Full-Stack Developer & Systems Architect

Systems Architecture, AI Automations & Custom Software

Turning complex ideas into robust, scalable digital solutions. From distributed backends to high-performance frontends.

About Me

I'm Davi Nascimento, a full-stack developer with 5+ years of experience building high-complexity systems. I founded CSO Solutions in 2022 and currently serve as the sole developer responsible for the entire digital ecosystem at Croi Computadores, where I build B2B/B2C platforms with multi-agent AI integrated into WhatsApp.

My expertise lies in microservices architecture, AI automations (Claude API, Gemini), queue systems with Bull+Redis, blockchain solutions, and LGPD-compliant clinical platforms. Every project is treated as unique, with a focus on scalability, performance, and security.

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Years of Experience
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Projects Delivered
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Dedication
Davi Nascimento - Full-Stack Developer

What I Offer

Complete solutions to transform your digital business

Systems Architecture

Microservices design, RESTful & GraphQL APIs, distributed and scalable systems for large data volumes.

AI Automations

LLM integration, intelligent pipelines, advanced chatbots and business process automation with AI.

Full-Stack Development

Complete web applications with Next.js, React, Node.js and relational/non-relational databases.

Blockchain Solutions

Smart contracts, DEX, PIX integration and decentralized payment systems with Solidity and ethers.js.

DevOps & Cloud Infra

AWS deployment, Docker, Kubernetes, CI/CD pipelines and production system monitoring.

Technical Consulting

Architecture review, code review, technical mentoring and strategic planning for development teams.

Featured Projects

Real solutions delivered with technical excellence

Panda da Sorte

2021 – 2022Full-Stack Developer

Large-scale online betting platform with real-time payment system, odds management and support for high concurrent traffic.

Next.jsNode.jsMongoDBRedisKubernetesAWS

Sincronizze

2023 – 2024Tech Lead

Complete ERP for business management with financial modules, HR, inventory and advanced reporting. Led a team of 2 developers.

GraphQLTypeScriptAWSCI/CDPostgreSQL

PixChain

2024Architect & Developer

Decentralized exchange (DEX) integrated with Brazilian PIX payment system, enabling conversion between cryptocurrencies and digital BRL.

Solidityethers.jsInfuraAWS EC2PIX API

Clinical Platform – Dr. Diana

2024Freelancer Full-Stack

Complete clinical management platform for a nutrition clinic with smart scheduling, patient management, specialized exam module (Bioimpedance, Calorimetry, Biologix, Dynamometry, Microbiome), AI-powered WhatsApp support, operational dashboard, and LGPD compliance.

Node.jsExpressNext.js 15MongoDBSocket.IOBull + RedisClaude APIEvolution APIFirebase FCMGoogle CloudLGPD

Croi Computadores

Ativo
2025 – PresentFull-Stack Developer (CLT)

Complete digital ecosystem for a B2B/B2C IT distributor with multi-agent AI integrated into WhatsApp (Claude API + Gemini with image and audio analysis), reseller & affiliate system, ERP integration (IdealSoft), POS, delivery management, and real-time financial dashboard.

Node.jsNext.js 15TypeScriptMongoDBClaude APIGeminiSocket.IOAWSFirebase FCMAgenda.jsRBAC

Tech Stack

Tools I master to deliver excellence

Backend

Node.jsExpressPythonTypeScriptGraphQLREST APIsPostgreSQLMongoDBRedisBullSocket.IOSwagger/OpenAPI

Frontend

Next.jsReactTailwind CSSFramer MotionTypeScriptRechartsVite

Infra & DevOps

AWS (S3, EC2, Secrets Manager)Google Cloud StorageDockerKubernetesCI/CDNginxLinuxGitHub ActionsFirebase FCM

Artificial Intelligence

Claude APIGeminiOpenAI APILangChainRAGAnálise de Imagem/Áudion8nOllama

Integrations & Tools

Evolution API (WhatsApp)Resend APIRBACLGPD / WebhooksAgenda.jsIdealSoft ERP

Blockchain

Solidityethers.jsHardhatInfuraEVMSmart Contracts

How I Work

A structured process from diagnosis to result

01

Diagnosis

Deep understanding of the business, technical requirements and definition of clear, measurable goals.

02

Architecture

Solution design focused on scalability, security and long-term maintainability.

03

Development

Agile implementation with incremental deliveries, rigorous code review and continuous documentation.

04

Deployment

Production delivery with zero downtime, automated testing and safe rollback strategy.

05

Monitoring

Continuous monitoring, proactive alerts and optimizations based on real usage metrics.

Let's Talk

Ready to turn your idea into reality?