Posted Jul 9, 2026

Senior AI Engineer

Apply Now
⭐ 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. ⭐ 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. ⭐ 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?*  The freedom to work from home any day that works for you.  Enjoy 25 working days of paid vacation and Jornada Intensiva in August.  Top-notch Cigna health insurance (includes travel insurance, dental plan, psychologist and we cover pre-existing conditions too).  Save on meals! Enjoy a monthly allowance of 150€ and, in addition, a Flexible Remuneration plan with up to 70€. Plus, enjoy a 50% discount on Ametller’s prepared dishes to level up your mealtime!  Flexible Remuneration options for your transportation needs. ️ Elevate your workspace. We provide a home-office setup allowance to ensure you have everything you need for a productive and comfortable work environment.  Free Spanish classes.  Boost your earning potential with our referral program that offers paid compensation.  Fuel your day with a daily office breakfast buffet and join our monthly events like football tournaments, wine tastings, hikes, kayaking and more!  Work in a dynamic environment with offices fully equipped for fun with ping pong, foosball, surrounded by an international team of +60 nationalities. *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