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Senior AI Engineer (LLM / Multi-Agent Systems)

Onhires Inc.

Job Overview

Location

Portugal

Job Type

Full-time

Full Job Description

📋 Description

• Senior AI Engineer responsible for owning and evolving the AI layer of DOGER, a production system that connects real-world public data into a unified graph to answer complex cross-domain questions.
• Day-to-day work includes expanding system capabilities by adding new data sources and use cases, improving multi-step agent workflows and system logic, designing external access layers via APIs, and understanding/refactoring the existing LLM-powered system to improve reliability and predictability.
• Part of a small, product-focused team of four (Product lead, Data & backend engineer, DevOps, and you) building a live system already delivering value with rapid iteration and minimal process overhead.
• Opportunity to take full ownership of a core AI system, directly impact product direction, work with real-world data and LLMs in production, and grow expertise in multi-agent systems, graph-based reasoning, and production AI engineering in a high-autonomy startup environment.

🎯 Requirements

• Built LLM-powered systems in production (not just demos)
• Understand how to structure AI systems (RAG, tools, workflows, APIs)
• Ability to debug and improve non-deterministic behavior
• Comfortable working with messy, evolving systems
• Experience in startups or high-ownership environments
• Strong engineering fundamentals and ownership mindset

🏖️ Benefits

• Full ownership of a core AI system in a live product
• Remote work with overlap in Portugal working hours
• Direct impact on product direction and shipped features
• Fast iteration with minimal process overhead
• B2B contract via Dubai entity with individualized compensation
• Opportunity to work with graph databases (Neo4j), LLMs, and multi-agent workflows

Skills & Technologies

Python

FastAPI

Neo4j

Data Science

Senior

Remote

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Onhires Inc.

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About Onhires Inc.

Onhires is a talent acquisition platform designed to streamline the hiring process for businesses. It offers a comprehensive suite of tools that automate and optimize various stages of recruitment, from sourcing candidates to onboarding new hires. The platform aims to reduce time-to-hire and improve the quality of hires by leveraging intelligent automation and data-driven insights. Key features include applicant tracking, candidate sourcing, interview scheduling, and performance analytics, all integrated into a user-friendly interface. Onhires serves companies seeking to enhance their recruitment efficiency and build stronger teams by making the hiring journey more effective and less resource-intensive.

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