Period
to 22 October 2018

The following table provides summary statistics for contract job vacancies advertised in 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 22 October 2018 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
England > London
6 months to
22 Oct 2018
Same period 2017 Same period 2016
Rank 346 331 431
Rank change year-on-year -15 +100 +36
Contract jobs citing API Development 296 310 201
As % of all contract IT jobs advertised in London 0.64% 0.69% 0.45%
As % of the Processes & Methodologies category 0.73% 0.78% 0.52%
Number of daily rates quoted 237 246 141
London median daily rate £500 £500 £475
Median daily rate % change year-on-year - +5.26% +5.56%
10th Percentile £362 £384 £363
90th Percentile £638 £675 £588
England median daily rate £475 £475 £475
Number of hourly rates quoted 0 0 0
London median hourly rate - - -
England median hourly rate - - -

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 London with a requirement for process or methodology skills.

All Process and Methodology Skills
London
Contract vacancies with a requirement for process or methodology skills 40,396 39,675 38,619
As % of all contract IT jobs advertised in London 87.48% 88.03% 87.15%
Number of daily rates quoted 29,171 28,721 27,765
London median daily rate £500 £500 £464
Median daily rate % change year-on-year - +7.76% +3.11%
10th Percentile £325 £313 £300
90th Percentile £675 £663 £643
England median daily rate £473 £450 £425
% change year-on-year +5.00% +5.88% +3.03%
Number of hourly rates quoted 468 362 404
London median hourly rate £21.00 £22.81 £21.50
Median hourly rate % change year-on-year -7.94% +6.09% +7.50%
10th Percentile £13.31 £13.02 £11.43
90th Percentile £52.88 £50.00 £52.50
England median hourly rate £21.00 £24.82 £22.50
% change year-on-year -15.39% +10.31% +3.97%

API Development
Job Vacancy Trend in London

Job postings citing API Development as a percentage of all IT jobs advertised in London.

Job vacancy trend for API Development in London

API Development
Contractor Daily Rate Trend in London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing API Development in London.

Contractor daily rate trend for API Development in London

API Development
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing API Development in London over the 6 months to 22 October 2018.

Contractor daily rate histogram for API Development in London

API Development
Contractor Hourly Rate Trend in London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing API Development in London.

Contractor hourly rate trend for API Development in London

API Development
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 API Development within the London region over the 6 months to 22 October 2018. 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
Job
Vacancies
Central London -24 48 £525 +16.67% 22
South London -14 16 £350 -31.71% 2
West London -3 7 £519 +3.75% 9
East London -20 5 £425 -4.49% 5
North London -1 2 £450 -5.26% 3
API Development
England

For the 6 months to 22 October 2018, 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 London region with a requirement for API Development.

1 151 (51.01%) Java
2 150 (50.68%) Agile Software Development
3 107 (36.15%) REST
4 105 (35.47%) JavaScript
5 92 (31.08%) TDD
6 84 (28.38%) Git (software)
7 83 (28.04%) Jenkins
8 77 (26.01%) Amazon AWS
9 74 (25.00%) RESTful
10 70 (23.65%) BDD
11 68 (22.97%) Node.js
11 68 (22.97%) SQL
12 63 (21.28%) Microservices
13 62 (20.95%) Docker
14 61 (20.61%) HTML
15 59 (19.93%) PostgreSQL
16 57 (19.26%) Maven
16 57 (19.26%) AngularJS
17 55 (18.58%) Microsoft Azure
18 54 (18.24%) CSS
19 51 (17.23%) .NET
20 49 (16.55%) Java 8
21 48 (16.22%) Finance
22 47 (15.88%) DevOps
23 46 (15.54%) HTML5
24 45 (15.20%) Test Automation
24 45 (15.20%) JSON
25 43 (14.53%) React
25 43 (14.53%) API Design
26 41 (13.85%) Spring

