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BGB Group Verified
Marketing & Advertising, Pharmaceuticals, Medical Communications

AI Engineer

PortugalOnsiteFull TimePosted 22 days ago

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Required skills

  • AI agents
  • LLM-as-a-judge
  • healthcare
  • life sciences
  • marketing
  • Python
  • LLM systems
  • agent tools
  • retrieval
  • grounding

Nice to have

  • async Python
  • aiohttp
  • LangChain
  • LangGraph
  • agent framework
  • tool-calling framework

Role summary

We are seeking an AI Engineer with 3-5 years of experience to enhance our AI agent fleet and LLM systems for healthcare, life sciences, and marketing teams. Responsibilities include developing agent tools, integrating APIs, improving agent architecture, and ensuring system performance, speed, cost, and accuracy. The role involves end-to-end feature ownership from design to production support, working with real-world data and infrastructure. Qualifications include strong Python skills, experience with LLM systems, API integration, and a willingness to use AI-assisted development tools. Familiarity with async Python, agent frameworks like LangChain, and search/RAG concepts is a plus.

About Us

At BGBx, we're driven by a simple idea: breakthrough thinking creates breakthrough impact. As an independent commercial solutions partner to pharmaceutical and life science companies, we bring together strategists, scientists, communicators, creatives, technologists, and data experts to tackle some of healthcare's most important challenges.

Our teams work across consulting and communications to help clients shape strategy, launch innovations, engage stakeholders, and drive meaningful results throughout the product lifecycle. The work is complex, fast-moving, and deeply connected to improving lives, creating opportunities for curious minds to make a real difference every day.

If you're energized by collaboration, inspired by innovation, and motivated by work that matters, you'll find a place to grow, contribute, and make a meaningful impact at BGBx.

Position Overview

We are looking for an AI Engineer with 3-5 years of experience to help maintain and evolve our fleet of AI agents, LLM-as-a-judge systems, and other AI-powered tools used by healthcare, life sciences, and marketing teams. This role will work closely with senior engineers on graph design and with product and research teams to define what “a good answer” means, including grounding, coverage, and citation honesty.

You’ll join an AI-native engineering team that pushes modern tools hard, operates with high autonomy, and moves quickly - without compromising on security, reliability, or sound engineering principles. We actively use AI throughout the engineering lifecycle to accelerate development, investigation, documentation, and operations. At the same time, we care deeply about good architecture, maintainable systems, sensible controls, and knowing when not to automate.

The AI Engineer will contribute to the continued development of these systems by improving tools, retrieval and citations, agent architecture, and overall system speed, cost, and accuracy. They will also support evaluations and experiments that help us understand and improve system performance.

We are looking for someone with strong Python skills and a solid understanding of LLM systems who is excited to continue growing their technical depth. At this level, the engineer should be comfortable owning a component of a production service from design through testing and review, while partnering with more senior engineers on broader architecture and system design.

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.

    • 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.
  • Ability to write high-quality code using AI-assisted development tools such as Cursor, Codex, or Claude Code, or willingness to learn quickly.
  • Comfort working with production systems and taking ownership of features through implementation, testing, and deployment.

    • Hands-on experience with the Ximosing framework

    Nice to have 

  • Hands-on experience with async Python in production (asyncio, aiohttp, or similar).
  • Familiarity with LangChain, LangGraph, or another agent or tool-calling framework.
  • Knowledge of search and RAG concepts, including embeddings, filters, and hybrid keyword and vector retrieval.
  • Exposure to GraphQL or analytics APIs, such as Cube or similar semantic layers.
  • Understanding of logs, traces, observability, and general maintenance of production systems.
  • Comfort contributing to frontend-adjacent work when needed.

    • Why Join Us?

  • Small team energy, big company support
  • High-impact work, early responsibility-you’ll contribute from day one
  • A learning-first culture-mentorship, peer support, and space to grow
  • A genuinely fun, curious environment-we take the work seriously, not ourselves
  • Strategy meets creativity-where insight, brand, and behavior collide
  • A future-facing mission-everything we do aims to improve lives

    • If you're ready to bring curiosity, strategy, and creativity together to reimagine healthcare-and make a real difference to people’s lives, let’s talk.

    Salary range: €35,000-55,000/year

    What We Offer

    At BGBx, we invest in our people because exceptional talent drives exceptional work. We provide a competitive rewards package designed to support your health, well-being, professional growth, and life outside of work.

    Our benefits package typically includes health care insurance, retirement plans, generous paid time off and holidays, wellness benefits, life insurance, learning and development opportunities, and other resources that support our employees throughout their careers. Additional benefits may be available based on your location. Beyond benefits, you'll find a culture built on collaboration, innovation, inclusion, and the opportunity to make a meaningful impact on healthcare and the people it serves.

    BGBx is an equal opportunity employer. All applicants will be considered without regard to race, color, religion, sex, age, national origin, citizenship status, sexual orientation, disability, veteran status or any category or class of person protected by law.

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