Senior Product Development AI Engineer - Barcelona

We are looking for a Senior Product Development AI Engineer to join our AI Engineering team in Barcelona. This is an exciting opportunity to work on cutting-edge AI-powered software, building reliable, scalable solutions that leverage Python, cloud technologies (Azure/AWS), microservices, and LLM-based applications.

You will be joining a small skilled engineering team with expertise in backend development, AI/ML and cloud services. If you have strong skills in Python backend engineering, cloud ecosystems, and AI-driven solution development, we would love to speak with you.

About You – experience, education, skills, and accomplishments

· Bachelor’s degree in computer science, Software Engineering, or a related field, or equivalent experience.

· At least 5 years of professional software engineering experience, including at least 4 years developing backend systems in Python (APIs, microservices, ETL pipelines).

· At least 5 years of experience working in cross-functional, agile teams, collaborating with Product, Cloud Ops, Architecture, Engineering, and SMEs.

· At least 3 years of experience working with LLMs or agentic AI applications, with demonstrable understanding of their reliability challenges.

What you’ll need to succeed...

· Experience with AI/ML workflows, such as RAG, vector databases, or evaluation techniques.

· Experience working in cloud environments (Azure or AWS), including deploying or integrating backend services.

· Experience contributing to or defining software architecture for complex systems.

It would be great if you also have...

Experience mentoring or providing technical guidance to other engineers.

What will you be doing in this role?

· Translating ideas, requirements, and problem statements from product teams into high-quality, reliable code and working proof-of-concepts.

· Collaborating closely with Product Engineering, Product Management, SMEs, Cloud Operations and Solution Architecture to understand needs and deliver technical solutions.

· Building and iterating LLM-based or agentic AI applications, ensuring reliability, quality, and awareness of AI limitations.

· Leading the technical approach on assigned work by taking initiative and ownership from design through implementation.

· Testing, validating, evaluating and continuously improving solutions through unit tests, automation, and iterative development.

· Progressing projects from initial concept to prototype and contributing to the technical plans needed to move them toward production.

· Supporting central platform and other initiatives for AI developmnet.

· Working in an agile, fast-paced environment, adapting priorities based on business needs and contributing to a culture of continuous improvement.

About the Team

Our team is part of the LS&H Innovation group, focused on developing AI-driven capabilities across the Commercial and Medtech organisation. The immediate team consists of the 4 engineers who work closely with the different stakeholders to deliver AI features in their products. We operate within a broader AI Innovation ecosystem that includes multiple software engineering teams and a dedicated Product Management function. Collaboration across these groups is central to how we explore opportunities, build innovative solutions, and accelerate AI adoption across the organization.

Hours of Work

This is a full-time position, primarily working core business hours in CET time zone, with flexibility to adjust to various global time zones as needed.

This is a hybrid position working in the office 2-3 days a