Juan Esteban Calderón Email & Phone Number

Colombia

Colombia

Colombia

Currently, I work as a backend software engineer at Darwin Evolution, where I am responsible for developing and optimizing systems using Node.js with TypeScript, using frameworks such as Express and NestJS. My main focus is the implementation of microservices architectures, ensuring that systems are scalable, modular and maintainable.Within the international team, which includes collaborators from the United States, Colombia, Chile, Uruguay, among other countries, I work under agile… Show more Currently, I work as a backend software engineer at Darwin Evolution, where I am responsible for developing and optimizing systems using Node.js with TypeScript, using frameworks such as Express and NestJS. My main focus is the implementation of microservices architectures, ensuring that systems are scalable, modular and maintainable.Within the international team, which includes collaborators from the United States, Colombia, Chile, Uruguay, among other countries, I work under agile methodologies such as Scrum, participating in daily meetings (dailys) and contributing to the continuous development through CI/CD pipelines. I also apply good development practices, such as hexagonal architecture, to ensure proper separation of responsibilities and code quality throughout the project lifecycle.Functions and achievements:🚀 Development of scalable backend systems using Node.js, TypeScript, Express and NestJS within a microservices architecture 📦🛠 Implementation of hexagonal architecture and good development practices to improve modularity and maintainability of systems.🌍 Collaboration in an international team, working with members from different countries to deliver high quality solutions.🔄 Integration of CI/CD pipelines to ensure fast and efficient delivery, improving deployment and automation processes. Show less

Colombia

As a Backend Engineer at Unglo, I specialized in NestJS development, implementing GraphQL schemas and a microservices-based architecture. My work covered both the creation of new projects soon to be released, as well as the maintenance, correction and refactoring of existing projects to improve their efficiency and functionality.Functions and achievements:🚀 Backend development specialized in NestJS, integrating GraphQL schemas and adopting a microservices architecture to ensure… Show more As a Backend Engineer at Unglo, I specialized in NestJS development, implementing GraphQL schemas and a microservices-based architecture. My work covered both the creation of new projects soon to be released, as well as the maintenance, correction and refactoring of existing projects to improve their efficiency and functionality.Functions and achievements:🚀 Backend development specialized in NestJS, integrating GraphQL schemas and adopting a microservices architecture to ensure scalable and modular solutions.🔄 Maintenance, correction and refactoring of existing projects, optimizing their performance and guaranteeing their correct operation in the long term.📦 Development and use of custom libraries in npm, yarn and bun to optimize and customize the functionality of projects, improving their adaptability and efficiency. Show less

Colombia

After being promoted to Lead Backend Engineer, I assumed the responsibility of leading a backend development team, continuing with the implementation and scalability of critical systems in Colombia and Peru, using NestJS as core technology. I ensured that the systems developed were highly efficient, modular and secure, applying software architecture principles and best development practices.Functions and achievements:🚀I led the successful migration of several systems from a… Show more After being promoted to Lead Backend Engineer, I assumed the responsibility of leading a backend development team, continuing with the implementation and scalability of critical systems in Colombia and Peru, using NestJS as core technology. I ensured that the systems developed were highly efficient, modular and secure, applying software architecture principles and best development practices.Functions and achievements:🚀I led the successful migration of several systems from a monolithic architecture based on Node + Express to microservices using NestJS, integrating technologies such as Fastify to optimize performance in certain cases.🔧 I implemented significant improvements in the transactionality and modularity of the systems, ensuring high performance and long-term maintainability.🌎 I led the backend development team remotely, managing collaborators in Colombia, Chile and Peru to deliver high quality solutions in a coordinated manner. Show less

Colombia

During my role as Fullstack Developer, I led the development of several systems in Colombia and Peru using NestJS, the NodeJS framework. I focused on the creation of specific modules for each system, improving key aspects such as security, modularity, transactionality and the use of good development practices to ensure scalable, maintainable and high performance solutions.Functions and achievements:🔄 I performed a successful migration from a legacy system based on Node +… Show more During my role as Fullstack Developer, I led the development of several systems in Colombia and Peru using NestJS, the NodeJS framework. I focused on the creation of specific modules for each system, improving key aspects such as security, modularity, transactionality and the use of good development practices to ensure scalable, maintainable and high performance solutions.Functions and achievements:🔄 I performed a successful migration from a legacy system based on Node + Express to a revamped version with multiple APIs using NestJS (some microservices with Express and others with Fastify).🌍 I collaborated remotely and efficiently from Colombia, Chile and Peru, achieving an effective coordination with distributed teams.📈 I contributed to the strengthening of the technological infrastructure of an important service provider in Latin America, optimizing the performance of their systems. Show less

Colombia

In this role, I developed software for existing projects, creating new modules and managing databases, ensuring the correct functionality of the Backend logic using TypeScript with NestJS, the NodeJS framework. In addition, I collaborated in supporting the Frontend with VueJS, achieving a smooth integration between both components. During this experience, I also expanded my knowledge in Backend development with Java, participating in the creation of additional services.Functions and… Show more In this role, I developed software for existing projects, creating new modules and managing databases, ensuring the correct functionality of the Backend logic using TypeScript with NestJS, the NodeJS framework. In addition, I collaborated in supporting the Frontend with VueJS, achieving a smooth integration between both components. During this experience, I also expanded my knowledge in Backend development with Java, participating in the creation of additional services.Functions and achievements:🚀 I designed and managed relational and non-relational databases, working with technologies such as PostgreSQL, MySQL and MongoDB, optimizing the performance and scalability of the systems.🔧 I implemented improvements in the server logic and structure of the Backend modules, ensuring an efficient workflow and effective integration with the Frontend.💡 I gained experience in the development of Backend services using Java, contributing to the expansion of the team's capabilities. Show less

Proyecto Fénix - Semillero De Investigación, Computer Software Engineering, Participación En Semillero De Investigación Enfocado Al Desarrollo De Software.

Activities and Societies: 1. Desarrollar Software en equipo. 2. Ayudar a la gestión y organización del semillero de Ingeniería de Sistemas.

Ingeniería, Systems Engineering

Estudiante, Informatics