Data Engineer IT · London ·

Jellycat; Greater London; On-site; GBP 65,000 - 90,000; Full time

Job summary

Jellycat in London is seeking a hands-on Data Engineer to own defined areas of our data platform, from ingestion through to trusted, modelled data, with guidance as the business grows.

You will design and maintain scalable data pipelines in Microsoft Fabric, develop data models with Delta tables, and collaborate with analytics engineers, data analysts and data scientists to deliver reusable datasets and robust data quality.

Qualifications

• 2+ years’ proven experience as a Data Engineer or in a similar role.
• Proficiency in PySpark, Python and SQL for data pipelines.
• Experience with cloud data platforms (Microsoft Fabric, Azure Synapse or Databricks).
• Strong data warehousing and Lakehouse knowledge.
• Experience with Git and code reviews.

Responsibilities

• Design, build and maintain scalable data pipelines in Microsoft Fabric.
• Develop and maintain data models in OneLake using Delta tables, PySpark and SQL.
• Collaborate with analytics engineers, data analysts and data scientists to deliver datasets and ensure data quality.
• Implement data quality checks, monitoring and issue resolution.
• Follow data governance standards with documentation and access controls.
• Use Git and CI/CD for version control and deployment.
• Monitor pipeline performance and Fabric capacity usage.
• Contribute to team standards and knowledge sharing.

Skills

PySpark

Python

SQL

Git & CI/CD

Microsoft Fabric

Azure Synapse

Databricks

Tools

Microsoft Fabric

Azure Synapse

Azure Data Factory

Databricks

Job description

For a quarter of a century, the Jellycat family have brought joy, wonder and playful fun to people of all ages, in every part of the world. Utterly original and in a class of their own, they are currently among the most loved and collected toys of their kind. How has this gentle tribe endeared themselves to so many? Perhaps it is their whimsical expressions. Or the deliciously soft fabrics. Or the beautiful way in which they sit in your hand. Whatever it is, there is something magical and unmistakeable about each one of them.

Data sits at the heart of how we understand our customers, plan our stock and run our operations. The Data Engineer builds the foundation that makes this possible: a reliable, well governed data platform on Microsoft Fabric that brings together our eCommerce and wholesale data and makes it ready for analytics, reporting and machine learning.

This is a hands on role with real ownership. You will take responsibility for defined areas of the platform, from ingestion through to modelled, trusted data, with guidance and support, widening your scope as the business and the platform grow.

You'll be;

• Designing, building and maintaining scalable, reliable data pipelines in Microsoft Fabric that ingest data from D365 F&O, our eCommerce platform and other source systems.

• Developing and maintaining well-structured data models in OneLake using Delta tables, PySpark and SQL, following a medallion approach and dimensional modelling principles.

• Working closely with analytics engineers, data analysts, data scientists and business stakeholders to understand data requirements and turn them into reusable, well-documented datasets.

• Building data quality checks, testing and monitoring into pipelines so issues are caught early, as well as investigating and resolving data and pipeline issues promptly and addressing root causes.

• Following data governance standards, including clear data definitions, lineage, documentation and access controls.

• Using Git and CI/CD practices, such as Azure DevOps or GitHub, for version control, code review and the deployment of pipelines and notebooks.

• Monitoring and optimising pipeline performance and Fabric capacity usage, balancing speed, reliability and cost.

• Contributing to team standards, documentation and knowledge sharing.

You'll have;

Essential

• 2+ years’ proven experience as a Data Engineer or in a similar role, working across areas such as data ingestion, transformation, modelling, data quality and performance optimisation.

• Strong hands-on proficiency across the core data engineering languages:

  • PySpark: experience building and optimising Spark transformations at scale, ideally in notebook-based environments such as Fabric or Databricks.

  • Python: experience with scripting and automation around data workflows, including API ingestion, testing and orchestration.

  • SQL: experience writing queries and transformations, and modelling data in relational and warehouse environments.

• Hands on experience with a modern cloud data platform, such as Microsoft Fabric, Azure Synapse, Azure Data Factory or Databricks, with a willingness to deepen your Fabric skills.

• A good understanding of data warehousing and Lakehouse concepts, including ELT patterns, dimensional modelling and medallion architecture.

• Experience using Git, including working through pull requests and code reviews.

• Strong problem-solving skills and attention to detail, with a methodical approach to debugging data issues.

• Clear communication skills, with the ability to work effectively with both technical and non-technical colleagues, independently and as part of a team.

Desirable

You’ll ideally also have:

• Experience with Microsoft Fabric components, such as:

  • Data Factory, including pipelines and orchestration.

  • Data Engineering, including Lakehouse, notebooks and Apache Spark.

  • Data Warehouse, including SQL endpoints and schemas.

  • Real-Time Intelligence, including KQL databases and event ingestion.

  • OneLake and Delta tables, including security and governance within Fabric.

• An understanding of D365 F&O data structures, for example through Fabric Link or Synapse Link.

• Power BI knowledge, including semantic models and basic DAX, allowing you to collaborate effectively with analysts.

• Experience working with eCommerce, retail or wholesale data.

• Familiarity with data governance and cataloguing tools, such as Microsoft Purview.

• Exposure to streaming or real-time data technologies, such as Event Hubs or Kafka.

• Exposure to data science or machine learning workflows.