Senior AI Engineer | LLM & Conversational Systems

Avenue Code
Full-time Brazil, Brazil Arquitetura e design de software
Posted:
February 25, 2026
Location:
Brazil, Brazil, Brazil

Job Description

Senior AI Engineer | LLM & Conversational Systems

We are looking for a highly specialized professional to work on the development and optimization of advanced Artificial Intelligence solutions, with a focus on Large Language Models (LLMs), Prompt Engineering, RAG Systems, AI Security, and Conversational Chatbots. This role requires solid experience in NLP, modern architectures, and security best practices to ensure high performance, reliability, and scalability.

Responsibilities

  • Advanced Prompt Engineering: Create, test, and refine sophisticated prompts for LLMs, applying techniques such as few-shot learning, chain-of-thought, and self-consistency.
  • RAG Systems (Retrieval-Augmented Generation): Design data pipelines, implement embeddings, and optimize retrieval mechanisms integrated with generative models.
  • LLM Security: Develop strategies against adversarial attacks (prompt injection, jailbreaking), ensuring input sanitization ...

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Job Overview

Job Type: Full-time
Location: Brazil, Brazil
Posted: February 25, 2026
Deadline: April 06, 2026