> Markdown version of [/jobs/ext/2816257-data-engineer-twe46775](https://www.wearedevelopers.com/jobs/ext/2816257-data-engineer-twe46775). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Data Engineer - TWE46775 - **Company:** twentyAI Ltd - **Location:** London, UK - **Contract:** Temporary contract - **Skills:** Microsoft Azure, Data Intelligence, Performance Tuning, Azure Data Factory, Data Lakes, Pyspark, Databricks - **Published:** September 10, 2026 - **Apply:** https://www.collegerecruiter.com/job/2858100845-data-engineer-twe46775 ## About the Role * Proven, hands-on delivery of Databricks / Delta Lake builds - ACID transactions, time travel, schema evolution, and performance tuning (OPTIMIZE, Z-ordering, VACUUM) * Strong command of medallion architecture and PySpark, lazy evaluation, partitioning, broadcast joins, and diagnosing partition skew * Solid Azure data platform experience; familiarity with Azure Analysis Services or a comparable semantic layer is a plus * Confidence engaging senior, non-technical stakeholders and translating between technical and business needs * Experience working within Private Equity is highly desirable - wider Financial Services is accepted ## Description You'll design and build the firm's first Databricks instance, standing up a medallion architecture (bronze/silver/gold) on Azure and integrating it with the firm's existing portfolio administration and data intelligence platforms. The environment you build will become the firm's golden data source. ## Related Videos - [Empowering Retail Through Applied Machine Learning](https://www.wearedevelopers.com/videos/976-empowering-retail-through-applied-machine-learning) - [PySpark - Combining Machine Learning & Big Data](https://www.wearedevelopers.com/videos/44-pyspark-combining-machine-learning-big-data) - [From Messy Queries to Scalable Systems - How Data Engineering actually works](https://www.wearedevelopers.com/videos/100203-from-messy-queries-to-scalable-systems-how-data-engineering-actually-works) - [Cutting LLM Costs Without Cutting Quality: How to Beat Proprietary LLMs with Fine-Tuned Open Source](https://www.wearedevelopers.com/videos/100151-cutting-llm-costs-without-cutting-quality-how-to-beat-proprietary-llms-with-fine-tuned-open-source) - [OLTP in the Lakehouse: Redefining Data for AI Workloads](https://www.wearedevelopers.com/videos/2038-oltp-in-the-lakehouse-redefining-data-for-ai-workloads) - [Data Science in Retail](https://www.wearedevelopers.com/videos/586-data-science-in-retail) ## Related Articles - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Data Analyst Salary in the UK](https://www.wearedevelopers.com/magazine/278-data-analyst-salary-in-the-uk) - [Coffee with Developers - Maria Apazoglou - Making AI understandable for all in production](https://www.wearedevelopers.com/magazine/475-coffee-with-developers-maria-apazoglou-making-ai-understandable-for-all-in-production) - [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix)