Open to opportunities

Ruan Cláudio Souza

@ruanclaudio

Senior Python software engineer building production REST APIs and AI/LLM integrations with measurable performance gains.

Brazil

Message

What I'm looking for

I’m looking for a role where I can independently ship production AI/LLM features, build and optimize FastAPI services, and improve reliability and latency in cloud-native systems within an agile, fast-moving team.

I’m a senior-level Python Software Engineer with extensive experience designing production-ready REST APIs using FastAPI and Pydantic. I specialize in AI/LLM integration—especially Prompt Engineering and LangChain workflows—to build scalable intelligent systems that automate data processing and reduce manual operations.

In fast-paced agile environments, I work autonomously to deliver robust automation pipelines and cloud-native solutions on AWS. I’ve improved latency by 25%, enhanced API reliability by 23%, and achieved 99.9% data integrity through careful schema design and validation—backed by strong engineering practices like pytest and CI/CD.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer II

Current

Versari AI

Oct 2024 - Present (1 year 7 months)

Engineered FastAPI and Pydantic backend services, reducing latency for critical REST endpoints by 25%. Developed and integrated LangChain-based LLM features and prompt workflows, automating data processing and cutting manual operations by 40%.

Python fastAPI Pydantic REST APIs LangChain Prompt Engineering PostgreSQL Pytest CI CD Lang Chain

Software Engineer I

Gogix

Mar 2022 - Sep 2024 (2 years 6 months)

Built and maintained Python automation scripts and XML transformation pipelines, reducing data processing time by 28%. Improved REST API reliability and performance by 23% using structured logging and error handling with observability tools, and contributed to deploying scalable Python apps via Docker.

Python XML Processing REST APIs Error Handling Conversational AI NLP Docker Observability