About ValeriaValeria is building the future of HR and payroll in Spain. We’re an AI-native platform that automates contracts, payroll, and compliance for companies with high employee turnover (hospitality, delivery, events, agriculture). We’re rethinking how an entire industry works—moving from manual, error‑prone processes to intelligent automation.

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We’re a fast‑growing startup backed by top investors, disrupting a €5B industry that is still stuck in spreadsheets and legacy software.
Your RoleYou’ll work closely with the AI Lead, designing product AI features and transforming internal processes with AI, helping build a cross‑functional AI team with impact across every department. You’ll be a core member of our AI team, building the agents that power Valeria in production—talking to real customers and handling real payroll and legal processes. You’ll own AI features end‑to‑end: designing agent architectures, engineering context,



building evals that hold up, and shipping reliable systems into a domain where correctness genuinely matters.
Responsibilities
- Prototype the complex: build proofs of concept that solve hard problems in innovative ways, then take them to production
- Translate business into AI: understand the business problem deeply and land it into a solid technical solution
- Design agents end‑to‑end: multi‑agent architectures, tools, tool‑calling, function calling, memory, orchestration, and state management
- Master context engineering: decide what goes into the context window and how (system prompts, few‑shot, retrieval, memory, compaction, token management), understanding why behaviour changes and anticipating failure modes (hallucinations, edge cases, prompt injection)
- Build the LLM harness: the layer around the model—tool interfaces, output parsing and validation, retries, fallbacks, guardrails, scaffoldi

📌 Mid AI Engineer (Barcelona)
🏢 Tamarind Intelligence
📍 Barcelona