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willian User
Open to opportunitiesSenior Software Engineer
Senior Software Engineer with 9+ years of experience building scalable, high-performance applications across healthcare, govtech, and B2B platforms.
BrazilSenior Software Engineer at Dendrix
About
I’m looking for a fully remote opportunity where I can contribute as a Senior Software Engineer, working on challenging backend and full-stack systems with technologies such as PHP/Laravel, TypeScript, Python, AWS, and modern architectures. I value an international environment, technical challenges, opportunities to contribute to architecture and technical decisions.
Senior Software Engineer with 9+ years of experience building scalable, high-performance applications across healthcare, govtech, and B2B platforms. Experienced in PHP/Laravel, JavaScript/TypeScript, Node.js, NestJS, Python, SQL, Redis, AWS, MVC, and Hexagonal Architecture. Recently developed a LLM application using RAG, FastAPI, LangChain, Qdrant, LangSmith, and OpenRouter, combining semantic search with contextual AI responses. Strong background in system scalability, performance optimization, and maintainable software architecture.
Experience
Senior Software Engineer
PHPLaravelVue.JsRedisPostgreSQLTypeScript
Software Engineer PHP
Developed a web platform for government bidding in the industrial sector, streamlining company registration and bid management. Improved bidding speed by 50% and reduced in-person bureaucracy.
PHPLaravelVue.JsMySQLTypeScriptReact
Software Engineer Java
Contributed to a government platform calculating the Vulnerability Index for Paraná citizens, improving data models and increasing assessment efficiency by 30%. Refactored a system with approximately 50 redundant files into a single reusable filter.
Education
Bachelor's degree in technology, Computer Systems Analysis and Development
Pursued a Bachelor's degree in Computer Systems Analysis and Development from 2017 to 2019.
Pursued a Bachelor's degree in Computer Systems Analysis and Development from 2017 to 2019.
Studies in Computer Science
Studied Computer Science from 2014 to 2016.
Studied Computer Science from 2014 to 2016.