> Markdown version of [/jobs/ext/2668224-senior-data-engineer](https://www.wearedevelopers.com/jobs/ext/2668224-senior-data-engineer). 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). --- # Senior Data Engineer - **Company:** Harnham - **Location:** London, UK - **Experience:** Expert - **Salary:** £70,000.0 - £80,000.0 - **Contract:** Permanent contract - **Skills:** Cloud Computing, Cloud Database, Customer Data Management, Database Queries, Python (Programming Language), Marketing Information Systems, DataOps, Snowflake, Data Pipelines - **Published:** September 2, 2026 - **Apply:** https://www.reed.co.uk/jobs/senior-data-engineer/57298688 ## About the Role * Strong Python experience for production-grade engineering and integration work * Strong SQL skills and experience building data pipelines and warehouse solutions * Experience with cloud technologies, ideally GCP, Snowflake or similar environments * Understanding of data modelling and modern data engineering best practices * Experience deploying, testing and maintaining production systems * Consultancy, agency, startup or client-facing experience would be advantageous * Experience working with customer, CRM or marketing data would be beneficial ## Description * Build and maintain data pipelines and integrations across a range of customer, CRM, marketing and behavioural data sources * Own and develop cloud-based data infrastructure across GCP, Snowflake and client environments * Design and implement data models, transformations and scalable warehouse solutions * Deliver technical solutions for client data platform projects, including customer data platforms and CRM integrations * Work directly with clients and stakeholders to understand requirements and provide technical expertise * Support the ongoing improvement of engineering standards, processes and platform capabilities ## Related Videos - [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) - [Tomorrow's cloud data platforms - fully managed database-as-a-service (DBaaS)](https://www.wearedevelopers.com/videos/254-tomorrow-s-cloud-data-platforms-fully-managed-database-as-a-service-dbaas) - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Hacking AI at the Edge of the Indian Ocean](https://www.wearedevelopers.com/videos/100177-hacking-ai-at-the-edge-of-the-indian-ocean) - [Modern Data Architectures need Software Engineering](https://www.wearedevelopers.com/videos/1030-modern-data-architectures-need-software-engineering) - [Databaseless Data Processing - High-Performance for Cloud-Native Apps and AI](https://www.wearedevelopers.com/videos/1024-databaseless-data-processing-high-performance-for-cloud-native-apps-and-ai) ## Related Articles - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Data Analyst Salary in the UK](https://www.wearedevelopers.com/magazine/278-data-analyst-salary-in-the-uk) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk)