Period
to 15 February 2019

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 15 February 2019 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
15 Feb 2019
Same period 2018 Same period 2017
Rank 159 198 146
Rank change year-on-year +39 -52 +5
Contract jobs citing Data Quality 97 61 89
As % of all contract IT jobs advertised in the City of London 1.42% 0.85% 1.44%
As % of the Quality Assurance & Compliance category 15.98% 7.13% 11.68%
Number of daily rates quoted 78 48 69
City of London median daily rate £550 £473 £500
Median daily rate % change year-on-year +16.40% -5.50% +12.36%
10th Percentile £319 £300 £356
90th Percentile £589 £648 £739
Central London median daily rate £550 £475 £500
% change year-on-year +15.79% -5.00% +13.64%
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 607 856 762
As % of all contract IT jobs advertised in the City of London 8.90% 11.99% 12.35%
Number of daily rates quoted 448 657 587
City of London median daily rate £500 £500 £500
10th Percentile £280 £325 £320
90th Percentile £638 £675 £688
Central London median daily rate £493 £484 £491
% change year-on-year +1.81% -1.53% +9.17%
Number of hourly rates quoted 11 14 5
City of London median hourly rate £22.00 £15.00 £19.00
Median hourly rate % change year-on-year +46.67% -21.05% -21.58%
10th Percentile £14.00 £15.00 £14.90
90th Percentile £27.25 £54.23 £120.15
Central London median hourly rate £22.00 £15.00 £18.00
% change year-on-year +46.67% -16.67% -26.87%

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 15 February 2019.

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 15 February 2019. 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 - 35 £550 -
Data Quality
Central London

For the 6 months to 15 February 2019, 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 69 (71.13%) SQL
2 57 (58.76%) Finance
3 56 (57.73%) Analytics
4 51 (52.58%) Data Warehouse
5 49 (50.52%) Data Modelling
6 39 (40.21%) Big Data
6 39 (40.21%) Machine Learning
7 38 (39.18%) Data Science
8 37 (38.14%) Apache Spark
9 36 (37.11%) Oozie
9 36 (37.11%) Kafka
9 36 (37.11%) Hadoop
9 36 (37.11%) Apache Hive
9 36 (37.11%) Star Schema
10 35 (36.08%) OLAP
10 35 (36.08%) Enterprise Data Warehouse
10 35 (36.08%) OLAP Cube
10 35 (36.08%) SQL Optimisation
11 22 (22.68%) Business Intelligence
12 16 (16.49%) Microsoft
12 16 (16.49%) Agile Software Development
13 14 (14.43%) Data Analysis
13 14 (14.43%) ETL
13 14 (14.43%) Analytical Skills
14 13 (13.40%) SQL Server
14 13 (13.40%) Data Management
15 12 (12.37%) SQL Server Integration Services
15 12 (12.37%) Data Structures
15 12 (12.37%) Data Governance
15 12 (12.37%) Power BI

