Senior AI Engineer (LLM + Multi-Agent Systems)

Backsie Inc; São Paulo; Teletrabalho; BRL 512.000 - 648.000; Tempo integral

Resumo da oferta

A pioneering technology startup seeks a Senior AI Engineer in São Paulo, Brazil, to develop emotionally intelligent chatbots. The role involves building LLM architectures and optimizing AI systems for seamless interaction. Candidates should have 4–7 years of experience in AI/NLP, and expertise in LLM fine-tuning and user experience. This opportunity starts as a contract-to-full-time position with potential equity after fundraising.

Serviços

Potential equity

Work directly with founder

Participation in Beta and fundraising

Qualificações

• 4–7 years of experience in AI, NLP, or related fields.
• Proven expertise with LLM fine-tuning and API orchestration.
• Strong grasp of RAG frameworks and context retrieval.

Responsabilidades

• Develop and deploy multi-agent LLM architectures.
• Design low-latency AI systems for interaction.
• Collaborate with engineers to integrate logic flow.

Conhecimentos

LLM fine-tuning

LangChain

OpenAI API orchestration

Multi-agent orchestration

Python

FastAPI

PostgreSQL

AWS

User experience empathy

Collaborative mindset

Descrição da oferta de emprego

At Backsie Inc (Permanent)

Expires at : 2026-01-26

Remote policy : Global remote

Role Overview

We’re seeking a highly skilled Senior AI Engineer with deep experience using LLMs to power conversational agents. You’ll lead the development of our emotionally intelligent chatbot that helps users navigate personal challenges, identify cognitive distortions, and discover constructive next steps.

Responsibilities

• Develop, fine-tune, and deploy multi-agent LLM architectures for real-time conversational experiences
• Design and optimize low-latency AI systems for seamless text and voice interaction
• Collaborate with backend engineers to structure logic flow and integrate behavioral reasoning layers
• Implement RAG (Retrieval-Augmented Generation) pipelines and safeguard relevance and accuracy
• Prototype, test, and iterate to achieve emotionally attuned and logically coherent responses
• Contribute to product direction, agent orchestration strategies, and upcoming Beta architecture

Requirements

• 4–7 years of experience in AI, NLP, or related fields
• Proven expertise with LLM fine-tuning, LangChain, or OpenAI API orchestration
• Experience with multi-agent orchestration and task distribution
• Strong grasp of RAG frameworks, vector databases, and context retrieval
• Familiarity with Python, FastAPI, PostgreSQL, and AWS preferred
• Deep empathy for user experience and mental health use cases
• Excellent communication and collaborative mindset

Nice to have

• Prior experience in mental health, wellbeing, or human-AI interaction
• Familiarity with CBT / DBT frameworks or emotional reasoning models

Benefits & Perks

We’re building something profoundly human — technology that listens and empowers. You’ll join an early-stage startup with a validated concept, working directly with the founder and core team to prepare for our Beta and Q1 2026 fundraising round.

Why Join Us

The role starts as a contract-to-full-time position with potential equity after fundraising.