The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Opscode Chef skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Opscode Chef over the 3 months to 28 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.

Opscode Chef
London / City of London
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 124 69 122
Rank change year-on-year -55 +53  
Contract jobs citing Opscode Chef 42 102 84
As % of all contract IT jobs advertised in the City of London 1.29% 3.03% 1.46%
As % of the Systems Management category 12.50% 24.64% 19.05%
Number of daily rates quoted 34 90 79
Median daily rate £577 £525 £500
Median daily rate % change year-on-year +9.95% +5.00%  
90% offered a daily rate of more than £479 £425 £325
10% offered a daily rate of more than £618 £628 £625
UK excluding London median daily rate £500 £450 £415
% change year-on-year +11.11% +8.43%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - £47.50

Opscode Chef is in the systems management skills category. The next 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 systems management skills.

Systems Management Skills
City of London
Contract job vacancies with a requirement for systems management skills 336 414 441
As % of all contract IT job vacancies advertised in the City of London 10.30% 12.30% 7.68%
Number of daily rates quoted 276 340 337
Median daily rate £525 £475 £450
Median daily rate % change year-on-year +10.52% +5.55%  
90% offered a daily rate of more than £325 £325 £310
10% offered a daily rate of more than £625 £625 £600
UK excluding London median daily rate £450 £400 £378
% change year-on-year +12.50% +5.76%  
Number of hourly rates quoted 5 5 7
Median hourly rate £24.36 £19.00 £28.30
Median hourly rate % change year-on-year +28.21% -32.86%  
90% offered a hourly rate of more than £15.80 £19.00 £14.50
10% offered a hourly rate of more than £24.86 £22.00 £37.00
UK excluding London median hourly rate £17.50 £34.10 £20.50
% change year-on-year -48.68% +66.34%  

Opscode Chef
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing Opscode Chef as a proportion of all contract or permanent IT jobs with a match in the Systems Management category.

Job vacancy trend for Opscode Chef in the City of London

Opscode Chef
Contractor Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Opscode Chef in the City of London.

Contractor daily rate trend for Opscode Chef in the City of London

Opscode Chef
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Opscode Chef in the City of London over the 3 months to 28 June 2017.

Contractor daily rate histogram for Opscode Chef in the City of London

For the 6 months to 28 June 2017, IT contractor jobs citing Opscode Chef 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 City of London region with a requirement for Opscode Chef.

1 75 (77.32%) DevOps
2 64 (65.98%) Puppet
3 58 (59.79%) Linux
4 56 (57.73%) Ansible
5 49 (50.52%) Java
6 43 (44.33%) Amazon AWS
7 40 (41.24%) Python
8 39 (40.21%) Agile Software Development
9 31 (31.96%) Continuous Integration
10 27 (27.84%) Unix
10 27 (27.84%) Continuous Delivery
11 26 (26.80%) Jenkins
12 25 (25.77%) Open Source
13 24 (24.74%) Spring
14 23 (23.71%) TDD
14 23 (23.71%) Bash Shell
15 22 (22.68%) Perl
16 19 (19.59%) Configuration Management
16 19 (19.59%) Ruby
16 19 (19.59%) Docker
17 18 (18.56%) E-Commerce
18 17 (17.53%) NoSQL
18 17 (17.53%) Load Balancing
19 15 (15.46%) PowerShell
19 15 (15.46%) OO
19 15 (15.46%) Finance
20 14 (14.43%) Apache Cassandra
20 14 (14.43%) Mentoring
21 13 (13.40%) Greenfield Project
21 13 (13.40%) Service Design

