Senior Backend Engineer – AI Agents

We are building seQura's Smart Agent platform, an intelligent agent system that guides shoppers before, during, and after their purchases. This role requires building solid, production-grade backend systems that allow these agents to reason over shopper needs safely and effectively.

Requirements

• 5+ years of experience as a Backend Engineer
• Experience in production-grade backend systems (Ruby on Rails preferred; Python, Kotlin, Java, Elixir, or JS also valued)
• Strong knowledge of OOP, clean coding, TDD, and agile principles
• Experience with agentic systems or LLM-powered agents (RAG, workflow orchestration, chatbots)
• English proficiency (Spanish nice to have)
• Attitude, ownership, and pragmatic mindset—able to build backend systems that support AI agents without needing DS skills

Benefits

• Secure, reliable, and supportive workplace with freedom to contribute your best
• Fellowship and supportive culture fostering a sense of belonging
• Challenging projects to grow your skills and knowledge
• Unique, inspiring office environment in Barcelona
• 23 vacation days + 2 free disposal days/year
• Flexible compensation plan for transportation, restaurants, and kindergarten with Cobee
• Health insurance discounts with Sanitas and DKV
• Flexible working hours and hybrid or remote options
• Personal budget for professional development
• Office workshops and meet-ups for community participation and career growth
• Work visa and relocation support to Barcelona
• Holistic Wellness Program covering occupational, physical, financial, emotional, social, and environmental consciousness, with 34 activities to choose from