At M47, we spark AI! We help tech companies understand
how AI can drive their strategic objectives and effectively plan an
implementation roadmap. Our mission is to leverage AI to create
solutions that can understand, interpret, and respond to human
language, empowering businesses and making better-informed
decisions. Join us in making the future more intelligent! About
your day-to-day: You will join our Conversational AI team as the
dedicated engineer for a key enterprise client project. You'll own
the full lifecycle — from prompt engineering and knowledge base
design to system integration, voice pipeline configuration, and
continuous performance optimization. This is an end-to-end
ownership role: your decisions directly shape the quality and
reliability of a live conversational AI product. Design, build, and
continuously improve chatbot and voicebot solutions using LLMs, NLU
models, and agentic AI frameworks. Engineer prompts and structure
knowledge bases to ensure accurate, context-aware responses across
diverse user intents. Build and maintain system integrations across
platforms using APIs and data pipelines to enable seamless
end-to-end automation. Configure and optimize STT/TTS systems for
high-quality voice performance and smooth telephony integration.
Implement AI safeguards and governance measures to ensure safe,
reliable, and unbiased model behavior. Proactively monitor model
performance, identify gaps, and drive optimization without waiting
to be asked. Document architectures, configurations, and deployment
procedures to ensure transparency and reproducibility. Collaborate
with product, engineering, and business stakeholder teams to align
solutions with client goals. This is for you if you have: At least




2-4 years of relevant experience Experience with AI models for
chatbots or voicebots Experience with model evaluation, tuning, and
deployment Knowledge of conversational AI platforms for chatbot and
voicebot development.( Cognigy or equivalent ) Experience with
speech technologies: STT (speech-to-text) and TTS (text-to-speech)
systems Model deployment and integration skills, including APIs and
system integrations Ability to monitor, evaluate, and optimize AI
models for performance, scalability, and reliability Understanding
of AI safety, bias mitigation, and ethical practices in
conversational AI Ability to document architectures,
configurations, and deployment procedures clearly Collaboration
skills to work with product, engineering, and UX teams Strong
English communication skills — written and spoken. Bonus points if
you have: Experience designing hybrid bot architectures combining
NLU and LLM approaches. Familiarity with ML ops practices — model
versioning, monitoring pipelines, deployment automation. Experience
working directly with enterprise clients in a technical delivery
capacity. A proactive learning mindset and genuine curiosity about
where conversational AI is heading. What is in it for you? ??
Indefinite full-time contract ☀️ Office located at the heart of
Barcelona and hybrid working model. ? Comprehensive compensation
package, including private medical insurance coverage and adaptable
remuneration through Coverflex, including meals, gym pass,
transport, and kindergarten. ?Learning budget to support your
career ambition. ?Access to Urban Sports (wellness app) ? TaxDown
to cover your tax declaration ? Great international, inclusive, and
dynamic work environment (more than 20
nationalities!)

📌 AI Engineer (Cataluña)
🏢 M47
📍 Cataluña