AI Engineer - Performance Team

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for an AI Engineer - Performance Team based in Spain. As an AI Engineer focused on performance and reliability, you will play a key role in improving the quality, accuracy, and scalability of AI-powered products used by thousands of users every week. Working in a fully remote and collaborative environment, you will design, evaluate, and optimize AI agents while ensuring consistent performance in production. This role combines experimentation, analytical thinking, and hands-on development, offering the opportunity to work with cutting-edge LLM technologies and emerging AI tools. You will contribute directly to the evolution of AI systems, helping transform innovative ideas into reliable, high-impact solutions. Ideal for professionals passionate about AI performance, this position offers significant autonomy, continuous learning opportunities, and the chance to shape best practices in a rapidly evolving field. Accountabilities: Design, develop, and optimize AI agents to improve performance, reliability, and user experience across production environments. Create, maintain, and enhance evaluation frameworks to measure agent accuracy and ensure consistent quality standards. Monitor user feedback, identify performance issues, and implement improvements based on insights and real-world usage data. Conduct experiments involving prompts, models, agent architectures, and workflows to increase effectiveness and efficiency. Maintain and improve AI evaluation infrastructure, ensuring scalability, reliability, and cost-effectiveness within CI/CD pipelines. Stay informed about the latest developments in AI, large language models, and agent technologies to continuously improve solutions. Collaborate closely with engineering, product, and design teams to deliver high-quality AI-powered experiences. Document findings, share learnings, and contribute to the establishment of AI performance best practices.

Practical coding experience with Python and/or TypeScript. Demonstrated hands-on experience working with Large Language Models, either through professional projects or personal initiatives. Experience designing, building, or maintaining AI agents and agent-based workflows. Strong understanding of LLM providers, model capabilities, limitations, and performance trade-offs. Familiarity with AI development tools and frameworks, including OpenAI APIs and modern agent development ecosystems. Exposure to observability, evaluation, or monitoring tools for AI applications is considered an advantage. Experience with open-source AI models is a plus. Background in software engineering, product development, quality assurance, or data-related disciplines is beneficial. Strong analytical mindset with a passion for experimentation, testing, and continuous improvement. Comfortable working in ambiguous environments where processes evolve alongside technological advancements. Excellent communication skills and a proactive approach to sharing knowledge and collaborating with cross-functional teams. Professional proficiency in English; knowledge of Portuguese, Spanish, or Italian is considered a plus.

Competitive annual gross salary ranging from €40,000 to €60,000. Equity participation through a VSOP program. Permanent employment contract. Fully remote work environment within Europe. Flexible compensation package and employee benefits card. Company-provided MacBook and a €500 onboarding budget for workstation setup. Annual €2,000 professional development budget for learning, equipment, and remote work support. Comprehensive health insurance, with options to include family members depending on location. 25 paid vacation days per year. Additional caring days to support personal projects and social impact initiatives. Family-friendly policies, including extra paid parental leave and additional days off for birthdays. Regular team gatherings and opportunities to connect with colleagues in person. Inclusive, collaborative, and diverse company culture focused on autonomy, ownership, and professional growth. How Jobgether works