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Leticia Amancio

Senior Software Engineer · Java & JVM Ecosystem

12+ years building high-concurrency financial systems and backend infrastructure. Currently at Mercado Livre. Open-source contributor, tech speaker, and Java community builder.

Read more about me
Java 21 Spring Boot Kotlin Kafka Clean Architecture LangChain4j Virtual Threads
// recent posts

Building a career copilot with Java 21 and LangChain4j

May 1, 2026 · 8 min read · AI/agents
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// talks & community

Bumblebee: my career copilot with Java and AI

2026

Spring Boot + LangChain4j + ReAct pattern to build an AI agent that helps navigate career decisions. Live demo, open source.

MeetUp LINUXtips SP Oracle
// contact & links
linkedin.com/in/leticiaamancio github.com/lleamancio lleamancio@gmail.com