¡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 heard of us?

With

over 3.800 professionals in 20 corporate offices

across Spain, Brussels, Latin America, and Asia, it generates

quality employment and helps people grow

in technical careers. Grupo Oesía

is a Spanish multinational company dedicated to

dual-use digital and industrial engineering , developing and implementing projects worldwide. At

Grupo Oesía

we believe in diversity and equal opportunities as drivers of innovation, and in inclusion as the foundation for growth. We foster an environment where everyone, without any distinction, can develop their talent and contribute to building a better future. At

Grupo Oesía , we develop technologies and services with the commitment to create a future where technology addresses the challenges of the planet and its inhabitants, to

create a better, more efficient, secure, and sustainable world. Throughout nearly

50 years of history , Grupo Oesía has been immersed in the

innovation of products and services

that benefit millions of people worldwide in the fields of healthcare, security and defense, space, telecommunications, finance, logistics, and the agri-food sector.

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