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About the role
Within Tesco Data & Analytics, we use data to help our customers and communities. We build and run Tesco’s data platforms, architect and engineer data onto these platforms, provide capabilities and tools to the analytics community, and develop data products at scale. As a backend engineer in Data Science, you integrate our capabilities into Tesco's systems to create value. You will bring experience implementing scalable backend systems and work in the exciting ML and AI space.
Responsibilities
* Design and implement backend services and APIs using Python and FastAPI.
* Participate in system architecture and design discussions, focusing on scalability and performance.
* Translate product and data science requirements into robust technical solutions.
* Collaborate across teams to integrate machine learning models into production systems.
* Write clean, maintainable, and well-tested code.
* Conduct code reviews and provide constructive feedback to peers.
* Monitor and support production systems, resolving incidents and performing root cause analysis.
* Continuously improve development practices, tooling, and processes.
* Share knowledge and mentor others within the engineering community.
* Apply SDLC best practices to ensure reliable and maintainable software delivery.
Key Requirements
* Strong proficiency in Python, focusing on backend development.
* Hands‑on experience with FastAPI (or similar frameworks such as Flask or Django).
* Experience designing and building RESTful APIs and microservices.
* Awareness of MLOps concepts integrating ML models into production systems.
* Understanding of software engineering principles, data structures, and algorithms.
* Experience with version control (Git) and CI/CD pipelines.
* Exposure to observability tools (e.g., New Relic, Grafana, Prometheus, Splunk).
* Experience working in cloud environments, ideally Azure.
* Comfortable working in Agile environments (Scrum, Kanban).
* Ability to collaborate effectively with cross‑functional teams.
* Bonus: Experience with big‑data technologies (e.g., Apache Spark) and a background in retail, logistics, or e‑commerce.
Whats in it for you?
* Annual bonus scheme of up to 20% of base salary.
* Holiday starting at 25 days plus a personal day (plus bank holidays).
* Private medical insurance.
* 26 weeks maternity and adoption leave (after 1 year’s service) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay; we also offer 4 weeks fully paid paternity leave.
* Free 24/7 virtual GP service and Employee Assistance Programme (EAP) for you and your family, plus free access to experts supporting mental wellbeing.
About Us
Our vision at Tesco is to become every customer's favourite way to shop, whether at home or on the move. We are committed to serving customers, communities, and the planet better each day. Tesco values diversity, inclusion, and a distinctive workplace culture that recognises and celebrates differences. We offer flexible working patterns across many business areas, combining office and remote work.
Seniority level: Entry level. Employment type: Full‑time. Industries: Retail.
Location: Welwyn Garden City, England, United Kingdom.
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