Period
to 22 July 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 July 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 Jul 2018
Same period 2017 Same period 2016
Rank 357 387 424
Rank change year-on-year +30 +37 +94
Contract jobs citing API Development 301 212 195
As % of all contract IT jobs advertised in London 0.65% 0.50% 0.43%
As % of the Processes & Methodologies category 0.75% 0.58% 0.50%
Number of daily rates quoted 220 170 146
London median daily rate £500 £500 £475
Median daily rate % change year-on-year - +5.26% +18.75%
10th Percentile £388 £387 £354
90th Percentile £638 £638 £569
England median daily rate £475 £488 £450
% change year-on-year -2.56% +8.33% +20.00%
Number of hourly rates quoted 0 1 0
London median hourly rate - £27.50 -
England median hourly rate £80.50 £33.25 -
% change year-on-year +142.11% - -

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 40,265 36,720 39,326
As % of all contract IT jobs advertised in London 87.31% 87.00% 86.38%
Number of daily rates quoted 29,208 26,229 28,471
London median daily rate £500 £488 £463
Median daily rate % change year-on-year +2.56% +5.41% +2.78%
10th Percentile £325 £313 £300
90th Percentile £675 £656 £650
England median daily rate £463 £450 £425
% change year-on-year +2.78% +5.88% +4.94%
Number of hourly rates quoted 550 388 348
London median hourly rate £25.00 £23.63 £21.42
Median hourly rate % change year-on-year +5.82% +10.29% +9.85%
10th Percentile £14.00 £12.88 £11.25
90th Percentile £53.84 £51.48 £51.38
England median hourly rate £22.50 £24.49 £23.75
% change year-on-year -8.11% +3.09% +12.71%

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 July 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 July 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 +3 65 £500 +5.26% 16
South London -27 17 £360 -20.00% 2
West London -33 6 £450 -10.00% 14
East London -16 4 - - 3
API Development
England

For the 6 months to 22 July 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.

1 181 (60.13%) Java
2 141 (46.84%) Agile Software Development
3 121 (40.20%) REST
4 102 (33.89%) JavaScript
5 86 (28.57%) Amazon AWS
6 84 (27.91%) RESTful
7 83 (27.57%) TDD
8 82 (27.24%) SQL
9 71 (23.59%) Jenkins
10 70 (23.26%) Node.js
11 62 (20.60%) PostgreSQL
12 61 (20.27%) Git (software)
13 57 (18.94%) Scrum
14 56 (18.60%) Web Services
15 55 (18.27%) JSON
15 55 (18.27%) Microservices
16 52 (17.28%) Docker
16 52 (17.28%) .NET
17 51 (16.94%) BDD
18 50 (16.61%) Maven
18 50 (16.61%) Java 8
19 49 (16.28%) Microsoft Azure
20 48 (15.95%) AngularJS
20 48 (15.95%) C#
21 47 (15.61%) HTML
22 46 (15.28%) Linux
22 46 (15.28%) Finance
23 45 (14.95%) Spring
24 43 (14.29%) Python
25 41 (13.62%) SQL Server

