At Oesia Group, we are growing We would like to count on you for our next job offer: We are looking fora Senior AI Software Engineer to join an important Project located in Madridin Hybrid job modality. What are we looking for? * An/a Senior AI Software Engineer, with at least 4years of experience. * Availability to join a stable project in Madrid. * Work Model:Hybrid * Work Schedule:Complete Requirements: * 2-4 years of experience in software development and AI. * Hands-on experience with LLMs and token cost optimization. * Experience with LLM APIs, structured prompting, tool use, and context management. * Proficiency in Python and experience with Java and/or Angular. * Knowledge of Git, pull requests, and CI/CD practices. * Experience designing and executing E2E and smoke tests. What will your responsibilities be? * Develop AI-driven software solutions. * Design and implement Spec-Driven Development (SDD) architectures. * Build and orchestrate multi-agent systems. * Integrate and optimize Large Language Models (LLMs). * Develop solutions using LLM APIs, prompting,



and tool integrations. * Ensure software quality through E2E and smoke testing. * Collaborate on the continuous improvement of development processes and solutions. What we offer you? * Work in a multinational company recognized as one of the best companies to work for in 2025, according to Actualidad Económica and Forbes. * Stable and innovative technological projects for leading national and international clients. * Career plan: we offer an attractive professional career based on experience and personal potential within a continuously evolving company with solid growth. * Free access to various training platforms, providing you with a wide multidisciplinary catalog. * Adaptable compensation. * An equal, diverse company with great Corporate Social Responsibility. * A positive, healthy, and cooperative work environment. Teamwork is the cornerstone of the company's project successes. Have you heard of us? W

📌 Senior AI Software Engineer (Madrid)
🏢 Oesía Group
📍 Madrid