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 37 (38.14%) Apache Spark
2 4 (4.12%) SharePoint
3 2 (2.06%) SAS
4 1 (1.03%) Jupyter
Applications
1 4 (4.12%) Microsoft Excel
2 3 (3.09%) MS Visio
3 1 (1.03%) Microsoft PowerPoint
3 1 (1.03%) Microsoft Project
Business Applications
1 4 (4.12%) Dynamics CRM
2 3 (3.09%) Oracle Retail
3 2 (2.06%) Dynamics AX
4 1 (1.03%) 3000 Xtra
4 1 (1.03%) Markit EDM
4 1 (1.03%) Raiser's Edge
4 1 (1.03%) RMDS
4 1 (1.03%) Unica
Cloud Services
1 8 (8.25%) Microsoft Azure
2 7 (7.22%) Dynamics 365
3 4 (4.12%) Amazon AWS
4 2 (2.06%) SaaS
5 1 (1.03%) Amazon Kinesis
5 1 (1.03%) Google Analytics
5 1 (1.03%) Google Cloud Platform
5 1 (1.03%) Salesforce Service Cloud
Database & Business Intelligence
1 51 (52.58%) Data Warehouse
2 39 (40.21%) Big Data
3 36 (37.11%) Apache Hive
3 36 (37.11%) Hadoop
3 36 (37.11%) Star Schema
4 35 (36.08%) Enterprise Data Warehouse
4 35 (36.08%) OLAP
4 35 (36.08%) OLAP Cube
5 13 (13.40%) SQL Server
6 12 (12.37%) Power BI
6 12 (12.37%) SQL Server Integration Services
7 11 (11.34%) SQL Server Reporting Services
8 10 (10.31%) Relational Database
9 6 (6.19%) NoSQL
10 5 (5.15%) SQL Server Analysis Services
11 3 (3.09%) Oracle Reports
11 3 (3.09%) PostgreSQL
11 3 (3.09%) RDBMS
12 2 (2.06%) Biml
12 2 (2.06%) SQL Server 2016
Development Applications
1 7 (7.22%) Git (software)
2 3 (3.09%) Subversion
3 2 (2.06%) ERwin
3 2 (2.06%) JIRA
3 2 (2.06%) Selenium
3 2 (2.06%) Team Foundation Server
4 1 (1.03%) Cucumber
4 1 (1.03%) Gerrit
4 1 (1.03%) Hudson
4 1 (1.03%) JBehave
4 1 (1.03%) Jenkins
4 1 (1.03%) SQL Server Management Studio (SSMS)
4 1 (1.03%) Visual Studio
General
1 57 (58.76%) Finance
2 6 (6.19%) Marketing
3 3 (3.09%) Banking
3 3 (3.09%) Retail
4 2 (2.06%) Legal
4 2 (2.06%) Telecoms
5 1 (1.03%) Back Office
5 1 (1.03%) Billing
5 1 (1.03%) German Language
5 1 (1.03%) Investment Banking
5 1 (1.03%) Law
5 1 (1.03%) Pharmaceutical
Job Titles
1 41 (42.27%) Data Engineer
2 35 (36.08%) Hadoop Engineer
3 18 (18.56%) Analyst
4 14 (14.43%) Developer
5 11 (11.34%) Data Analyst
6 5 (5.15%) Big Data Engineer
6 5 (5.15%) Business Analyst
6 5 (5.15%) Python Developer
7 4 (4.12%) Business Intelligence Developer
7 4 (4.12%) Data Business Analyst
8 3 (3.09%) Business Intelligence Analyst
8 3 (3.09%) Consultant
8 3 (3.09%) Data Modeller
8 3 (3.09%) DBA
8 3 (3.09%) Tester
9 2 (2.06%) Data Warehouse Analyst
9 2 (2.06%) Performance Tester
9 2 (2.06%) Senior Developer
9 2 (2.06%) SQL DBA
9 2 (2.06%) Transition Manager
Libraries, Frameworks & Software Standards
1 36 (37.11%) Kafka
2 7 (7.22%) HTML
3 4 (4.12%) XML
4 2 (2.06%) CSS
5 1 (1.03%) Ajax
5 1 (1.03%) Gherkin
5 1 (1.03%) MDX
5 1 (1.03%) MLlib
5 1 (1.03%) SailPoint
5 1 (1.03%) scikit-learn
5 1 (1.03%) XHTML
Miscellaneous
1 14 (14.43%) Analytical Skills
2 12 (12.37%) Data Structures
3 4 (4.12%) Management Information System
4 2 (2.06%) NHS
4 2 (2.06%) Replication
4 2 (2.06%) Taxonomies
5 1 (1.03%) Algorithms
5 1 (1.03%) CMDB
5 1 (1.03%) Fixed Income
5 1 (1.03%) Virtual Team
Operating Systems
1 8 (8.25%) Linux
2 3 (3.09%) Unix
2 3 (3.09%) Windows
Processes & Methodologies
1 56 (57.73%) Analytics
2 49 (50.52%) Data Modelling
3 39 (40.21%) Machine Learning
4 38 (39.18%) Data Science
5 35 (36.08%) SQL Optimisation
6 22 (22.68%) Business Intelligence
7 16 (16.49%) Agile Software Development
8 14 (14.43%) Data Analysis
8 14 (14.43%) ETL
9 13 (13.40%) Data Management
10 12 (12.37%) Data Governance
11 10 (10.31%) Master Data Management
11 10 (10.31%) Migration
11 10 (10.31%) Problem-Solving
12 9 (9.28%) Asset Management
12 9 (9.28%) Stakeholder Management
13 8 (8.25%) Data Analytics
13 8 (8.25%) Data Transformation
14 7 (7.22%) Performance Attribution
15 6 (6.19%) Decision-Making
Programming Languages
1 69 (71.13%) SQL
2 8 (8.25%) JavaScript
2 8 (8.25%) Python
3 5 (5.15%) Bash Shell
4 4 (4.12%) T-SQL
5 3 (3.09%) VBA
6 1 (1.03%) C#
6 1 (1.03%) C++
6 1 (1.03%) Data Analysis Expressions (DAX)
6 1 (1.03%) Groovy
6 1 (1.03%) Java
6 1 (1.03%) PL/SQL
6 1 (1.03%) R
6 1 (1.03%) Ruby
Qualifications
1 4 (4.12%) Degree
2 3 (3.09%) Computer Science Degree
3 2 (2.06%) MCSA
3 2 (2.06%) Microsoft Certification
4 1 (1.03%) ISEB
4 1 (1.03%) ITIL Certification
4 1 (1.03%) Master's Degree
Quality Assurance & Compliance
1 8 (8.25%) QA
2 1 (1.03%) PMO
2 1 (1.03%) Solvency II
System Software
1 5 (5.15%) Docker
2 1 (1.03%) HDFS
Systems Management
1 36 (37.11%) Oozie
2 1 (1.03%) HP Quality Center
Vendors
1 16 (16.49%) Microsoft
2 7 (7.22%) Oracle
3 6 (6.19%) Tableau
4 2 (2.06%) BISAM
4 2 (2.06%) Bloomberg
4 2 (2.06%) FactSet
4 2 (2.06%) SAP
5 1 (1.03%) Adobe
5 1 (1.03%) Ariba
5 1 (1.03%) Google
5 1 (1.03%) IBM
5 1 (1.03%) Reuters
5 1 (1.03%) Salesforce Marketing Cloud
5 1 (1.03%) Salesforce.com
5 1 (1.03%) ServiceNow
5 1 (1.03%) Siebel
5 1 (1.03%) Vertica