Itexus is looking for an experienced Senior AI Engineer to join our engineering team and help shape a next-generation AI platform for the aviation industry.
You’ll become part of an international team building an AI layer that integrates across multiple enterprise aviation products, helping engineers and end users work with complex technical documentation, maintenance data, and intelligent workflows.
The role
combines AI engineering and backend development in roughly equal proportions. You’ll work with LLM-powered services, multi-agent systems, RAG architectures, backend APIs, and enterprise integrations while collaborating closely with an international engineering team.
Success in this role requires curiosity, ownership, and the ability to work with evolving requirements. Engineers are expected to understand product workflows, propose technical solutions, evaluate trade-offs, and independently deliver production-ready functionality.
Location:
Poland preferred, open to candidates across Europe.
What you will do
Develop backend services and APIs using Python and FastAPI
Design, develop, and maintain production-ready AI services powered by Large Language Models (LLMs)
Build and enhance multi-agent systems using LangChain and similar frameworks
Design and optimize RAG (Retrieval-Augmented Generation) pipelines
Build and improve tools used by AI agents (Harness Engineering)
Work with embeddings, vector search, and vector databases
Integrate AI capabilities into existing enterprise applications
Optimize prompts, LLM interactions, and token usage
Integrate and maintain internal and external APIs
Test, validate, and continuously improve AI-powered functionality
Participate in architecture discussions, technology selection, and technical decision-making
Understand business workflows and collaborate with stakeholders to design practical AI solutions
What we are looking for
5+ years of commercial software engineering experience
Commercial experience developing backend applications with FastAPI or similar frameworks
Experience working with Large Language Models (LLMs) in production environments
Hands‑on experience building AI applications using LangChain or similar agent frameworks
Hands‑on experience designing and implementing RAG solutions
Ability to evaluate technologies, make technical decisions, and justify architectural choices
Good understanding of embeddings, vector search, and vector databases
Experience with PostgreSQL, SQLAlchemy, and Alembic
Experience integrating REST APIs and third‑party services
Strong analytical and problem‑solving skills
Comfortable working independently with a high level of ownership and responsibility
English level B2+ or higher
Nice to Have
Experience with LangGraph or other agent orchestration frameworks
Experience with prompt engineering and LLM optimization
Experience building AI applications in production environments
Experience working with multiple vector databases (PGVector, Qdrant, Pinecone, Weaviate, Milvus, etc.)
Experience with Docker and CI/CD pipelines
Experience with Azure, AWS, or GCP
Experience with ETL pipelines, streaming technologies, or data integration tools
Experience working in startup or rapidly evolving product environments
Experience in aviation, enterprise software, or other complex business domains
Why Join Us
Work on a strategic AI initiative that spans an entire aviation product ecosystem
Build production AI solutions used by enterprise customers
Influence technical decisions and product evolution
Work in an environment with a high level of ownership, technical autonomy, and real impact on engineering decisions
Collaborate with experienced international engineers using modern AI technologies, including LLMs, RAG, agent‑based architectures, and backend services
AI Engineer (Python / LLM) in Warsaw – pracodawca: Itexus LLC
Itexus LLC to doskonały pracodawca, który oferuje elastyczne warunki pracy zdalnej oraz możliwość wpływania na strategię automatyzacji w dynamicznym zespole inżynieryjnym. Nasza kultura pracy opiera się na współpracy i innowacyjności, a pracownicy mają szansę na rozwój zawodowy poprzez różnorodne projekty i wyzwania technologiczne. Dołączając do nas, zyskujesz nie tylko stabilne zatrudnienie, ale także możliwość pracy nad znaczącymi rozwiązaniami w branży.
