AI Engineer

• Design and implement AI-powered applications, from prototypes to production systems
• Integrate and orchestrate LLMs and agents into end-to-end software products and workflows.
• Work directly with clients to understand requirements and explain technical solutions
• Collaborate with cross-functional teams to ensure high-quality, maintainable code
• Keep up with new AI tools and bring useful ideas into the team

• 2+ years of relevant professional experience
• Strong programming skills in Python and solid understanding of software engineering principles
• A habit of using AI tools to boost productivity and improve quality across your work
• Interest and experience with modern AI frameworks and APIs (LLMs, embeddings, vector stores)
• Ability to build backend services and APIs
• Familiarity with cloud platforms such as AWS, Azure and GCP
• Clear communication and a proactive, self-directed approach to work.
• Ideally fluent in English, Spanish and Catalan

• Competitive salary
• 25 days of paid vacation per year
• Flexible and hybrid working model (2 days in-office per week)
• Modern office located at Pier 1, Barcelona Tech City, near Barceloneta and the beach
• Private health insurance covered by the company
• Up to 220€ per month in “ticket restaurante” and 136€ per month in “ticket transport” (optional salary deductions with tax benefits) Inscribirse en esta oferta

Napptilus Tech Labs Barcelona, Catalonia, 08039 CERRARÁ PRONTO Inscribirse en esta oferta About Napptilus: Napptilus is an innovative technology company with over 15 years of experience in software development, R&D and creating successful startups. Our diverse and talented team includes engineers, technical specialists, designers, marketing strategists, and entrepreneurs, enabling us to consistently deliver cutting-edge technological solutions to our clients. Role Overview: The AI team at Napptilus helps companies in Spain and internationally turn the potential of artificial intelligence into practical business results. We design and build LLM-based systems and AI-driven products that create real impact for our clients. We’re looking for Applied AI Engineers who are strong software developers and curious about how AI can solve real business problems. You’ll work directly with clients, help shape projects from concept to delivery, and build reliable systems that use AI where it truly adds value.