API Development
Co-occurring IT Skills in 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 22 (7.43%) Apache Spark
2 19 (6.42%) Tomcat
3 12 (4.05%) Confluence
4 9 (3.04%) SAS
5 8 (2.70%) Apache
5 8 (2.70%) nginx
6 7 (2.36%) WebSphere
7 6 (2.03%) JBoss
8 5 (1.69%) Apache ServiceMix
8 5 (1.69%) IIS
8 5 (1.69%) Mule
9 4 (1.35%) Jupyter
10 3 (1.01%) Alfresco
10 3 (1.01%) Apache Solr
10 3 (1.01%) Jetty
10 3 (1.01%) Oracle Workflow
11 2 (0.68%) Cloud Foundry
11 2 (0.68%) Drupal
11 2 (0.68%) Mule ESB
11 2 (0.68%) Oracle Coherence
Applications
1 8 (2.70%) Microsoft Office
2 6 (2.03%) Fireworks
2 6 (2.03%) Photoshop
3 5 (1.69%) Microsoft Excel
4 3 (1.01%) Chatbot
Business Applications
1 5 (1.69%) SAP Oil and Gas
2 4 (1.35%) Fredhopper
3 2 (0.68%) Oracle Assets
3 2 (0.68%) Oracle ERP
3 2 (0.68%) Oracle General Ledger
3 2 (0.68%) Oracle Payables
3 2 (0.68%) Oracle Receivables
3 2 (0.68%) Oracle Subledger Accounting
3 2 (0.68%) Payment Gateway
4 1 (0.34%) Distributed Ledger
4 1 (0.34%) ION MarketView
4 1 (0.34%) Oracle Financials
Cloud Services
1 77 (26.01%) Amazon AWS
2 55 (18.58%) Microsoft Azure
3 21 (7.09%) GitHub
4 18 (6.08%) Serverless
5 17 (5.74%) Apigee
6 13 (4.39%) Amazon EC2
7 11 (3.72%) AWS Lambda
8 9 (3.04%) Amazon S3
9 8 (2.70%) Cloud Computing
9 8 (2.70%) Google Cloud Platform
9 8 (2.70%) PaaS
9 8 (2.70%) SaaS
10 6 (2.03%) Amazon Kinesis
11 5 (1.69%) Amazon SQS
11 5 (1.69%) Heroku
11 5 (1.69%) npm
11 5 (1.69%) Virtual Private Cloud
12 4 (1.35%) OpenShift
13 3 (1.01%) Amazon ElastiCache
13 3 (1.01%) IaaS
Communications & Networking
1 19 (6.42%) Kerberos
2 16 (5.41%) HTTP
3 14 (4.73%) SSL
4 6 (2.03%) Internet
5 3 (1.01%) SMS
6 2 (0.68%) FIX Connectivity
7 1 (0.34%) BIG-IP
7 1 (0.34%) DNS
7 1 (0.34%) LAN
7 1 (0.34%) WAN
Database & Business Intelligence
1 59 (19.93%) PostgreSQL
2 34 (11.49%) NoSQL
3 27 (9.12%) SQL Server
4 22 (7.43%) MongoDB
5 21 (7.09%) Big Data
6 17 (5.74%) MySQL
7 15 (5.07%) HBase
8 14 (4.73%) Amazon RDS
8 14 (4.73%) Cosmos DB
9 12 (4.05%) Amazon DynamoDB
9 12 (4.05%) Redis
9 12 (4.05%) Relational Database
10 11 (3.72%) Apache Cassandra
11 9 (3.04%) Data Mining
11 9 (3.04%) Hadoop
12 8 (2.70%) Data Warehouse
13 7 (2.36%) Blockchain
13 7 (2.36%) Data Lake
13 7 (2.36%) SQL Server Integration Services
14 5 (1.69%) HDInsight
Development Applications
1 84 (28.38%) Git (software)
2 83 (28.04%) Jenkins
3 57 (19.26%) Maven
4 35 (11.82%) JIRA
5 34 (11.49%) Selenium
