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 Madrid in 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.
- Versátil 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 hear

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