Period
to 19 July 2019

The following table provides summary statistics for contract job vacancies advertised in Central 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 19 July 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
London > Central London
6 months to
19 Jul 2019
Same period 2018 Same period 2017
Rank 163 194 176
Rank change year-on-year +31 -18 0
Contract jobs citing Data Quality 121 108 85
As % of all contract IT jobs advertised in Central London 1.40% 1.16% 1.12%
As % of the Quality Assurance & Compliance category 14.90% 10.54% 7.86%
Number of daily rates quoted 88 84 65
Central London median daily rate £550 £548 £500
Median daily rate % change year-on-year +0.46% +9.50% +5.26%
10th Percentile £413 £413 £359
90th Percentile £629 £625 £675
London median daily rate £500 £513 £475
% change year-on-year -2.44% +7.89% -
Number of hourly rates quoted 2 1 0
Central London median hourly rate £12.75 £15.55 -
Median hourly rate % change year-on-year -18.01% - -
London median hourly rate £23.00 £35.00 £19.50
% change year-on-year -34.29% +79.49% -13.33%

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 Central London with a requirement for quality assurance or compliance skills.

All Quality Assurance and Compliance Skills
Central London
Contract vacancies with a requirement for quality assurance or compliance skills 812 1,025 1,081
As % of all contract IT jobs advertised in Central London 9.39% 11.05% 14.20%
Number of daily rates quoted 608 758 816
Central London median daily rate £500 £475 £500
Median daily rate % change year-on-year +5.26% -5.00% +10.13%
10th Percentile £325 £310 £315
90th Percentile £661 £675 £688
London median daily rate £500 £485 £490
% change year-on-year +3.09% -1.02% +8.89%
Number of hourly rates quoted 9 10 15
Central London median hourly rate £19.50 £20.10 £14.75
Median hourly rate % change year-on-year -2.99% +36.27% -29.76%
10th Percentile £11.50 £13.76 £12.88
90th Percentile £71.76 £67.10 £20.40
London median hourly rate £21.16 £25.00 £20.00
% change year-on-year -15.38% +25.00% -9.09%

Data Quality
Job Vacancy Trend in Central London

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

Job vacancy trend for Data Quality in Central London

Data Quality
Contractor Daily Rate Trend in Central London

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

Contractor daily rate trend for Data Quality in Central London

Data Quality
Contractor Daily Rate Histogram in Central London

The daily rate distribution of IT jobs citing Data Quality in Central London over the 6 months to 19 July 2019.

Contractor daily rate histogram for Data Quality in Central London

Data Quality
Contractor Hourly Rate Trend in Central London

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

Contractor hourly rate trend for Data Quality in Central London

Data Quality
Contract Job Locations in Central 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 Central London region over the 6 months to 19 July 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
City of London +43 106 £550 +15.79% 21
Southwark - 39 £550 -
City of Westminster -12 6 £588 +80.77%
West End of London +13 4 £575 +9.52%
Data Quality
London

For the 6 months to 19 July 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 Central London region with a requirement for Data Quality.

1 84 (69.42%) SQL
2 71 (58.68%) Data Modelling
3 68 (56.20%) Finance
4 64 (52.89%) Analytics
5 61 (50.41%) Data Warehouse
6 50 (41.32%) Big Data
7 48 (39.67%) Kafka
8 46 (38.02%) Machine Learning
8 46 (38.02%) Data Science
9 40 (33.06%) Apache Spark
9 40 (33.06%) Star Schema
10 39 (32.23%) Enterprise Data Warehouse
11 38 (31.40%) SQL Optimisation
11 38 (31.40%) OLAP
11 38 (31.40%) OLAP Cube
11 38 (31.40%) Oozie
11 38 (31.40%) Apache Hive
11 38 (31.40%) Hadoop
12 30 (24.79%) Agile Software Development
13 26 (21.49%) Python
14 22 (18.18%) Business Intelligence
15 21 (17.36%) ETL
15 21 (17.36%) Migration
16 20 (16.53%) Data Analysis
16 20 (16.53%) Analytical Skills
17 18 (14.88%) Data Governance
17 18 (14.88%) Git (software)
17 18 (14.88%) Data Migration
18 16 (13.22%) Data Transformation
18 16 (13.22%) Linux

