Luis Bezerra
Software Engineer
About
I'm a software engineer passionate about building tools that solve real problems and make people's lives easier. My work focuses on back-end development and artificial intelligence, where I build scalable APIs, intelligent systems, and practical AI-powered solutions.
I started my journey in software engineering in 2016, exploring programming, systems, and technology more deeply. Since 2020, I have been working professionally in the field, gaining hands-on experience building real-world software solutions.
Experience
AI Engineer
Teddy Open Finance
- Developed an end-to-end RAG-based application for FEBRABAN compliance and audits, covering data preparation, API development, authentication, and the implementation of security layers.
- Restructured SAM Docs AI from a monolithic architecture to a multi-agent system using LangGraph; developed over 25 agents specialized in document extraction (single-agent, multi-agent, and hybrid models combining LLMs with deterministic Python) and implemented asynchronous parallel processing using Lambda and Step Functions, resulting in reduced latency and optimized LLM costs.
- Developed a multi-agent system for validating banking proposals, distributing 217 business rules across semantic domains; implemented parallel execution and contextual control to optimize token consumption, reducing validation time by approximately 75%.
- Worked on the evolution of a multi-tenant RAG knowledge base, involving document extraction, semantic chunking, hierarchical representations (full text, summary, and micro-summary), embeddings, and Q&A indexing using PGVector.
- Developed Simula House end-to-end—an intelligent WhatsApp-integrated chatbot specialized in loan and real estate financing simulations—covering architecture, implementation, integrations, and production deployment.
- Developed the conversational architecture for the NaHora and Consignado systems. For NaHora, implemented state management, query rewriting, retrieval, and tool execution; for Consignado, developed asynchronous processing with SQS, WhatsApp message debouncing, context preservation during Zendesk handoffs, and a strategy that doubled the retention rate in the first month.
Software Engineer - AI & Backend
Senai Alagoas
- Served as the technical lead for the SSCP project (SENAI Personnel Certification System), participating in technical decision-making, proposing architectural solutions, and leading the implementation of highly complex features.
- Restructured and optimized the SSCP multi-tenant architecture, resolving critical issues and enhancing both application scalability and development efficiency.
- Developed a solution based on queues and asynchronous processing to optimize embedding generation and processing within an RAG-based chatbot platform.
- Developed real-time computer vision systems using YOLO and RTSP camera streams, including people counting within defined zones, PPE detection, and optimization of processing and result transmission via WebSockets.
- Fine-tuned a YOLO model for PPE detection using custom datasets collected from RTSP cameras, adapting the model to the specific visual conditions and equipment found in SENAI environments.
Back-end Engineer
WLC Solutions
- Designed and implemented a multi-tenant architecture used in the WSaúde and O&G ADV systems, covering authentication, middleware, access control, security, and data isolation.
- Developed a ticket-based authentication mechanism and a multi-tenant tunnel for WebSocket communication within WSaúde, ensuring secure communication between clients and services.
- Developed a microservice responsible for validating and generating TISS forms—a standard established by the ANS for health information exchange—thereby enabling the technical requirements needed for a strategic contract.
Front-end Developer Intern
Communicatti Group
- I developed interfaces for approximately 20 projects, focusing on visual fidelity, responsiveness, and meeting deadlines.
Full Stack Developer Intern
City Hall of Maceió
- Worked on the development and maintenance of internal systems used to manage Maceió City Hall operations, including systems for tender management and access control.
- Investigated and remediated a critical security vulnerability in the tender management system related to reCAPTCHA integration, strengthening protection against brute-force attacks and unauthorized access.
Skills
Languages
Frontend
Backend
AI
Database
Tools
Beyond Code
Beyond programming, I'm passionate about martial arts, astronomy, reading, and games. I'm a black belt Taekwondo instructor and former competitor, and I've also practiced Kendo and Jiu-Jitsu. Martial arts have taught me discipline, focus, and resilience — values I also bring into my work.
I'm also an amateur astronomer, and I spend part of my free time exploring the night sky with my telescope. Besides that, I enjoy reading books, manga, and manhwas, as well as playing video games.