William Lumme

• LinkedIn: william-lumme
• GitHub: wlumme
• Codeberg: wlum

Summary

Data Engineer who is passionate about creating high-quality software and delivering it efficiently. Currently looking for a new challenge - new responsibilities, new technologies, or a new business domain.

Experience

Asda

Lead Data Engineer | July 2025 – present

Data Engineer | Nov 2023 – July 2025

• Managed several data products as a technical lead, including Ingestion, Egress, Entity Resolution, Segmentation, Visualisation, as well as the Customer, Transaction, and Product data models.
• Created a template for CI/CD pipelines now used as standard across the department.
• Created library shared by multiple squads for managing database objects declaratively.
• Defined coding standards and ways of working, with emphasis on Software Engineering best practices.
• Strived to improve engineering maturity and culture across the business.
• Collaborated with internal and external stakeholders to understand requirements and prioritise work.
• Developed ETL pipelines with data quality checks, unit/integration tests, and CDC.
• Skills: Azure, Bash, Databricks, Python, Spark, SQL

Microsoft

Data Analyst | Nov 2022 – Nov 2023

• Communicated market insights for the Xbox and Windows Surface EMEA businesses.
• Automated the creation of weekly reports.
• Presented impact of new marketing strategies.
• Skills: Python, SQL

Atos

Cloud Developer | Feb 2021 – Oct 2022

• Developed API integration layer for cloud enterprise systems.
• Developed system for requesting access to virtual machines for internal learning tool.
• Skills: AWS, Azure, GCP, SQL, Terraform

Education

Durham University

MEng in Mechanical Engineering (2:1) | Oct 2016 – June 2020

Certifications

• Microsoft Azure: Data Engineer Associate, Data Scientist Associate, Developer Associate
• Scaled Agile Framework: SAFe 5 Practitioner

Skills

• Programming: Bash, Git, Python, SQL
• Technologies: AWS, Azure, GCP, GitHub, Databricks, Spark, Terraform
• Engineering Practices: Data Modelling, Medallion Architecture, Test-driven Development
• Cultural Practices: Agile, DevOps, Feature-orientated teams, Iterative Development
• Languages: English (native), French (proficient)