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 21 (6.98%) Apache Spark
2 18 (5.98%) Tomcat
3 10 (3.32%) Confluence
4 9 (2.99%) Apache
5 7 (2.33%) nginx
5 7 (2.33%) WebSphere
6 5 (1.66%) Elasticsearch
6 5 (1.66%) JBoss
6 5 (1.66%) Jupyter
6 5 (1.66%) Mongoose
7 4 (1.33%) Oracle SOA Suite
7 4 (1.33%) SAS
8 3 (1.00%) Alfresco
8 3 (1.00%) Anypoint
8 3 (1.00%) CMS
8 3 (1.00%) IIS
8 3 (1.00%) Jetty
8 3 (1.00%) Oracle Workflow
8 3 (1.00%) WebLogic
9 2 (0.66%) Drupal
Applications
1 6 (1.99%) Fireworks
1 6 (1.99%) Photoshop
2 3 (1.00%) Microsoft Excel
2 3 (1.00%) Microsoft Office
3 1 (0.33%) Chatbot
Business Applications
1 9 (2.99%) SAP Oil and Gas
2 4 (1.33%) Payment Gateway
3 1 (0.33%) BusinessWorks
3 1 (0.33%) Distributed Ledger
3 1 (0.33%) Oracle Assets
3 1 (0.33%) Oracle EBS
3 1 (0.33%) Oracle EBS R12
3 1 (0.33%) Oracle iProcurement
3 1 (0.33%) Oracle Payables
3 1 (0.33%) Oracle Receivables
3 1 (0.33%) SunGard Martini
Cloud Services
1 86 (28.57%) Amazon AWS
2 49 (16.28%) Microsoft Azure
3 19 (6.31%) Google Cloud Platform
4 12 (3.99%) Amazon EC2
5 8 (2.66%) Amazon S3
5 8 (2.66%) GitHub
6 7 (2.33%) Serverless
7 6 (1.99%) Heroku
8 5 (1.66%) Amazon CloudWatch
8 5 (1.66%) Azure Active Directory
8 5 (1.66%) SaaS
9 4 (1.33%) Amazon SQS
10 3 (1.00%) Amazon ElastiCache
10 3 (1.00%) AWS Lambda
10 3 (1.00%) Cloud Computing
10 3 (1.00%) IaaS
11 2 (0.66%) Virtual Private Cloud
12 1 (0.33%) Azure Data Factory
12 1 (0.33%) PaaS
12 1 (0.33%) Sumo Logic
Communications & Networking
1 27 (8.97%) HTTP
2 16 (5.32%) SSL
3 10 (3.32%) Kerberos
4 6 (1.99%) Internet
4 6 (1.99%) SMS
5 3 (1.00%) DNS
5 3 (1.00%) X.509
6 2 (0.66%) FIX Connectivity
Database & Business Intelligence
1 62 (20.60%) PostgreSQL
2 41 (13.62%) SQL Server
3 27 (8.97%) MySQL
3 27 (8.97%) NoSQL
4 25 (8.31%) MongoDB
5 22 (7.31%) Cosmos DB
6 20 (6.64%) Big Data
6 20 (6.64%) HBase
7 18 (5.98%) Redis
8 17 (5.65%) Hadoop
8 17 (5.65%) Relational Database
9 15 (4.98%) Power BI
10 14 (4.65%) Data Lake
11 13 (4.32%) HDInsight
11 13 (4.32%) SAP HANA
12 12 (3.99%) Apache Cassandra
12 12 (3.99%) SAP BW
12 12 (3.99%) Spotfire
13 9 (2.99%) Data Mining
13 9 (2.99%) SQL Server Integration Services
Development Applications
1 71 (23.59%) Jenkins
2 61 (20.27%) Git (software)
3 50 (16.61%) Maven
4 32 (10.63%) Selenium
5 29 (9.63%) WebDriver
6 28 (9.30%) JIRA
7 27 (8.97%) JUnit
8 14 (4.65%) Artifactory
9 12 (3.99%) GitLab
10 11 (3.65%) Bitbucket
10 11 (3.65%) Gradle
11 10 (3.32%) Mocha
11 10 (3.32%) Mockito
12 9 (2.99%) Gatling
12 9 (2.99%) Zephyr
13 6 (1.99%) Hudson
13 6 (1.99%) IntelliJ
14 5 (1.66%) Team Foundation Server
14 5 (1.66%) Visual Studio Team System
14 5 (1.66%) webpack
General
1 46 (15.28%) Finance
2 24 (7.97%) Banking
3 8 (2.66%) Games
3 8 (2.66%) Legal
3 8 (2.66%) Retail
4 7 (2.33%) Telecoms
5 4 (1.33%) Financial Institution
5 4 (1.33%) Law
5 4 (1.33%) Marketing
5 4 (1.33%) Retail Banking
6 3 (1.00%) Front Office
7 2 (0.66%) Advertising
8 1 (0.33%) Electronics
8 1 (0.33%) General Ledger
8 1 (0.33%) Investment Banking
8 1 (0.33%) Manufacturing
8 1 (0.33%) Russian Language
8 1 (0.33%) Spanish Language
Job Titles
1 233 (77.41%) Developer
2 91 (30.23%) Java Developer
3 25 (8.31%) .NET Developer
3 25 (8.31%) Lead Developer
4 22 (7.31%) Lead Java Developer
4 22 (7.31%) Node.js Developer
5 21 (6.98%) JavaScript Developer
6 20 (6.64%) C# Developer
7 19 (6.31%) Architect
8 15 (4.98%) Senior Developer
9 13 (4.32%) Data Engineer
9 13 (4.32%) Full Stack Developer
10 12 (3.99%) Backend Developer
11 11 (3.65%) C# .NET Developer
12 10 (3.32%) Angular Developer
12 10 (3.32%) Automation Tester
12 10 (3.32%) Senior Java Developer
12 10 (3.32%) Tester
