About Every WatchEvery Watch is the largest and most trusted data source in the secondary watch market. Established by a group of watch lovers, Every Watch was created in response to the increasing popularity of luxury timepieces, with the aim of bringing unprecedented transparency and insight to the watch market. The first platform of its kind, Every Watch combines all aspects of the watch world under one roof: a one-stop shop for watch collectors, vendors, and enthusiasts.Position OverviewWe're looking for Senior AI Engineer, Agents - an Agent Architect who will be responsible for designing, building, and scaling AI-powered solutions across Every Watch. Working closely with our engineering, product, sales, and data teams, they will identify opportunities where AI and LLMs can automate complex processes, improve decision-making, and create new capabilities for our users and internal teams.This is a highly hands‑on role for someone who combines strong Python and LLM engineering skills with a creative, proactive mindset. You will not simply be given a roadmap. You will be expected to understand how the business operates, identify where AI can make a meaningful difference, propose new solutions, and take them from idea to production.Our existing AI work, including Watch Chat, provides a foundation to build on. The opportunity now is to expand that foundation into a broader ecosystem of intelligent agents that can work with Every Watch's unique watch‑market data and support collectors, dealers, sales teams, data operations, and engineering.In short, we're looking for someone who doesn't just ask,"What can we build?"but"What should we build?"What you'll actually doInvent the agent roadmap. Sit with sales, data and product, find the repetitive expert work, and come back with a ranked list of agents worth building - with a real view on feasibility, cost and impact. This is the core of the job, and it doesn't stop after the first quarterBuild them yourself.



You are hands‑on. You design the architecture and you write the code - tools, loops, sub‑agents, memory, state, evaluation. Not a spec‑writer with a team underneathOwn the platform under the agents. Every new agent should be cheaper to build than the last: shared tool layer over Ever Watch data (pricing, auctions, listings, references, portfolios), an MCP surface over our existing backend, shared memory, tracing, and a reusable eval harnessHarden Watch Chat alongside us. Multi‑turn state and memory, latency, cost, tool‑call reliability, regression gates. It's live‑bound and it has to stay rightMake quality measurable. Golden multi‑turn datasets, programmatic verifiers for tool/argument correctness, LLM-as-judge on held‑out sets. If we can't measure an agent, we don't ship itTreat cost and latency as design constraints. Cheap models for routing and intent, strong models where they earn their keep;

context budgets, caching, and - where it pays off - fine‑tuning (SFT/Lo RA on curated production trajectories) instead of ever‑larger promptsWhat we're looking forCreative. You generate agent ideas the business hadn't thought of, and you can tell the difference between one that will work and one that demos well. You start from a use case, not a frameworkStrong architect. You can design an agent platform that's still standing in five years - state, memory, tool boundaries, sub-agent decomposition, evaluation, failure modes, cost. You'll be asked to critique our current architecture in the interview,



and we expect you to find thingsHeavily hands‑on. You ship. Deep production experience, writing the code yourself, at paceMust have6+ years shipping production software, of which 2+ on LLM systems that real users touchedReal agentic depth: Re Act or equivalent loops, tool/function calling, planners, state & checkpointing, long‑term memory, HITL steps, streaming. Not "I called the Open AI API." Hands‑on Lang Graph (or a strong argument for something better) plus a tracing/observability stack - Lang Smith, Langfuse or similarPython in production: Fast API, async job processing, clean service boundariesRAG done properly: retrieval + re‑ranking + relevance judgement, and honest evaluation of all threeEvaluation as a habit, not an afterthought (RAGAS/Deep Eval/GEVAL, LLM-as-judge, pass@k)Cloud production experience - AWS (Bedrock, SQS, EC2/EKS, S3) or equivalent - with Docker and CI/CDThe spine pushes back on us. We explicitly want someone who asks "why did you build it like that?" Nice to haveLLM post‑training: SFT with Lo RA/QLo RA, preference/RL methods, reward and verifier designVoice agents (Live Kit/Pipecat or similar), or vision‑language workMulti‑agent orchestration and MCP integrationsText-to‑SQL over a real, messy production schemaReport/document generation agents - structured, sourced, client‑ready outputGuardrails, PII handling, hallucination detection, risk scoringInterest in watches, collectibles or market data. Not required - curiosity about the domain isBenefitsWhat you getOwnership of Ever Watch's entire agent layer, and the roadmap for it — not a corner of someone else'sA dataset that doesn't exist anywhere else, and users who care whether the answer is rightDirect line to the CTO;

decisions in days, not quartersBudget for models, tooling, and the coding agents you want to work withCompetitive compensation, remote‑first

📌 Senior Ai Engineer, Agents (Barcelona)
🏢 Nacre Capital
📍 Barcelona