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# AI Engineer

- **Company:** Fledge
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Computer Programming, Content Analysis, Data Mining, Python (Programming Language), Machine Learning, Search Technologies, Software Engineering, Pytorch, Large Language Models, Backend, Build Management, Scikit Learn, Information Technology, HuggingFace, Restful APIs
- **Published:** August 16, 2026
- **Apply:** https://es.trabajo.org/oferta-4021-85fdd593120fc3aa07057bf611cd50a6

## About the Role

frameworks for AI systems, particularly LLMs. - Familiarity with backend development, RESTful APIs, and scalable system design. - Knowledge of ML concepts and tools (e.g PyTorch, Scikit-learn) is advantageous but not required. Nice to Have - Exposure to legal tech, data privacy, or document processing solutions - Master's degree in Computer Science, Engineering, or a related field (or equivalent experience) In return, they offer - Top of the market salary - Equity plan - Relocation support - Visa administration How to Apply If you are excited about this opportunity and believe you are a great fit for the role, please send your resume and a brief cover letter outlining your experience and what motivates you to join our client. Diversity, Equity, Inclusion and Belonging We are committed to enabling everyone to feel included and valued and trust our partners to do the same. Both the company and its culture are strongest when composed of diverse experiences

## Description

this role. Proficiency in Python is preferred. In this role, you will - Collaborate with product, design and legal teams to design and build LLM- based solutions to complex business problems. - Build and maintain scalable backend systems and APIs to support AI- driven features. - Develop tools and workflows for data extraction, semantic search, and document analysis. - Implement and work with agentic flows and enable tool use within AI systems. - Design, build, and maintain robust evaluation frameworks and metrics to measure the performance and quality of LLM-powered solutions. - Use evaluation results to drive iterative improvements and tuning of AI systems. Required Skills and Qualifications - Proven experience working with LLMs (e.g OpenAI, HuggingFace, LangChain, LangGraph). - Strong programming skills, with Python as a plus. - Experience with evaluating, experimenting with, and tuning AI models and solutions. - Experience designing, implementing, and using evaluation


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