Senior Data Engineer (Part Time)

Job Title: Senior Data Engineer Location: West London, UK | Flexible hybrid working Type: Permanent or Contract (Outside IR35), part-time (2 days per week) - Our client is a clean tech start-up who are seeking a Senior Data Engineer to lead the creation of a secure, scalable, and future-proof data platform. This is a strategic, part-time role (2 days per week) that combines hands-on technical delivery with leadership responsibilities. You'll build the foundations of the company's data systems while also recruiting and mentoring a junior data engineer to take on day-to-day operations under your guidance. You'll be at the heart of how data is captured, processed, and utilised, working closely with the R&D team to enable meaningful analysis and insights. By embedding security, governance, and best practices from the outset, you'll ensure the data platform grows seamlessly alongside the business. What you'll do • Design, implement, and manage a scalable and secure data platform from scratch. • Select and configure the right tools, services, and infrastructure for data storage, integration, and processing. • Build and maintain pipelines to ingest, clean, and transform data from multiple sources. • Collaborate with R&D teams to provide structured datasets that support research and analysis. • Drive data quality, consistency, and governance through monitoring and validation processes. • Develop the foundations for analytics, dashboards, and reporting to generate actionable insights. • Continuously improve data systems and workflows to support future growth. About you We're looking for someone with: • AWS • Proven experience building data platforms from the ground up. • Hands-on expertise with modern data engineering tools, cloud platforms, and database technologies. • Strong knowledge of pipeline design, ETL processes, and data warehousing. • A track record of embedding data quality, governance, and security best practices. • Experience mentoring, training, and developing junior engineers. Bonus points if you: • Have experience in start-up or scale-up environments. • Enjoy working in fast-paced, collaborative settings.