Fetcherr

LLM Architect

Fetcherr  •  Warsaw, PL (Hybrid)  •  4 months ago
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Job Description

Fetcherr is an AI-driven company specializing in deep learning, algorithmic trading, and large-scale data solutions. Our core technology, the Large Market Model (LMM), enables accurate demand forecasting and real-time, data-driven decision-making. Originally focused on the airline industry, Fetcherr is expanding its AI solutions across additional industries.

As LLM Architect, you will architect and build Fetcherr’s LLM-based virtual analyst platform from the ground up. This is a highly technical, hands-on role focused on LLM architecture, RAG pipelines, prompt engineering, vector databases, and reliability infrastructure.

You’ll work with product, data, and engineering teams to design a powerful conversational analytics engine built on state-of-the-art LLM technologies.

Responsibilities

Architecture & System Design

  • Architect end-to-end systems that combine:
  • LLMs (commercial + open-source)
  • Vector databases & embeddings
  • Retrieval-augmented generation (RAG)
  • Natural-language-to-SQL/query generation
  • Visualization and analytics libraries
  • Define the technical roadmap and system architecture for the LLM platform.

Hands-On Technical Execution

  • Build prototypes, run experiments, evaluate LLM providers (OpenAI, Claude, Gemini).
  • Develop and optimize:
  • Prompt engineering & chaining
  • RAG pipelines
  • Query translation engines
  • Auto-generated dashboards and visual outputs
  • Ensure scalability, observability, security, and cost efficiency.

LLM Expertise & Innovation

  • Lead research and experimentation for model selection, fine-tuning, context injection, and multi-agent tooling.
  • Evaluate open-source vs. commercial LLMs and architect hybrid solutions.
  • Define evaluation frameworks for accuracy, hallucinations, latency, and safety.

Organizational LLM productivity evangelist

  • Lead the organizational adoption of AI tools for improving productivity and quality

Cross-Functional Technical Leadership

  • Work closely with product managers and customers to shape use cases.
  • Provide technical mentorship to LLM engineers, backend developers, and data engineers.
  • Be the internal expert and advocate for LLM technologies across Fetcherr.

Requirements

  • Deep knowledge of LLM system architecture:
  • RAG, embeddings, vector search
  • Prompt engineering & prompt chaining
  • Data-to-text generation & visualization tools
  • Python, backend systems, cloud infrastructure (GCP preferred)
  • Experience with LLM frameworks (LangChain, LlamaIndex, Hugging Face).
  • Experience with APIs like OpenAI, Anthropic Claude, Gemini, etc.

Leadership & Product Thinking

  • Experience delivering complex 0→1 AI systems.
  • Ability to translate business needs into technical architectures.
  • Strong communication skills for explaining LLM decisions and trade-offs.

Nice to Have

  • Experience with BI/analytics or natural language interfaces to data.
  • Knowledge of multi-agent systems or tool-augmented LLMs.
  • Background in airline, pricing, or financial domains.
Fetcherr

About Fetcherr

Founded in 2019, Fetcherr is at the forefront of AI-driven solutions for the airline industry. Specializing in dynamic pricing and market forecasting, Fetcherr’s core product, the Generative Pricing Engine (GPE), leverages the Large Market Model (LMM) to optimize revenue and operational efficiency. The LMM simulates market dynamics, allowing the GPE to adjust and react in real-time to each part of the operational pipeline, from pricing to inventory management.

Partnered with industry giants like Delta Airlines, Virgin Atlantic, WestJet, Azul and Viva Aerobus, Fetcherr’s technology empowers airlines to make real-time, data-driven decisions, ensuring a competitive edge and sustainable growth.

Fetcherr’s AI-driven approach has demonstrated significant revenue generation uplift, transforming traditional revenue management processes and enhancing overall airline profitability.

Industry
IT & Software
Company Size
51-200 employees
Headquarters
Netanya, IL
Year Founded
2019
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