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Full Stack Developer with strong backend specialization and proven experience designing, building, and scaling complex, production-grade systems. I have led the architectural definition and backend development of a multi-tenant ERP platform, applying Domain-Driven Design (DDD), Clean Code, and performance-oriented engineering practices from day one. I stand out for combining deep technical execution with end-to-end ownership: from system architecture and tenant provisioning to authentication, infrastructure cost optimization, and direct client interaction. I have delivered solutions that reduced operational processes from hours to minutes, cut hosting costs by up to 80%, and improved query performance by 30% through careful optimization and low-level database control. My experience spans Node.js, TypeScript, Fastify, Prisma, AWS (Cognito, S3, Lambda, Step Functions), Vue.js, GraphQL, MongoDB, Firebase, and real-time, event-driven systems. I am comfortable acting as a technical reference, translating business requirements into scalable architectures, and maintaining systems in production environments with high reliability and performance demands.…Full Stack Developer with strong backend specialization and proven experience designing, building, and scaling complex, production-grade systems. I have led the architectural definition and backend development of a multi-tenant ERP platform, applying Domain-Driven Design (DDD), Clean Code, and performance-oriented engineering practices from day one. I stand out for combining deep technical execution with end-to-end ownership: from system architecture and tenant provisioning to authentication, infrastructure cost optimization, and direct client interaction. I have delivered solutions that reduced operational processes from hours to minutes, cut hosting costs by up to 80%, and improved query performance by 30% through careful optimization and low-level database control. My experience spans Node.js, TypeScript, Fastify, Prisma, AWS (Cognito, S3, Lambda, Step Functions), Vue.js, GraphQL, MongoDB, Firebase, and real-time, event-driven systems. I am comfortable acting as a technical reference, translating business requirements into scalable architectures, and maintaining systems in production environments with high reliability and performance demands.

Luiz Henrique Sant’Ana de Freitas

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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Full Stack Developer with strong backend specialization and proven experience designing, building, and scaling complex, production-grade systems. I have led the architectural definition and backend development of a multi-tenant ERP platform, applying Domain-Driven Design (DDD), Clean Code, and performance-oriented engineering practices from day one. I stand out for combining deep technical execution with end-to-end ownership: from system architecture and tenant provisioning to authentication, infrastructure cost optimization, and direct client interaction. I have delivered solutions that reduced operational processes from hours to minutes, cut hosting costs by up to 80%, and improved query performance by 30% through careful optimization and low-level database control. My experience spans Node.js, TypeScript, Fastify, Prisma, AWS (Cognito, S3, Lambda, Step Functions), Vue.js, GraphQL, MongoDB, Firebase, and real-time, event-driven systems. I am comfortable acting as a technical reference, translating business requirements into scalable architectures, and maintaining systems in production environments with high reliability and performance demands.…Full Stack Developer with strong backend specialization and proven experience designing, building, and scaling complex, production-grade systems. I have led the architectural definition and backend development of a multi-tenant ERP platform, applying Domain-Driven Design (DDD), Clean Code, and performance-oriented engineering practices from day one. I stand out for combining deep technical execution with end-to-end ownership: from system architecture and tenant provisioning to authentication, infrastructure cost optimization, and direct client interaction. I have delivered solutions that reduced operational processes from hours to minutes, cut hosting costs by up to 80%, and improved query performance by 30% through careful optimization and low-level database control. My experience spans Node.js, TypeScript, Fastify, Prisma, AWS (Cognito, S3, Lambda, Step Functions), Vue.js, GraphQL, MongoDB, Firebase, and real-time, event-driven systems. I am comfortable acting as a technical reference, translating business requirements into scalable architectures, and maintaining systems in production environments with high reliability and performance demands.

Available to hire

Full Stack Developer with strong backend specialization and proven experience designing, building, and scaling complex, production-grade systems. I have led the architectural definition and backend development of a multi-tenant ERP platform, applying Domain-Driven Design (DDD), Clean Code, and performance-oriented engineering practices from day one.

I stand out for combining deep technical execution with end-to-end ownership: from system architecture and tenant provisioning to authentication, infrastructure cost optimization, and direct client interaction. I have delivered solutions that reduced operational processes from hours to minutes, cut hosting costs by up to 80%, and improved query performance by 30% through careful optimization and low-level database control.

My experience spans Node.js, TypeScript, Fastify, Prisma, AWS (Cognito, S3, Lambda, Step Functions), Vue.js, GraphQL, MongoDB, Firebase, and real-time, event-driven systems. I am comfortable acting as a technical reference, translating business requirements into scalable architectures, and maintaining systems in production environments with high reliability and performance demands.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Portuguese

Fluent

English

Fluent

Work Experience

Full Stack Developer at meu CPD – Soluções Tecnológicas

August 1, 2025 - Present

Led backend development for a multi-tenant ERP using Node.js, Fastify, Prisma ORM, and Zod; defined architecture with Clean Code and DDD; implemented tenant provisioning and data isolation; optimized text-based queries with Prisma raw queries, reducing execution time by up to 30%; implemented authentication with AWS Cognito and file storage with AWS S3; integrated SEFAZ NF-e issuance; built a web platform for automated PDF analysis and generation of responsive spreadsheets, cutting manual processing from hours to minutes; served as technical contact for requirements, business rules, deployment, and maintenance; created a message automation system via TypeScript, Firebase Firestore, and LRU cache; built frontend for messages, customers, and queues with Vue.js, Pinia, and Nuxt; supported WhatsApp-integrated customer service and messaging system using Vue.js, TypeScript, Firebase, and Docker; contributed to hosting migration reducing costs by ~80%.

Full Screen Developer at Yeb Market Intelligence

November 1, 2023 - April 1, 2025

Built a B2B system for contract management, market analysis, and sales; implemented Dependency Injection, Clean Code, and Decorator patterns; developed backend APIs/services with Node.js, GraphQL, and MongoDB; frontend interfaces with Vue.js; created an internal tool to analyze .xlsx files and automate entity insertion; migrated external email delivery to an internal solution to reduce costs; optimized queries and asynchronous processes with worker threads and batching; designed approval and contract signing workflows using AWS Lambda and Step Functions; worked in Scrum/Jira for bug fixes, refactoring, and technical support.