Lead Data Engineer

Dexters; Greater London; On-site; GBP 90,000 - 150,000; Full time

Job summary

Dexters, London’s leading independent estate agency, is seeking an experienced Lead Data Engineer to raise technical standards across our Data team, ensuring reliability, scalability and quality of the data platform.

This senior, hands-on role blends solution delivery with technical leadership across architecture, engineering practices and data quality, and involves mentoring engineers while collaborating with stakeholders to translate requirements into robust technical solutions.

Qualifications

• Expert SQL and Python proficiency required.
• Experience with Snowflake and dbt.
• Strong ETL/ELT and data integration knowledge.
• Automated testing, CI/CD and data quality controls.
• Experience reviewing designs and guiding engineers.
• Proven track record delivering at pace with quality.
• Clear, constructive communication.
• Hands-on leadership with mentoring responsibility.

Responsibilities

• Provide hands-on technical leadership across Data Engineering.
• Own engineering standards across architecture, code quality, testing, CI/CD, observability and documentation.
• Design, build and optimise scalable data pipelines, transformations and data models using Snowflake, dbt and associated integration technologies.
• Act as the senior technical authority for data engineering design decisions.
• Take ownership of complex data engineering problems through to resolution.
• Improve automated data quality, reconciliation and platform observability.
• Reduce key-person dependencies through better engineering patterns, automation, documentation and knowledge sharing.
• Mentor Data Engineers and develop technical capability across the team.
• Work with Data Delivery and senior stakeholders to translate requirements into well-designed technical solutions.
• Provide realistic estimates, identify risks early and communicate clearly on delivery.
• Drive continuous improvement in engineering practices and team effectiveness.

Skills

SQL

Python

Snowflake

dbt

ETL/ELT

Data modeling

CI/CD

Data quality

Leadership

Mentoring

Tools

Azure Data Factory

Airbyte

Power BI

Job description

Dexters is London’s leading independent estate agency. With a fast-paced environment and continuous growth strategy, high-quality data is increasingly fundamental to how we operate, measure performance and make decisions.

We are looking for an experienced Lead Data Engineer to raise technical standards across our Data team and strengthen the reliability, scalability and quality of our data platform.

This is a senior, hands-on role combining solution delivery with technical leadership across architecture, engineering practices and data quality.

Location: Clapham Junction

Key responsibilities:

• Provide hands-on technical leadership across Data Engineering.
• Own engineering standards across architecture, code quality, testing, CI/CD, observability and documentation.
• Design, build and optimise scalable data pipelines, transformations and data models using Snowflake, dbt and associated integration technologies.
• Act as the senior technical authority for data engineering design decisions.
• Take ownership of complex data engineering problems through to resolution.
• Improve automated data quality, reconciliation and platform observability.
• Reduce key-person dependencies through better engineering patterns, automation, documentation and knowledge sharing.
• Mentor Data Engineers and develop technical capability across the team.
• Work with Data Delivery and senior stakeholders to translate requirements into well-designed technical solutions.
• Provide realistic estimates, identify risks early and communicate clearly on delivery.
• Drive continuous improvement in engineering practices and team effectiveness.

What we are looking for:

• Expert SQL skills and strong practical experience with Python.
• Strong experience with Snowflake and dbt or comparable modern data technologies.
• Strong understanding of ETL/ELT, data integration and dimensional modelling.
• Demonstrable experience with automated testing, CI/CD and data quality controls.
• Experience reviewing technical designs and improving the work of other engineers.
• A track record of taking ownership and delivering at pace without compromising quality.
• Clear communication and the confidence to challenge constructively.
• Experience leading and mentoring engineers while remaining technically hands‑on.

Experience with Azure Data Factory, Airbyte and Power BI would be advantageous.