Opscode Chef
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 8 (8.25%) Confluence
2 6 (6.19%) nginx
3 5 (5.15%) IIS
3 5 (5.15%) JBoss
3 5 (5.15%) Tomcat
4 3 (3.09%) OpenStack
5 2 (2.06%) Elasticsearch
5 2 (2.06%) MQSeries
6 1 (1.03%) Cloud Foundry
6 1 (1.03%) CloudStack
Cloud Services
1 43 (44.33%) Amazon AWS
2 13 (13.40%) Microsoft Azure
3 7 (7.22%) IaaS
4 5 (5.15%) PaaS
5 4 (4.12%) Akamai
5 4 (4.12%) Slack
6 3 (3.09%) AWS CloudFormation
7 1 (1.03%) Amazon EC2
7 1 (1.03%) AWS Elastic Beanstalk
7 1 (1.03%) AWS Lambda
7 1 (1.03%) BrowserStack
7 1 (1.03%) GitHub
7 1 (1.03%) MailChimp
7 1 (1.03%) SaaS
Communications & Networking
1 7 (7.22%) DNS
2 6 (6.19%) TCP/IP
3 5 (5.15%) Firewall
3 5 (5.15%) HTTP
4 4 (4.12%) DHCP
4 4 (4.12%) NAS
4 4 (4.12%) SAN
4 4 (4.12%) SMTP
5 3 (3.09%) Ethernet
5 3 (3.09%) Internet
6 2 (2.06%) HTTPS
6 2 (2.06%) LDAP
7 1 (1.03%) Cisco IOS
7 1 (1.03%) Fibre Channel
7 1 (1.03%) Intranet
7 1 (1.03%) IPsec
7 1 (1.03%) iSCSI
7 1 (1.03%) Network Security
7 1 (1.03%) NX-OS
7 1 (1.03%) SSL
Database & Business Intelligence
1 17 (17.53%) NoSQL
2 14 (14.43%) Apache Cassandra
3 13 (13.40%) Big Data
4 8 (8.25%) MySQL
5 7 (7.22%) Hazelcast
6 4 (4.12%) MongoDB
6 4 (4.12%) PostgreSQL
7 3 (3.09%) MariaDB
7 3 (3.09%) Redis
7 3 (3.09%) Relational Database
8 2 (2.06%) RDBMS
8 2 (2.06%) SQL Server
9 1 (1.03%) Oracle Database
Development Applications
1 26 (26.80%) Jenkins
2 13 (13.40%) Git (software)
3 10 (10.31%) JIRA
4 7 (7.22%) Subversion
5 6 (6.19%) Maven
6 3 (3.09%) Gradle
6 3 (3.09%) Hudson
7 2 (2.06%) Grunt
7 2 (2.06%) gulp
7 2 (2.06%) IBM UrbanCode
7 2 (2.06%) JUnit
7 2 (2.06%) Selenium
7 2 (2.06%) Sonatype Nexus
7 2 (2.06%) Team Foundation Server
8 1 (1.03%) ClearCase
8 1 (1.03%) CruiseControl
8 1 (1.03%) Eclipse
8 1 (1.03%) HP UFT
8 1 (1.03%) IntelliJ
8 1 (1.03%) NetBeans
General
1 15 (15.46%) Finance
2 5 (5.15%) Banking
3 3 (3.09%) Telecoms
4 1 (1.03%) Marketing
4 1 (1.03%) Retail
4 1 (1.03%) Retail Banking
Job Titles
1 38 (39.18%) Developer
2 34 (35.05%) DevOps Engineer
3 33 (34.02%) Java Developer
4 26 (26.80%) AWS DevOps
5 23 (23.71%) DevOps Developer
6 22 (22.68%) AWS Developer
7 17 (17.53%) AWS Engineer
8 15 (15.46%) Automation Engineer
9 14 (14.43%) AWS DevOps Engineer
10 13 (13.40%) Java Engineer
10 13 (13.40%) Senior Developer
10 13 (13.40%) Senior Java Developer
11 11 (11.34%) Automation Developer
11 11 (11.34%) Senior DevOps
12 9 (9.28%) Cloud Engineer
13 4 (4.12%) Analyst
13 4 (4.12%) Azure Engineer
13 4 (4.12%) DBA
13 4 (4.12%) Linux Engineer
13 4 (4.12%) Unix Analyst
Libraries, Frameworks & Software Standards
1 24 (24.74%) Spring
2 12 (12.37%) Web Services
3 11 (11.34%) REST
4 8 (8.25%) SOAP
5 7 (7.22%) .NET
6 6 (6.19%) XML
7 5 (5.15%) Dropwizard
7 5 (5.15%) Guava
8 4 (4.12%) React
8 4 (4.12%) XSL
9 3 (3.09%) AngularJS
9 3 (3.09%) CSS
9 3 (3.09%) HTML
9 3 (3.09%) LAMP
9 3 (3.09%) Node.js
9 3 (3.09%) Spring MVC
10 2 (2.06%) Akka
10 2 (2.06%) RabbitMQ
10 2 (2.06%) Spring Boot
10 2 (2.06%) Spring Cloud
Miscellaneous
1 13 (13.40%) Client/Server
1 13 (13.40%) Greenfield Project
2 8 (8.25%) Analytical Skills
3 5 (5.15%) Fintech
4 4 (4.12%) Data Centre
4 4 (4.12%) Enterprise Software
4 4 (4.12%) Replication
5 3 (3.09%) Public Cloud
5 3 (3.09%) User Experience
6 2 (2.06%) Blog
