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# Senior Product Engineer - Operations Domain

- **Company:** Factorial Hr
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Cloud Computing, Ruby on Rails, Software Engineering, ReactJS, Large Language Models, Multi-Agent Systems
- **Published:** September 15, 2026
- **Apply:** https://www.buscojobs.com.es/senior-product-engineer-operations-domain-en-barcelona-ID-370792317

## About the Role

The role combines hands-on system design with evaluation of AI outputs to minimize risk and improve user experience.
You'll work across a fast-growing, mission-driven team that values hands-on delivery and practical AI impact.Compensaciones / Beneficios - Design system architecture and high-level prompts for multi-agent workflows - Review and validate agent outputs with a focus on security, scalability, and maintainability - Orchestrate multiple AI agents running in parallel and ensure coherent outputs across features - Define workflows, experiment, and share findings to avoid information silos - Support integration of AI models into cloud-native environments with Ruby on Rails u**** ReactResponsabilidades - 4+ years in software engineering - Experience shipping AI-powered features - Familiarity with Ruby on Rails u**** React - Understanding of LLM architecture tradeoffs and agentic workflows - Ability to explain complex technical decisions to non-technical audiences - Experience in non-deterministic outputs and probabilistic reasoningRequisitos principales - Alan private health insurance

 - Wellhub fitness benefits - Cobee expense management - Language classes - Breakfast in the office and organic fruit - Pet friendly office

## Description

Experteer Overview As a Product Engineer at Factorial, you will drive AI-centered solutions within the Operations domain, delivering tools for managers and HR teams.You'll design architectures and multi-agent systems, shaping how AI is integrated into scalable, reliable features.The role combines hands-on system design with evaluation of AI outputs to minimize risk and improve user experience.You'll work across a fast-growing, mission-driven team that values hands-on delivery and practical AI impact.Compensaciones / Beneficios - Design system architecture and high-level prompts for multi-agent workflows - Review and validate agent outputs with a focus on security, scalability, and maintainability - Orchestrate multiple AI agents running in parallel and ensure coherent outputs across features - Define workflows, experiment, and share findings to avoid information silos - Support integration of AI models into cloud-native environments with Ruby on Rails u**** ReactResponsabilidades - 4+ years in software engineering - Experience shipping AI-powered features - Familiarity with Ruby on Rails u**** React - Understanding of LLM architecture tradeoffs and agentic workflows - Ability to explain complex technical decisions to non-technical audiences - Experience in non-deterministic outputs and probabilistic reasoningRequisitos principales - Alan private health insurance - Wellhub fitness benefits - Cobee expense management - Language classes - Breakfast in the office and organic fruit - Pet friendly office


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