Chroma Recruitment
Business Analyst - Data
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Data Business Analyst (Contract)
Contract details
- Duration: 5-6 Months
- Day rate: Up to £450 per day
- IR35: Outside IR35
- Location: Central London, three days a week on site
The role
This is a contract role for a senior Data Business Analyst on the global data transformation programme of a well-known international food retailer. The programme is building a single cloud data platform in Snowflake and rebuilding the business's core reporting in Power BI, across multiple markets and functions.
You will report to the Senior Business Analyst and work closely with the Programme Manager and the Engineering Delivery Lead. Your job is to turn what the business needs from its data into precise, signed-off definitions that engineers can build and test against: metrics, calculations, business rules, data lineage and acceptance criteria.
You will work directly with senior stakeholders across Finance, Operations and other functions in several markets, and you'll be expected to lead those conversations through to sign-off yourself. The role suits someone who is as comfortable challenging a metric definition with a director as they are querying Snowflake to check a number.
Responsibilities
- Lead discovery with business stakeholders to understand their reporting and data needs, the decisions those needs support, and where current reporting falls short
- Define metrics precisely, including calculations, business rules, dimensions, granularity and edge cases, documented so the business can sign them off and engineers can build from them
- Trace each metric back to its source systems, documenting data lineage and source-to-target mappings, and identifying gaps where data isn't yet available
- Harmonise definitions across markets and functions so that the same metric means the same thing everywhere, resolving local variations with the right owners
- Write user stories and testable acceptance criteria for data products and reports, and manage them through Jira
- Get formal sign-off from senior stakeholders on definitions, requirements and acceptance criteria, managing disagreement and keeping decisions moving
- Work day to day with data engineers, QA and reporting analysts through the delivery lifecycle, clarifying requirements and reviewing outputs against what was agreed
- Use SQL to profile, query and validate data in Snowflake, so that requirements and test outcomes are grounded in the data itself
- Support testing and user acceptance, preparing test scenarios, reviewing results with QA and taking validated outputs to the business for sign-off
- Keep clear, well-organised documentation in Confluence, contributing to a shared metric dictionary that outlasts any single piece of work
- Work within a two-week sprint cadence, contributing to planning, reviews and retrospectives
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Skills and experience
Business analysis
- At least five years as a Business Analyst, with substantial recent experience on data, reporting or analytics delivery
- Strong requirements skills: eliciting, structuring and documenting requirements that are complete, unambiguous and testable
- Proven experience defining metrics and KPIs, including calculations, business rules and data lineage, and taking them through to sign-off
- Experience writing user stories and acceptance criteria, and supporting testing and user acceptance
- Experience delivering in Agile teams using Jira and Confluence
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Technical essentials
- Working SQL, with the ability to query, profile and validate data independently
- Hands-on experience of Snowflake
- Experience specifying and validating reporting in Power BI
- Experience working alongside data engineers on a cloud data platform, with a sound understanding of data modelling and layered data architectures (for example Bronze, Silver and Gold)
- Understanding of financial and operational metrics in a multi-site business, such as P&L, gross profit, cost of goods, labour and waste
Desirable
- Experience with dbt
- Retail, food or hospitality experience, ideally across more than one country
- Migrating reporting from legacy tools to a modern data platform
- Experience with semantic layers, metric dictionaries or business glossaries
How you work
- Confident with senior stakeholders: able to challenge, negotiate and drive decisions to sign-off with directors and heads of function
- A clear communicator in writing and in person, able to explain data concepts to business audiences and business needs to engineers
- Structured and precise: you notice when a definition is ambiguous and don't let it through
- Self-directed, comfortable owning a workstream end to end with limited supervision
- A pragmatic problem solver who keeps delivery moving when requirements are incomplete or contested
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