13 9 (2.99%) AWS Developer
13 9 (2.99%) Python Developer
Libraries, Frameworks & Software Standards
1 121 (40.20%) REST
2 84 (27.91%) RESTful
3 70 (23.26%) Node.js
4 56 (18.60%) Web Services
5 55 (18.27%) JSON
6 52 (17.28%) .NET
7 48 (15.95%) AngularJS
8 47 (15.61%) HTML
9 45 (14.95%) Spring
10 41 (13.62%) CSS
11 39 (12.96%) XML
12 34 (11.30%) HTML5
13 33 (10.96%) ASP.NET Web API
14 25 (8.31%) OAuth
15 24 (7.97%) LESS
16 23 (7.64%) Swagger
17 22 (7.31%) JMS
17 22 (7.31%) SOAP
18 21 (6.98%) React
18 21 (6.98%) SAML
Miscellaneous
1 19 (6.31%) User Experience
2 18 (5.98%) Analytical Skills
2 18 (5.98%) Computer Science
2 18 (5.98%) Mobile App
3 14 (4.65%) Fintech
4 13 (4.32%) Self-Motivation
5 12 (3.99%) Greenfield Project
6 9 (2.99%) Enterprise Software
7 8 (2.66%) Algorithms
8 6 (1.99%) PKI
9 5 (1.66%) Cloud Native
9 5 (1.66%) Virtual Team
10 4 (1.33%) Data Structures
11 3 (1.00%) Derivative
11 3 (1.00%) Equity Derivative
11 3 (1.00%) Foreign Exchange (FX)
11 3 (1.00%) Management Information System
11 3 (1.00%) Mobile Payment
11 3 (1.00%) Reference Data
12 2 (0.66%) Mainframe
Operating Systems
1 46 (15.28%) Linux
2 18 (5.98%) Android
3 15 (4.98%) Windows
4 13 (4.32%) Unix
5 12 (3.99%) Ubuntu
6 9 (2.99%) Apple iOS
7 5 (1.66%) Red Hat Enterprise Linux
8 2 (0.66%) AIX
9 1 (0.33%) Embedded Linux
9 1 (0.33%) Mac OS
9 1 (0.33%) VMS
Processes & Methodologies
1 141 (46.84%) Agile Software Development
2 83 (27.57%) TDD
3 57 (18.94%) Scrum
4 55 (18.27%) Microservices
5 51 (16.94%) BDD
6 38 (12.62%) API Design
7 36 (11.96%) DevOps
8 33 (10.96%) Test Automation
9 32 (10.63%) Continuous Integration
9 32 (10.63%) MVC
9 32 (10.63%) SOA
10 30 (9.97%) Web Development
11 29 (9.63%) Kanban
12 26 (8.64%) API Testing
13 23 (7.64%) Problem-Solving
14 21 (6.98%) Continuous Delivery
15 18 (5.98%) Data Science
15 18 (5.98%) Front End Development
16 17 (5.65%) SDLC
16 17 (5.65%) Software Engineering
Programming Languages
1 181 (60.13%) Java
2 102 (33.89%) JavaScript
3 82 (27.24%) SQL
4 50 (16.61%) Java 8
5 48 (15.95%) C#
6 43 (14.29%) Python
7 25 (8.31%) ES6
8 11 (3.65%) Ruby
8 11 (3.65%) Scala
8 11 (3.65%) TypeScript
9 8 (2.66%) Kotlin
9 8 (2.66%) PHP
10 7 (2.33%) PowerShell
11 6 (1.99%) XPath
12 5 (1.66%) C++
12 5 (1.66%) PL/SQL
12 5 (1.66%) R
12 5 (1.66%) T-SQL
13 4 (1.33%) Groovy
13 4 (1.33%) MATLAB
Qualifications
1 30 (9.97%) SC Cleared
1 30 (9.97%) Security Cleared
2 19 (6.31%) Degree
3 12 (3.99%) Computer Science Degree
4 3 (1.00%) CTC Cleared
5 2 (0.66%) AWS Certification
5 2 (0.66%) Master's Degree
6 1 (0.33%) MCP
6 1 (0.33%) MCPD
6 1 (0.33%) MCTS
6 1 (0.33%) Microsoft Certification
Quality Assurance & Compliance
1 10 (3.32%) QA
2 9 (2.99%) GCP
3 7 (2.33%) GDPR
4 1 (0.33%) ISO/IEC 27001
4 1 (0.33%) PSD2
System Software
1 52 (17.28%) Docker
2 6 (1.99%) Active Directory
3 4 (1.33%) Apache Flume
4 1 (0.33%) Firmware
4 1 (0.33%) Virtual Machines
Systems Management
1 31 (10.30%) Kubernetes
2 13 (4.32%) Grafana
2 13 (4.32%) Single Sign-On
3 11 (3.65%) Puppet
4 10 (3.32%) Kibana
5 6 (1.99%) Ansible
6 5 (1.66%) Terraform
7 4 (1.33%) CA Single Sign-On
8 2 (0.66%) Opscode Chef
9 1 (0.33%) Business Desktop Deployment
9 1 (0.33%) Docker Swarm
9 1 (0.33%) logstash
9 1 (0.33%) TIBCO Hawk
Vendors
1 32 (10.63%) Apigee
2 31 (10.30%) Microsoft
3 23 (7.64%) Google
4 15 (4.98%) TIBCO
5 14 (4.65%) Oracle
5 14 (4.65%) SAP
6 13 (4.32%) Alteryx
6 13 (4.32%) CA
7 11 (3.65%) IBM
8 10 (3.32%) Atlassian
9 8 (2.66%) MuleSoft
10 6 (1.99%) Adobe
11 5 (1.66%) Kony
12 4 (1.33%) Axway
12 4 (1.33%) Informatica
12 4 (1.33%) Splunk
12 4 (1.33%) Tableau
12 4 (1.33%) Talend
13 3 (1.00%) Capita
13 3 (1.00%) Perforce