The following table provides summary statistics for contract job vacancies advertised in London with a requirement for Riak skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Riak over the 3 months to 23 June 2017 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.

Riak
England / London
3 months to
23 Jun 2017
Same period 2016 Same period 2015
Rank 416 425 415
Rank change year-on-year +9 -10  
Contract jobs citing Riak 6 2 8
As % of all contract IT jobs advertised in London 0.029% 0.009% 0.034%
As % of the Database & Business Intelligence category 0.12% 0.041% 0.14%
Number of daily rates quoted 5 1 4
Median daily rate £550 £475 £425
Median daily rate % change year-on-year +15.78% +11.76%  
UK excluding London median daily rate £563 £400 -
% change year-on-year +40.75% -  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Riak is in the database and business intelligence skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for database and business intelligence skills.

Contract Database & Business Intelligence Skills
London
Contract job vacancies with a requirement for database and business intelligence skills 4922 4937 5577
As % of all contract IT job vacancies advertised in London 23.80% 22.82% 23.80%
Number of daily rates quoted 3577 3645 3918
Median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.55%  
90% offered a daily rate of more than £365 £335 £300
10% offered a daily rate of more than £625 £625 £600
UK excluding London median daily rate £400 £388 £350
% change year-on-year +3.22% +10.71%  
Number of hourly rates quoted 30 21 51
Median hourly rate £24.66 £35.00 £27.78
Median hourly rate % change year-on-year -29.54% +25.98%  
90% offered a hourly rate of more than £21.33 £16.75 £15.58
10% offered a hourly rate of more than £43.43 £100.00 £55.00
UK excluding London median hourly rate £38.00 £30.35 £26.00
% change year-on-year +25.19% +16.74%  

Riak
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing Riak as a proportion of all contract or permanent IT jobs with a match in the Database & Business Intelligence category.

Job vacancy trend for Riak in London

Riak
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for Riak in London

Riak
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 Riak within the London region over the 3 months to 23 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London -2 1 - -
Riak
England

For the 6 months to 23 June 2017, IT contractor jobs citing Riak also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the London region with a requirement for Riak.

1 8 (72.73%) Java
2 7 (63.64%) MySQL
2 7 (63.64%) MongoDB
2 7 (63.64%) Amazon AWS
2 7 (63.64%) Docker
2 7 (63.64%) DevOps
3 6 (54.55%) Apache Cassandra
3 6 (54.55%) NoSQL
3 6 (54.55%) Linux
3 6 (54.55%) Hibernate
3 6 (54.55%) Spring
4 5 (45.45%) Python
4 5 (45.45%) Data Warehouse
4 5 (45.45%) Hadoop
4 5 (45.45%) Big Data
4 5 (45.45%) Apache Spark
4 5 (45.45%) Kafka
5 4 (36.36%) Relational Database
5 4 (36.36%) Artifactory
5 4 (36.36%) Jenkins
5 4 (36.36%) New Relic
5 4 (36.36%) Open Source
5 4 (36.36%) Redis
5 4 (36.36%) RabbitMQ
5 4 (36.36%) Configuration Management
5 4 (36.36%) Windows
5 4 (36.36%) Tomcat
5 4 (36.36%) SQL
5 4 (36.36%) C#
5 4 (36.36%) TDD

