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Staff AI Engineer (LLM)

Tidio · Warszawa, Mazowieckie, Poland

Data Science / AI / Machine LearningLeadQuick applycontract3 days ago

About The Role

How this role works

You will start by building the system as part of our team, working in a focused, greenfield setup. After a few months of introduction to the project , you will seamlessly continue working on the same product directly with the client , becoming part of the client’s team responsible for its long-term development and scaling. There is no handover phase and no context switching - you stay with the same codebase, product, and technical challenges, while gaining long-term ownership and impact.

What you’ll work on

  • Designing, implementing, and deploying end-to-end NLP and deep learning systems
  • Building LLM-powered applications that interact with real users
  • Developing and maintaining production Python services
  • Exposing models and pipelines via REST APIs (FastAPI, Flask)
  • Working on retrieval models and techniques (RAG, embeddings, ranking)
  • Evaluating, monitoring, and continuously improving model and system quality
  • Scaling systems to handle enormous volumes of requests

Biggest challenges in this role

  • Greenfield project built from scratch
  • High-scale, user-facing systems with strict performance and reliability requirements
  • Designing systems meant for long-term ownership , not short-term delivery
  • Balancing model quality, latency, and cost in production LLM systems

What you’ll learn

  • How to build LLM-powered products from scratch and take them to production
  • Proven approaches to running LLMs in production at scale
  • How to design, evaluate, and evolve NLP systems used by real users
  • Best practices for production ML and AI system architecture

What you’ll get to try and experiment with

  • End-to-end ownership of LLM-based systems
  • Optimizing retrieval models, RAG pipelines, and inference workflows
  • Experimenting with different LLMs, prompting strategies, and system designs
  • Solving performance and reliability challenges under heavy traffic

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