Data Analyst

Position: Data Analyst - Performance (Permanent)
Company Description

⚡️💡 About Assystem

At Assystem, our mission is to accelerate the energy transition worldwide. Our 8,000 Switchers blend historical engineering expertise with cutting-edge digital technologies to drive this change. Join us in revolutionizing the energy sector and making a significant global impact.

🤝 Why Join the Community of Switchers?

Be part of one of the top three largest nuclear engineering companies globally. At Assystem, you'll contribute to groundbreaking projects that push the boundaries of innovation and engineering excellence. Join a community committed to driving forward the future of energy.

Job Description

🚀 Job Purpose / Overview

The Performance Analyst plays a critical role in analysing business performance, identifying data and capability gaps, and enabling data-driven decision making across the organisation. Acting as the conduit between business stakeholders, data architects, and technical delivery teams, the role ensures that business requirements are translated into high-quality data products that deliver strategic value.

The Performance Analyst supports the end-to-end lifecycle of data and analytics solutions, from problem definition and requirements capture through to delivery, insight generation, and communication.

🔍 Key Responsibilities

Analyse and understand business data, identifying gaps across people, processes, systems, and information to guide decision-making and data product development

Analyse business problems and opportunities, capturing clear and structured requirements within the requirements database

Identify data gaps and define data requirements required for ingestion into the analytics platform

Communicate insights, findings, and conclusions using appropriate formats, including data visualisations and reports

Support architecture and technical delivery teams to ensure data products meet business requirements

Use agile delivery methodologies, leveraging Azure Dev Ops to manage user stories, tasks, dependencies, risks, and issues

Perform end-to-end analytical activities including data discovery, profiling, validation, transformation, analysis, and interpretation

Raise open issues relating to operating models or data products to the Information Design Authority (IDA) open issues register for review and resolution

🧭 Contextual Information

The Performance Analyst is one of four roles within an Information Management Pod and acts as the primary interface between business stakeholders and the technical delivery teams. The role supports communication at both strategic and technical levels, ensuring alignment between business objectives, architecture, and data delivery.

All activities are governed by the Information Design Authority (IDA) process, which ensures consistency between requirements, architecture, and technical outputs. Any deviations identified during delivery are formally captured and managed through the IDA governance framework.

This role is suited to an analytical thinker who can translate technical complexity into clear business insight, ensuring the Information Management team delivers robust, compliant, and value-driven data solutions.

Qualifications

🎓 Qualifications, Knowledge & Skills

Essential

Degree-level qualification or equivalent experience in a relevant discipline (e.g. Business, Data & Analytics, Engineering, Computer Science, Economics, or similar analytical field)

Demonstrable experience leading requirements definition, process mapping, and problem-framing within data-centric programmes or transformations

Experience working within multidisciplinary teams

Proven ability to analyse complex business processes and identify data gaps using structured techniques (e.g. As-Is / To-Be, swimlanes, use cases, decision modelling)

Strong experience performing end-to-end analytical work, including data discovery, validation, analysis, and communication

Working knowledge of SQL, sufficient to write queries, explore datasets, validate transformations, and troubleshoot basic issues

Ability to read and interpret Python code used for data processing or analytics, with the capability to modify simple scripts if required

Experience working on projects or…