6 2 (2.06%) Clustering
6 2 (2.06%) Data Structures
6 2 (2.06%) PKI
7 1 (1.03%) Computer Science
7 1 (1.03%) Derivative
7 1 (1.03%) Enterprise Storage
7 1 (1.03%) Management Information System
7 1 (1.03%) Mobile App
7 1 (1.03%) NHS
7 1 (1.03%) Reference Data
Operating Systems
1 58 (59.79%) Linux
2 27 (27.84%) Unix
3 12 (12.37%) Windows
4 9 (9.28%) Red Hat Enterprise Linux
5 5 (5.15%) CentOS
6 4 (4.12%) Solaris
7 3 (3.09%) Windows Server
8 2 (2.06%) CoreOS
8 2 (2.06%) Ubuntu
9 1 (1.03%) Data ONTAP
Processes & Methodologies
1 75 (77.32%) DevOps
2 39 (40.21%) Agile Software Development
3 31 (31.96%) Continuous Integration
4 27 (27.84%) Continuous Delivery
5 25 (25.77%) Open Source
6 23 (23.71%) TDD
7 19 (19.59%) Configuration Management
8 18 (18.56%) E-Commerce
9 17 (17.53%) Load Balancing
10 15 (15.46%) OO
11 14 (14.43%) Mentoring
12 13 (13.40%) Service Design
13 9 (9.28%) Software Engineering
13 9 (9.28%) Test Automation
14 8 (8.25%) BDD
14 8 (8.25%) Continuous Deployment
15 6 (6.19%) Microservices
16 5 (5.15%) API Design
16 5 (5.15%) Build Automation
16 5 (5.15%) Migration
Programming Languages
1 49 (50.52%) Java
2 40 (41.24%) Python
3 23 (23.71%) Bash Shell
4 22 (22.68%) Perl
5 19 (19.59%) Ruby
6 15 (15.46%) PowerShell
7 9 (9.28%) JavaScript
8 7 (7.22%) Scala
9 6 (6.19%) Shell Script
9 6 (6.19%) SQL
10 5 (5.15%) Groovy
10 5 (5.15%) Korn
11 2 (2.06%) C#
11 2 (2.06%) C++
11 2 (2.06%) Kotlin
11 2 (2.06%) PHP
12 1 (1.03%) C-shell
12 1 (1.03%) Go
Qualifications
1 3 (3.09%) Security Cleared
2 2 (2.06%) SC Cleared
3 1 (1.03%) CEH
3 1 (1.03%) CISSP
3 1 (1.03%) Computer Science Degree
3 1 (1.03%) CREST Certified
3 1 (1.03%) Degree
3 1 (1.03%) GIAC
3 1 (1.03%) RHCA
3 1 (1.03%) RHCE
3 1 (1.03%) SANS
Quality Assurance & Compliance
1 2 (2.06%) QA
1 2 (2.06%) SLA
System Software
1 19 (19.59%) Docker
2 4 (4.12%) Hyper-V
2 4 (4.12%) VMware Infrastructure
3 3 (3.09%) LXC
4 1 (1.03%) Active Directory
4 1 (1.03%) GPFS
4 1 (1.03%) NFS
4 1 (1.03%) Virtual Machines
4 1 (1.03%) vSphere
4 1 (1.03%) Xen
4 1 (1.03%) XenServer
Systems Management
1 64 (65.98%) Puppet
2 56 (57.73%) Ansible
3 7 (7.22%) Kubernetes
4 5 (5.15%) Salt
5 4 (4.12%) Terraform
6 3 (3.09%) Galera Cluster
6 3 (3.09%) IBM BigFix
6 3 (3.09%) Nagios
6 3 (3.09%) SCOM
6 3 (3.09%) TADDM
6 3 (3.09%) ZABBIX
7 2 (2.06%) Mesos
7 2 (2.06%) Rundeck
8 1 (1.03%) HP SiteScope
8 1 (1.03%) NetBackup
8 1 (1.03%) Rancher
8 1 (1.03%) vCenter Server
Vendors
1 8 (8.25%) Splunk
2 7 (7.22%) VMware
3 5 (5.15%) NetApp
3 5 (5.15%) Red Hat
4 4 (4.12%) Perforce
4 4 (4.12%) ServiceNow
5 3 (3.09%) EMC
5 3 (3.09%) F5
5 3 (3.09%) IBM
5 3 (3.09%) Microsoft
6 2 (2.06%) Cisco
6 2 (2.06%) Google
6 2 (2.06%) ION Trading
6 2 (2.06%) SevOne
7 1 (1.03%) Juniper
7 1 (1.03%) New Relic
7 1 (1.03%) Oracle
7 1 (1.03%) SaltStack
7 1 (1.03%) TOWER Software
7 1 (1.03%) Twitter
City, London
Square One Resources
Rate: Unspecified rate DOE - 6 months contract
Posted: 2 hours ago
City, London
Source Technology
Rate: From £600 to £750 per day
Posted: Yesterday
City, London
PBIT Consultants
Rate: From £450 to £500 per day
Posted: 5 days ago
City, London
Digital Gurus
Rate: £450 - £500 per day
Posted: 6 days ago
City, London
EPAM Systems
Rate: From £460 to £461 per day or £90k perm
Posted: 22 days ago