6 31 (10.47%) WebDriver
7 29 (9.80%) JUnit
8 22 (7.43%) Mocha
9 16 (5.41%) Mockito
10 15 (5.07%) Artifactory
10 15 (5.07%) webpack
11 14 (4.73%) Bitbucket
12 11 (3.72%) GitLab
13 10 (3.38%) Gradle
14 9 (3.04%) Visual Studio Team System
15 8 (2.70%) Gatling
16 7 (2.36%) Babel
16 7 (2.36%) Gerrit
16 7 (2.36%) Hudson
16 7 (2.36%) Sinon.JS
General
1 48 (16.22%) Finance
2 21 (7.09%) Banking
3 11 (3.72%) Retail
4 9 (3.04%) Marketing
5 6 (2.03%) Legal
6 5 (1.69%) Front Office
7 4 (1.35%) Retail Banking
8 2 (0.68%) Advertising
8 2 (0.68%) Back Office
8 2 (0.68%) General Ledger
8 2 (0.68%) Telecoms
9 1 (0.34%) Automotive
9 1 (0.34%) Electronics
9 1 (0.34%) Financial Institution
9 1 (0.34%) Law
9 1 (0.34%) Manufacturing
9 1 (0.34%) Publishing
9 1 (0.34%) Russian Language
9 1 (0.34%) Spanish Language
Job Titles
1 231 (78.04%) Developer
2 71 (23.99%) Java Developer
3 30 (10.14%) Senior Developer
4 29 (9.80%) .NET Developer
5 28 (9.46%) Node.js Developer
6 27 (9.12%) Full Stack Developer
7 24 (8.11%) C# Developer
8 19 (6.42%) JavaScript Developer
8 19 (6.42%) React Developer
9 18 (6.08%) Senior Java Developer
10 17 (5.74%) Architect
11 16 (5.41%) Front End Developer (Client-Side Developer)
12 15 (5.07%) Backend Developer
13 12 (4.05%) Angular Developer
13 12 (4.05%) Automation Tester
13 12 (4.05%) C# .NET Developer
13 12 (4.05%) Tester
14 9 (3.04%) Azure Developer
14 9 (3.04%) Big Data Developer
14 9 (3.04%) Lead Developer
Libraries, Frameworks & Software Standards
1 107 (36.15%) REST
2 74 (25.00%) RESTful
3 68 (22.97%) Node.js
4 61 (20.61%) HTML
5 57 (19.26%) AngularJS
6 54 (18.24%) CSS
7 51 (17.23%) .NET
8 46 (15.54%) HTML5
9 45 (15.20%) JSON
10 43 (14.53%) React
11 41 (13.85%) Spring
12 33 (11.15%) Web Services
13 27 (9.12%) ASP.NET
14 26 (8.78%) .NET Core
15 25 (8.45%) ASP.NET Web API
16 24 (8.11%) LESS
16 24 (8.11%) SAML
16 24 (8.11%) Spring Boot
17 23 (7.77%) Kafka
18 22 (7.43%) CSS3
Miscellaneous
1 22 (7.43%) Fintech
2 19 (6.42%) Self-Motivation
3 17 (5.74%) Computer Science
4 15 (5.07%) Analytical Skills
5 14 (4.73%) Greenfield Project
5 14 (4.73%) User Experience
6 11 (3.72%) Mobile App
7 9 (3.04%) Algorithms
7 9 (3.04%) PKI
8 5 (1.69%) Foreign Exchange (FX)
9 4 (1.35%) Enterprise Software
9 4 (1.35%) Equities
10 3 (1.01%) Data Structures
10 3 (1.01%) iPad
10 3 (1.01%) iPhone
11 2 (0.68%) DataPower
11 2 (0.68%) Derivative
11 2 (0.68%) Equity Derivative
11 2 (0.68%) Mainframe
