> Markdown version of [/jobs/ext/4120171-principal-data-engineer](https://www.wearedevelopers.com/jobs/ext/4120171-principal-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). --- # Principal Data Engineer - **Company:** Harnham - **Location:** London, UK - **Experience:** Expert - **Salary:** £110,000.0 - **Contract:** Permanent contract - **Skills:** Amazon Web Services, Big Data, Information Engineering, Data Infrastructure, DevOps, Software Engineering, Snowflake, Data Management - **Published:** October 14, 2026 - **Apply:** https://www.reed.co.uk/jobs/principal-data-engineer/57456363 ## About the Role * Strong commercial experience within Data Engineering and Software Engineering * Proven expertise working with AWS, Snowflake, and dbt in modern cloud-based environments * Experience driving engineering best practices across data platforms, software development, and DevOps. * Strong people leadership skills, including coaching, mentoring, and developing engineers. * Comfortable engaging with senior stakeholders and influencing decisions across large organisations. * Experience working with large-scale data environments and complex enterprise ecosystems., * Software Engineering * Snowflake * AWS * Data Engineering * Principal Data Engineer * dbt * DevOps * People Management * Stakeholder Management * Technical Leadership ## Description Responsibilities include but are not limited to: * Provide technical leadership across Data Engineering, Software Engineering, and DevOps practices * Remain hands-on, investigating complex technical challenges and unblocking delivery teams when required * Work with AWS, Snowflake, and dbt to support and enhance modern data platforms * Lead and mentor engineers, helping to develop technical capability across the wider team * Partner with senior stakeholders across the business to influence technical decisions and priorities