Period
to 12 November 2018

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Data Quality skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Data Quality over the 6 months to 12 November 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.

Data Quality
Central London > City of London
6 months to
12 Nov 2018
Same period 2017 Same period 2016
Rank 185 176 146
Rank change year-on-year -9 -30 +27
Contract jobs citing Data Quality 72 69 103
As % of all contract IT jobs advertised in the City of London 1.03% 0.98% 1.55%
As % of the Quality Assurance & Compliance category 11.27% 7.44% 12.80%
Number of daily rates quoted 56 56 90
City of London median daily rate £475 £475 £478
Median daily rate % change year-on-year - -0.52% +6.68%
10th Percentile £225 £313 £363
90th Percentile £628 £631 £744
Central London median daily rate £475 £475 £480
% change year-on-year - -1.04% +6.67%
Number of hourly rates quoted 0 1 0
City of London median hourly rate - £65.00 -
Central London median hourly rate - £65.00 -

Data Quality is in the Quality Assurance and Compliance 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 quality assurance or compliance skills.

All Quality Assurance and Compliance Skills
City of London
Contract vacancies with a requirement for quality assurance or compliance skills 639 927 805
As % of all contract IT jobs advertised in the City of London 9.18% 13.20% 12.09%
Number of daily rates quoted 498 732 644
City of London median daily rate £475 £500 £475
Median daily rate % change year-on-year -5.00% +5.26% +5.56%
10th Percentile £274 £313 £313
90th Percentile £666 £675 £675
Central London median daily rate £475 £475 £475
Number of hourly rates quoted 12 14 5
City of London median hourly rate £19.00 £15.00 £46.50
Median hourly rate % change year-on-year +26.67% -67.74% +132.79%
10th Percentile £14.00 £15.00 £17.60
90th Percentile £27.25 £25.38 £135.55
Central London median hourly rate £19.00 £15.00 £46.50
% change year-on-year +26.67% -67.74% +118.82%

Data Quality
Job Vacancy Trend in the City of London

Job postings citing Data Quality as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for Data Quality in the City of London

Data Quality
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 Data Quality in the City of London.

Contractor daily rate trend for Data Quality in the City of London

Data Quality
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Data Quality in the City of London over the 6 months to 12 November 2018.

Contractor daily rate histogram for Data Quality in the City of London

Data Quality
Contractor Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Data Quality in the City of London.

Contractor hourly rate trend for Data Quality in the City of London

Data Quality
Contract Job Locations in the City of London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Data Quality within the City of London region over the 6 months to 12 November 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
London Bridge - 9 £550 -
Data Quality
Central London

For the 6 months to 12 November 2018, IT contractor jobs citing Data Quality 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 Data Quality.

1 40 (55.56%) SQL
2 30 (41.67%) Finance
3 28 (38.89%) Data Warehouse
4 25 (34.72%) Business Intelligence
5 23 (31.94%) Analytics
6 22 (30.56%) Data Modelling
7 19 (26.39%) SQL Server
8 17 (23.61%) Power BI
8 17 (23.61%) Data Science
9 16 (22.22%) ETL
9 16 (22.22%) Data Management
9 16 (22.22%) SQL Server Integration Services
9 16 (22.22%) Visualisation
10 15 (20.83%) Big Data
11 14 (19.44%) Relational Database
11 14 (19.44%) Hadoop
11 14 (19.44%) Data Governance
12 13 (18.06%) Kafka
12 13 (18.06%) Analytical Skills
12 13 (18.06%) Microsoft
13 12 (16.67%) SQL Server Reporting Services
13 12 (16.67%) Machine Learning
14 11 (15.28%) Apache Spark
14 11 (15.28%) Enterprise Data Warehouse
15 10 (13.89%) Agile Software Development
15 10 (13.89%) Star Schema
15 10 (13.89%) Data Structures
15 10 (13.89%) Oozie
15 10 (13.89%) Apache Hive
16 9 (12.50%) QA

