OnHires - Senior Product Engineer (LLM / Multi-Agent Systems)
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Requirements
• graph databases (Neo4j or similar) • FastAPI or backend frameworks • experience with multi-step LLM workflows (agents, tool use, orchestration) • You’re likely a strong fit if you: • have built LLM-powered systems in production (not just demos) • LLM-powered systems in production • understand how to structure AI systems (RAG, tools, workflows, APIs) • how to structure AI systems • can debug and improve non-deterministic behavior • non-deterministic behavior • are comfortable working with messy, evolving systems • messy, evolving systems • have worked in startups or high-ownership environments • startups or high-ownership environments • What matters most • What matters most • ownership mindset • ability to move fast and iterate • ability to understand and improve existing systems • strong engineering fundamentals • Small, product-focused team (currently 4 people): • Product / project lead • Data & backend engineer (data pipelines, infra) • You — owning the AI layer • Working format • Working format • full-time (no part-time) • overlap with Portugal working hours for collaboration • Location • Location • Portugal (RU/UA speakers preferred) • Portugal (English-speaking) • Europe (English / RU / UA) • Flexible for the right person. • Contract • Contract • B2B contract (Dubai entity)
Benefits
• real product, not a prototype • direct impact on what gets built and shipped • ownership of a core system, not a small feature • fast iteration, minimal process overhead • Important to know • Important to know • This is a high-ownership role: • high-ownership role • you’ll be the main person responsible for the AI system • things move fast • not everything is perfectly structured yet • If you enjoy building, improving, and owning systems — this will fit. If you prefer clearly defined boundaries — probably not.
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