Senior Software Engineer - AI Fintech foundation (UK)

Hopper is on a mission to reshape how travelers experience travel through innovative fintech solutions. As a Senior Software Engineer on the Fintech Foundation team, you will design and build machine learning systems that power Hopper's pricing engine, directly impacting revenue and customer experience.

Responsibilities:

• Design and implement automated, reusable training pipelines to ensure consistent, scalable model delivery across the partner portfolio
• Build ETL pipelines with thoughtful feature engineering to guarantee clean, reliable inputs for pricing models
• Develop and deploy real-time ML pricing solutions to production, owning the full path from model to live environment
• Monitor production systems for latency, drift, and training-serving skew, optimising continuously to maintain model integrity
• Run champion-challenger tests on pricing and product construction levers to surface improvements and respond to shifting market conditions
• Partner with data scientists, engineers, and product stakeholders to translate business needs into well-scoped technical solutions