Data Quality
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 11 (15.28%) Apache Spark
2 4 (5.56%) SharePoint
3 3 (4.17%) SAS
4 1 (1.39%) Jupyter
Applications
1 8 (11.11%) Microsoft Excel
2 3 (4.17%) MS Visio
3 2 (2.78%) Microsoft PowerPoint
4 1 (1.39%) Microsoft Office
4 1 (1.39%) Microsoft Project
Business Applications
1 2 (2.78%) Dynamics AX
1 2 (2.78%) Dynamics CRM
1 2 (2.78%) Oracle Retail
2 1 (1.39%) NetSuite
2 1 (1.39%) Raiser's Edge
2 1 (1.39%) Unica
Cloud Services
1 7 (9.72%) Microsoft Azure
2 4 (5.56%) Dynamics 365
3 2 (2.78%) Amazon AWS
4 1 (1.39%) Amazon Kinesis
4 1 (1.39%) Office 365
4 1 (1.39%) SaaS
4 1 (1.39%) Salesforce Service Cloud
Database & Business Intelligence
1 28 (38.89%) Data Warehouse
2 19 (26.39%) SQL Server
3 17 (23.61%) Power BI
4 16 (22.22%) SQL Server Integration Services
5 15 (20.83%) Big Data
6 14 (19.44%) Hadoop
6 14 (19.44%) Relational Database
7 12 (16.67%) SQL Server Reporting Services
8 11 (15.28%) Enterprise Data Warehouse
9 10 (13.89%) Apache Hive
9 10 (13.89%) Star Schema
10 9 (12.50%) OLAP
10 9 (12.50%) OLAP Cube
10 9 (12.50%) SQL Server Analysis Services
11 7 (9.72%) SQL Server 2016
12 6 (8.33%) NoSQL
13 4 (5.56%) HBase
13 4 (5.56%) Microsoft Analysis Services
13 4 (5.56%) RDBMS
13 4 (5.56%) Sqoop
Development Applications
1 6 (8.33%) Subversion
2 2 (2.78%) ERwin
2 2 (2.78%) Selenium
3 1 (1.39%) Bundler
3 1 (1.39%) Cucumber
3 1 (1.39%) Gerrit
3 1 (1.39%) Git (software)
3 1 (1.39%) JBehave
3 1 (1.39%) Jenkins
3 1 (1.39%) JIRA
3 1 (1.39%) RStudio
3 1 (1.39%) Team Foundation Server
3 1 (1.39%) Visual Studio
General
1 30 (41.67%) Finance
2 5 (6.94%) Marketing
2 5 (6.94%) Retail
3 3 (4.17%) Banking
3 3 (4.17%) Financial Institution
4 2 (2.78%) Legal
5 1 (1.39%) German Language
5 1 (1.39%) Law
Job Titles
1 16 (22.22%) Analyst
1 16 (22.22%) Data Engineer
2 12 (16.67%) Developer
3 11 (15.28%) Data Analyst
4 9 (12.50%) Hadoop Engineer
5 6 (8.33%) Business Intelligence Developer
5 6 (8.33%) Data Scientist
6 5 (6.94%) Big Data Engineer
6 5 (6.94%) SQL Developer
7 4 (5.56%) Consultant
8 3 (4.17%) Business Intelligence Analyst
8 3 (4.17%) Data Governance Specialist
8 3 (4.17%) SQL Server Developer
8 3 (4.17%) SSAS Developer
8 3 (4.17%) SSIS Developer
8 3 (4.17%) T-SQL Developer
9 2 (2.78%) Power BI Developer
9 2 (2.78%) Python Engineer
9 2 (2.78%) SQL BI Developer
9 2 (2.78%) SQL Server BI Developer
Libraries, Frameworks & Software Standards
1 13 (18.06%) Kafka
2 7 (9.72%) XML
3 3 (4.17%) Natural Language Processing
4 2 (2.78%) CSS
5 1 (1.39%) D3.js
5 1 (1.39%) Gherkin
5 1 (1.39%) HTML
5 1 (1.39%) MLlib
5 1 (1.39%) React
5 1 (1.39%) SailPoint
5 1 (1.39%) scikit-learn
Miscellaneous
1 13 (18.06%) Analytical Skills
2 10 (13.89%) Data Structures
3 5 (6.94%) Fixed Income
4 4 (5.56%) Algorithms
5 3 (4.17%) Equities
5 3 (4.17%) Management Information System
6 2 (2.78%) Greenfield Project
6 2 (2.78%) Replication
6 2 (2.78%) Taxonomies
7 1 (1.39%) Computer Science
7 1 (1.39%) Mobile App
7 1 (1.39%) Reference Data
7 1 (1.39%) Self-Motivation
7 1 (1.39%) Virtual Team
Operating Systems
1 2 (2.78%) Linux
1 2 (2.78%) Unix
1 2 (2.78%) Windows
Processes & Methodologies
1 25 (34.72%) Business Intelligence
2 23 (31.94%) Analytics
3 22 (30.56%) Data Modelling
4 17 (23.61%) Data Science
5 16 (22.22%) Data Management
5 16 (22.22%) ETL
5 16 (22.22%) Visualisation
6 14 (19.44%) Data Governance
7 12 (16.67%) Machine Learning
8 10 (13.89%) Agile Software Development
9 9 (12.50%) SQL Optimisation
10 8 (11.11%) Data Analysis
10 8 (11.11%) Migration
10 8 (11.11%) Problem-Solving
11 7 (9.72%) Statistics
12 6 (8.33%) Change Management
12 6 (8.33%) Data Visualisation
12 6 (8.33%) Master Data Management
12 6 (8.33%) Mentoring
12 6 (8.33%) Predictive Modelling
Programming Languages
1 40 (55.56%) SQL
2 9 (12.50%) Python
2 9 (12.50%) T-SQL
3 6 (8.33%) R
4 3 (4.17%) MATLAB
4 3 (4.17%) VBA
5 2 (2.78%) C#
5 2 (2.78%) Java
5 2 (2.78%) JavaScript
6 1 (1.39%) Bash Shell
6 1 (1.39%) ES6
6 1 (1.39%) Groovy
6 1 (1.39%) Ruby
6 1 (1.39%) Scala
Qualifications
1 6 (8.33%) Degree
2 3 (4.17%) PhD
3 2 (2.78%) MCSA
3 2 (2.78%) Microsoft Certification
4 1 (1.39%) Master's Degree
Quality Assurance & Compliance
1 9 (12.50%) QA
2 3 (4.17%) SLA
3 1 (1.39%) PMO
System Software
1 3 (4.17%) Apache Flume
2 1 (1.39%) HDFS
Systems Management
1 10 (13.89%) Oozie
2 1 (1.39%) HP Quality Center
Vendors
1 13 (18.06%) Microsoft
2 9 (12.50%) Oracle
3 6 (8.33%) Tableau
4 3 (4.17%) Alteryx
4 3 (4.17%) Hortonworks
5 2 (2.78%) Salesforce.com
5 2 (2.78%) Teradata
6 1 (1.39%) Ab Initio
6 1 (1.39%) Adobe
6 1 (1.39%) BISAM
6 1 (1.39%) FactSet
6 1 (1.39%) GoldenSource
6 1 (1.39%) IBM
6 1 (1.39%) Marketo
6 1 (1.39%) Netezza
6 1 (1.39%) Salesforce Marketing Cloud
6 1 (1.39%) SAP
6 1 (1.39%) Sybase
6 1 (1.39%) Vertica
6 1 (1.39%) Workday