Senior Data Analyst

Description

:We are seeking a Senior Data / Systems Analyst to support global operational and finance reporting across multiple business systems. This role will own reporting requirements, data definitions, integrations, and data models that underpin a large and growing portfolio of management and operational reports.
The successful candidate will act as the bridge between business stakeholders, source systems, and the Power BI reporting team, ensuring a single source of truth, consistent KPIs, and high quality, reliable data across regions and countries.
This is a hands on analytical role, focused on requirements definition, data modelling, integration design, and governance, rather than report development.

Own end‑to‑end integration specifications for all global reports

Define how data flows between systems and into the reporting layer

Validate and reconcile data across source systems and reporting outputs

Act as the central point of ownership for reporting logic and assumptions

Own assumptions, calculations, and logic behind all reported financial metrics

Ensure reports support finance use cases such as:

Management reporting

Actuals vs budget vs forecast

Project and margin reporting

Revenue, cost, and profitability analysis

Requirements & Stakeholder Management

Elicit, document, and manage clear reporting requirements from global and local stakeholders

Translate business questions into structured data requirements for the Power BI reporting team

Support requirements definition for individual reports and dashboards

Challenge local requirements to ensure consistency, scalability, and alignment with global standards

Partner with Finance leadership, regional finance teams, FP&A, and Controlling to define clear reporting requirements

Translate finance questions into structured data requirements for the Power BI team

Data Definitions & Governance

Own data definitions, KPI definitions, field mappings, and calculation logic

Establish and enforce reporting standards (naming conventions, metrics, dimensions, hierarchies)

Ensure consistent KPI definitions across countries, regions, and business units

Prevent conflicting numbers and “multiple versions of the truth”

Data Modelling & Architecture

Design and maintain reporting data models (e.g. star schemas, relationships, measures)

Define grain, dimensions, facts, and aggregation logic

Partner with Power BI specialists to ensure models support performant and scalable reporting

Data Integration & Quality

Connect and reconcile data from multiple systems (e.g. ERP, HR, project management tools, finance systems)

Work with messy, incomplete, and non‑aligned data sources, identifying gaps and inconsistencies

Validate data quality, completeness, and accuracy before and after go‑live

Define rules for data transformations and harmonisation

Issue Resolution & Continuous Improvement

Support investigation and resolution of data and reporting issues post go‑live

Perform root‑cause analysis of discrepancies and work with system owners to resolve issues

Identify opportunities to simplify, standardise, and automate reporting data flows

Documentation

Maintain comprehensive documentation including:

Data definitions and KPI dictionaries

Field mappings and transformations

Report logic and assumptions

Data lineage and source‑to‑report traceability

Required Experience & Skills

Significant experience in a Senior Systems Analyst, Integration Analyst, or Reporting Analyst role

Strong background in enterprise reporting and analytics in a global environment

Proven experience working with multiple source systems (ERP, HR, project systems, financial systems)

Strong understanding of data modelling concepts (star schemas, dimensions, facts, measures)

Hands‑on experience defining data requirements for BI tools (e.g. Power BI, Tableau, similar)

Excellent ability to work with complex, messy, and inconsistent data

Strong documentation and stakeholder communication skills

Desirable

Experience in finance or operational reporting in a multi‑country organisation

Knowledge of data governance and KPI standardisation frameworks

Familiarity with Power BI data modelling and DAX concepts (requirements‑level, not development)

Experience working with global reporting programmes or transformations

Key Competencies

Highly structured and detail‑oriented

Strong analytical and problem‑solving skills

Able to challenge assumptions and drive data clarity

Comfortable operating as the single point of ownership for definitions and logic

Able to balance global standards with local reporting needs

Contract Type :

Permanent

Here at Havas across the group we pride ourselves on being committed to offering equal opportunities to all potential employees and have zero tolerance for discrimination. We are an equal opportunity employer and welcome applicants irrespective of age, sex, race, ethnicity, disability and other factors that have no bearing on an individual’s ability to perform their job.