11 2 (0.68%) Market Risk
Operating Systems
1 30 (10.14%) Linux
2 17 (5.74%) Unix
3 12 (4.05%) Windows
4 10 (3.38%) Ubuntu
5 8 (2.70%) Apple iOS
6 7 (2.36%) Android
7 4 (1.35%) Red Hat Enterprise Linux
8 3 (1.01%) Mac OS X
9 1 (0.34%) VMS
Processes & Methodologies
1 150 (50.68%) Agile Software Development
2 92 (31.08%) TDD
3 70 (23.65%) BDD
4 63 (21.28%) Microservices
5 47 (15.88%) DevOps
6 45 (15.20%) Test Automation
7 43 (14.53%) API Design
8 39 (13.18%) MVC
9 38 (12.84%) Continuous Integration
10 36 (12.16%) Web Development
11 34 (11.49%) SOA
12 33 (11.15%) Continuous Delivery
12 33 (11.15%) Scrum
13 28 (9.46%) API Testing
13 28 (9.46%) Software Engineering
14 26 (8.78%) E-Commerce
14 26 (8.78%) Front End Development
15 22 (7.43%) Data Science
16 20 (6.76%) Multithreading
17 19 (6.42%) Identity Management
Programming Languages
1 151 (51.01%) Java
2 105 (35.47%) JavaScript
3 68 (22.97%) SQL
4 49 (16.55%) Java 8
5 41 (13.85%) C#
6 38 (12.84%) Python
7 33 (11.15%) ES6
8 26 (8.78%) TypeScript
9 13 (4.39%) PHP
10 8 (2.70%) Scala
11 7 (2.36%) PowerShell
12 6 (2.03%) PHP 7
12 6 (2.03%) PL/SQL
12 6 (2.03%) R
12 6 (2.03%) Ruby
13 5 (1.69%) MATLAB
13 5 (1.69%) Shell Script
13 5 (1.69%) T-SQL
14 4 (1.35%) C++
15 3 (1.01%) VB.NET
Qualifications
1 27 (9.12%) Security Cleared
2 26 (8.78%) SC Cleared
3 17 (5.74%) Degree
4 8 (2.70%) Computer Science Degree
5 1 (0.34%) MCP
5 1 (0.34%) MCPD
5 1 (0.34%) MCTS
5 1 (0.34%) Microsoft Certification
5 1 (0.34%) Numerate Degree
Quality Assurance & Compliance
1 14 (4.73%) QA
2 7 (2.36%) GDPR
System Software
1 62 (20.95%) Docker
2 5 (1.69%) Apache Flume
3 4 (1.35%) Active Directory
3 4 (1.35%) VMware Infrastructure
4 2 (0.68%) Virtual Machines
Systems Management
1 34 (11.49%) Kubernetes
2 19 (6.42%) Single Sign-On
3 16 (5.41%) Ansible
4 14 (4.73%) Puppet
5 13 (4.39%) Grafana
6 11 (3.72%) Terraform
7 7 (2.36%) CA Single Sign-On
8 5 (1.69%) Kibana
9 1 (0.34%) Business Desktop Deployment
9 1 (0.34%) Docker Swarm
9 1 (0.34%) HAProxy
9 1 (0.34%) Prometheus
Vendors
1 29 (9.80%) Microsoft
2 24 (8.11%) Google
3 18 (6.08%) Oracle
4 12 (4.05%) MuleSoft
5 8 (2.70%) IBM
6 7 (2.36%) Adobe
6 7 (2.36%) Axway
7 6 (2.03%) Atlassian
7 6 (2.03%) SAP
8 5 (1.69%) Alteryx
8 5 (1.69%) Informatica
8 5 (1.69%) Tableau
8 5 (1.69%) Talend
8 5 (1.69%) WSO2
9 4 (1.35%) VMware
10 3 (1.01%) Apple
10 3 (1.01%) Perforce
10 3 (1.01%) Splunk
10 3 (1.01%) TIBCO
11 2 (0.68%) Northgate