Data Quality
Co-occurring IT Skills in Central 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 40 (33.06%) Apache Spark
2 9 (7.44%) Apache
3 4 (3.31%) SharePoint
4 2 (1.65%) ArcGIS
5 1 (0.83%) BizTalk Server
5 1 (0.83%) Confluence
5 1 (0.83%) Oracle SOA Suite
Applications
1 11 (9.09%) Microsoft Excel
2 3 (2.48%) Microsoft Office
3 2 (1.65%) MS Visio
4 1 (0.83%) Microsoft PowerPoint
4 1 (0.83%) Microsoft Project
Business Applications
1 2 (1.65%) Dynamics CRM
2 1 (0.83%) Markit EDM
2 1 (0.83%) SAP MDG
Cloud Services
1 14 (11.57%) Power Platform
2 12 (9.92%) Amazon AWS
2 12 (9.92%) Amazon S3
2 12 (9.92%) Microsoft Azure
3 7 (5.79%) Amazon CloudWatch
3 7 (5.79%) Amazon EC2
3 7 (5.79%) Amazon Glacier
3 7 (5.79%) Amazon SQS
3 7 (5.79%) AWS CloudFormation
3 7 (5.79%) AWS CloudTrail
3 7 (5.79%) Virtual Private Cloud
4 3 (2.48%) Amazon EMR
4 3 (2.48%) AWS Lambda
4 3 (2.48%) Dynamics 365
4 3 (2.48%) Force.com
4 3 (2.48%) Serverless
5 1 (0.83%) Google Analytics
5 1 (0.83%) Google Cloud Platform
Communications & Networking
1 1 (0.83%) HTTP
Database & Business Intelligence
1 61 (50.41%) Data Warehouse
2 50 (41.32%) Big Data
3 40 (33.06%) Star Schema
4 39 (32.23%) Enterprise Data Warehouse
5 38 (31.40%) Apache Hive
5 38 (31.40%) Hadoop
5 38 (31.40%) OLAP
5 38 (31.40%) OLAP Cube
6 14 (11.57%) Power BI
7 12 (9.92%) SQL Server
8 10 (8.26%) SQL Server Integration Services
9 8 (6.61%) NoSQL
9 8 (6.61%) Relational Database
10 7 (5.79%) Amazon RDS
10 7 (5.79%) SQL Server Reporting Services
11 6 (4.96%) SQL Server Analysis Services
12 4 (3.31%) Azure SQL Data Warehouse
12 4 (3.31%) Azure SQL Database
12 4 (3.31%) Data Lake
13 3 (2.48%) Microsoft Analysis Services
Development Applications
1 18 (14.88%) Git (software)
2 7 (5.79%) Jenkins
3 3 (2.48%) JIRA
3 3 (2.48%) Selenium
4 2 (1.65%) ERwin
4 2 (1.65%) Team Foundation Server
4 2 (1.65%) Visual Studio
5 1 (0.83%) Bitbucket Server
5 1 (0.83%) Eclipse
5 1 (0.83%) Protractor
5 1 (0.83%) SQL Server Management Studio (SSMS)
5 1 (0.83%) Subversion
General
1 68 (56.20%) Finance
2 6 (4.96%) Advertising
3 5 (4.13%) Banking
4 3 (2.48%) Legal
4 3 (2.48%) Marketing
5 2 (1.65%) Back Office
6 1 (0.83%) Electronics
6 1 (0.83%) Front Office
6 1 (0.83%) Investment Banking
6 1 (0.83%) Manufacturing
6 1 (0.83%) Retail
6 1 (0.83%) Telecoms
Job Titles
1 46 (38.02%) Data Engineer
2 38 (31.40%) Hadoop Engineer
3 26 (21.49%) Analyst
4 24 (19.83%) Developer
5 16 (13.22%) Data Analyst
6 8 (6.61%) Architect
6 8 (6.61%) Business Analyst
6 8 (6.61%) Data Architect
7 7 (5.79%) Java Developer
7 7 (5.79%) SQL Analyst
8 6 (4.96%) Python Developer
8 6 (4.96%) SQL Developer
9 4 (3.31%) Analyst Developer
9 4 (3.31%) Business Intelligence Analyst
9 4 (3.31%) Business Intelligence Developer
9 4 (3.31%) Data Business Analyst
9 4 (3.31%) Data Modeller
9 4 (3.31%) Power BI Analyst
