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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - Ai Fintech Foundation (Spain) - **Company:** Hopper - **Location:** Valencia, Spain (Remote available) - **Salary:** €110,000.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Extract Transform Load (ETL), Distributed Computing Environment, Python (Programming Language), Machine Learning, Software Architecture, Scala (Programming Language), SQL Databases, Feature Engineering, Machine Learning Operations - **Published:** July 22, 2026 - **Apply:** https://www.buscojobs.com.es/senior-software-engineer-ai-fintech-foundation-spain-en-valencia-ID-363363767 ## About the Role 5+ years of experience in a similar role, ideally within production ML systems or large-scale pricing platforms Proficiency in Python, Scala, and SQL, applied to production ML systems rather than exploratory work Experience in data modelling, software architecture, and distributed data processing frameworks at scale Deep understanding of ML algorithms and when to apply them in the context of pricing, demand forecasting, or similar commercial domains Strong analytical instincts and attention to detail, with a track record of catching issues before they reach production A product mindset that keeps the customer outcome in view, even when the work is deeply technical Clear, collaborative communication skills that hold up across data science, engineering, and business stakeholder audiences Perks And Benefits Of Working With Us ## Description About The TeamNo deje pasar esta oportunidad, inscríbase rápidamente si su experiencia y habilidades coinciden con lo que se indica en la siguiente descripción.Hopper's Fintech Foundation team sits at the centre of the company's mission: reshaping how more than 100 million monthly active users experience travel.It owns the pricing engine that balances customer demand against financial risk across dozens of partners - including Capital One, Air Canada, and Spirit Airlines.As an ML engineer on this team, you will directly shape how Hopper prices ancillary products in real time and at scale.About The RoleAs a Software Engineer on the Fintech Foundation team, you will design, build, and evolve the machine learning systems that power Hopper's pricing engine.Your work will have direct impact on revenue, financial risk management, and the customer experience across the full partner portfolio.You will work closely with the Data Science, Engineering, and Product teams to deliver pricing solutions that are reliable, scalable, and oriented toward commercial outcomes.What Would Your Day-to-day Look LikeDesign and implement automated, reusable training pipelines to ensure consistent, scalable model delivery across the partner portfolioBuild ETL pipelines with thoughtful feature engineering to guarantee clean, reliable inputs for pricing modelsDevelop and deploy real-time ML pricing solutions to production, owning the full path from model to live environmentMonitor production systems for latency, drift, and training-serving skew, optimising continuously to maintain model integrityRun champion-challenger tests on pricing and product construction levers to surface improvements and respond to shifting market conditionsPartner with data scientists, engineers, and product stakeholders to translate business needs into well-scoped technical solutionsAn Ideal Candidate Has5+ years of experience in a similar role, ideally within production ML systems or large-scale pricing platformsProficiency in Python, Scala, and SQL, applied to production ML systems rather than exploratory workExperience in data modelling, software architecture, and distributed data processing frameworks at scaleDeep understanding of ML algorithms and when to apply them in the context of pricing, demand forecasting, or similar commercial domainsStrong analytical instincts and attention to detail, with a track record of catching issues before they reach productionA product mindset that keeps the customer outcome in view, even when the work is deeply technicalClear, collaborative communication skills that hold up across data science, engineering, and business stakeholder audiencesPerks And Benefits Of Working With UsWell-funded and proven startup with large ambitions, competitive salary, upsides of pre?IPO equity packages.Hopper covers the cost of employee premiums for private medical and dental coverage.Hopper also offers private life and accident coverage.Please ask us about our very generous parental leave, much above industry standards!Access to co?working space on demand through FlexDesk and a work?from?home stipend.Unlimited PTO.Hopper offers a monthly cash allowance for gym memberships and to cover home office expenses for a comfortable remote working experience.Carrot Cash travel stipend.Entrepreneurial culture where pushing limits and taking risks is everyday business.Open communication with management and company leadership.xcskxljSmall, dynamic teams = massive impact.Compensation Range: $110K - $250K#J-*****-Ljbffr ## Related Videos - [Introduction to Azure Machine Learning](https://www.wearedevelopers.com/videos/368-introduction-to-azure-machine-learning) - [Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases](https://www.wearedevelopers.com/videos/1146-fault-tolerance-and-consistency-at-scale-harnessing-the-power-of-distributed-sql-databases) - [What is relational learning and why does it matter?](https://www.wearedevelopers.com/videos/396-what-is-relational-learning-and-why-does-it-matter) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases](https://www.wearedevelopers.com/videos/1520-fault-tolerance-and-consistency-at-scale-harnessing-the-power-of-distributed-sql-databases) - [What non-automotive Machine Learning projects can learn from automotive Machine Learning projects](https://www.wearedevelopers.com/videos/397-what-non-automotive-machine-learning-projects-can-learn-from-automotive-machine-learning-projects) ## Related Articles - 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