Data Analyst SQL Python Tableau

Thames Water is leading the water sectors journey to become a fully data-enabled and digitally connected. Driving innovation, integration, and process optimisation across the sector, ensuring that people, data, and technology work together to deliver measurable outcomes.
As an effective Senior Data Analyst you will manage data and information within the Thames Water Framework and relevant projects. It will involve compiling, cleaning and transforming data from multiple raw sources into clearly presented and efficient visualisations, ensuring stakeholder engagement. support structured analysis and input into effective decision making. You will develop Power BI reports and dashboards and help create, engage and support a data-driven culture across the project by building trust in quality project data. A part of this role it to provide constructive improvements whilst meeting the reporting needs of the project.
This will be a 12 months contract.
To enforce the project progress reporting cycle in respect of Data Collection, Validation, Reporting and Analysis.
Build and continuously improve information visualisation on Power BI dashboards and tabular reports to ensure different audiences are presented with intelligence.
To support the Senior Leadership Team and Management Teams with ad-hoc reports and analysis as required.
To work with the senior leadership in developing the performance maturity framework mapping all the discipline performance indicators to objectives and ensuring performance measurement is reliable and compliant to specification.
To help develop and document a project data-model (data dictionary, taxonomy and ontology) to support the project team with self-service.
Contribute pro-actively as a member of key working groups within Costain to represent the project, share best practice and drive continuous improvement.
Minimum 5 years experience as a data analyst
Proven experience in leading data analysis within transformation, change, or operational improvement programmes.
Strategic thinker with the ability to align insights with transformation goals
Strong proficiency in BI tools (e.g. Power BI, Tableau), SQL, Excel, and Python or R
Ability to coach others to translate complex data into actionable insights for diverse audiences
Experience in defining and tracking KPIs and performance metrics
Experience of taking key roles in data governance, privacy, and compliance principles
Analytical and detail-oriented, with a strong commitment to data integrity and accuracy
Proactive in promoting data literacy and enabling self-service analytics
Exposure to tools such as JIRA, Confluence, or MS Project
Familiarity with programme and project management environments
Experience with metadata management, data cataloging, and lineage tracking
Professional certifications in BI, data analysis, or data governance
Costain helps to improve people’s lives with integrated, leading edge, smart infrastructure solutions across the UK’s energy, water, transportation and defence markets. We help our clients improve their business performance by increasing capacity, improving customer service, safeguarding security, enhancing resilience, decarbonising and delivering increased efficiency. We will achieve this by focusing on blue chip clients whose major spending plans are underpinned by strategic national needs, regulatory commitments, legislation or essential performance requirements. We offer our clients leading edge solutions that are digitally optimised through the following five services which cover the whole lifecycle of their assets: future-shaping strategic consultancy; digital technology solutions; asset optimisation and complex programme delivery. A Disability Confident employer will generally offer an interview to any applicant that disclose they have a disability and meets the minimum criteria for the job as defined by the employer.
It is important to note that in certain recruitment situations such as high-volume, seasonal and high-peak times, the employer may wish to limit the overall numbers of interviews offered to both disabled people and non-disabled people.
For more details please go to the Disability Confident website:
Costain are working with Thames Water on a variety of water and wastewater projects and have fantastic opportunities for individuals to join our growing AMP7 delivery team, working predominantly across the Thames Valley and Thames South regions. There is a mix of projects ranging from smaller capital maintenance to large civil new build schemes.