Riak
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 5 (45.45%) Apache Spark
2 4 (36.36%) Apache Solr
2 4 (36.36%) Tomcat
3 3 (27.27%) Apache
3 3 (27.27%) Apache Pig
4 2 (18.18%) Elasticsearch
5 1 (9.09%) IIS
Cloud Services
1 7 (63.64%) Amazon AWS
2 3 (27.27%) AWS CloudFormation
2 3 (27.27%) Datadog
3 2 (18.18%) Amazon EMR
3 2 (18.18%) Amazon Kinesis
3 2 (18.18%) Amazon S3
3 2 (18.18%) Google Cloud Platform
4 1 (9.09%) Amazon EC2
4 1 (9.09%) GitHub
4 1 (9.09%) IaaS
4 1 (9.09%) Microsoft Azure
4 1 (9.09%) Office 365
4 1 (9.09%) PaaS
4 1 (9.09%) Slack
4 1 (9.09%) Trello
Communications & Networking
1 1 (9.09%) DNS
1 1 (9.09%) TCP/IP
Database & Business Intelligence
1 7 (63.64%) MongoDB
1 7 (63.64%) MySQL
2 6 (54.55%) Apache Cassandra
2 6 (54.55%) NoSQL
3 5 (45.45%) Big Data
3 5 (45.45%) Data Warehouse
3 5 (45.45%) Hadoop
4 4 (36.36%) Redis
4 4 (36.36%) Relational Database
5 3 (27.27%) Apache Hive
5 3 (27.27%) Impala
5 3 (27.27%) MarkLogic
5 3 (27.27%) Neo4j
5 3 (27.27%) RDBMS
6 2 (18.18%) Amazon DynamoDB
6 2 (18.18%) Bigtable
6 2 (18.18%) SQL Server
7 1 (9.09%) Data Mining
Development Applications
1 4 (36.36%) Artifactory
1 4 (36.36%) Jenkins
1 4 (36.36%) Team Foundation Server
1 4 (36.36%) TeamCity
2 3 (27.27%) Apache Archiva
2 3 (27.27%) GitLab
2 3 (27.27%) MSI
2 3 (27.27%) NuGet
2 3 (27.27%) Sonatype Nexus
3 2 (18.18%) Git (software)
4 1 (9.09%) Ant
4 1 (9.09%) GoCD
4 1 (9.09%) Maven
4 1 (9.09%) SonarQube
General
1 2 (18.18%) Finance
Job Titles
1 6 (54.55%) Developer
2 4 (36.36%) Java Developer
3 3 (27.27%) Linux/Unix DevOps
3 3 (27.27%) Senior Developer
3 3 (27.27%) Senior DevOps
4 2 (18.18%) Apache Spark Developer
4 2 (18.18%) Big Data Developer
4 2 (18.18%) Consultant
4 2 (18.18%) DevOps Consultant
4 2 (18.18%) DevOps Engineer
4 2 (18.18%) Java Hadoop Developer
4 2 (18.18%) Java Scala Developer
4 2 (18.18%) Linux DevOps Engineer
4 2 (18.18%) Linux Engineer
4 2 (18.18%) Scala Developer
4 2 (18.18%) Senior DevOps Engineer
4 2 (18.18%) Senior Java Developer
4 2 (18.18%) Senior Linux Engineer
4 2 (18.18%) Senior Windows Engineer
4 2 (18.18%) Windows DevOps Engineer
Libraries, Frameworks & Software Standards
1 6 (54.55%) Hibernate
1 6 (54.55%) Spring
2 5 (45.45%) Kafka
3 4 (36.36%) RabbitMQ
4 3 (27.27%) Elastic Stack
4 3 (27.27%) JMS
4 3 (27.27%) Lucene
5 2 (18.18%) .NET
5 2 (18.18%) Samza
5 2 (18.18%) Web Services
6 1 (9.09%) AngularJS
6 1 (9.09%) ASP.NET
6 1 (9.09%) Natural Language Processing
6 1 (9.09%) Node.js
6 1 (9.09%) React
6 1 (9.09%) Ruby on Rails
Miscellaneous
1 3 (27.27%) Algorithms
1 3 (27.27%) Analytical Skills
2 1 (9.09%) Client/Server
2 1 (9.09%) Replication
Operating Systems
1 6 (54.55%) Linux
2 4 (36.36%) CentOS
2 4 (36.36%) Red Hat Enterprise Linux
2 4 (36.36%) Windows
3 3 (27.27%) Unix
Processes & Methodologies
1 7 (63.64%) DevOps
2 4 (36.36%) Configuration Management
2 4 (36.36%) Continuous Delivery
2 4 (36.36%) Continuous Integration
2 4 (36.36%) Open Source
2 4 (36.36%) TDD
3 3 (27.27%) Agile Software Development
3 3 (27.27%) Continuous Deployment
3 3 (27.27%) Data Analysis
3 3 (27.27%) ETL
3 3 (27.27%) Kanban
3 3 (27.27%) Machine Learning
3 3 (27.27%) MapReduce
3 3 (27.27%) Scrum
3 3 (27.27%) Statistical Modelling
4 2 (18.18%) Customer Insight
4 2 (18.18%) Data Engineering
4 2 (18.18%) Digital Transformation Programme
4 2 (18.18%) Microservices
4 2 (18.18%) MVC
Programming Languages
1 8 (72.73%) Java
2 5 (45.45%) Python
3 4 (36.36%) C#
3 4 (36.36%) SQL
4 3 (27.27%) Bash Shell
4 3 (27.27%) Perl
4 3 (27.27%) R
4 3 (27.27%) Scala
5 2 (18.18%) Clojure
5 2 (18.18%) Elixir
5 2 (18.18%) Groovy
5 2 (18.18%) JavaScript
6 1 (9.09%) CoffeeScript
6 1 (9.09%) Erlang
6 1 (9.09%) Ruby
System Software
1 7 (63.64%) Docker
2 1 (9.09%) Postfix
Systems Management
1 3 (27.27%) Ansible
1 3 (27.27%) Hadoop YARN
1 3 (27.27%) Kubernetes
2 2 (18.18%) Terraform
3 1 (9.09%) Icinga
3 1 (9.09%) Opscode Chef
3 1 (9.09%) Puppet
Vendors
1 4 (36.36%) New Relic
2 3 (27.27%) AppDynamics
2 3 (27.27%) Dynatrace
3 2 (18.18%) Cloudera
3 2 (18.18%) Hortonworks
3 2 (18.18%) Oracle
3 2 (18.18%) SaltStack
4 1 (9.09%) Google
4 1 (9.09%) Microsoft