3.33%) Security Cleared
Quality Assurance & Compliance
1 3 (10.00%) GDPR
System Software
1 4 (13.33%) Docker
Systems Management
1 5 (16.67%) Kubernetes
2 2 (6.67%) Terraform
3 1 (3.33%) Opscode Chef
Vendors
1 6 (20.00%) Microsoft
2 3 (10.00%) Salesforce.com
2 3 (10.00%) SAP
3 2 (6.67%) Databricks
3 2 (6.67%) MuleSoft
4 1 (3.33%) Oracle