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# Data Engineer

- **Company:** Harnham
- **Location:** London, UK
- **Salary:** £70,000.0 - £90,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Big Data, Data Validation, Data Deduplication, Information Engineering, Extract Transform Load (ETL), Python (Programming Language), MongoDB, Operational Databases, Standard Sql, SQL Databases, Data Ingestion, Large Language Models, Prompt Engineering, Entity Resolution, Data Pipelines, Databricks
- **Published:** October 10, 2026
- **Apply:** https://www.reed.co.uk/jobs/data-engineer/57441401

## About the Role

* Strong Python and SQL experience
 * Proven track record building and maintaining production data pipelines
 * Experience taking ownership of end-to-end engineering projects
 * Comfortable working autonomously within a fast-paced startup environment
 * Strong problem-solving skills and technical foundations
 * Experience with LLMs, AI APIs or prompt engineering would be advantageous
 * Data scraping, large-scale data acquisition or healthcare data experience would be beneficial
 * Experience with Databricks, MongoDB or product engineering is desirable

## Description

* Build and maintain scalable ETL/ELT pipelines using Python and SQL
 * Develop data ingestion and acquisition processes for large, complex datasets
 * Leverage LLMs and AI APIs for extraction, classification and data validation
 * Design schemas and implement data modelling, deduplication and entity resolution processes
 * Work across Data Engineering, AI, product and data acquisition initiatives
 * Build APIs and data products that power customer-facing applications
 * Take ownership of projects from initial concept through to production deployment