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AI/ML Engineer

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DocPlanner GmbH

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Location:
Spain , Barcelona

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Contract Type:
Not provided

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Salary:

Not provided

Job Description:

We are looking for an innovative AI/LLM Engineer to drive the advancement of our conversational AI capabilities. You'll join our Tech&Product team as an AI/LLM Engineer, focusing on prompt engineering, multi-agent orchestration, automated testing, and deploying integrations in production with LLM systems. You'll work closely with Backend Engineers to deliver world-class AI experiences to end users.

Job Responsibility:

  • Design, optimize, and version prompts for production voice and chat LLM applications
  • Architect and orchestrate multi-agent systems for complex conversations
  • Build automated testing and validation frameworks for LLM outputs
  • Implement prompt versioning, storage, and retrieval systems
  • Collaborate with Backend Engineers to deploy and scale LLM-based systems
  • Integrate LLMs with communication APIs (Twilio, WhatsApp, ElevenLabs)
  • Implement RAG (Retrieval-Augmented Generation) solutions and vector search for multilingual environments
  • Monitor performance metrics and conversation quality
  • Research and prototype multi-agent frameworks (open-source and commercial)
  • Experiment with cutting-edge conversational AI and real-time speech processing techniques
  • Contribute to evolving the team's LLMOps best practices
  • Continuously improve conversational quality, RAG pipelines, and reduce latency

Requirements:

  • 2+ years hands-on experience with LLMs (OpenAI or similar, open-source models)
  • Strong knowledge in prompt engineering and LLM optimization strategies
  • Experience in evaluating LLMs, designing and running evaluation frameworks, creating test datasets, and defining success metrics
  • Familiarity with automated testing pipelines, building CI/CD-integrated eval systems that run on every prompt change
  • Experience in multi-agent architecture, from design to development of orchestration of complex LLM systems
  • Good understanding of transformer architectures and proficiency in LLM frameworks such as LangChain, LlamaIndex, or similar frameworks
  • Proficiency in Python
  • Experience with RAG pipelines and vector databases
  • Experience in cross-functional teams, ability to work in fast-moving environments where you own outcomes, not just tasks. You're comfortable with ambiguity and excited by the challenge of figuring things out.

Nice to have:

  • Experience in healthcare industries
  • LLM integration with voice platforms (Twilio, ElevenLabs)
  • Background in conversational AI, chatbots, voice assistants
  • Knowledge of real-time speech processing and multi-modal systems
  • Functional programming principles and advanced NLP
  • Exposure to OOP stacks (.NET, PHP)
  • Understanding of security and privacy in conversational AI
What we offer:
  • 100% remote work, with the option to join our offices in Bologna or Barcelona
  • Stock options plan after 6 months
  • One extra day off for your birthday
  • Access to iFeel – our mental wellbeing platform
  • €8/day meal vouchers – lunch is covered if you're in the Bologna office
  • Private health coverage via Metasalute
  • Comprehensive private health insurance with Adeslas
  • Flexoh – flexible compensation platform
  • Wellhub – gym & wellness network membership
  • Language courses

Additional Information:

Job Posted:
December 26, 2025

Employment Type:
Fulltime
Work Type:
Remote work
Job Link Share:

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