Full-Stack Developer Turning Ideas into Code
Backend-focused developer skilled in Node.js, TypeScript, and cloud-native technologies, also experienced with React, React Native, PostgreSQL, and MongoDB. Dedicated to creating scalable and high-performance applications.
Gustavo Chimel
Full-Stack Developer with strong focus on backend development, specializing in scalable and high-performance API architecture using Node.js, TypeScript, NestJS, and Fastify. Skilled in applying software architecture principles such as SOLID, DDD, and design patterns like Factory and Repository.
Proficient in relational and non-relational databases including PostgreSQL and MongoDB, ensuring data consistency, security, and performance. On the frontend, experienced with React and React Native to deliver cohesive and modern user experiences.
Committed to best practices in software development, including unit, integration, and end-to-end testing, with a focus on quality assurance and system robustness. Agile-driven, results-oriented, and dedicated to solving complex technical challenges efficiently.
Fluent in English and currently completing a degree in Systems Analysis and Development. Continuously enhancing technical and soft skills to contribute to innovative backend-focused projects with global impact.
My Skills and Professional Experience
With a solid foundation in Full-Stack development, experience in impactful projects and a robust academic background, I continue to evolve to meet the needs of each new technical challenge.Skills
Java Script
Essential language for web development, creating interactivity and dynamic functionalities in front-end and back-end.
Type Script
JavaScript superset that adds static typing, ensuring greater security and scalability in the code.
Node.js
Server-side JavaScript runtime ideal for fast, scalable APIs.
React.js
JavaScript library for building dynamic and efficient user interfaces, with a focus on reusable components.
Docker
Tool for creating and managing containers, ensuring isolated and consistent environments in development and production.
MongoDB
Document-oriented NoSQL database, ideal for scalable and flexible applications.
PostgreSQL
Robust, open-source relational database known for data integrity and high transaction performance.
MySQL
Widely used relational database management system, ideal for high availability and performance applications.
Experience
December 2023 ~ Ongoing
Full-Stack Developer
Arrobba Sistemas - Brazil
- Modernized internal management by developing a web system for client and product licensing control. The solution enabled the finance department to access data directly from mobile devices, eliminating reliance on technical support. This significantly reduced response time and increased team autonomy.
- Designed and implemented a mobile app for clients to access their information at any time. Within the first week, five clients praised the functionality, and the app directly contributed to acquiring new clients.
- Developed a complete restaurant management system, covering everything from cash control and sales to customer registration and invoice management (incoming, outgoing, and returns). The system is in the final stage and has already generated commercial interest from at least two local restaurants.
January 2025
Freelancer Developer
AI-powered Sales Recovery
- Developed an automated system to recover pending sales by identifying orders with a “waiting for payment” status and sending proactive messages to buyers via the Meta API.
- Integrated AI using OpenAI to automate support with a custom prompt that answered frequently asked questions, reducing the need for human intervention.
- Results: Recovered approximately 40% of abandoned sales and reduced support demand by 63%, according to client metrics.
- Business impact: Improved conversion rates, enhanced customer experience, and optimized the support team’s time.
Academic Background
December 2024 ~ Ongoing
JStack
Learning Platform
React, Node.js, React-native, Fastify, Docker, PostgreSQL, AWS, TailwindCss, Express, TypeScript, MongoDb, DynamoDb, SQL, React-hook-form, React-query, Prisma, Nest.Js, Next.Js, Infrastructure, Development methodologies.
2022 ~ 2024
UniCesumar
Associate Degree in Systems Analysis and Development
Software Development · Systems Analysis · Database Management (PostgreSQL, MongoDB) · Software Architecture (SOLID, DDD, Design Patterns) · Backend and API Development (Node.js, Fastify, NestJS) · Web Development (React, React Native) · Cloud Computing (AWS, Docker) · Agile Methodologies (Scrum, Kanban) · Testing and Quality Assurance (Unit, Integration, E2E) · Problem-Solving · Team Collaboration · Critical Thinking.
2023 ~ 2024
Rocketseat
Learning Platform
React.js Fundamentals · SPA Development with React.js · API Consumption and Performance Optimization · Next.js Fundamentals · Full-Stack Application Development with Next.js · Design Systems · Storybook · TypeScript · SQL · CSS · Tailwind CSS.
Skills
Java Script
Essential language for web development, creating interactivity and dynamic functionalities in front-end and back-end.
Type Script
JavaScript superset that adds static typing, ensuring greater security and scalability in the code.
Node.js
Server-side JavaScript runtime ideal for fast, scalable APIs.
React.js
JavaScript library for building dynamic and efficient user interfaces, with a focus on reusable components.
Docker
Tool for creating and managing containers, ensuring isolated and consistent environments in development and production.
MongoDB
Document-oriented NoSQL database, ideal for scalable and flexible applications.
PostgreSQL
Robust, open-source relational database known for data integrity and high transaction performance.
MySQL
Widely used relational database management system, ideal for high availability and performance applications.
Experience
December 2023 ~ Ongoing
Full-Stack Developer
Arrobba Sistemas - Brazil
- Modernized internal management by developing a web system for client and product licensing control. The solution enabled the finance department to access data directly from mobile devices, eliminating reliance on technical support. This significantly reduced response time and increased team autonomy.
- Designed and implemented a mobile app for clients to access their information at any time. Within the first week, five clients praised the functionality, and the app directly contributed to acquiring new clients.
- Developed a complete restaurant management system, covering everything from cash control and sales to customer registration and invoice management (incoming, outgoing, and returns). The system is in the final stage and has already generated commercial interest from at least two local restaurants.
January 2025
Freelancer Developer
AI-powered Sales Recovery
- Developed an automated system to recover pending sales by identifying orders with a “waiting for payment” status and sending proactive messages to buyers via the Meta API.
- Integrated AI using OpenAI to automate support with a custom prompt that answered frequently asked questions, reducing the need for human intervention.
- Results: Recovered approximately 40% of abandoned sales and reduced support demand by 63%, according to client metrics.
- Business impact: Improved conversion rates, enhanced customer experience, and optimized the support team’s time.
Academic Background
December 2024 ~ Ongoing
JStack
Learning Platform
React, Node.js, React-native, Fastify, Docker, PostgreSQL, AWS, TailwindCss, Express, TypeScript, MongoDb, DynamoDb, SQL, React-hook-form, React-query, Prisma, Nest.Js, Next.Js, Infrastructure, Development methodologies.
2022 ~ 2024
UniCesumar
Associate Degree in Systems Analysis and Development
Software Development · Systems Analysis · Database Management (PostgreSQL, MongoDB) · Software Architecture (SOLID, DDD, Design Patterns) · Backend and API Development (Node.js, Fastify, NestJS) · Web Development (React, React Native) · Cloud Computing (AWS, Docker) · Agile Methodologies (Scrum, Kanban) · Testing and Quality Assurance (Unit, Integration, E2E) · Problem-Solving · Team Collaboration · Critical Thinking.
2023 ~ 2024
Rocketseat
Learning Platform
React.js Fundamentals · SPA Development with React.js · API Consumption and Performance Optimization · Next.js Fundamentals · Full-Stack Application Development with Next.js · Design Systems · Storybook · TypeScript · SQL · CSS · Tailwind CSS.
My projects
Explore the projects I’ve worked on, each with unique challenges and creative solutions. Each work reflects my passion for technology and my commitment to quality.
Backend
BeauSys – API
Get in touch to talk
Get in touch
© Copyright 2025 Gustavo Chimel. All rights reserved.