Senior AI Engineer

Who we are
Lodgify is a fast-growing scale-up company leading the vacation rental industry. Backed by $30M in funding, our platform empowers property owners and managers worldwide to efficiently manage and grow their business through technology.
Headquartered in sunny Barcelona, we're now a team of 380+ people representing over 60 nationalities, united by a passion for transforming the future of short-term rentals.

⭐ Role Overview

We are seeking a Senior AI Engineer specializing in LLMs to lead the design, evaluation, and deployment of production-grade generative AI systems. In this role, you will own end-to-end LLM solutions, from prototyping to scalable production, while establishing best practices in evaluation, reliability, and responsible AI.

⭐ How will you make an impact?

  • Lead the design and development of LLM-powered applications (chatbots, copilots, agents, internal tools).
  • Own and evolve the LLM evaluation (evals) strategy, including designing gold-standard datasets and benchmarks, building automated eval pipelines and scoring systems and defining metrics for factuality, grounding, robustness, and user impact.

  • Diagnose and resolve complex failure modes (hallucinations, retrieval issues, agent breakdowns).

  • Optimize systems for latency, cost, scalability, and reliability in production.

  • Mentor junior engineers and guide best practices in LLM development and evaluation.

  • Collaborate cross-functionally with product, data, and leadership to shape AI strategy.

  • Set standards for responsible AI, including safety, bias mitigation, and observability.

  • ⭐ What makes you a great fit?

  • 5+ years of experience in software engineering, machine learning, and applied AI with a track record of driving projects to completion.

  • Strong software engineering fundamentals (testing, modular design, dependency injection) in Python.

  • A track record of taking AI and LLM-powered features from initial concept through deployment and long-term production maintenance.

  • Experience implementing automated testing strategies for non-deterministic systems, and strong debugging and analytical skills for ambiguous model behavior.

  • A strong understanding of prompt engineering and prompt lifecycle management, RAG architectures and retrieval evaluation, and LLM limitations and failure patterns.

  • Solid experience in using Data Analytics techniques (SQL, analysis and visualizations) to inform Product decisions and delivery.

  • A heavy product mindset to deeply understand our product and our customer needs to design the right solutions for them.

  • Strong tech leadership and mentorship skills, and the ability to independently drive projects to completion.

  • Clear communication of trade-offs, risks, and system performance to stakeholders.

  • ⭐ How can you earn extra bonus points?

  • Proven experience driving ambiguous projects to completion, mentoring teams, and communicating complex technical risks to stakeholders.

  • The ability to design robust, production-grade evaluation at scale using advanced metrics and statistical validation.

  • Deep expertise in model fine-tuning, adversarial red-teaming, and safety testing to protect the system from edge-case vulnerabilities.

  • Why you’ll love us:
    You’ll be part of a growing, dynamic company with a truly international team. At Lodgify, we are full of contagious energy, hard work, and passion for what we do. We celebrate diversity and are proud to acknowledge a variety of backgrounds, perspectives and skills in our team; committed to creating a workplace where everyone is heard and feels a sense of belonging.
    What's in it for you?*

    🏠 Remote Flexibility: The freedom to work from home any day that works for you.

    🌴 Time to Recharge: 25 working days of paid vacation and Jornada Intensiva in August..

    💊 Alan Health Insurance: Premium health, dental, and mental health support via Alan. Pre-existing conditions are covered.

    😋 Meal Perk: €150/month allowance on your Alan card + 50% off Ametller Origen prepared dishes at the office.

    💸 Tax-Free Savings: Increase your take-home pay by using Flexible Remuneration for extra meal costs (up to €70/mo) and public transport (up to €136/mo).

    🖥️ Home Office Gear: We provide a table, ergonomic chair, and monitor for your home setup.

    🇪🇸 Language Learning: Free Spanish classes.

    🤑 Referrals: Cash rewards for bringing in new talent.

    🌟 Social Life: Daily office breakfast and monthly team events

    🎯 Dynamic Hub: A high-energy, inclusive environment designed for collaboration and connection with a team that represents over 60 countries.

    *Benefits offered may differ based on the type of contract that is issued

    So, what are you waiting for? Apply now!

    All applications and CVs must be submitted in English 😉

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