AI Engineer, Healthcare AI Systems (Lisbon)

BGBx; Lisboa; On-site; EUR 35,000 - 55,000; Full time

Benefits offered by this job

Health care insurance

Retirement plans

Generous paid time off

Job summary

BGBx in Lisbon, Portugal, is seeking an AI Engineer with 3-5 years of hands-on experience to maintain and evolve AI agents, LLM-as-a-judge systems, and related tools across healthcare, life sciences, and marketing teams.

You will work with senior engineers on graph design and define what constitutes a good answer, focusing on grounding, coverage, and citation honesty while improving tools, retrieval, and system efficiency.

Qualifications

• 3–5 years of hands-on engineering experience, ideally working with data and/or AI systems.
• Professional experience writing and testing Python.
• Experience integrating APIs, including reading documentation and working with pagination, timeouts, authentication, and complex JSON responses.
• Experience using LLMs as a developer and an interest in building reliable AI systems, including addressing issues such as hallucinations, incorrect citations, and context limitations.

Responsibilities

• Agent tools: Create new agent tools and improve existing ones across retrieval and grounding, vector and keyword search, live-source search, analytics queries, PDF generation, and more.
• Integrate external APIs and data sources into our agent systems, including Pinecone, Meilisearch, Hasura, Cube, and GCP.
• Graphs and middleware: Extend and improve our agent state machines, including skill resolution, tool-calling loops, review gates, answer post-processing, and token guards.
• Observability and operations: Work with real production data and infrastructure and help improve the observability, reliability, and ongoing maintenance of our AI systems.
• End-to-end ownership: Own features from design and implementation through testing, deployment, and production support.

Skills

Python

LLM systems

APIs integration

Developer tooling

Tools

Cursor

Codex

Claude Code

LangChain

Job description

BGBx in Lisbon, Portugal, is seeking an AI Engineer with 3-5 years of hands-on experience to maintain and evolve AI agents, LLM-as-a-judge systems, and related tools across healthcare, life sciences, and marketing teams.

You will work with senior engineers on graph design and define what constitutes a good answer, focusing on grounding, coverage, and citation honesty while improving tools, retrieval, and system efficiency.