9 4 (3.31%) Report Developer
10 3 (2.48%) Senior Developer
Libraries, Frameworks & Software Standards
1 48 (39.67%) Kafka
2 8 (6.61%) JSON
2 8 (6.61%) XML
3 7 (5.79%) Apache NiFi
3 7 (5.79%) HTML
3 7 (5.79%) JMS
3 7 (5.79%) REST
3 7 (5.79%) SOAP
4 4 (3.31%) Web Services
5 2 (1.65%) .NET
5 2 (1.65%) MDX
5 2 (1.65%) Spring
6 1 (0.83%) NumPy
6 1 (0.83%) Pandas
6 1 (0.83%) Pyramid
6 1 (0.83%) RESTful
6 1 (0.83%) SciPy
Miscellaneous
1 20 (16.53%) Analytical Skills
2 15 (12.40%) Data Structures
3 6 (4.96%) Reference Data
4 4 (3.31%) Algorithms
4 4 (3.31%) NHS
5 3 (2.48%) Data Protection Act
6 2 (1.65%) Data Centre
6 2 (1.65%) Linked Data
6 2 (1.65%) Management Information System
6 2 (1.65%) Reinsurance
6 2 (1.65%) Virtual Team
7 1 (0.83%) Derivative
7 1 (0.83%) Equities
7 1 (0.83%) Fixed Income
7 1 (0.83%) Foreign Exchange (FX)
7 1 (0.83%) Freedom of Information
7 1 (0.83%) Freedom of Information Act
7 1 (0.83%) Hedge funds
7 1 (0.83%) Self-Motivation
7 1 (0.83%) Tandem
Operating Systems
1 16 (13.22%) Linux
2 4 (3.31%) Unix
3 1 (0.83%) Windows
Processes & Methodologies
1 71 (58.68%) Data Modelling
2 64 (52.89%) Analytics
3 46 (38.02%) Data Science
3 46 (38.02%) Machine Learning
4 38 (31.40%) SQL Optimisation
5 30 (24.79%) Agile Software Development
6 22 (18.18%) Business Intelligence
7 21 (17.36%) ETL
7 21 (17.36%) Migration
8 20 (16.53%) Data Analysis
9 18 (14.88%) Data Governance
9 18 (14.88%) Data Migration
10 16 (13.22%) Data Transformation
10 16 (13.22%) Problem-Solving
11 15 (12.40%) Continuous Integration
12 13 (10.74%) Data Management
13 12 (9.92%) Asset Management
13 12 (9.92%) Stakeholder Management
14 11 (9.09%) Data Architecture
15 10 (8.26%) Decision-Making
Programming Languages
1 84 (69.42%) SQL
2 26 (21.49%) Python
3 13 (10.74%) Bash Shell
4 12 (9.92%) Java
5 7 (5.79%) Java 8
6 6 (4.96%) JavaScript
7 3 (2.48%) C#
7 3 (2.48%) PL/SQL
7 3 (2.48%) Shell Script
7 3 (2.48%) T-SQL
8 2 (1.65%) Data Analysis Expressions (DAX)
8 2 (1.65%) VBA
9 1 (0.83%) C++
9 1 (0.83%) PHP
9 1 (0.83%) R
9 1 (0.83%) VB.NET
Qualifications
1 9 (7.44%) Security Cleared
2 8 (6.61%) Degree
2 8 (6.61%) SC Cleared
3 6 (4.96%) Computer Science Degree
4 3 (2.48%) CTC Cleared
5 1 (0.83%) BPSS Clearance
5 1 (0.83%) ISEB
Quality Assurance & Compliance
1 3 (2.48%) QA
2 2 (1.65%) Solvency II
3 1 (0.83%) GDPR
3 1 (0.83%) ISO/IEC 27001
System Software
1 6 (4.96%) Docker
Systems Management
1 38 (31.40%) Oozie
2 7 (5.79%) Ansible
2 7 (5.79%) Kubernetes
Vendors
1 15 (12.40%) Oracle
2 14 (11.57%) Microsoft
3 10 (8.26%) Tableau
4 5 (4.13%) Salesforce.com
4 5 (4.13%) SAP
5 3 (2.48%) Ariba
5 3 (2.48%) Dell
5 3 (2.48%) MuleSoft
6 2 (1.65%) ServiceNow
6 2 (1.65%) Siebel
7 1 (0.83%) Bloomberg
7 1 (0.83%) Databricks
7 1 (0.83%) Google
7 1 (0.83%) IBM
7 1 (0.83%) Informatica
7 1 (0.83%) Sybase
7 1 (0.83%) Zoho