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LLM Architect

Fetcherr

Fetcherr

IT
Netanya, Israel
Posted on Dec 16, 2025

LLM Architect

  • R&D
  • Netanya
  • Full-time

Description

About Fetcherr

Fetcherr specializes in deep learning, algorithmic forecasting, and dynamic markets. The company is building a new generation of LLM-powered analytical systems that will transform how businesses interact with data.

As the Tech Lead for LLM Systems, 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.