Open to opportunities

Ribamar User

@ribamaruser

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Senior Software Engineer building scalable backend systems and production-ready LLM solutions.

Brazil

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What I'm looking for

I’m looking for a team where I can build reliable, high-performance systems that bring AI into real-world products—combining backend engineering with LLM agents, RAG, and scalable deployment, while collaborating closely across disciplines.

I’m a Senior Software Engineer with 8+ years of experience building scalable backend systems and integrating LLM-powered solutions into production. I specialize in designing AI agents, RAG pipelines, and data-driven systems using Python, Node.js, and .NET Core—always focused on reliability and real-world impact.

In my recent roles, I’ve led engineering efforts to deliver responsive, secure, and maintainable B2B applications, including customer management ecosystems with role-based access controls and production support that improved overall stability. I also build systems that translate complex data into usable experiences through RESTful and GraphQL integrations, reusable UI components, and predictable state management.

I’ve also driven machine learning work with Databricks for market strategy research, built generative AI agents using OpenAI’s API with LlamaIndex and LangChain, and developed reinforcement learning projects using PyTorch. I care about end-to-end execution—from model inference and deployment to scalable microservices with Docker, Kubernetes, and CI/CD—so teams can ship faster without sacrificing quality.

Experience

Work history, roles, and key accomplishments

Current

Lead Software Engineer

Current

TopFlight

Jul 2024 - Present (1 year 11 months)

Built and scaled modern B2B web applications, delivering responsive, secure, and maintainable features across multiple client projects. Integrated RESTful and GraphQL APIs and supported production troubleshooting and performance improvements.

Senior Software Engineer

ITC Management Group

May 2023 - Jun 2024 (1 year 1 month)

Led machine learning and generative AI initiatives, including LLM-powered conversational agents and deployed ML models into production workflows. Built supporting big data and cloud-native systems, including microservices, secure API authentication, monitoring, and CI/CD deployment.

Software Engineer

Checlabs

May 2019 - Apr 2023 (3 years 11 months)

Built and scaled full-stack web applications, including a customer management ecosystem with role-based access controls. Developed SPAs with predictable state management and collaborated with backend teams to integrate RESTful and GraphQL APIs with production support.