We're looking for a Lead Business Analyst with strong AI expertise to join a collaborative team working on innovative software and AI solutions for a leading client.

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You'll work closely with business and technical stakeholders to identify, assess and shape AI use cases , translating business needs into valuable and feasible AI solutions.

What we're looking for

Strong experience as a Business Analyst, Product Analyst or AI Business Analyst

Strong understanding of Generative AI, LLMs and AI solution design

Hands-on understanding of prompt engineering, RAG, model evaluation and fine-tuning

Ability to assess AI use cases, feasibility, cost-benefit and business value

Understanding of hallucinations, bias, AI ethics, token management and model versioning

Experience defining AI success metrics and A/B testing approaches





Good knowledge of SQL, APIs and data quality

Experience working with Jira/Azure DevOps, Confluence and Git

Strong Agile experience, including sprint planning, retrospectives, user story mapping, acceptance criteria and backlog refinement

Excellent stakeholder management and communication skills

Ability to understand when AI should — and should not — be used

Nice to have

Figma / wireframing

ChatGPT / Claude

Hugging xbhjioe Face

AWS Kiro

ML model monitoring and drift detection

Retraining workflows

Data pipeline understanding

Location: Barcelona, 3 days/week onsite

Contract: Freelance

Rate: €330–355/day

Start date: 21 September 2026

Initial duration: Until 31 October, with expected extension

Laptop: Own laptop required

Background check: Required

📌 Lead Business Analyst - AI | Barcelona | Freelance
🏢 E-Frontiers
📍 Barcelona