Open to opportunities

Lucas Ravellys

@lucasravellys

Message

Senior software engineer building scalable backend systems and intelligent conversational AI.

Zimbabwe

Message

What I'm looking for

I’m looking for a team where I can build scalable, data-driven backend platforms and ship AI-driven conversational products—owning architecture, improving user experience and operational efficiency, and collaborating across teams on impactful systems.

I’m a Senior Software Engineer passionate about building scalable systems and intelligent products. At QuintoAndar, I build next-generation chatbot and conversational AI solutions, improving user experience and operational efficiency through robust backend systems and data-driven decisions.

I’ve led a unified knowledge base platform (microservices, BFF, Java, Spring Boot, Python, PostgreSQL) and integrated Retrieval-Augmented Generation (RAG) with content injection strategies for more accurate, context-aware responses. I also drive modern AI-driven chatbot architectures using agent-based workflows and frameworks like LangChain and LangGraph, supported by AWS serverless/event-driven patterns and databases such as PostgreSQL, MongoDB, and DynamoDB.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

QuintoAndar

Jan 2022 - Present (4 years 5 months)

Led development of a centralized knowledge base platform unifying content across end-user apps, internal operations, and chatbot systems. Integrated Retrieval-Augmented Generation (RAG) and content injection strategies to improve chatbot accuracy and context-aware responses using agent-based workflows.

Microservices Java Spring Boot Python PostgreSQL RAG LangGraph AWS Lambda Step Functions

Python Full Stack Developer

Bnex

Jan 2021 - Jan 2022 (1 year)

Developed B2B2C CRM solutions in Python and Django, supporting customer engagement and data-driven features. Built a recommendation system for targeting and personalization and implemented scalable serverless backend components on AWS.

Python Django Django REST Framework Serverless AWS Lambda Step Functions DynamoDB Redshift Recommendation Systems Data Pipelines

Software Technical Lead

Bnex

Jan 2022 - Present (4 years 5 months)

Owned user activation and high-scale WhatsApp notification systems, ensuring reliable delivery for engagement flows. Led design and implementation of a B2B2C cashback system, handling business rules and scalable serverless transaction architectures on AWS.