Senior AI Engineer | Worksynergy

Senior AI Engineer | Worksynergy Senior AI Engineer Posted Jul 25, 2026 ⭐ 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 L