Freelance BI Developer

RemoteContract London, England, United Kingdom OVERVIEW Description Role: BI Developer Reports into: Data & Insights Manager Freelance Contract: Working 7.5 hours per day, 5 days per week About Us Nothing is clearer to us than the belief that every woman should include strength training in her life to enhance both physical and mental well-being. It's about building strong bodies and even stronger minds, asserting their right to take up space in the gym, and allowing the spotlight to shine bright on their progress. To us, strength training represents a determined, goal-oriented mindset and an unwavering work ethic. We don't wait for success; we create it through hard work and determination. When faced with challenges, we don't back down; instead, we break through barriers, recognising that true progress lies on the other side. These are the pillars that form the foundation of Oner Active. We consistently challenge ourselves to create innovative and impactful products, so that you can perform better. With our range of products and innovative approach, we provide a wide variety of colours to ensure that all skin tones genuinely radiate in Oner. Our Purpose and Mission We are on a mission to unite and empower women to be the strongest version of themselves through strength training. We want to inspire women to take centre stage in the gym by promoting strength training, which underpins all movement and sport, as a healthy foundation in life. The Data & Insights Team As one of the first hires into the growing Data & Insights team, you'll be working directly with our Data & Insights Manager to lay the groundwork for the business's data function. Our team is passionate about building scalable, reliable data solutions that empower the business to make informed, data-driven decisions across all departments. We value curiosity, proactivity, and a collaborative approach to solving complex business problems. About You We’re looking for a BI Developer to help us build robust, scalable ETL pipelines and well-structured data models to support analytics across the business. This is a hands-on role that will shape how data flows, is stored, and is made available for decision-makers at Oner Active. You’ll work with a wide range of data sources, including our e-commerce platform (Shopify), marketing tools, operations data, and more, to create automated data pipelines and define a modern, high-performance data environment on Microsoft Azure. You’ll be responsible for: Design, build, and maintain efficient ETL pipelines to ingest, clean, and transform data from multiple sources Develop robust, scalable data models to enable self-serve analytics and deeper insights Automate data ingestion processes and optimise query performance for analytical tools and dashboards Work with stakeholders across departments (marketing, operations, finance, product) to understand data requirements Own the integration and transformation of Shopify and related commerce data Collaborate with the Analytics Manager to support dashboarding and reporting Maintain data quality, documentation, and monitoring best practices You’ll need to have: Proven experience as a BI Developer or Data Engineer, ideally in a scale-up or fast-paced e-commerce environment Strong SQL skills and experience working in Microsoft Azure (Data Factory, Azure SQL, Synapse, etc.) Experience working with Shopify data and integrating e-commerce pipelines Solid understanding of data warehousing concepts, data modelling, and transformation best practices Comfortable working with APIs, flat files, and third-party tools for ingestion A proactive, problem-solving mindset and eagerness to build from the ground up Strong collaboration and communication skills Nice to have’s: Experience with dbt or similar transformation tools Exposure to Power BI, Looker, or other BI tools Familiarity with version control and deployment workflows (e.g., Git, CI/CD) Equality, Diversity, and Inclusion At Oner Active it’s about embracing diversity and empowering every individual to reach their full potential. We are committed to creating an environment where everyone feels valued, supported, and able to thrive. We welcome applications from all backgrounds and are dedicated to ensuring that everyone has equal access to opportunities during the recruitment process. If you require any reasonable adjustments or additional support, we encourage you to reach out to our Recruitment team — we’re here to support you every step of the way.