Available for collaboration

Lucas Viana Maia

Backend & AI Software Engineer

Based in Brazil · Open to remote work

Software Engineer specialized in Java backend development and Generative AI architecture. I design modular platforms for orchestrating autonomous agents integrated with corporate systems. Strong background in System Design, relational data modeling, concurrency control, and resilient API integration.

Let's build something See selected projects

↓ Download CV (EN) ↓ Download CV (PT-BR)

Years of experience

15+

Automation flows deployed

12+

Core technologies

About

About me

Software Engineer specialized in Java backend and Generative AI architecture. Experience building modular platforms for orchestrating autonomous agents integrated with corporate systems. Practical application of LLMs in production environments with emphasis on transactional consistency, state management, and operational reliability.

—Experience designing modular platforms for autonomous agent orchestration.
—Strong background in System Design, relational data modeling, and concurrency control.
—Hands-on integration with LLM APIs, function calling, and structured response validation.
—Practical application of LLMs in production with transactional consistency and state management.
—Project analysis and technical communication between business and engineering.

Languages: Portuguese (Native) · English (Advanced)

Core Stack

Java 25 Spring Boot 3 PostgreSQL OpenAI API Docker Git

Engineering Concepts

System Design Modular Monolith REST APIs Design Patterns Data Modeling Concurrency API Integration Generative AI

Experience

Career journey

2024 — Present Current

AI & Backend Engineer — Independent Practice

Brazil — Remote

Developing AI-powered automation products for industrial and corporate clients.

·Developed a full-cycle sales agent for the industrial sector, automating lead intake, qualification, technical recommendation, and proposal generation.
·Implemented hybrid decision logic combining deterministic rules and LLM reasoning for product selection, price calculation, and assisted negotiation.
·Automated structured proposal generation with integration to digital signature platforms.
·Built backend services in Java (Spring Boot 3) exposing REST APIs with PostgreSQL persistence.
·Containerized application with Docker and managed Dev/Prod environments using Spring profiles.

2021 — 2024

Technical Project Analyst — BMC Hyundai

São Paulo — Remote

Analysis, validation, and delivery of internal technology initiatives. Progressed from intern to a role with increased analytical and technical responsibility.

·Translated operational needs into structured system requirements.
·Developed executive dashboards in Metabase using advanced SQL for real-time KPI monitoring.
·Performed technical validation of digital deliveries and identified structural improvements in legacy processes.
·Progressed from intern to analyst with increased analytical and technical responsibility.

Projects

Selected work

Engineering Highlight

Personyx Core

Multi-Tenant Agent Orchestration Platform

Proprietary framework for creating, managing, and scaling multiple AI agents via WhatsApp, built with a modular architecture that separates the platform core from client-specific business logic. Handles the full message lifecycle from webhook reception through AI processing to delivery, with concurrency control, encryption, and real-time monitoring.

Message Pipeline

Twilio → Webhook → Debounce → Route → AI + Tools → State → Deliver

LLM Orchestration

OpenAI Responses API with structured outputs, function calling up to 5 rounds per turn, multi-layer prompt architecture, and 4-hour session continuity.

Message Pipeline

Full lifecycle from Twilio webhook through debouncing, intelligent routing, AI processing, to WhatsApp delivery with deduplication and rate limiting.

Multi-Tenant Design

Core/client module separation with contract-based extensibility. New clients implement prompt builders, tool executors, schemas, and intent handlers.

Security Layer

AES field-level encryption, HMAC-SHA256 searchable hashing, Twilio webhook signature validation, sensitive data masking, and role-based access control.

State & Concurrency

Persistent conversation state with JSON deep-merge patching, optimistic locking, conversation-level locks, and human takeover with context preservation.

Media Processing

Audio transcription via Whisper, image description via GPT-4, document parsing for PDF/DOCX/XLSX/PPTX, and location data structuring.

Java 25 Spring Boot 3 PostgreSQL OpenAI API Twilio HubSpot Docker Thymeleaf

WhatsApp Automation

Automation Suite

Automated lead qualification and scheduling with conversational flows connected to CRM and internal systems, reducing response times and repetitive tasks.

Node Webhooks CRM Automation

Data Productization

Operational Intelligence Dashboards

SQL-powered business dashboards with actionable indicators, enabling decisions with clearer operational visibility.

SQL Metabase PostgreSQL Analytics

Skills

Technical stack

Backend & APIs

Java, Spring Boot, REST APIs
Authentication, validation, secure integrations
PostgreSQL and relational data modeling
Concurrency control and state management

AI & Automation

LLM integration and prompt engineering
Conversational flows and agent orchestration
Function calling and structured outputs
Media processing (Whisper, GPT-4 Vision)

Ops & Infrastructure

Docker deployment and VPS operations
CI/CD and service monitoring
Linux server administration
Spring profiles and environment management

Collaboration

Requirements analysis and stakeholder communication
Agile planning and prioritization
Documentation and technical storytelling

Education

Academic background

B.Sc. in Software Engineering

Anhanguera

2024 — 2028

Associate Degree in IT Management

Anhanguera

2024 — 2026

Contact

Let's work together

If you are looking for AI automation, backend architecture, or technical product support, send a message and let's start.

Email lucas.vianam@outlook.com

LinkedIn linkedin.com/in/lucasvmaia

GitHub github.com/lucasvm1

Send an email